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bob bees resume Totally RAD Crops. Converted directly out of Fallout 4, we bring you two types of homeworl crops that can be used by your wastelander sims to survive unto another day. Each comes in Seasonal and Non-Seasonal varieties for you to writing, choose from. The Tato Crop and Seasonal Tato Crop functions identically to any garden crop from the To Boldy Grow - Garden Crops Set. The Mutfruit Tree functions identically to trees from the Citrus Trees Set , while the Seasonal Mutfruit Tree functions identically to the trees from the An Apple A Day Set. Tatos will start in a seedling state regardless of being Seasonal or Non-Seasonal. Mutfruit Trees will start in a fully formed but dormant small tree.
They will then grow into homeworl, full harvest states to essay on what hockey, their respective timing code. Tatos have an additional state, showing flowers where the fruit should be after harvesting. This indicates the plant is mature, just waiting for its next harvest to homeworl, be ready. When harvesting a Tato your sim can choose between a Seedling Plant, or batch of Tatos. Leadership Essay Mckinsey! Mutfruits will drop pieces of individual fruits while active or in summer, and a sim can harvest a bucket of homeworl them when they are ready. *These two crops come with a new harvest accessory; a rusty old bucket. This must be used with the essay mckinsey Fallout Crops. *The Seasonal Mutfruit tree does not change the color of its leaves in homeworl, each season, but will lose its leaves in essay, Winter. Everything can be found in homeworl, Build Gardening for paper $5. All files compressorized.
Apothecary Todd’s Cart is comprised of several separate components: Cart, Side Door, Shutters Steps, Bookshelf. The Cart is the main object. It includes 18 slots, the first 3 are for snapping the Side Door, Shutters Steps and Bookshelf into, while the remaining 15 are slots for the interior shelves for homeworl selling items. Writing A Medical Research! The Side Door and the Shutters Steps feature the homeworl ability to “open” and “close” on a day/night timer. However, you can also manually have your Sim via Pie Menu open and close them as desired. Mckinsey! The bookshelf will not interfere with sims purchasing items from the homeworl cart shelves, and has bottom only book grabbing animations. The Cart is also functional for Sims to go inside if you first place a floating floor of discuss in essay writing 2 x 5 tiles + stairs with invisible recolor. The Cart will automatically sit on top of the floating floor and you can direct your Sim to use the interior. It’s big enough to fit a twin bed inside or other items for “camping” that your Sims might need for homeworl a life on the road. Another feature is once you have filled all the writing a medical paper slots on the cart with it’s additional pieces and items for sale, your Sim can “Grab Cart” to place into their personal inventory and homeworl take it with them to another lot, just like a traveling salesman!
Everything will remain in the slots to be taken out and finance thesis, later and used. Also included are 42 recolors of the cart. 22 in planked woods, and homeworl the same 22 in smooth woods. All can be mixed and matched to achieve well over the 22 base looks.Feel free to thesis, recolor it even more, as the two subsets it uses consists of the Body/Floor and the Trim/Roof. Wheels/Metal/Glass are un-recolorable.
The bookshelf has 16 recolors that come from being slaved to cart trim, and the Shutters/Side Door also come in the same 16 colors. All items may be found in the Buy catalog under Hobbies - Miscellaneous. All items are visible in Hood view. All items compressorized. Rustic Poultry Coops - Expansion Set. By request, this mini set introduces some new historic and rustic styles of coops for Chickens, Ducks and Geese. These coops offer all of the features of the homeworl large modern coop including the ability to on what hockey, reproduce. With their simple designs you should be able to homeworl, integrate these coops into a variety of periods and settings.
You can pick and choose which coops you want in your game, HOWEVER: * All coops can be found in the Buy catalog under Hobbies - Miscellaneous. * All coops are visible in marketing, Hood View. View More / Download At The Keep. Basket Weaver Completer Set v4.1. Homeworl! We’ve had a few requests for essay on what is ailing our national some of homeworl these, so here’s a mini update of add-ons for the Basket Weaver Station which includes 14 new items. Apiary Station: Basket Skep. Discuss In Essay! Japanese Basket Small. Skill Level 2 or higher. Japanese Basket Medium. Skill Level 3 or higher. Apiary Station: Closed Basket Skep.
Japanese Basket Large. Skill Level 4 or higher. Apiary Station: Bruegel’s Basket Skep. Homeworl! BirdcageRequires 6 Bundles of essay on what is ailing hockey Reeds. Skill Level 5 or higher. Chicken Coop Crafting Station. Small Square Pet Bed. Skill Level 7 or higher. Homeworl! Writ of Mastery.
Apiary Station: Gwenke’s Bee Box. Skill Level 7 or higher. Writ of proposal Mastery. * Wicker Hat may be displayed in a laying or hanging position via Pie Menu. Includes 18 pooklet natural textures. Also has the option to raise/lower item without the need for homeworl omsp. The Bee’s Knees Apiary Set. *Please note, there is discuss in essay writing additional information posted at the Keep. Homeworl! Purchase a skep or bee box from the Build catalog under Garden - Gardening.
Once you place it you can stock it with a collected Wild Beehive or harvested Queen Cell from another apiary station. There is a total of 10 skeps and bee hives (medieval, modern, and everything in bowdoin essay, between) to choose from. During spring, summer and autumn seasons, Honeycomb may be harvested regularly. Honeycomb may be used to stock the refrigerator, sold for profit or used to create processed honey and beeswax (for future candlemaking). In the homeworl summer, Queen Cells may be harvested. These may be used to establish new colonies or sold for profit. Note that harvesting is based on a 50% coin flip each day, so availability of Honeycomb or Queen Cells is random. The amount of Queen Cells retrieved is also random. You can expect between 3 to 6 quantity per harvest. Phd Research! Be sure to check your station each day for harvest availability.
You should see bees around your “live” skep or bee box during the day and none at night. During the winter the colony will become dormant and homeworl you won’t see bees at all until the spring. In the Winter, the essay hive is threatened by homeworl, starvation when there is excessive cold or deep snow on the lot. In this situation you can feed the bees their honey to give them a chance at survival. Take a harvested Honeycomb to research paper, the bee box and select Treat Starvation.
There is a random chance of success or failure. If successful the hive will resume in the spring as normal and if it is homeworl a failure the hive will need to be stocked again in banking, the spring. Various Mechanical skill levels are required to perform certain tasks at the Apiary Station: If a Sim carries a Smoker in their personal inventory they will autonomously harvest Honeycomb. If they meet the requirements, they will also autonomously harvest Queen Cells. The attraction is the same as on other crops, so if a Sim is in close proximity they should be more prone to harvest, but ultimately depends on homeworl, their personality and distractions. The Smoker can be found in the Buy catalog under Hobbies - Miscellaneous. Once a Sim has collected 6 Honeycombs it’s time to use the press to filter out the honey.
Sims with a Mechanical skill level of 4 or higher will default produce Clover Honey as this tends to be the bowdoin essay supplement most common type. Upon completion of homeworl using the press, 6 jars of essay on what is ailing game hockey Honey and 1 bucket of Raw Beeswax will be placed into the Sim’s personal inventory (or business owners). Jars of homeworl Honey may be be used to stock the refrigerator or sold for is ailing our national game profit, while the Raw Beeswax can be used as a resource in other stations (candlemaking) or sold for profit.The Press includes 18 pooklet naturals recolors + painted options. It can be found in the Buy catalog under - Hobbies - Miscellaneous. If a Sim has a Writ of Mastery in Beekeeping in homeworl, their personal inventory and there are specific botanicals on a medical research, the lot, the option to make different types of honey appears on the Press.
Heyo, just a quick question, This goes back to your Herbs, Spice, and Everything Nice post (i dont know how long ago that was posted) but I am using it. I created a community lot called The Forest in my #039;hood, and homeworl placed a BUNCH of the spices and banking and finance herbs. My sims have only visited the lot twice, a few seasons apart, but the herbs and spices only homeworl, have the action compost X on it, with x being the spice, what do i do to make it so they can harvest them? You shouldn’t have to do anything to make them harvestable save wait the required amount of time to for them to “pop” to harvestable state. Since it’s on a community lot I can guess this is because no one playable sim has stayed on the lot long enough for them to pop. Here’s a recommendation. A; Turn lot into residential, wait for thesis herbs to be ready to harvest, exit and save, return lot to community. All changing via cheats.
B: Have a sim camp out on a community log until the herbs are ready, exit the lot without harvesting. Either of these will mean that they will forever be ready to harvest when you visit the community lot in the future. Busy Bees: Wild Hives. Forager Sims can collect honey and hives from homeworl, wild bees for writing freeat their own risk! There are two types of hives: Skyrim or more realistic “honeycomb” style covered in bees texture. Homeworl! You must choose which type you prefer for banking and finance your game as you cannot have both. An Old Tree Log, Old Tree Stump, or Hanging Hive are ideal locations for homeworl wild bees to dwell. You can find these in the Build Catalog under Garden - Gardening for free. Place these in your forests and discuss in essay writing yards to “attract” bees.
The Hanging Hive can be placed anywhere with cheats. Homeworl! It features the raise/lower bhav to in essay writing, put it into bushes, trees or other opportunistic locations without the need for omsp. An hour after the Old Tree Log or Old Tree Stump are placed a beehive will appear along with bees fx. This happens only 5 Sim minutes after placing the Hanging Hive. Teen through elder Sims can collect the entire Beehive or a Jar of Raw Honey. The Beehive will be needed to stock the homeworl Apiary Station Skeps, while the Jar of Raw Honey may be used to stock the fridge as food. Both may be sold for profit too. Once the thesis Sim has made their initial collection the homeworl hive is “destroyed”, meaning it disappears for writing a medical paper 48 hours. In a few days a new colony of bees has established their home and Sims can harvest once again.
This happens from Spring through Fall, while the hives are dormant in winter. Placing an Empty Basket into the Sims personal inventory means they will autonomously collect beehives, while placing an homeworl, Empty Jar into personal inventory means they will autonomously collect raw honey. Placing both basket and jar into inventory means your Sim will autonomously select to collect either item randomly each time. Skill levels still apply, so it’s up to you to decide if you only want to assign autonomous collection to qualified Sims that will always be successful or encourage your lower skilled Sims in order to build their expertise. You can “gift” these tools to visitors and employees to encourage them to do work for you. Visitors to the lot that are considered “mean” (300 nice points or less) and in a bad mood may attempt to steal a hive or honey. Hopefully they have the necessary skills or they may get retribution from game hockey, feral bees.
Low skilled visitors typically only make a couple of attempts before their motives drop low enough that they must leave or seek other entertainment.
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oxfordian essay Doubts About Shakespeare's Authorship. #9472; Or About Oxfordian Scholarship? 1728 - Publication of homeworl, Captain Goulding’s Essay Against Too Much Reading in essay supplement, which he comments on the background Shakespeare would require for his historical plays and suggests that Shakespeare probably had to keep “one of homeworl, those chuckle-pated Historians for his particular Associate … or he might have starvd [sic] upon discuss writing his History.” Goulding tells us that he had this from “one of his (Shakespeare’s) intimate Acquaintance.” — “History of Doubts surrounding the authorship of Shakespeare’s Works,” from the homeworl, Shakespeare-Oxford Society Home Page. After the earliest allusion to Shakespeare, in 1592, it took over 190 years before the first unequivocal doubt about his authorship of the renowned plays is heard (which wasn’t made public until 1932 – by Allardyce Nicoll, a Shakespearean scholar, it so happens). Another sixty years would pass before doubts got into the public realm, when one Joseph C. Hart expressed them in his book “The Romance of Yachting,” in 1848.
From the Shakespearean point of view, the doubts spring from the sea-change in the author’s reputation, from a brilliant, if crude, dramatist, into an omniscient genius, which began with the publication of Samuel Johnson’s edition of essay, his works in 1765, and propelled still higher in 1769 when the homeworl, greatest actor of his age, David Garrick, staged the in essay writing, “Shakespeare Jubilee” in Stratford-upon-Avon. This marked the apotheosis of the author – not one of the homeworl, plays was performed. Essay Mckinsey. Bardolatry was born. Oxfordians assert that generations of critics were led astray by the remarks of Ben Jonson and John Milton, persuading them into believing Shakespeare was “child of nature.” They have searched high and homeworl, low in the years between 1592 and a medical research, 1769, for clues that others perceived the homeworl, truth: the bowdoin essay, son of a craftsman in homeworl, a provincial town, with a grammar school education (if that), cannot possibly have written works in which they perceive the experience and knowledge available only to bowdoin essay supplement someone of good breeding – an aristocrat, a nobleman. The problem was finding someone from an early day who agreed with them. And then – O frabjous day!
On that day, an Oxfordian visited the Houghton Library, the rare book repository at homeworl Harvard University. Perhaps he was the originator, or was he the lucky discoverer, of a note slipped into a small book entitled An Essay Against Too Much Reading , published in 1728. The note reads, #147;the earliest known publication of writing, any questioning Shakespeare#146;s having written the homeworl, works attributed to banking him. See pp. 12 and homeworl, 13.#148; An odd little book, the writing, first part of it consisting of 36 pages, includes an essay, “The Whole Lives and Proceedings Of Sancho and Peepo,” and another about the “So Many Processions” in the town of Bath in the preceding year. Homeworl. The second part, numbered pages one to 27, is titled “An Essay Against Reading, c .” It is and finance thesis here that the Shakespeare revelations are to be found. Hooray, for Captain Goulding! (Except it probably wasn’t him. This attribution is based on homeworl an item on the verso of the last page of the book, “A Speech to Royal Highness, the Princess Amelia on her Birth-day, by Captain Goulding, at phd research marketing his Procession.” There is nothing in homeworl, this speech in common with the author of the essay.
But let’s call him Goulding, for the sake of convenience.) I discovered this remarkable news in a link to the “History of Doubts” on the Shakespeare Oxford Society site on the PBS Frontline web page for the mockumentary The Shakespeare Mystery , which it has twice broadcast. Two things immediately came to mind. First, find the book and see for myself. Second, isn’t there something not quite right, maybe even a little odd, about the information that the Oxfordians present?
I can’t quite put my finger on it … I’ll leave you to marketing ponder this. Homeworl. In the meanwhile, I found the book in the Folger Shakespeare Library and, for your better consideration of the matter, I shall begin with some excerpts that will give you flavor of this authoritative tome to prepare you for what Oxfordians commend as credible, factual, authentic scholarship (perhaps because of discuss, its resemblance to homeworl their own). Then you will get, in in essay writing, full, the excerpts about Shakespeare. Homeworl. (I will most often use modernized spelling and punctuation. Banking Thesis. A vertical line in the text indicates page divisions. Shakespeare’s name is in bold face.) [ Pages 1-3 ] I have spent a little time in homeworl, considering the Reason why all our Poets are so low, and the Wit of our present Age is essay so much inferior to homeworl some Ages past. I can attribute it to nothing but the present indolent Course of Life.
Reading, that unactive Course, is the forerunner of all distempers. The Reader fixes himself in the easiest posture he can, and frequently dozes until he drops asleep, and consequently forgets all he has been doing. Reason, and discuss in essay writing, our Physicians, tell us that inactivity is the forerunner of all distempers; if so, for homeworl, health’s sake, we ought to restrain ourselves as much as possible from it. But this is the most inconsiderable reason I shall give, ‘tis my business to set forth the disadvantages, to the improvement of human Reason in general. | The Reader believes that his memory is essay our national hockey able to retain all he can discover with his eyes; if he could, it would be an homeworl, indifferent exchange, to lose his own thoughts to borrow another’s. Only consider, in essay on what our national hockey, reading one line, there’s a moment lost to yourself by giving it to the Author; you can never read and homeworl, think at the same time, yourself shall be the game hockey, judge: Suppose you had a pen in hand instead of a book, whether your moments might not afford as material thoughts as any Author? No doubt but you shall say, Not; and that God intended the whole creation to serve each other. Admit that, but not in homeworl, sublime thought; there Nature dictates, and none but the lame and bowdoin, the lazy look out for homeworl, assistance, and phd research marketing, of course must always limp behind. Only consider how much time you lose before you touch that which pleases. By constant Reading you discover a great deal bad as well as good, to which your own thoughts might have been superior. Admit it was all good, after eight or ten years perusal, then you are entitled to say, I ought to do something, after seeing every thing. When you sit to write, your head is homeworl so stuffed with so many Authors and fine things, you known not where to begin, nor how to serve yourself, without touching other men’s works: Your spirits are sunk with the difficulty, then away to the Coffee-House, repeating your old histories, which makes you pass for a clever Man; and at the same time ‘tis an imposition, and what any School-Boy might do, that has a memory.
So you drone away your time till death, without serving your Country. Essay Is Ailing Game. After | these tedious customs, a Parrot can as well read, as you to talk without a Book. [ Page 7 ] As to homeworl my Historian, I traveled about three weeks with him, and he was the cleverest fellow I ever met with that way in my life; there#146;s scarce a Book from the mckinsey, beginning of writing to a sixpenny pamphlet, but he will give a handsome account of, and he had studied Physick [ as in physician] likewise; that with his old danby covered Books of a thousand years old, he had stuffed my body like a library, and with gally-pots [gallipot, a small glazed pot used by apothecaries] and Physick stuffed my head like an Apothecary#146;s Shop; and I have not been right well ever since. Homeworl. We went a courting, and when at the teatable, dinner, or supper, there was nothing but History and discuss writing, Physick, Physick and History; he knew nothing of courting, so faith, we came home like Fools as we went, left the girls in a surprise; and what is worse, he almost ruined me, for I could talk of nothing but History and Physick for two months after. [ Page 10 ] I have been acquainted with some persons at the University, and in several Colleges; and homeworl, I have been in the hundreds, at several taverns, such as the Rose, Rummer , Fountain , and Horse-Shoe ; and I have heard there is at the former more lewdness, debauchery, vile swearing, out-o#146;-the-way romancing, and being drunk every night; in phd research, short, more Variety of Wickedness than at the latter. There was nothing wanting but the homeworl, females to make it a true picture of the other; so that one would think the V[ice] Ch[ancel]lor must have had a cloven foot, or there would have been a method taken to prevent such profligate wretches from essay on what is ailing our national game their vile ways.
Some were obliged to homeworl quit the College, for fear he would have appeared in some surprising shape. I have heard 500 say it is the bowdoin supplement, Fountain of Virtue and Knowledge, and have heard a thousand say it is of Vice. As we can see from the meticulous scholarship, the scientific methodology, this is homeworl what we would nowadays call a definitive study of the acquisition of banking thesis, knowledge and of the status of reading, history and universities in early 18 th -century England. Homeworl. We are thus prepared to delve into the insights of leadership essay, this penetrating scholar “on the background Shakespeare would require for homeworl, his historical plays,” and writing, his unquestionable belief, based on first hand knowledge he got secondhand, that Stratford Will did not have any such grounding. Thus, without further ado, with every reference to Shakespeare in context, we offer: Shakespeare in the Essay Against Reading, c . [ Page 3 ] These Books take all young fellows off from thinking; they are lying about in every house; custom has made it so natural, they run to it and homeworl, there pause for some time.
If they had any concise thoughts, which scarce any’s without, they are immediately drowned, and essay mckinsey, of course thrown away. Then consider the Ancients were but mortal as thou art, and why superior to thyself, not any ways inspired? Thy business is to go forward, and not look back for crutches to bring thee creeping behind. Study without Book, then you’ll be supplied with thoughts at the firsthand; don’t lie droning thy time away in homeworl, a Library, gazing and not knowing where to in essay fix; like as if thou wast staring at promiscuous gems, still at a loss, not knowing where to homeworl make choice. Thou may’st call over thy Virgil and Homer, Milton and on what is ailing hockey, Shakespear [sic], all fine Names. So thou may’st the Diamond, the Sapphire, the homeworl, Emerald and Ruby, and still be at a loss, not knowing where there’s most beauty. Essay On What Is Ailing Our National Game. Thou canst not command one hour, and after thou hast almost finished a seven years perusal, Death strikes thee, and homeworl, all’s gone to the World: which if thou hadst writ thy Works, would have survived thy name. [ Pages 12-15 ] Those that have not a capacity, nor never will endeavor to write, they may read Novels, Plays, Poems, History, or whatever their inclinations lead them to; but I would not have Numps [a silly or stupid person] think it would give him a new capacity, or furnish him with any thoughts to make him capable of writing, without a great deal of essay on what is ailing our national hockey, plagiarism, which is soon found out.
But men of very good understanding are frightened after reading so many beautiful things so well done. Shakespear has frightened three parts of the World from attempting to write; and he was no Scholar, no Grammarian, no Historian, and in homeworl, all probability could not write English. Although his Plays were historical, as I have heard, the leadership mckinsey, History part was given him in concise and short, by homeworl one of these Chuckles that could give him nothing else. Then Shake| spear , like the essay, swift hawk that wings his way in homeworl, pursuit of his game, takes his flight, and soars so much higher, that his vast lengths, with such variety, turns, and delightful changes, ravish all Spectators with admiration and amazing wonder. You may then observe their eyes lifted up, crying, Oh! immortal and inimitable Shakespear! whither art thou gone! Now thou hast taken too great a flight ever to return, unless thou hadst taken us with thee. Here we are left in a melancholy World, without a Spark of new Wit to game revive our drooping spirits.
These foolish reports give him such a supernatural character, that it sends everybody to read him; and, in homeworl, short, they find such fine similes, sublime thoughts, and beautiful turns, it frightens a young Fellow from ever presuming to write, if he had it in discuss in essay writing, his thoughts before. And the world is crying, there is nothing can ever come up to him, like blockheads. Why may not another be better than him? There are ten thousand better Scholars, for homeworl, he was none; and I am assured there are an hundred Shakespears in England at this time; but this way of essay, talking frightens them. I don’t tell you they are at homeworl the University; their beautiful thoughts are being driven out by being stuf[fed] with History; besides, their Tutors teach them to think pretty near almost the same way. In Essay Writing. Some Universities, in our days, afford us nothing surprising, but a little Religion, and now and then there comes out homeworl another spick and span-new Way to a medical Heaven. The Lord grant that we may not be put into so many paths, and lose the homeworl, right at last. Yes, sometimes a new Physician is sent | us, and the poor country souls put their lives in their hands, to give them the bowdoin essay supplement, practical part; but I will never take any of their prescriptions ‘till they have been in the hands, and under the Directions of such celebrated and ingenious Men as Dr. Bave; and in homeworl, all probability, Dr.
Harrington must be a very safe Physician, the World allowing him to discuss in essay writing be a Man of homeworl, fine Sense, a regular Liver, and a graduate Physician: besides the vast advantages he has gained in being in so many consultations, and having perpetually his Father’s Directions and Rules of Practice for and finance thesis, his Improvement. I will give you a short Account of Mr. Shakespear’s Proceeding; and that I had from one of his intimate Acquaintance. His being imperfect in some things was owing to his not being a Scholar, which obliged him to have one of those chuckle-pated Historians for his particular Associate, that could scarce speak a word but upon homeworl that subject; and he maintained him or he might have starved upon his History. And Finance Thesis. And when he wanted any thing in his [the historian’s] Way, as his Plays were all Historical, he sent to him, and took down the heads what was for his purpose in Characters, which were thirty times as quick as running to the Books to read for homeworl, it. Then with his natural flowing Wit, he worked it into all shapes and forms, as his beautiful thoughts directed. The other put it into Grammar; and instead of Reading, he stuck close to writing and study without Book.
How do you think Reading could have assisted him in such great thoughts? It would only have lost time. When he found his thoughts grow | on essay supplement him so fast, he could have writ forever, had he lived so long. Mr. Congreve writ his first Play before he was sixteen years of age. Homeworl. Do you think he was a Historian before he was done with his School-Books? No; the Dictates of Nature only refined his judgment, which was surprising in a Youth. But I am afraid he fell into the other way, being over-curious of essay, seeing what Shakespear , and others, had done, which forewarned him of homeworl, great difficulties; or was afraid he should not excel those that gave him the surprise: whereas, otherwise, it would have been almost as easy as writing a common letter. [ Page 16 ] I have a Play almost ready for the Stage.
I keep but just within in the bounds of Religion and Law; to all other Passions I am boundless, and expect to discuss in essay be raved at for Romantick Bombast; but let them mend it, that shall not fright me; and if it’s damned, they may be d[amne]d for their pains, for what I care. I do assure you, I would not read any of Shakespear’s or Congreve’s Plays for fifty pounds, for fear it should puzzle or surprise me with wonder, that might dispirit me from going on. He that writes must think himself the best, or else he writes in fear, and consequently his Works will come to nothing: Courage is half the homeworl, proceeding in leadership essay mckinsey, any undertaking. There You Have It. But wait, you say: what happened to “Captain Goulding’s” “comments on the background Shakespeare would require for his historical plays”? Where are they? It does appear that Oxfordians, who often miss what is there, have been compensated by homeworl a knack for finding what is not there.
One thing that is game not missed, just missing, is what they assert the essay’s author was actually saying about Shakespeare keeping an historian. As Oxfordians’ fashion it in their “History of Doubts,” Goulding “suggests that Shakespeare probably had to keep ‘one of those chuckle-pated Historians for his particular Associate … or he might have starvd upon his History’.” In other words, Shakespeare, “not being a Scholar,” would have starved on homeworl his own knowledge of history. However, as we see, the passage actually says that Shakespeare hired “one of those chuckle-pated Historians for his particular Associate, that could scarce speak a word but upon that subject; and he maintained him , or he might have starved upon his History.” The italicized portion is what the Oxfordians omitted. In context, I believe, the correct interpretation is that it was the “chuckle-pated historian,” not Shakespeare, who would have starved upon his historical knowledge had he not been employed by leadership essay mckinsey the playwright. For historians, according to Goulding, the only other means for sustenance is “to make his fortune by homeworl marriage.” Agreed, that passage in full is ambiguous – it can be read either way.
With the portion in italics omitted, as the Oxfordians did, it leads the reader to essay on what our national think that there is only one way it can be read – the way they want it to homeworl read, the bowdoin essay, way they want you to homeworl believe. Which brings us to that part of the Oxfordians’ news that I found so elusively disquieting. As they put it: Goulding tells us that he got this from “one of his (Shakespeare’s) intimate Acquaintance.” Many a midnight dreary (the weather has been awful lately), I pondered this weak and in essay writing, weary (who isn’t at midnight?), wondering what it could be that doesn’t seem quite right about this. Could it be Oxfordians have once again been up to homeworl some sleight of phd research, mind? Let’s take a look at it again, as it appears in homeworl, the essay in its entirety: “I will give you a short Account of Mr. Shakespear’s Proceeding; and leadership mckinsey, that I had from one of homeworl, his intimate Acquaintance.” Shakespeare died in 1616. Goulding was writing in 1728 #150; 112 years later! That would make Goulding#146;s source something over 130 years old.
Isn#146;t it extraordinary that the Oxfordians, who microscopically scrutinize every word in every allusion to phd research proposal Shakespeare, who find every flyspeck in the Shakespearean ointment, can have detected nothing amiss? Still more remarkable is how anyone can have proffered An Essay Against Too Much Reading as a serious source for information about Shakespeare. As the excerpts I have quoted show, it is from start to finish a satirical polemic, written at a time when perhaps the homeworl, greatest of satirists in the English language, Jonathan Swift, was at the height of bowdoin, his fame. Although it has neither the bite nor polish of Swift’s wit, its author’s style and exaggeration are frequently funny, at homeworl times hilarious. But then, when it comes to the authorship controversy, even the is ailing hockey, most congenial Oxfordians (and I have known many) may lack a sense of humor.
Like many another, I am amazed by homeworl how deeply, inexhaustibly, they delve to come up with obscure things; An Essay Against Too Much Reading is an outstanding example. Unlike the others in that many, I wonder at phd research proposal marketing times if I may be the only who is no less amazed by homeworl what they do with these sources.
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utexas dissertation Daniel Gregory Lessin(1). Evolved Virtual Creatures as Content: Increasing Behavioral and Morphological Complexity. The University of Texas at Austin, Department of Computer Science(1). Report# TR-15-01 (dissertation). January 3rd, 2015.
Throughout history, creature-based content has been a highly valued source of entertainment. With the introduction of evolved virtual creatures (or EVCs) by Karl Sims in homeworl, 1994, a new source of creature content became available. Despite their immediate appeal, however, EVCs still lag far behind their natural counterparts: Neither their morphology nor their behavior is sufficiently complex. Discuss In Essay Writing? This dissertation presents three contributions to address this problem. First, the ESP system, which combines a human-designed syllabus with encapsulation and conflict-resolution mechanisms, is used to approximately double the state of the art in homeworl, behavioral complexity for evolved virtual creatures. Second, an extension to a medical research paper ESP is presented that allows full morphological adaptation to continue beyond the initial skill. It produces both a greater variety of solutions and solutions with higher fitness. Third, a muscle-drive system is homeworl demonstrated to embody a significant degree of physical intelligence.
It increases morphological complexity and reduces demands on the brain, thus freeing resources for more complex behaviors. Together, these contributions bring evolved virtual creatures, in both action and in essay, form, a significant step closer to matching the entertainment value of creatures from the real world. Austin Waters(1). Infinite-Word Topic Models for Digital Media. The University of Texas at Austin, Department of Computer Science(1).
Report# TR-14-12 (dissertation). October 10th, 2014. NO ABSTRACT. Jacob Benoid Schrum(1). Homeworl? Evolving Multimodal Behavior Through Modular Multiobjective Neuroevolution. The University of Texas at Austin, Department of Computer Science(1). Marketing? Report# TR-14-07 (dissertation). May 1st, 2014. 208 pages.
Intelligent organisms do not simply perform one task, but exhibit multiple distinct modes of behavior. For instance, humans can swim, climb, write, solve problems, and play sports. To be fully autonomous and robust, it would be advantageous for artificial agents, both in physical and virtual worlds, to exhibit a similar diversity of behaviors. This dissertation develops methods for discovering such behavior automatically using multiobjective neuroevolution. First, sensors are designed to allow multiple different interpretations of homeworl objects in the environment (such as predator or prey). Second, evolving networks are given ways of representing multiple policies explicitly via modular architectures.
Third, the leadership mckinsey, set of objectives is dynamically adjusted in order to lead the population towards the most promising areas of the search space. Homeworl? These methods are evaluated in five domains that provide examples of three different types of is ailing our national game task divisions. Isolated tasks are separate from homeworl each other, but a single agent must solve each of them. Interleaved tasks are distinct, but switch back and forth within a single evaluation. Blended tasks do not have clear barriers, because an essay on what is ailing our national, agent may have to perform multiple behaviors at the same time, or learn when to switch between opposing behaviors. Homeworl? The most challenging of the domains is Ms. Pac-Man, a popular classic arcade game with blended tasks. Methods for developing multimodal behavior are shown to essay achieve scores superior to other Ms. Pac-Man results previously published in the literature. These results demonstrate that complex multimodal behavior can be evolved automatically, resulting in homeworl, robust and intelligent agents.
Edmund L. Wong(1). Raising the BAR in Dependable Cooperative Services. The University of Texas at Austin, Department of Computer Science(1). Report# TR-13-09 (dissertation). April 23rd, 2013. NO ABSTRACT. Todd Hester(1).
TEXPLORE: Temporal Difference Reinforcement Learning for Robots and Time-Constrained Domains. The University of Texas at Austin, Department of Computer Science(1). Report# TR-12-32 (dissertation). Proposal Marketing? December 6th, 2012. 281 pages. Robots have the potential to solve many problems in society, because of their ability to work in homeworl, dangerous places doing necessary jobs that no one wants or is able to do. One barrier to their widespread deployment is that they are mainly limited to tasks where it is possible to hand-program behaviors for every situation that may be encountered.
For robots to meet their potential, they need methods that enable them to learn and adapt to novel situations that they were not programmed for. Reinforcement learning (RL) is a paradigm for learning sequential decision making processes that could solve the problems of learning and adaptation on robots. Writing Paper? This thesis identifies four key challenges that must be addressed for homeworl an RL algorithm to be practical for discuss writing robotic control tasks. These RL for Robotics Challenges are: 1) it must learn in very few samples; 2) it must learn in domains with continuous state features; 3) it must handle sensor and/or actuator delays; and 4) it should continually take actions in real-time. This thesis focuses on addressing all four of these challenges. In particular, this thesis is focused on time-constrained domains where the first challenge is critically important.
In these domains, the agent?s lifetime is not long enough for it to explore the domain thoroughly, and homeworl, it must learn in very few samples. Essay On What Is Ailing Game? Although existing RL algorithms successfully address one or more of the RL for Robotics Challenges, no prior algorithm addresses all four of them. To fill this gap, this thesis introduces TEXPLORE, the first algorithm to address all four challenges. TEXPLORE is a model-based RL method that learns a random forest model of the domain which generalizes dynamics to unseen states. Each tree in homeworl, the random forest model represents a hypothesis of the domain?s true dynamics, and mckinsey, the agent uses these hypotheses to explores states that are promising for homeworl the final policy, while ignoring states that do not appear promising. With sample-based planning and discuss writing, a novel parallel architecture, TEXPLORE can select actions continually in homeworl, real-time whenever necessary.
We empirically evaluate each component of TEXPLORE in comparison with other state-of-the-art approaches. In addition, we present modifications of TEXPLORE?s exploration mechanism for marketing different types of domains. The key result of homeworl this thesis is a demonstration of TEXPLORE learning to control the velocity of an autonomous vehicle on-line, in real-time, while running on-board the robot. After controlling the vehicle for only two minutes, TEXPLORE is writing paper able to learn to move the pedals of the vehicle to drive at homeworl the desired velocities. The work presented in essay our national, this thesis represents an important step towards applying RL to robotics and enabling robots to perform more tasks in society. By enabling robots to learn in few actions while acting on-line in real-time on robots with continuous state and actuator delays, TEXPLORE significantly broadens the applicability of RL to robots.
W. Bradley Knox(1). Learning from homeworl Human-Generated Reward. The University of Texas at banking and finance thesis Austin, Department of homeworl Computer Science(1). Report# TR-12-22 (dissertation). Leadership Essay Mckinsey? September 1st, 2012. 263 pages. Homeworl? Robots and other computational agents are increasingly becoming part of our daily lives. They will need to discuss in essay writing be able to learn to homeworl perform new tasks, adapt to novel situations, and understand what is mckinsey wanted by their human users, most of homeworl whom will not have programming skills. To achieve these ends, agents must learn from humans using methods of communication that are naturally accessible to everyone. This thesis presents and on what is ailing, formalizes interactive shaping, one such teaching method, where agents learn from real-valued reward signals that are generated by a human trainer.
In interactive shaping, a human trainer observes an agent behaving in a task environment and homeworl, delivers feedback signals. These signals are mapped to numeric values, which are used by the agent to specify correct behavior. A solution to the problem of interactive shaping maps human reward to some objective such that maximizing that objective generally leads to is ailing game hockey the behavior that the trainer desires. Interactive shaping addresses the aforementioned needs of homeworl real-world agents. This teaching method allows human users to phd research proposal quickly teach agents the specific behaviors that they desire. Further, humans can shape agents without needing programming skills or even detailed knowledge of how to perform the task themselves. In contrast, algorithms that learn autonomously from only a pre-programmed evaluative signal often learn slowly, which is unacceptable for some real-world tasks with real-world costs. These autonomous algorithms additionally have an homeworl, inflexibly defined set of optimal behaviors, changeable only through additional programming. Leadership Mckinsey? Through interactive shaping, human users can (1) specify and teach desired behavior and homeworl, (2) share task knowledge when correct behavior is already indirectly specified by leadership, an objective function.
Additionally, computational agents that can be taught interactively by humans provide a unique opportunity to study how humans teach in a highly controlled setting, in which the computer agent's behavior is parametrized. This thesis answers the following question. How and to what extent can agents harness the information contained in human-generated signals of reward to learn sequential decision-making tasks? The contributions of this thesis begin with an homeworl, operational definition of the problem of interactive shaping. Next, I introduce the TAMER framework, one solution to the problem of interactive shaping, and describe and analyze algorithmic implementations of the framework within multiple domains. This thesis also proposes and empirically examines algorithms for learning from both human reward and in essay writing, a pre-programmed reward function within an MDP, demonstrating two techniques that consistently outperform learning from either feedback signal alone. Subsequently, the thesis shifts its focus from the agent to the trainer, describing two psychological studies in which the homeworl, trainer is manipulated by either changing their perceived role or by having the agent intentionally misbehave at specific times; we examine the effect of these manipulations on trainer behavior and the agent's learned task performance. Lastly, I return to the problem of interactive shaping, for which we examine a space of mappings from human reward to objective functions, where mappings differ by how much the agent discounts reward it expects to receive in the future.
Through this investigation, a deep relationship is identified between discounting, the level of positivity in human reward, and training success. Specific constraints of human reward are identified (i.e., the positive circuits problem), as are strategies for overcoming these constraints, pointing towards interactive shaping methods that are more effective than the already successful TAMER framework. Doran Chakraborty(1). Sample Efficient Multiagent Learning in the Presence of Markovian Agents. The University of bowdoin supplement Texas at Austin, Department of homeworl Computer Science(1). Report# TR-12-19 (dissertation). August 22nd, 2012. 256 pages. The problem of multiagent learning (or MAL) is concerned with the study of how agents can learn and adapt in the presence of other agents that are simultaneously adapting. Leadership? The problem is homeworl often studied in the stylized settings provided by repeated matrix games.
The goal of research this thesis is to develop MAL algorithms for such a setting that achieve a new set of objectives which have not been previously achieved. The thesis makes three main contributions. The first main contribution proposes a novel MAL algorithm, called Convergence with Model Learning and Safety (or CMLeS), that is the first to achieve the following three objectives: (1) converges to following a Nash equilibrium joint-policy in self-play; (2) achieves close to the best response when interacting with a set of memory-bounded agents whose memory size is upper bounded by homeworl, a known value; and (3) ensures an individual return that is very close to its security value when interacting with any other set of agents. The second main contribution proposes another novel MAL algorithm that models a significantly more complex class of agent behavior called Markovian agents, that subsumes the class of memory-bounded agents. Called Joint Optimization against Markovian Agents (or Joma), it achieves the supplement, following two objectives: (1) achieves a joint-return very close to the social welfare maximizing joint-return when interacting with Markovian agents; (2) ensures an individual return that is very close to homeworl its security value when interacting with any other set of our national agents. Finally, the third main contribution shows how a key subroutine of Joma can be extended to solve a broader class of problems pertaining to Reinforcement Learning, called Structure Learning in factored state MDPs. All of the algorithms presented in this thesis are well backed with rigorous theoretical analysis, including an analysis on homeworl sample complexity wherever applicable, as well as representative empirical tests. Alan J Lockett(1). General-Purpose Optimization Through Information-Maximization. The University of Texas at Austin, Department of Computer Science(1).
Report# TR-12-11 (dissertation). May 11th, 2012. Banking Thesis? 482 pages. The primary goal of artificial intelligence research is to develop a machine capable of learning to homeworl solve disparate real-world tasks autonomously, without relying on specialized problem-specific inputs. This dissertation suggests that such machines are realistic: If No Free Lunch theorems were to apply to all real-world problems, then the world would be utterly unpredictable.
In response, the dissertation proposes the and finance, information-maximization principle, which claims that the homeworl, optimal optimization methods make the best use of the information available to them. Phd Research Marketing? This principle results in a new algorithm, evolutionary annealing, which is shown to perform well especially in challenging problems with irregular structure. Bryan Silverthorn(1). A Probabilistic Architecture for Algorithm Portfolios. The University of Texas at Austin, Department of Computer Science(1). Homeworl? Report# TR-12-05 (dissertation).
March 27th, 2012. NO ABSTRACT. Shivaram Kalyanakrishnan(1). Learning Methods for thesis Sequential Decision Making with Imperfect Representations. The University of homeworl Texas at Austin, Department of Computer Sciences(1). Report# TR-11-41 (dissertation). December 1st, 2011.
346 pages. Sequential decision making from experience, or reinforcement learning (RL), is a paradigm that is well-suited for agents seeking to optimize long-term gain as they carry out sensing, decision, and action in an unknown environment. RL tasks are commonly formulated as Markov Decision Problems (MDPs). Learning in finite MDPs enjoys several desirable properties, such as convergence, sample-efficiency, and leadership mckinsey, the ability to realize optimal behavior. Key to achieving these properties is access to a perfect representation, under which the state and action sets of the homeworl, MDP can be enumerated. Writing Research Paper? Unfortunately, RL tasks encountered in the real world commonly suffer from state aliasing, and nearly always they demand generalization. As a consequence, learning in homeworl, practice invariably amounts to learning with imperfect representations. In this dissertation, we examine the effect of writing a medical imperfect representations on different classes of learning methods, and introduce techniques to improve their practical performance. We make four main contributions.
First we introduce ``parameterized learning problems'', a novel experimental methodology facilitating the systematic control of homeworl representational aspects such as state aliasing and generalization. Applying this methodology, we compare the class of on-line value function-based (VF) methods with the class of policy search (PS) methods. Writing Research Paper? Results indicate clear patterns in the effects of representation on homeworl these classes of methods. Our second contribution is essay on what is ailing hockey a deeper analysis of the limits imposed by representations on VF methods; specifically we provide a plausible explanation for the relatively poor performance of these methods on Tetris, the homeworl, popular video game. The third major contribution of this dissertation is a formal study of the ``subset selection'' problem in multi-armed bandits. This problem, which directly affects the sample-efficiency of several commonly-used PS methods, also finds application in areas as diverse as industrial engineering and on-line advertising. Writing A Medical Research Paper? We present new algorithms for homeworl subset selection and bound their performance under different evaluation criteria. Under a PAC setting, our sample complexity bounds indeed improve upon existing ones. As its fourth contribution, this dissertation introduces two hybrid learning architectures for combining the strengths of VF and PS methods.
Under one architecture, these methods are applied in sequence; under the other, they are applied to separate components of a compound task. We demonstrate the effectiveness of these methods on a complex simulation of robot soccer. Bowdoin? In sum, this dissertation makes philosophical, analytical, and methodological contributions towards the development of homeworl robust and in essay writing, automated learning methods for sequential decision making with imperfect representations. Juhyun Lee(1). Robust Color-based Vision for Mobile Robots. The University of homeworl Texas at Austin, Department of Computer Sciences(1). Report# TR-11-40 (dissertation). Essay Our National Hockey? November 30th, 2011.
153 pages. An intelligent agent operating in the real world needs to be fully aware of the homeworl, surrounding environment to make the mckinsey, best decision possible at any given point of time. Homeworl? There are many forms of input devices for a robot that gather real-time information of the surroundings, such as video cameras, laser/sonar range finders, and GPS to name a few. In this thesis, a vision system for a mobile robot navigating through different illumination conditions is investigated. Supplement? Many state-of-the-art object recognition algorithms employ methods running on grayscale images, because using color is difficult for several reasons: (a) The object-of-interest's true colors may not be recorded by the camera hardware due to illumination artifacts, and (b) colors are often too ambiguous to be a robust visual descriptor of an object. In this dissertation, we address these two challenges and present new color-based vision algorithms for mobile robots that are robust and efficient. The first part of this dissertation focuses on the problem of color constancy for mobile robots under different lighting conditions. Specifically, We use a generate-and-test methodology to evaluate which simulated global illumination condition leads to the generated view that most closely matches what the robot actually sees. We assume the diagonal color model when generating views of the object of interest under previously unseen conditions. Homeworl? In the second part of the dissertation, we present a vision framework for mobile robots that enables observation of illumination artifacts in a scene and reasoning about the lighting conditions to achieve robust color-based object tracking.
Before implementing this framework, we first devise a novel vision-based localization correction algorithm with graphics hardware support, and present how to find possibly shaded regions in the recorded scene by using techniques from 3D computer graphics. We then demonstrate how to phd research proposal marketing integrate a color-based object tracker from the first part of this dissertation with our vision framework. Even with the contributions from the first two parts of the dissertation, there remains some degree of uncertainty in robot's assessment of an object's true color. The final part of this dissertation introduces a novel algorithm to overcome this uncertainty in color-based object tracking. We show how an homeworl, agent can achieve robust color-based object tracking by combining multiple different visual characteristics of an object for more accurate robot vision in the real world. Ben Wiedermann(1). Integrating Programming Languages and Databases via Program Analysis and Language Design. The University of Texas at Austin, Department of Computer Sciences(1). Report# TR-11-29 (dissertation). June 29th, 2011. 186 pages.
Researchers and practitioners alike have long sought to integrate programming languages and databases. Today's integration solutions focus on the data-types of the two domains, but today's programs lack transparency. A transparently persistent program operates over proposal all objects in a uniform manner, regardless of whether those objects reside in homeworl, memory or in a database. Transparency increases modularity and lowers the barrier of adoption in industry. Unfortunately, fully transparent programs perform so poorly that no one writes them. The goal of this dissertation is to increase the performance of these programs to make transparent persistence a viable programming paradigm. Writing? This dissertation contributes two novel techniques that integrate programming languages and databases. Our first contribution -- called query extraction -- is based purely on program analysis. Query extraction analyzes a transparent, object-oriented program that retrieves and filters collections of objects. Some of these objects may be persistent, in homeworl, which case the program contains implicit queries of persistent data. Our interprocedural program analysis extracts these queries from the program, translates them to explicit queries, and transforms the transparent program into an equivalent one that contains the explicit queries.
Query extraction enables programmers to write programs in essay, a familiar, modular style and to rely on the compiler to homeworl transform their program into one that performs well. Marketing? Our second contribution -- called RBI-DB+ -- is an extension of a new programming language construct called a batch block. A batch block provides a syntactic barrier around transparent code. It also provides a latency guarantee: If the batch block compiles, then the homeworl, code that appears in it requires only one client-server communication trip. Researchers previously have proposed batch blocks for leadership databases. However, batch blocks cannot be modularized or composed, and database batch blocks do not permit programmers to modify persistent data. We extend database batch blocks to homeworl address these concerns and writing, formalize the results. Today's technologies integrate the data-types of programming languages and databases, but they discourage programmers from using procedural abstraction. Our contributions restore procedural abstraction's use in enterprise applications, without sacrificing performance. We argue that industry should combine our contributions with data-type integration. Homeworl? The result would be a robust, practical integration of discuss in essay programming languages and databases.
David Pardoe(1). Adaptive Trading Agent Strategies Using Market Experience. The University of Texas at Austin, Department of Computer Sciences(1). Homeworl? Report# TR-11-26 (dissertation). May 16th, 2011. 348 pages. Along with the growth of electronic commerce has come an interest in developing autonomous trading agents. Often, such agents must interact directly with other market participants, and essay supplement, so the behavior of these participants must be taken into account when designing agent strategies. One common approach is to build a model of the market, but this approach requires the use of historical market data, which may not always be available. This dissertation addresses such a case: that of an agent entering a new market in which it has no previous experience.
While the homeworl, agent could adapt by essay supplement, learning about the behavior of other market participants, it would need to do so in an online fashion. The agent would not necessarily have to learn from homeworl scratch, however. If the agent had previous experience in similar markets, it could use this experience to tailor its learning approach to its particular situation. This dissertation explores methods that a trading agent could use to discuss take advantage of previous market experience when adapting to a new market. Two distinct learning settings are considered.
In the first, an agent acting as an auctioneer must adapt the parameters of an homeworl, auction mechanism in response to writing research paper bidder behavior, and a reinforcement learning approach is used. The second setting concerns agents that must adapt to the behavior of competitors in homeworl, two scenarios from the Trading Agent Competition: supply chain management and ad auctions. Here, the agents use supervised learning to model the essay mckinsey, market. In both settings, methods of adaptation can be divided into four general categories: i) identifying the most similar previously encountered market, ii) learning from the current market only, iii) learning from the current market but using previous experience to tune the learning algorithm, and homeworl, iv) learning from both the current and previous markets. The first contribution of this dissertation is the introduction and thesis, experimental validation of a number of novel algorithms for market adaptation fitting these categories.
The second contribution is an exploration of the homeworl, degree to which the writing a medical, quantity and nature of market experience impact the relative performance of methods from these categories. Uli Grasemann(1). A Computational Model of Language Pathology in homeworl, Schizophrenia. The University of Texas at Austin, Department of Computer Sciences(1). Report# TR-11-11 (dissertation). March 17th, 2011. 147 pages. No current laboratory test can reliably identify patients with schizophrenia. Instead, key symptoms are observed via language, including derailment, where patients cannot follow a coherent storyline, and delusions, where false beliefs are repeated as fact.
Brain processes underlying these and other symptoms remain unclear, and characterizing them would greatly enhance our understanding of schizophrenia. In this situation, computational models can be valuable tools to formulate testable hypotheses and to complement clinical research. This dissertation aims to capture the essay, link between biology and schizophrenic symptoms using DISCERN, a connectionist model of human story processing. Competing illness mechanisms proposed to underlie schizophrenia are simulated in DISCERN, and are evaluated at the level of narrative language, the homeworl, same level used to diagnose patients. The result is the first simulation of a speaker with schizophrenia. Of all illness models, hyperlearning, a model of overly intense memory consolidation, produced the best fit to essay on what our national hockey patient data, as well as compelling models of homeworl delusions and derailments. Phd Research Proposal? If validated experimentally, the hyperlearning hypothesis could advance the current understanding of schizophrenia, and provide a platform for simulating the effects of future treatments.
Allen Clement(1). UpRight Fault Tolerance. The University of Texas at Austin, Department of Computer Sciences(1). Report# TR-11-10 (dissertation). March 15th, 2011. 235 pages. Experiences with computer systems indicate an homeworl, inconvenient truth: computers fail and bowdoin essay supplement, they fail in interesting ways. Although using redundancy to protect against fail- stop failures is common practice, non-fail-stop computer and homeworl, network failures occur for a variety of reasons including power outage, disk or memory corruption, NIC malfunction, user error, operating system and on what, application bugs or misconfiguration, and many others. Homeworl? The impact of these failures can be dramatic, ranging from service unavailability to stranding airplane passengers on the runway to essay our national game hockey companies closing. While high-stakes embedded systems have embraced Byzantine fault tolerant techniques, general purpose computing continues to rely on techniques that are fundamentally crash tolerant. In a general purpose environment, the current best practices response to non-fail-stop failures can charitably be described as pragmatic: identify a root cause and add checksums to prevent that error from happening again in the future.
Pragmatic responses have proven effective for homeworl patching holes and protecting against phd research, faults once they have occurred; unfortunately the initial damage has already been done, and homeworl, it is banking and finance difficult to say if the patches made to homeworl address previous faults will protect against leadership essay, future failures. We posit that an end-to-end solution based on Byzantine fault tolerant (BFT) state machine replication is an efficient and homeworl, deployable alternative to current ad hoc approaches favored in general purpose computing. The replicated state machine approach ensures that multiple copies of the same deterministic application execute requests in the same order and provides end-to-end assurance that independent transient failures will not lead to unavailability or incorrect responses. On What Our National Game? An efficient and homeworl, effective end-to-end solution covers faults that have already been observed as well as failures that have not yet occurred, and it provides structural confidence that developers won?t have to track down yet another failure caused by some unpredicted memory, disk, or network behavior. While the promise of end-to-end failure protection is intriguing, significant technical and discuss in essay writing, practical challenges currently prevent adoption in general purpose computing environments. On the technical side, it is important that end-to-end solutions maintain the performance characteristics of deployed systems: if end-to- end solutions dramatically increase computing requirements, dramatically reduce throughput, or dramatically increase latency during normal operation then end- to-end techniques are a non-starter. On the practical side, it is important that end-to-end approaches be both comprehensible and easy to incorporate: if the cost of end-to-end solutions is rewriting an application or trusting intricate and arcane protocols, then end-to-end solutions will not be adopted. Homeworl? In this thesis we show that BFT state machine replication can and be used in phd research proposal, deployed systems.
Reaching this goal requires us to address both the technical and practical challenges previously mentioned. Homeworl? We revisiting disparate research results from the last decade and tweak, refine, and revise the core ideas to fit together into a coherent whole. Addressing the practical concerns requires us to simplify the process of incorporating BFT techniques into legacy applications. Nicholas K. Jong(1). Structured Exploration for Reinforcement Learning. The University of Texas at Austin, Department of Computer Sciences(1). Report# TR-10-40 (dissertation). December 17th, 2010. 280 pages. Reinforcement Learning (RL) offers a promising approach towards achieving the dream of banking and finance autonomous agents that can behave intelligently in the real world.
Instead of requiring humans to determine the correct behaviors or sufficient knowledge in advance, RL algorithms allow an agent to acquire the necessary knowledge through direct experience with its environment. Early algorithms guaranteed convergence to homeworl optimal behaviors in limited domains, giving hope that simple, universal mechanisms would allow learning agents to succeed at phd research proposal marketing solving a wide variety of complex problems. In practice, the field of RL has struggled to apply these techniques successfully to the full breadth and depth of real-world domains. This thesis extends the reach of homeworl RL techniques by demonstrating the synergies among certain key developments in a medical, the literature. The first of these developments is homeworl model-based exploration, which facilitates theoretical convergence guarantees in finite problems by explicitly reasoning about an agent's certainty in its understanding of its environment. A second branch of research studies function approximation, which generalizes RL to infinite problems by a medical research paper, artificially limiting the homeworl, degrees of essay on what is ailing our national hockey freedom in an agent's representation of its environment. The final major advance that this thesis incorporates is hierarchical decomposition, which seeks to improve the efficiency of learning by endowing an agent's knowledge and behavior with the gross structure of its environment. Each of these ideas has intuitive appeal and sustains substantial independent research efforts, but this thesis defines the first RL agent that combines all their benefits in the general case. In showing how to combine these techniques effectively, this thesis investigates the twin issues of generalization and exploration, which lie at the heart of efficient learning.
This thesis thus lays the groundwork for the next generation of RL algorithms, which will allow scientific agents to know when it suffices to estimate a plan from current data and when to accept the potential cost of running an experiment to gather new data. Yulin Li(1). The Diagrammatic Specification and Automatic Generation of Geometry Subroutines. The University of Texas at homeworl Austin, Department of Computer Sciences(1). Essay Supplement? Report# TR-10-32 (dissertation). August 30th, 2010. 165 pages.
Programming has advanced a great deal since the appearance of the stored-program architecture. Through the successive generations of homeworl machine codes, assembly languages, high-level languages, and object-oriented languages, the leadership, drive has been toward program descriptions that express more meaning in a shorter space. This trend continues today with domain-specific languages. However, conventional languages rely on a textual formalism (commands, statements, lines of homeworl code) to capture the programmer's intent, which, regardless of its level of abstraction, imposes inevitable overheads. Before successful programming activities can take place, the syntax has to be mastered, names and keywords memorized, the leadership essay, library routines mastered, etc. Existing visual programming languages avoid some of these overheads, but do not release the programmer from the task of specifying the program logic, which consumes the main portion of programming time and also is the major source of difficult bugs. Our work aims to minimize the demands a formalism imposes on the programmer of geometric subroutines other than what is inherent in the problem itself. Our approach frees the programmer from syntactic constraints and generates logically correct programs automatically from program descriptions in the form of diagrams. Homeworl? To write a program, the programmer simply draws a few diagrams to depict the problem context and specifies all the necessary parameters through menu operations.
Diagrams are succinct, easy to learn, and intuitive to use. Proposal? They are much easier to modify than code, and they help the user visualize and analyze the homeworl, problem, in addition to providing information to the computer. Furthermore, diagrams describe a situation rather than a task and thus are reusable for different tasks?in general, a single diagram can generate many programs. For these reasons, we have chosen diagrams as the main specification mechanism. In addition, we leverage the power of essay automatic inference to homeworl reason about diagrams and generic components?the building blocks of our programs?and discover the logic for assembling these components into correct programs. Leadership? To facilitate inference, symbolic facts encode entities present in homeworl, the diagrams, their spatial relationships, and the preconditions and effects of reusable components. We have developed a reference implementation and tested it on a number of real-world examples to and finance thesis demonstrate the homeworl, feasibility and efficacy of essay mckinsey our approach. Indrajit Roy(1).
Protecting Sensitive Information from homeworl Untrusted Code. The University of Texas at Austin, Department of Computer Sciences(1). Report# TR-10-31 (dissertation). August 27th, 2010. 137 pages. As computer systems support more aspects of modern life, from finance to health care, security is becoming increasingly important. However, building secure systems remains a challenge.
Software continues to have security vulnerabilities due to reasons ranging from programmer errors to inadequate programming tools. Because of these vulnerabilities we need mechanisms that protect sensitive data even when the software is untrusted. This dissertation shows that secure and practical frameworks can be built for phd research proposal protecting users' data from untrusted applications in both desktop and cloud computing environment. Laminar is a new framework that secures desktop applications by enforcing policies written as information flow rules. Homeworl? Information flow control, a form of mandatory access control, enables programmers to write powerful, end-to-end security guarantees while reducing the a medical paper, amount of trusted code.
Current programming abstractions and implementations of this model either compromise end-to-end security guarantees or require substantial modifications to applications, thus deterring adoption. Laminar addresses these shortcomings by exporting a single set of abstractions to control information flows through operating system resources and homeworl, heap-allocated objects. Programmers express security policies by a medical, labeling data and represent access restrictions on code using a new abstraction called a security region. The Laminar programming model eases incremental deployment, limits dynamic security checks, and homeworl, supports multithreaded programs that can access heterogeneously labeled data. In large scale, distributed computations safeguarding information requires solutions beyond mandatory access control. An important challenge is to on what is ailing our national ensure that the computation, including its output, does not leak sensitive information about the inputs. Homeworl? For untrusted code, access control cannot guarantee that the output does not leak information.
This dissertation proposes Airavat, a MapReduce-based system which augments mandatory access control with differential privacy to guarantee security and privacy for distributed computations. Data providers control the security policy for their sensitive data, including a mathematical bound on potential privacy violations. Users without security expertise can perform computations on the data; Airavat prevents information leakage beyond the data provider's policy. Our prototype implementation of essay supplement Airavat demonstrates that several data mining tasks can be performed in a privacy preserving fashion with modest performance overheads. Gregory Kuhlmann(1). Automated Domain Analysis and Transfer Learning for General Game Playing. Homeworl? The University of Texas at Austin, Department of Computer Sciences(1).
Report# TR-10-30 (dissertation). August 17th, 2010. 150 pages. Writing Research Paper? Creating programs that can play games such as chess, checkers, and backgammon, at a high level has long been a challenge and benchmark for AI. Computer game playing is arguably one of homeworl AI's biggest success stories. Several game playing systems developed in the past, such as Deep Blue, Chinook and TD-Gammon have demonstrated competitive play against the top human players. However, such systems are limited in that they play only leadership one particular game and homeworl, they typically must be supplied with game-specific knowledge. While their performance is impressive, it is difficult to determine if their success is due to generally applicable techniques or due to the human game analysis.
A general game player is an agent capable of taking as input a description of a game's rules and proceeding to play without any subsequent human input. In doing so, the agent, rather than the human designer, is responsible for the domain analysis. Developing such a system requires the integration of several AI components, including theorem proving, feature discovery, heuristic search, and writing research paper, machine learning. In the general game playing scenario, the player agent is homeworl supplied with a game's rules in a formal language, prior to match play. This thesis contributes a collection of general methods for analyzing these game descriptions to writing improve performance. Homeworl? Prior work on automated domain analysis has focused on generating heuristic evaluation functions for use in search. The thesis builds upon this work by introducing a novel feature generation method. Also, I introduce a method for generating and comparing simple evaluation functions based on essay supplement these features.
I describe how more sophisticated evaluation functions can be generated through learning. Finally, this thesis demonstrates the utility of domain analysis in facilitating knowledge transfer between games for improved learning speed. Homeworl? The contributions are fully implemented with empirical results in proposal marketing, the general game playing system. Kurt Dresner(1). Autonomous Intersection Management. The University of Texas at Austin, Department of Computer Sciences(1). Report# TR-10-01 (dissertation).
January 8th, 2010. 216 pages. Artificial intelligence research is ushering in an era of sophisticated, mass-market transportation technology. Homeworl? While computers can fly a passenger jet better than a human pilot, people still face the dangerous yet tedious task of driving. Intelligent Transportation Systems (ITS) is the field focused on integrating information technology with vehicles and transportation infrastructure. Recent advances in ITS point to a future in which vehicles handle the essay mckinsey, vast majority of the driving task. Homeworl? Once autonomous vehicles become popular, interactions amongst multiple vehicles will be possible. Current methods of vehicle coordination will be outdated. The bottleneck for writing a medical research paper efficiency will no longer be drivers, but the mechanism by homeworl, which those drivers' actions are coordinated. Current methods for controlling traffic cannot exploit the superior capabilities of autonomous vehicles.
This thesis describes a novel approach to managing autonomous vehicles at intersections that decreases the amount of time vehicles spend waiting. Drivers and intersections in this mechanism are treated as autonomous agents in a multiagent system. In this system, agents use a new approach built around a detailed communication protocol, which is also a contribution of the thesis. In simulation, I demonstrate that this mechanism can significantly outperform current intersection control technology---traffic signals and stop signs. This thesis makes several contributions beyond the mechanism and protocol. First, it contains a distributed, peer-to-peer version of the protocol for low-traffic intersections. Supplement? Without any requirement of specialized infrastructure at the intersection, such a system would be inexpensive and easy to deploy at intersections which do not currently require a traffic signal.
Second, it presents an analysis of the mechanism's safety, including ways to mitigate some failure modes. Homeworl? Third, it describes a custom simulator, written for this work, which will be made publicly available following the publication of the thesis. Fourth, it explains how the mechanism is essay ``backward-compatible'' so that human drivers can use it alongside autonomous vehicles. Fifth, it explores the implications of using the mechanism at multiple proximal intersections. The mechanism, along with all available modes of operation, is implemented and tested in homeworl, simulation, and I present experimental results that strongly attest to the efficacy of this approach. Nalini Belaramani(1). Policy Architecture for Distributed Storage Systems. The University of Texas at Austin, Department of Computer Sciences(1). Leadership Essay? Report# TR-09-23 (dissertation). Homeworl? August 12th, 2009.
233 pages. Distributed data storage is a building block for many distributed systems such as mobile file systems, web service replication systems, enterprise file systems, etc. New distributed data storage systems are frequently built as new environment, requirements or workloads emerge. The goal of this dissertation is to develop the science of distributed storage systems by making it easier to build new systems. In Essay Writing? In order to homeworl achieve this goal, it proposes a new policy architecture, PADS, that is based on two key ideas: first, by providing a set of common mechanisms in an underlying layer, new systems can be implemented by discuss in essay, defining policies that orchestrate these mechanisms; second, policy can be separated into homeworl routing and discuss in essay, blocking policy, each addresses different parts of the system design. Routing policy specifies how data flow among nodes in order to meet performance, availability, and resource usage goals, whereas blocking policy specifies when it is safe to access data in order to meet consistency and durability goals. This dissertation presents a PADS prototype that defines a set of homeworl distributed storage mechanisms that are sufficiently flexible and general to support a large range of systems, a small policy API that is easy to use and captures the right abstractions for distributed storage, and a declarative language for specifying policy that enables quick, concise implementations of complex systems. In Essay? We demonstrate that PADS is able to homeworl significantly reduce development effort by constructing a dozen significant distributed storage systems spanning a large portion of the design space over the prototype.
We find that each system required only a couple of weeks of implementation effort and required a few dozen lines of policy code. Patrick Beeson. Creating and Utilizing Symbolic Representations of Spatial Knowledge using Mobile Robots. The University of Texas at Austin, Department of Computer Sciences. Report# AI08-7 (ai dissertation). October 24, 2008. 248 pages. A map is a description of an environment allowing an bowdoin supplement, agent---a human,or in our case a mobile robot---to plan and homeworl, perform effective actions.From a single location, an agent's sensors can not observe the whole structure of a complex, large environment.
For this reason, the agent must build a map from observations gathered over time and space. We distinguish between large-scale space, with spatial structure larger than the agent's sensory horizon, and small-scale space, with structure within the sensory horizon. We propose a factored approach to mobile robot map-building that handles qualitatively different types of uncertainty by banking and finance, combining the strengths of topological and metrical approaches. Our framework is based on a computational model of the human cognitive map; thus it allows robust navigation and communication within several different spatial ontologies. Our approach factors the homeworl, mapping problem into natural sub-goals: building a metrical representation for local small-scale spaces; finding a topological map that represents the qualitative structure of essay supplement large-scale space; and (when necessary) constructing a metrical representation for large-scale space using the homeworl, skeleton provided by the topological map. Banking Thesis? The core contributions of this thesis are a formal description of the Hybrid Spatial Semantic Hierarchy (HSSH), a framework for both small-scale and large-scale representations of homeworl space, and banking and finance thesis, an implementation of the HSSH that allows a robot to ground the large-scale concepts of place and path in a metrical model of the local surround. Homeworl? Given metrical models of the robot's local surround, we argue that places at decision points in the world can be grounded by the use of a primitive called a gateway. Discuss? Gateways separate different regions in space and have a natural description at homeworl intersections and in doorways. We provide an research, algorithmic definition of gateways, a theory of how they contribute to the description of paths and places, and practical uses of gateways in spatial mapping and learning. Matthew E. Taylor.
Autonomous Inter-Task Transfer in Reinforcement Learning Domains. The University of Texas at Austin, Department of Computer Sciences. Report# AI08-5 (ai dissertation). Homeworl? July 10, 2008. 319 pages. Reinforcement learning (RL) methods have become popular in recent years because of their ability to solve complex tasks with minimal feedback.
While these methods have had experimental successes and have been shown to exhibit some desirable properties in theory, the basic learning algorithms have often been found slow in practice. Therefore, much of the phd research marketing, current RL research focuses on speeding up learning by homeworl, taking advantage of domain knowledge, or by better utilizing agents' experience. The ambitious goal of transfer learning, when applied to RL tasks, is to accelerate learning on writing research some target task after training on a different, but related, source task. This dissertation demonstrates that transfer learning methods can successfully improve learning in RL tasks via experience from previously learned tasks. Transfer learning can increase RL's applicability to difficult tasks by allowing agents to generalize their experience across learning problems.
This dissertation presents inter-task mappings, the homeworl, first transfer mechanism in this area to successfully enable transfer between tasks with different state variables and actions. Inter-task mappings have subsequently been used by a number of transfer researchers. A set of six transfer learning algorithms are then introduced. While these transfer methods differ in phd research proposal, terms of what base RL algorithms they are compatible with, what type of knowledge they transfer, and what their strengths are, all utilize the same inter-task mapping mechanism. These transfer methods can all successfully use mappings constructed by a human from domain knowledge, but there may be situations in which domain knowledge is unavailable, or insufficient, to homeworl describe how two given tasks are related. We therefore also study how inter-task mappings can be learned autonomously by leveraging existing machine learning algorithms. Our methods use classification and regression techniques to successfully discover similarities between data gathered in pairs of tasks, culminating in what is currently one of the most robust mapping-learning algorithms for RL transfer. Combining transfer methods with these similarity-learning algorithms allows us to empirically demonstrate the plausibility of autonomous transfer.
We fully implement these methods in four domains (each with different salient characteristics), show that transfer can significantly improve an agent's ability to learn in each domain, and explore the limits of transfer's applicability. Jiandan Zheng. URA: A Universal Data Replication Architecture. The University of leadership essay mckinsey Texas at Austin, Department of Computer Sciences. Report# TR-08-35 (dissertation). August 22, 2008. Homeworl? 177 pages. Data replication is a key building block for large-scale distributed systems to improve availability, performance, and scalability. Because there is a fundamental trade-off between performance and consistency as well as between availability and consistency, systems must make trade-offs among these factors based on the demands and technologies of their target environments and workloads.
Unfortunately, existing replication protocols and mechanisms are intrinsically entangled with specific policy assumptions. Therefore, to banking accommodate new trade-offs for homeworl new policy requirements, developers have to either build a new replication system from scratch or modify existing mechanisms. This dissertation presents a universal data replication architecture (URA) that cleanly separates mechanism and policy and paper, supports Partial Replication (PR), Any Consistency (AC), and Topology Independence (TI) simultaneously. Our architecture yields two significant advantages. First, by providing a single set of mechanisms that capture the common underlying abstractions for homeworl data replication, URA can serve as a common substrate for building and deploying new replication systems. It therefore can significantly reduce the effort required to construct or modify a replication system. Second, by providing a set of general and in essay writing, flexible mechanisms independent of homeworl any specific policy, URA enables better trade-offs than any current system can provide. In particular, URA can simultaneously provide the three PRACTI properties while any existing system can provide at most two of on what is ailing them.
Our experimental results and case-study systems confirm that universal data replication architecture is a way to build better replication systems and a better way to build replication systems. Alden, Matthew E. MARLEDA: Effective Distribution Estimation Through Markov Random Fields. The University of homeworl Texas at Austin, Departments of Computer Sciences. Discuss In Essay? Report# AI07-349 (dissertation). September 24, 2007.
138 pages. Many problems within the biological sciences, such as DNA sequencing, protein structure prediction, and molecular docking, are being approached computationally. Homeworl? These problems require sophisticated solution methods that understand the complex natures of biological domains. Traditionally, such solution methods are problem specific, but recent advances in generic problem-solvers furnish hope for a medical research a new breed of computational tools. The challenge is to develop methods that can automatically learn or acquire an understanding of a complex problem domain. Estimation of Distribution Algorithms (EDAs) are generic search methods that use statistical models to learn the structure of a problem domain. Homeworl? EDAs have been successfully applied to many difficult search problems, such as circuit design, optimizing Ising spin glasses, and various scheduling tasks. However, current EDAs contain ad hoc limitations that reduce their capacity to solve hard problems. This dissertation presents a new EDA method, the Markovian Learning Estimation of Distribution Algorithm (MARLEDA), that employs a Markov random field model. The model is learned in a novel way that overcomes previous ad hoc limitations. MARLEDA is shown to perform well on essay standard benchmark search tasks.
A multiobjective extension of MARLEDA is developed for use in predicting the secondary structure of homeworl RNA molecules. The extension is shown to produce high-quality predictions in comparison with several contemporary methods, laying the groundwork for a new computational tool for RNA researchers. De Paula, Judah B. Modeling the proposal, self-organization of color selectivity in the visual cortex. The University of homeworl Texas at Austin, Department of writing research paper Computer Sciences. Report# AI07-347 (dissertation). August 21, 2007. 146 pages.
How does the visual cortex represent and homeworl, process color? Experimental evidence from macaque monkey suggests that cells selective for color are organized into mckinsey small, spatially separated blobs in V1, and stripes in V2. This organization is strikingly different from homeworl that of orientation and ocular dominance maps, which consist of large, spatially contiguous patterns. In this dissertation, a self-organizing model of the early visual cortex is in essay constructed using natural color image input. The modeled V1 develops realistic color-selective receptive fields, ocular dominance stripes, orientation maps, and color-selective regions, while the modeled V2 also creates realistic color-selective and homeworl, orientation-selective neurons. V1 color-selective regions are generally located in the center of ocular dominance stripes as they are in writing paper, biological maps; the model predicts that color-selective regions become more widespread in both cortical regions when the amount of color in the training images is increased. The model also predicts that in V1 there are three types of color-selective regions (red-selective, green-selective, and blue-selective), and that a unique cortical activation pattern exists for each of the HSV colors. In both V1 and V2, when regions of different color-selectivity are located nearby, bands of color form with gradually changing color preferences.
The model also develops lateral connections between cells that are selective for homeworl similar orientations, matching previous experimental results, and predicts that cells selective for color primarily connect to other cells with similar chromatic preferences. Thus the model replicates the known data on leadership the organization of color preferences in V1 and homeworl, V2, provides a detailed explanation for how this structure develops and hockey, functions, and leads to concrete predictions to test in future experiments. Kate, Rohit J. Learning for Semantic Parsing with Kernels under Various Forms of homeworl Supervision. The University of Texas at Austin, Department of Computer Sciences. Writing Research? Report# AI07-346 (dissertation). August 21, 2007. 174 pages. Semantic parsing involves deep semantic analysis that maps natural language sentences to their formal executable meaning representations. This is a challenging problem and homeworl, is critical for developing computing systems that understand natural language input.
This thesis presents a new machine learning approach for semantic parsing based on string-kernel-based classification. Proposal? It takes natural language sentences paired with their formal meaning representations as training data. For every production in the formal language grammar, a Support-Vector Machine (SVM) classifier is homeworl trained using string similarity as the kernel. Meaning representations for novel natural language sentences are obtained by finding the most probable semantic parse using these classifiers. This method does not use any hard-matching rules and unlike previous and bowdoin, other recent methods, does not use grammar rules for natural language, probabilistic or otherwise, which makes it more robust to noisy input. Besides being robust, this approach is homeworl also flexible and able to mckinsey learn under a wide range of supervision, from extra to weaker forms of supervision. Homeworl? It can easily utilize extra supervision given in the form of syntactic parse trees for natural language sentences by using a syntactic tree kernel instead of marketing a string kernel. Its learning algorithm can also take advantage of detailed supervision provided in homeworl, the form of semantically augmented parse trees.
A simple extension using transductive SVMs enables the system to do semi-supervised learning and and finance, improve its performance utilizing unannotated sentences which are usually easily available. Another extension involving EM-like retraining makes the system capable of learning under ambiguous supervision in which the correct meaning representation for each sentence is not explicitly given, but instead a set of possible meaning representations is given. This weaker and more general form of supervision is better representative of homeworl a natural training environment for a language-learning system requiring minimal human supervision. For a semantic parser to writing work well, conformity between natural language and meaning representation grammar is necessary. Homeworl? However meaning representation grammars are typically designed to best suit the application which will use the meaning representations with little consideration for how well they correspond to writing a medical research paper natural language semantics. We present approaches to homeworl automatically transform meaning representation grammars to make them more compatible with natural language semantics and hence more suitable for learning semantic parsers. Finally, we also show that ensembles of different semantic parser learning systems can obtain the best overall performance. Bunescu, Razvan Constantin. Learning for discuss in essay Information Extraction: From Named Entity Recognition and Disambiguation To Relation Extraction.
The University of Texas at Austin, Department of Computer Sciences. Report# AI07-345 (dissertation). August 17, 2007. 168 pages. Homeworl? Information Extraction, the task of locating textual mentions of bowdoin essay specific types of entities and their relationships, aims at homeworl representing the information contained in essay game hockey, text documents in a structured format that is more amenable to applications in data mining, question answering, or the semantic web. The goal of homeworl our research is to design information extraction models that obtain improved performance by supplement, exploiting types of evidence that have not been explored in previous approaches. Since designing an extraction system through introspection by a domain expert is homeworl a laborious and time consuming process, the focus of this thesis will be on methods that automatically induce an extraction model by training on a dataset of manually labeled examples. Named Entity Recognition is an information extraction task that is concerned with finding textual mentions of entities that belong to a predefined set of categories. Writing A Medical Paper? We approach this task as a phrase classification problem, in which candidate phrases from the same document are collectively classified.
Global correlations between candidate entities are captured in homeworl, a model built using the thesis, expressive framework of Relational Markov Networks. Additionally, we propose a novel tractable approach to phrase classification for named entity recognition based on homeworl a special Junction Tree representation. Classifying entity mentions into a predefined set of categories achieves only a partial disambiguation of the names. This is paper further refined in the task of Named Entity Disambiguation, where names need to homeworl be linked to their actual denotations. In our research, we use Wikipedia as a repository of named entities and propose a ranking approach to disambiguation that exploits learned correlations between words from the name context and categories from the Wikipedia taxonomy. A Medical Paper? Relation Extraction refers to finding relevant relationships between entities mentioned in text documents. Our approaches to this information extraction task differ in the type and the amount of supervision required. We first propose two relation extraction methods that are trained on documents in homeworl, which sentences are manually annotated for the required relationships. In the first method, the extraction patterns correspond to our national game hockey sequences of words and word classes anchored at two entity names occurring in homeworl, the same sentence.
These are used as implicit features in a generalized subsequence kernel, with weights computed through training of Support Vector Machines. In the second approach, the implicit extraction features are focused on the shortest path between the phd research proposal, two entities in the word-word dependency graph of the sentence. Finally, in homeworl, a significant departure from previous learning approaches to relation extraction, we propose reducing the amount of required supervision to only a handful of pairs of entities known to leadership essay mckinsey exhibit or not exhibit the desired relationship. Each pair is associated with a bag of sentences extracted automatically from homeworl a very large corpus. We extend the subsequence kernel to leadership essay mckinsey handle this weaker form of supervision, and describe a method for weighting features in order to focus on those correlated with the target relation rather than with the individual entities. The resulting Multiple Instance Learning approach offers a competitive alternative to previous relation extraction methods, at a significantly reduced cost in human supervision. Provost, Jefferson. Reinforcement Learning in High-Diameter, Continuous Environments. The University of Texas at Austin, Department of Computer Sciences. Report# AI07-344 (dissertation).
August 17, 2007. 116 pages. Many important real-world robotic tasks have high diameter, that is, their solution requires a large number of primitive actions by the robot. For example, they may require navigating to distant locations using primitive motor control commands. In addition, modern robots are endowed with rich, high-dimensional sensory systems, providing measurements of a continuous environment. Reinforcement learning (RL) has shown promise as a method for homeworl automatic learning of robot behavior, but current methods work best on low-diameter, low-dimensional tasks.
Because of this problem, the success of RL on real-world tasks still depends on human analysis of the bowdoin supplement, robot, environment, and task to provide a useful set of perceptual features and homeworl, an appropriate decomposition of the task into subtasks. This thesis presents Self-Organizing Distinctive-state Abstraction (SODA) as a solution to this problem. Using SODA a robot with little prior knowledge of its sensorimotor system, environment, and task can automatically reduce the effective diameter of its tasks. First it uses a self-organizing feature map to learn higher level perceptual features while exploring using primitive, local actions. Then, using the learned features as input, it learns a set of high-level actions that carry the robot between perceptually distinctive states in the environment. Experiments in two robot navigation environments demonstrate that SODA learns useful features and discuss in essay, high-level actions, that using these new actions dramatically speeds up learning for high-diameter navigation tasks, and that the method scales to large (building-sized) robot environments. These experiments demonstrate SODAs effectiveness as a generic learning agent for mobile robot navigation, pointing the way toward developmental robots that learn to understand themselves and homeworl, their environments through experience in the world, reducing the need for human engineering for essay each new robotic application. Wong, Yuk Wah. Learning for Semantic Parsing and Natural Language Generation Using Statistical Machine Translation Techniques.
The University of Texas at Austin, Department of Computer Sciences. Report# AI07-343 (dissertation). August 10, 2007. 203 pages. One of the main goals of natural language processing (NLP) is to build automated systems that can understand and generate human lanugages. This goal has so far remained elusive.
Existing hand-crafted systems can provide in-depth analysis of domain sub-languages, but are often notoriously fragile and homeworl, costly to build. Existing machine-learned systems are considerably more robust, but are limited to relatively shallow NLP tasks. In this thesis, we present novel statistical methods for robust natural language understanding and generation. We focus on two important sub-tasks, semantic parsing and tactical generation. The key idea is that both tasks can be treated as the translation between natural languages and formal meaning representation languages, and therefore, can be performed using state-of-the-art statistical machine translation techniques. Specifically, we use a technique called synchronous parsing, which has been extensively used in writing, syntax-based machine translation, as the unifying framework for semantic parsing and homeworl, tactical generation. The parsing and generation algorithms learn all of their linguistic knowledge from annotated corpora, and can handle natural-language sentences that are conceptually complex. A nice feature of our algorithms is in essay that the semantic parsers and homeworl, tactical generators share the same learned synchronous grammars. Moreover, charts are used as the unifying language-processing architecture for efficient parsing and generation.
Therefore, the generators are said to be the inverse of the parsers, an elegant property that has been widely advocated. Furthermore, we show that our parsers and generators can handle formal meaning representation languages containing logical variables, including predicate logic. Our basic semantic parsing algorithm is called WASP. Most of the other parsing and generation algorithms presented in essay, this thesis are extensions of WASP or its inverse. We demonstrate the homeworl, effectiveness of our parsing and generation algorithms by performing experiments in two real-world, restricted domains. Experimental results show that our algorithms are more robust and accurate than the currently best systems that require similar supervision. Our work is writing paper also the first attempt to use the same automatically-learned grammar for both parsing and generation. Unlike previous systems that require manually-constructed grammars and homeworl, lexicons, our systems require much less knowledge engineering and can be easily ported to other languages and domains. Ramamoorthy, Subramanian. Task Encoding, Motion Planning and Intelligent Control using Qualitative Models. The University of Texas at Austin, Department of Computer Sciences.
Report# AI07-342 (dissertation (ph.d., advisor: prof. ben kuipers)). July 10, 2007. 179 pages. This dissertation addresses the essay on what is ailing game, problem of trajectory generation for dynamical robots operating in unstructured environments in the absence of homeworl detailed models of the essay, dynamics of the environment or of the robot itself. Homeworl? We factor this problem into the subproblem of in essay task variation, and the subproblem of imprecision in models of dynamics. The problem of task variation is handled by defining task level control strategies in terms of qualitative models that support structurally stable phase space trajectories. Such models define low-dimensional spaces within which it is possible to select trajectories that constitute plans for achieving a desired goal. The second problem, that of model imprecision, arises when embedding the resulting trajectories in the phase space of the more complex higher-dimensional system that actually performs the task of interest. Homeworl? Trajectories in the high-dimensional phase space that are compatible with the low-dimensional plan are restricted to lie on a manifold. In the absence of on what is ailing our national game analytical models of the high-dimensional dynamics, this manifold may be approximated using observed data generated by a randomized exploration of the state space.
Approximations driven by such an imperfect set of observations can lead to spurious trajectories, but this problem is solved by regularizing the approximation using the low-dimensional model. This methodology is developed through a sequence of design problems. Homeworl? First, basic notions regarding control with qualitative models are clarified through the design of a global controller for the inverted pendulum and cart-pole systems. This is followed by the more challenging problem of dynamic bipedal walking on irregular terrain, which is the bowdoin, primary motivating problem for homeworl this dissertation. Bowdoin Essay? Our solution to the dynamic walking problem advances the state of the art by homeworl, simultaneously achieving several important properties. Our algorithm generates trajectories to walk on in essay irregular terrain, with only a qualitative model of the dynamics of the robot, and with energy usage comparable with actuated walkers utilizing passive dynamic principles. Although the definition of tasks in terms of structurally stable orbits and manifolds is very natural when talking about physical systems, this representation yields benefits in more artificial domains as well. This is demonstrated through the example of spatiotemporal control of polygonal shapes, such as in a robot collective. Hanson, Heather. Coordinated Power, Energy, and Temperature Management. The University of Texas at Austin, Department of Computer Sciences.
Report# TR-07-29 (dissertation). June 18, 2007. NO ABSTRACT. Ge, Ruifang. Learning Semantic Parsers Using Statistical Syntactic Parsing Techniques.
The University of Texas at Austin, Department of Computer Sciences. Report# AI06-327 (doctoral dissertation proposal). February 13, 2006. Homeworl? 41 pages. Most recent work on semantic analysis of banking natural language has focused on shallow'' semantics such as word-sense disambiguation and semantic role labeling.
Our work addresses a more ambitious task we call semantic parsing where natural language sentences are mapped to complete formal meaning representations. We present our system Scissor based on a statistical parser that generates a semantically-augmented parse tree (SAPT), in homeworl, which each internal node has both a syntactic and semantic label. A compositional-semantics procedure is then used to map the augmented parse tree into a final meaning representation. On What? Training the system requires sentences annotated with augmented parse trees. We evaluate the system in two domains, a natural-language database interface and an interpreter for coaching instructions in robotic soccer. We present experimental results demonstrating that Scissor produces more accurate semantic representations than several previous approaches on long sentences.
In the future, we intend to pursue several directions in developing more accurate semantic parsing algorithms and homeworl, automating the annotation process. This work will involve exploring alternative tree representations for better generalization in parsing. We also plan to apply discriminative reranking methods to semantic parsing, which allows exploring arbitrary, potentially correlated features not usable by the baseline learner. We also propose to design a method for automating the SAPT-generation process to alleviate the extra annotation work currently required for essay training Scissor. Finally, we will investigate the impact of different statistical syntactic parsers on semantic parsing using the automated SAPT-generation process.
Martin, Jean-Philippe. Byzantine Fault-Tolerance and homeworl, Beyond. The University of Texas at Austin, Department of Computer Sciences. Report# TR-06-66 (ph.d. dissertation). December 6, 2006. 291 pages. Byzantine fault-tolerance techniques are useful because they tolerate arbitrary faults regardless of cause: bugs, hardware glitches, even hackers. These techniques have recently gained popularity after it was shown that they could be made practical. Most of the dissertation builds on Byzantine fault-tolerance (BFT) and extends it with new results for Byzantine fault-tolerance for both quorum systems and phd research proposal marketing, state machine replication.
Our contributions include proving new lower bounds, finding new protocols that meet these bounds, and providing new functionality at lower cost through a new architecture for state machine replication. The second part of the homeworl, dissertation goes beyond Byzantine fault-tolerance. We show that BFT techniques are not sufficient for networks that span multiple administrative domains, propose the marketing, new BAR model to describe these environments, and homeworl, show how to banking build BAR-Tolerant protocols through our example of a BAR-Tolerant terminating reliable broadcast protocol. Bientinesi, Paolo. Mechanical Derivation and Systematic Analysis of Correct Linear Algebra Algorithms.
The University of Texas at Austin, Department of Computer Sciences. Report# TR-06-46 (phd dissertation). September 29, 2006. 149 pages. We consider the problem of developing formally correct dense linear algebra libraries. The problem would be solved convincingly if, starting from the homeworl, mathematical specification of a target operation, it were possible to generate, implement and analyze a family of correct algorithms that compute the essay, operation.
This thesis presents evidence that for a class of dense linear operations, systematic and mechanical development of homeworl algorithms is within reach. It describes and demonstrates an approach for deriving and implementing, systematically and even mechanically, proven correct algorithms. It also introduces a systematic procedure to analyze, in a modular fashion, numerical properties of the generated algorithms. Lopez-Herrejon, Roberto Erick. Writing A Medical Paper? Understanding Feature Modularity. The University of homeworl Texas at discuss Austin, Department of Computer Sciences. Report# TR-06-45 (phd dissertation). Homeworl? September 28, 2006. Banking And Finance Thesis? 145 pages. Features are increments in program functionality.
Feature abstraction, the process of abstracting programs into their constituent features, is a relatively common yet informal practice in homeworl, software design. Essay? It is common because it simplifies program understanding. It is also important for software product lines whose essence is the systematic and efficient creation of software products from a shared set of assets or features, where each product exhibits common functionality with other products but also has unique functionalities. Thus, it seems natural to modularize feature abstractions and homeworl, use such modules as building blocks of programs and phd research marketing, product lines. Unfortunately, conventional modularization approaches such as methods, classes and homeworl, packages are not geared for supporting feature modules. They present two recurrent problems. First, a typical feature implementation is spread over several conventional modules.
Second, features are usually more than source code artifacts as they can modularize many different program representations (makefiles, documentation, performance models). An undesirable consequence is that developers must lower their abstractions from features to those provided by the underlying implementation languages, a process that is banking far from simple let alone amenable to significant automation. The conceptual gap created between feature abstractions and their modularization hinders program understanding and product line development. The root of the problem is the fact that feature modularity is not well understood and thus not well supported in homeworl, conventional programming languages, modularization mechanisms, and design techniques. In this dissertation, we explore language and modularity support for on what our national hockey features founded on an algebraic model geared for program synthesis.
Our model integrates ideas from collaboration-based designs, mixin layers, aspect oriented programming, multi-dimensional separation of concerns, and homeworl, generative programming. We assess our model with an implementation of a non-trivial product line case study, and evaluate feature support in emerging modularization technologies. Kate, Rohit J. A Kernel-based Approach to Learning Semantic Parsers. The University of Texas at Austin, Department of Computer Sciences. Report# AI05-326 (doctoral dissertation proposal). November 22, 2005. 34 pages. Semantic parsing involves deep semantic analysis that m.pdf natural language sentences to bowdoin their formal executable meaning representations. This is a challenging problem and is critical for developing user-friendly natural language interfaces to computing systems. Most of the research in natural language understanding, however, has mainly focused on shallow semantic analysis like case-role analysis or word sense disambiguation.
The existing work in semantic parsing either lack the robustness of statistical methods or are applicable only to simple domains where semantic analysis is homeworl equivalent to filling a single semantic frame. In this proposal, we present a new approach to semantic parsing based on string-kernel-based classification. Our system takes natural language sentences paired with their formal meaning representations as training data. For every production in the formal language grammar, a Support-Vector Machine (SVM) classifier is trained using string similarity as the kernel. Each classifier then gives the probability of the production covering any given natural language string of words. These classifiers are further refined using EM-type iterations based on their performance on the training data. Meaning representations for novel natural language sentences are obtained by finding the research, most probable semantic parse using these classifiers.
Our experiments on two real-world data sets that have deep meaning representations show that this approach compares favorably to homeworl other existing systems in terms of accuracy and coverage. Leadership Mckinsey? For future work, we propose to extend this approach so that it will also exploit the knowledge of natural language syntax by homeworl, using the existing syntactic parsers. We also intend to broaden the scope of application domains, for essay example, domains where the sentences are noisy as typical in speech, or domains where corpora available for training do not have natural language sentences aligned with their unique meaning representations. We aim to test our system on the task of homeworl complex relation extraction as well. Finally, we also plan to investigate ways to combine our semantic parser with some recently developed semantic parsers to form committees in order to get the best overall performance.
Melville, Prem. Creating Diverse Ensemble Classifiers to Reduce Supervision. The University of Texas at Austin, Department of Computer Sciences. Essay? Report# TR-05-49 (dissertation). December 13, 2005. 157 pages. Ensemble methods like Bagging and Boosting which combine the decisions of multiple hypotheses are some of the strongest existing machine learning methods. The diversity of the members of an ensemble is homeworl known to in essay be an important factor in homeworl, determining its generalization error. In this thesis, we present a new method for generating ensembles, DECORATE (Diverse Ensemble Creation by Oppositional Relabeling of Artificial Training Examples), that directly constructs diverse hypotheses using additional artificially-generated training examples. The technique is a simple, general meta-learner that can use any strong learner as a base classifier to build diverse committees. The diverse ensembles produced by DECORATE are very effective for reducing the amount of supervision required for phd research marketing building accurate models.
The first task we demonstrate this on homeworl is classification given a fixed training set. Essay Is Ailing Game Hockey? Experimental results using decision-tree induction as a base learner demonstrate that our approach consistently achieves higher predictive accuracy than the base classifier, Bagging and Random Forests. Also, DECORATE attains higher accuracy than Boosting on small training sets, and achieves comparable performance on larger training sets. Additional experiments demonstrate DECORATE's resilience to imperfections in data, in homeworl, the form of on what is ailing missing features, classification noise, and feature noise. DECORATE ensembles can also be used to reduce supervision through active learning, in which the learner selects the most informative examples from homeworl a pool of unlabeled examples, such that acquiring their labels will increase the accuracy of the classifier. Query by Committee is one effective approach to active learning in research paper, which disagreement within the ensemble of hypotheses is used to select examples for labeling. Homeworl? Query by Bagging and Query by mckinsey, Boosting are two practical implementations of this approach that use Bagging and homeworl, Boosting respectively, to banking thesis build the committees. For efficient active learning it is critical that the committee be made up of consistent hypotheses that are very different from each other.
Since DECORATE explicitly builds such committees, it is well-suited for this task. We introduce a new algorithm, Active-DECORATE, which uses DECORATE committees to select good training examples. Experimental results demonstrate that Active-DECORATE typically requires labeling fewer examples to achieve the same accuracy as Query by Bagging and Query by Boosting. Apart from optimizing classification accuracy, in many applications, producing good class probability estimates is also important, e.g., in fraud detection, which has unequal misclassification costs. This thesis introduces a novel approach to homeworl active learning based on Active-DECORATE which uses Jensen-Shannon divergence (a similarity measure for probability distributions) to improve the selection of training examples for optimizing probability estimation. Comprehensive experimental results demonstrate the benefits of our approach. Unlike the active learning setting, in supplement, many learning problems the class labels for all instances are known, but feature values may be missing and can be acquired at a cost. For building accurate predictive models, acquiring complete information for all instances is often quite expensive, while acquiring information for homeworl a random subset of phd research instances may not be optimal. We formalize the task of active feature-value acquisition, which tries to reduce the cost of homeworl achieving a desired model accuracy by identifying instances for which obtaining complete information is most informative. We present an approach, based on DECORATE, in which instances are selected for acquisition based on the current model's accuracy and on what is ailing our national game, its confidence in the prediction. Experimental results demonstrate that our approach can induce accurate models using substantially fewer feature-value acquisitions than random sampling.
Kim, Min Sik. Buildling and homeworl, Maintaining Overlay Networks for Bandwidth-Demanding Applications. Writing? The University of Texas at Austin, Department of Computer Sciences. Homeworl? Report# TR-05-36 (dissertation). July 11, 2005.
171 pages. The demands of leadership essay mckinsey Internet applications have grown significantly in terms of required resources and types of services. Overlay networks have emerged to homeworl accommodate such applications by implementing more services on top of IP (Internet Protocol). However, while overlay networks are successful in circumventing limitations of IP, the task of building and banking thesis, maintaining an overlay network is still challenging. In an overlay network, participating hosts are virtually fully-connected through the homeworl, underlying Internet. Bowdoin Supplement? However, since the quality of overlay connections varies, the performance of the overlay network is homeworl dependent on which connections are chosen to be utilized. Therefore, maintaining a ``good'' overlay network topology is crucial in achieving high performance. To demonstrate how much performance gain can be achieved through topology changes, a distributed algorithm to build an overlay multicast tree is proposed for streaming media distribution. The algorithm finds an optimal tree such that the average bandwidth of receivers is maximized under an abstract network model. However, increasing bandwidth does not necessarily lead to a better overlay topology; in overlay networks, interference between overlay connections should be taken into account. Since such interference occurs when different overlay connections pass through a congested link simultaneously, detecting congestion shared by multiple overlay connections is necessary to avoid bottlenecks.
For shared congestion detection, a novel technique called DCW (Delay Correlation with Wavelet denoising) is proposed. Previous techniques to detect shared congestion have limitations in applying to overlay networks; they assume a common source or destination node, drop-tail queueing, or a single point of congestion. However, DCW is applicable to any pair of paths on the Internet without such limitations. It employs a signal processing method, wavelet denoising, to bowdoin supplement separate queueing delay caused by network congestion from various other delay variations. The proposed technique is evaluated through both simulations and Internet experiments. They show that for paths with a common synchronization point, DCW provides faster convergence and higher accuracy while using fewer packets than previous techniques. Furthermore, DCW is robust and accurate without a synchronization point; more specifically, it can tolerate a synchronization offset of up to one second between two packet flows. Because DCW is designed to homeworl detect shared congestion between a pair of paths, there is a concern about scalability when it is used in a large-scale overlay network. To cluster N paths, a straightforward approach of using pairwise tests would require O(N^2) time complexity. To address this issue, a scalable approach to cluster Internet paths using multidimensional indexing is presented. By storing per-path data in a multidimensional space indexed using a tree-like structure, the computational complexity of clustering is reducible to O(N log N).
The indexing overhead can be further improved by reducing dimensionality of the space through the wavelet transform. Computation cost is kept low by discuss, using the homeworl, same wavelet transform for both denoising in DCW and dimensionality reduction. The proposed approach is evaluated using simulations and leadership essay mckinsey, found to be effective for large N. The tradeoff between indexing overhead and homeworl, clustering accuracy is shown empirically. As a case study, an algorithm that improves overlay multicast topology is designed. Because overlay multicast forwards data without support from routers, data may be delivered multiple times over the same physical link, causing a bottleneck. This problem is more serious for applications demanding high bandwidth such as multimedia distribution. Although such bottlenecks can be removed by overlay topology changes, a naive approach may create bottlenecks in other parts of the network. The proposed algorithm removes all bottlenecks caused by the redundant data delivery of overlay multicast, detecting such bottlenecks using DCW. Writing? In a case where the source rate is constant and homeworl, the available bandwidth of banking thesis each link is not less than the rate, the algorithm guarantees that every node receives at the full source rate. Simulation results show that even in a network with a dense receiver population, the algorithm finds a tree that satisfies all the receiving nodes while other heuristic-based approaches often fail.
A similar approach to homeworl finding bottlenecks and removing them through topology changes is applicable to other types of overlay networks. This research will enable bandwidth-demanding applications to build more efficient overlay networks to achieve higher throughput. Zhang, Xincheng. Protocol Design for Scalable and Reliable Group Rekeying Divergences. Writing Research? The University of Texas at Austin, Department of homeworl Computer Sciences. Report# TR-05-33 (technical report-dissertation).
June 29, 2005. 183 pages. In secure group communications, group users share a symmetric key, called group key. The group key is used for encrypting data traffic among group users or restricting access to resources intended for group users only. A key server needs to change the group key after users join and leave (called group rekeying), by composing a rekey message that consists of leadership essay mckinsey encrypted new keys (encryptions, in short) and delivering it to all users.
When group size is large, it becomes infeasible to rekey per user join or leave because of its high processing and bandwidth overheads. Instead, the key server changes the homeworl, group key per rekey interval, the length of which indicates how tight the group access control is. It is desired to phd research proposal reduce the overhead of group rekeying as much as possible in order to allow frequent rekeying. To address the scalability issue of the key server, Wong, Gouda, and Lam proposed the homeworl, key tree approach in 1998. Discuss In Essay Writing? The same idea also appears in RFC 2627. Homeworl? The scalability of rekey transport, however, was not addressed. The objective of bowdoin supplement this dissertation is to design a scalable and reliable rekey transport protocol and evaluate its performance. Rekey transport differs from data transport because rekey messages require scalable, reliable, and real-time delivery.
Furthermore, each user needs only a small subset of all of the encryptions in a rekey message. We have proposed a scalable and reliable rekey transport protocol; its efficiency benefits from the special properties of rekey transport. Homeworl? The protocol runs in two st.pdf: a multicast step followed by a unicast recovery step. Essay On What Is Ailing? Proactive forward error correction (FEC) is used in multicast to homeworl reduce delivery latency and limit the number of users who need unicast recovery. The unicast recovery step provides eventual reliability; it also reduces the proposal, worst-case delivery latency as well as user bandwidth overhead. In the protocol design, various technical issues are addressed. First, a key identification scheme is proposed for each user to identify the subset of homeworl new keys that it needs. Discuss Writing? The communication cost of this scheme is only several bytes per packet.
Second, we investigate how to space the sending times of packets to make proactive FEC resilient to burst loss. Lastly, an adaptive FEC scheme is proposed to make the number of users who need unicast recovery controlled around a small target value under dynamic network conditions. This scheme also makes FEC bandwidth overhead and homeworl, rekey interval close to the the feasible minima. Application-layer multicast (ALM) offers new opportunities to do naming and routing. In the our national game, dissertation, we have studied how to use ALM to support concurrent rekey and data transport in secure group communications. Rekey traffic is bursty and requires fast delivery.
It is desired to reduce rekey bandwidth overhead as much as possible since it competes for available bandwidth with data traffic. Towards this goal, we propose a multicast scheme that exploits proximity in the underlying network. We further propose a rekey message splitting scheme to homeworl significantly reduce rekey bandwidth overhead at each user access link and network link. Phd Research Marketing? We formulate and prove correctness properties for the multicast scheme and rekey message splitting scheme. Simulation results show that our approach can reduce rekey bandwidth overhead from homeworl several thousand encryptions to less than ten encryptions for mckinsey more than 90% of users in a group of 1024 users. Liu, Huaiyu. Designing a Resilient Routing Infrastructure for homeworl Peer-to-Peer Networks Protocols. The University of Texas at Austin, Department of Computer Sciences.
Report# TR-05-32 (ph.d. dissertation). June 28, 2005. Phd Research Proposal Marketing? 231 pages. Homeworl? Peer-to-Peer (P2P) networks have enabled a new generation of large scale distributed applications. Unlike the traditional client-server model, in a P2P network, all peers in the network both contribute to and receive services from the proposal, network. Due to their decentralized and self-organizing nature, P2P networks enable tens of homeworl thousands (potentially millions) of Internet machines to form virtual communities and share the essay, vast resources aggregated from the participating machines. In this dissertation, we address a fundamental problem in designing P2P networks: How to construct and maintain a resilient infrastructure to homeworl provide reliable, scalable, and efficient routing service for millions of Internet nodes without central service and administration?
The absence of a medical central administration, the large number of nodes involved, and the high rate of node dynamics pose great challenges to the design of homeworl a resilient routing infrastructure for P2P networks. Our work tackles the above challenges and has successfully addressed the a medical paper, following problems: (1) How to design protocols to maintain ``consistency of homeworl routing tables to essay mckinsey ensure successful routing? (2) How to reason about correctness of these protocols? (3) How to evaluate the system's ability to homeworl sustain high rates of node dynamics and how to improve this ability? In particular, we have designed a suite of protocols that construct and maintain a resilient routing infrastructure. To base the protocol design on leadership essay mckinsey a sound foundation, we have introduced a theoretical foundation, called C-set trees, to guide protocol design and correctness reasoning. Based on the theoretical foundation, we have designed a join protocol and developed rigorous correctness proofs for homeworl the protocol.
We have also designed an efficient failure recovery protocol, which has been demonstrated by extensive simulations to perform perfect recovery even when 50% of on what game hockey network nodes fail. Both the join protocol and the failure recovery protocol have been integrated into a single framework following a module composition approach. Furthermore, we have conducted extensive simulation experiments to homeworl study behaviors of the designed system under different rates of node dynamics (churn experiments). We find our system to be effective, efficient, and provide reliable and discuss writing, scalable routing service for an average node lifetime as low as 8.3 minutes (the median lifetime measured for two deployed P2P networks, N.pdfter and Gnutella, was 60 minutes). Based on our system design, we have implemented a prototype system, named Silk, as the routing component of a shared infrastructure for P2P networks and other large-scale distributed applications.
Stanley, Kenneth Owen. Efficient Evolution of Neural Networks through Complexification. The University of Texas at Austin, Department of Computer Sciences. Homeworl? Report# AI04-314 (dissertation). August 2004.
180 pages. Artificial neural networks can potentially control autonomous robots, vehicles, factories, or game players more robustly than traditional approaches. Neuroevolution, i.e. the artificial evolution of neural networks, is proposal marketing a method for finding the right topology and connection weights to homeworl specify the desired control behavior. The challenge for neuroevolution is phd research that difficult tasks may require complex networks with many connections, all of which must be set to the right values. Even if a network exists that can solve the task, evolution may not be able to find it in such a high-dimensional search space. This dissertation presents the NeuroEvolution of Augmenting Topologies (NEAT) method, which makes search for complex solutions feasible.
In a process called complexification, NEAT begins by searching in a space of simple networks, and gradually makes them more complex as the search progresses. By starting minimally, NEAT is more likely to find efficient and robust solutions than neuroevolution methods that begin with large fixed or randomized topologies; by elaborating on existing solutions, it can gradually construct even highly complex solutions. In this dissertation, NEAT is first shown faster than traditional approaches on a challenging reinforcement learning benchmark task. Second, by building on existing structure, it is shown to homeworl maintain an arms race even in open-ended coevolution. And Finance? Third, NEAT is used to successfully discover complex behavior in three challenging domains: the game of Go, an automobile warning system, and a real-time interactive video game. Experimental results in these domains demonstrate that NEAT makes entirely new applications of machine learning possible. Nahm, Un Yong. Text Mining with Information Extraction. The University of Texas at Austin, Department of Computer Sciences.
Report# AI04-311 (dissertation). October 2004. Homeworl? 132 pages. The popularity of the Web and the large number of documents available in electronic form has motivated the search for hidden knowledge in text collections. Consequently, there is growing research interest in the general topic of text mining. In this paper, we develop a text-mining system by integrating methods from leadership Information Extraction (IE) and Data Mining (Knowledge Discovery from homeworl Databases or KDD).
By utilizing existing IE and KDD techniques, text-mining systems can be developed relatively rapidly and evaluated on existing text corpora for testing IE systems. We present a general text-mining framework called DiscoTEX which employs an IE module for transforming natural-language documents into structured data and a KDD module for discovering prediction rules from the extracted data. When discovering patterns in extracted text, strict matching of strings is inadequate because textual database entries generally exhibit variations due to typographical errors, misspellings, abbreviations, and other sources. We introduce the notion of discovering soft-matching rules from text and present two new learning algorithms. Essay? TextRISE is an inductive method for learning soft-matching prediction rules that integrates rule-based and instance-based learning methods. Simple, interpretable rules are discovered using rule induction, while a nearest-neighbor algorithm provides soft matching. SoftApriori is a text-mining algorithm for discovering association rules from texts that uses a similarity measure to allow flexible matching to variable database items. We present experimental results on homeworl inducing prediction and association rules from writing research paper natural-language texts demonstrating that TextRISE and SoftApriori learn more accurate rules than previous methods for these tasks.
We also present an approach to using rules mined from extracted data to improve the accuracy of homeworl information extraction. Experimental results demonstate that such discovered patterns can be used to effectively improve the underlying IE method. Mayberry III, Marshall R. Discuss? Incremental Nonmonotonic Parsing through Semantic Self-Organization. The University of Texas at Austin, Department of Computer Sciences. Homeworl? Report# AI04-310 (dissertation). May 2003. 148 pages. Subsymbolic systems have been successfully used to game hockey model several aspects of homeworl human language processing. Subsymbolic parsers are appealing because they allow combining syntactic, semantic, and thematic constraints in sentence interpretation and essay, nonmonotonically revising that interpretation while incrementally processing a sentence. Such parsers are also cognitively plausible: processing is robust and multiple interpretations are simultaneously activated when the input is ambiguous.
Yet, it has proven very difficult to scale them up to realistic language. They have limited memory capacity, training takes a long time, and homeworl, it is writing paper difficult to homeworl represent linguistic structure. A new connectionist model, INSOMNet, scales up the subsymbolic approach by utilizing semantic self-organization. INSOMNet was trained on semantic dependency graph representations from the recently-released LinGO Redwoods HPSG Treebank of sentences from the VerbMobil project. The results show that INSOMNet accurately learns to on what our national game represent these semantic dependencies and generalizes to homeworl novel structures. Further evaluation of INSOMNet on the original VerbMobil sentences transcribed with annotations for spoken language demonstrates robust parsing of noisy input, while graceful degradation in performance from in essay adding noise to the network weights underscores INSOMNet's tolerance to damage.
Finally, the cognitive plausibility of the model is shown on a standard psycholinguistic benchmark, in which INSOMNet demonstrates expectations and defaults, coactivation of multiple interpretations, nonmonotonicity, and semantic priming. Li, Xiaozhou. Ranch: A Dynamic Network Topology. The University of Texas at Austin, Department of Computer Sciences. Homeworl? Report# TR-04-36 (dissertation). August 2004. Essay Supplement? 166 pages.
Peer-to-peer computing is an emerging paradigm that has the potential of harnessing enormous amounts of under-utilized computational resources (e.g., home computers). A central problem in homeworl, peer-to-peer computing is how to essay organize the network nodes so that sophisticated applications can be efficiently supported. The cornerstone of a peer-to-peer network is a dynamic network topology that determines the neighbor relationships to be maintained by homeworl, the network nodes. This dissertation is concerned with algorithmic and concurrency issues in dynamic network topologies. We present Ranch (random cyclic hypercube), a simple, recursive topology consisting of a collection of rings. Leadership Mckinsey? Ranch is a scalable topology. In particular, it has logarithmic in-degree, out-degree, and diameter, and it uses only a logarithmic number of messages for a node to join or leave the network. Ranch also has a number of homeworl additional desirable properties, including locality awareness and fault tolerance. We show how to build a name resolution scheme for Ranch that enables the peer-to-peer network to find data items efficiently. Our results include a name replication scheme and phd research marketing, a fault-tolerant lookup algorithm.
We address the problem of topology maintenance in peer-to-peer networks, that is, how to properly update the neighbor variables when nodes join and homeworl, leave the network, possibly concurrently. We design, and prove the correctness of, protocols that maintain the ring topology, the writing research paper, basis of several peer-to-peer networks, in the fault-free environment. Our protocols handle both joins and leaves actively (i.e., they update the homeworl, neighbor variables as soon as a join or a leave occurs). We use an assertional method to prove the correctness of our protocols, that is, we first design a global invariant for marketing a protocol and then show that every action of the protocol preserves the invariant. Our protocols are simple and our proofs are rigorous and explicit. We extend our results on the maintenance of rings to homeworl address the maintenance of Ranch.
We present active and concurrent maintenance protocols that handle both joins and leaves for Ranch, along with their assertional correctness proofs. The protocols for essay on what is ailing game Ranch use the protocols for rings as a building block. The protocols and the correctness proofs for Ranch substantially extend those for rings. We present simulation results that demonstrate the scalability and locality awareness of Ranch. Chaput, Harold Henry. The Constructivist Learning Architecture: A Model of Cognitive Development for homeworl Robust Autonomous Robots. The University of Texas at Austin, Department of Computer Sciences.
Report# TR-04-34 (dissertation). August 2004. 91 pages. Autonomous robots are used more and more in remote and inaccessible places where they cannot be easily repaired if damaged or improperly programmed. A system is and finance needed that allows these robots to repair themselves by homeworl, recovering gracefully from damage and adapting to unforeseen changes. Newborn infants employ such a system to adapt to leadership essay mckinsey a new and dynamic world by building a hierarchical representation of their environment.
This model allows them to homeworl respond robustly to banking thesis changes by falling back to homeworl an earlier stage of knowledge, rather than failing completely. A computational model that replicates these phenomena in infants would afford a mobile robot the same adaptability and robustness that infants have. This dissertation presents such a model, the essay, Constructivist Learning Architecture (CLA), that builds a hierarchical knowledge base using a set of interconnected self-organizing learning modules. The dissertation then demonstrates that CLA (1) replicates current studies in infant cognitive development, (2) builds sensorimotor schemas for robot control, (3) learns a goal-directed task from delayed rewards, and (4) can fall back and recover gracefully from damage. Homeworl? CLA is a new approach to robot control that allows robots to recover from damage or adapt to unforeseen changes in the environment. CLA is also a new approach to bowdoin essay supplement cognitive modeling that can be used to better understand how people learn for their environment in infancy and adulthood. Xie, Fei. Homeworl? Integration of Model Checking into Software Development Processes. The University of Texas at Austin, Department of Computer Sciences. Report# TR-04-29 (dissertation). August 2004.
163 pages. Testing has been the dominant method for validation of software systems. As software systems become complex, conventional testing methods have become inadequate. Essay? Model checking is a powerful formal verification method. Homeworl? It supports systematic exploration of all states or execution paths of the system being verified. There are two major challenges in essay supplement, practical and scalable application of model checking to software systems: (1) the applicability of model checking to software systems and (2) the intrinsic complexity of model checking. In this dissertation, we have developed a comprehensive approach to integration of model checking into two emerging software development processes: Model-Driven Development (MDD) and Component-Based Development (CBD), and a combination of MDD and CBD. This approach addresses the two major challenges under the following framework: (1) bridging applicability gaps through automatic translation of software representations to directly model-checkable formal representations, (2) seamless integration of state space reduction algorithms in the translation through static analysis, and (3) scaling model checking capability and achieving state space reduction by systematically exploring compositional structures of software systems. We have integrated model checking into MDD by applying mature model checking techniques to industrial design-level software representations through automatic translation of these representations to the input formal representations of model checkers. Homeworl? We have developed a translation-based approach to compositional reasoning of leadership essay mckinsey software systems, which simplifies the proof, implementation, and application of compositional reasoning rules at the software system level by reusing the proof and implementation of existing compositional reasoning rules for directly model-checkable formal representations. We have developed an integrated state space reduction framework which systematically conducts a top-down decomposition of a large and complex software system into directly model-checkable components by homeworl, exploring domain-specific knowledge.
We have designed, implemented, and applied a bottom-up approach to model checking of component-based software systems, which composes verified systems from essay on what hockey verified components and homeworl, integrates model checking into CBD. We have further scaled model checking of essay on what is ailing our national hockey component-based systems by exploring the synergy between MDD and CBD, i.e., specifying components in homeworl, executable design languages, and realizing the bottom-up approach based on model checking of software designs through translation. McGuire, Tommy. Correct Implementation of Network Protocols. The University of Texas at Austin, Department of Computer Sciences. Report# TR-04-12 (dissertation). April 2004.. 190 pages. A number of issues combine to make network protocol development significantly more difficult than other areas of computer programming: problems with time, concurrency, and failures; interactions between the network protocol and its environment; and obstacles in developing the protocol over time.
In order to address these issues, we introduce the Timed Abstract Protocol notation and the Austin Protocol Compiler. The Timed Abstract Protocol, or TAP, notation is a domain-specific formal language for writing describing asynchronous message-passing network protocols, with two execution models: an homeworl, abstract execution model and a concrete execution model. The abstract execution model is suited for protocol design, comprehension, and correctness verification. The concrete execution model is suited for protocol implementation. We show that the two models are equivalent: that a protocol interpreted under the concrete model preserves the intended behavior of the protocol interpreted under the banking and finance thesis, abstract model. The Austin Protocol Compiler, or APC, is a system that transforms a protocol given in the Timed Abstract Protocol notation into executable C code and provides a runtime environment for the protocol. In order to homeworl demonstrate the our national hockey, effectiveness of the TAP notation and APC, we present implementations of homeworl a secure encryption key exchange protocol, a failure discovery protocol, and a Domain Name System server. While discussing the latter, we examine the performance of the APC implementation and show that it is comparable to two other DNS servers. Leadership Essay? The combination of the Timed Abstract Protocol notation and the Austin Protocol Compiler addresses the issues of network protocol development by allowing precise and homeworl, verifiable descriptions of protocols which can be made executable easily, in order both to gain experimental experience and to banking and finance thesis provide reference implementations.
Gomez, Faustino J. Robust Non-Linear Control through Neuroevolution. The University of Texas at Austin, Department of Computer Sciences. Report# AI03-303 (dissertation). Homeworl? August 2003. Essay Is Ailing Our National Hockey? 150 KEY WORDS: Neural Networks, Genetic Algorithms, Non-Linear Control, Shaping pages. Many complex control problems require sophisticated solutions that are not amenable to traditional controller design. Homeworl? Not only is it difficult to model real world systems, but often it is unclear what kind of behavior is required to solve the task. Reinforcement learning approaches have made progress in such problems, but have so far not scaled well. Neuroevolution, has improved upon conventional reinforcement learning, but has still not been successful in full-scale, non-linear control problems. This dissertation develops a methodology for solving real world control tasks consisting of bowdoin essay three components: (1) an efficient neuroevolution algorithm that solves difficult non-linear control tasks by homeworl, coevolving neurons, (2) an incremental evolution method to scale the algorithm to the most challenging tasks, and (3) a technique for making controllers robust so that they can transfer from simulation to writing a medical research paper the real world.
The method is faster than other approaches on a set of difficult learning benchmarks, and is used in two full-scale control tasks demonstrating its applicability to real world problems. Page, David Scott. Effective Data Access in Software IO Frameworks. Homeworl? The University of Texas at Austin, Department of Computer Sciences. Report# TR-03-56 (dissertation).
Fall 2003. Phd Research Marketing? 145 pages. Homeworl? NO ABSTRACT. Howell, Jo Ann Shaw. On the Reduction of a Matrix to Frobenius Form Using Residue Arithmetic. The University of Texas at Austin, Department of banking and finance Computer Sciences. Report# TR-03-45 (dissertation). August 1971. 129 pages. This thesis is homeworl concerned with the essay on what our national game hockey, reduction of an integral matrix to Frobenius form exactly using residue arithmetic.
Thus, exact integral factors of the characteristic polynomial are obtained. The algorithm is based on homeworl a modification of the marketing, Danilewski method. This algorithm can be performed using either single-modulus or multiple-modulus residue arithmetic, and examples are given for both cases. Included in this thesis is a description of the Danilewski method. The theory of residue arithmetic for homeworl integers, matrices, and polynomials is surveyed in order to provide an adequate background for describing the modified Danilewski method.
The selection of the moduli is our national hockey discussed, and numerical results from a computer program are given. DOWNLOAD tr03-45a.pdf tr03-45b.pdf tr03-45c.pdf. Pettie, Seth. On the Shortest Path and Minimum Spanning Tree Problems. The University of Texas at homeworl Austin, Department of Computer Sciences. Report# TR-03-35 (dissertation). August 2003.
204 pages. The shortest path and minimum spanning tree problems are two of the a medical research paper, classic textbook problems in combinatorial optimization. They are simple to describe and admit simple polynomial-time algorithms. However, despite years of concerted research effort, the asymptotic complexity of these problems remains unresolved. The main contributions of this dissertation are a number of asymptotically faster algorithms for the minimum spanning tree and shortest path problems. Of equal interest, we provide some clues as to homeworl why these problems are so difficult. In particular, we show why certain modern approaches to the problems are doomed to have super-linear complexity.
A sampling of our results are listed below. We emphasize that all of our algorithms work with general graphs, and make no restrictive assumptions on the numerical representation of edge-lengths. (1) A provably optimal deterministic minimum spanning tree algorithm. (We give a constructive proof that the algorithmic complexity of the writing a medical research paper, minimum spanning tree problem is equivalent to its decision-tree complexity.) ? (2) An all-pairs shortest path algorithm for general graphs running in homeworl, time O(mn + n 2 log log n) , where m and bowdoin essay, n are the homeworl, number of essay on what game edges and vertices. This provides the first improvement over homeworl approaches based on Dijkstra's algorithm. ? (3) An all-pairs shortest path algorithm for bowdoin supplement undirected graphs running in O(mn log alpha) time, where alpha = alpha(m,n) is the inverse-Ackermann function. ? (4) A single-source shortest path algorithm running in O(m alpha + min [ n log log r,? n log n ] ) time, where r bounds the ratio of any two edge lengths. For r polynomial in n this is O(m + n log log n) , an homeworl, improvement over phd research proposal marketing Dijkstra's algorithm. ? (5) An inverse-Ackermann style lower bound for the online minimum spanning tree verification problem. This is the first inverse-Ackermann type lower bound for a comparison-based problem. ? (6) An Omega (m + n log n) lower bound on any hierarchy-type single-source shortest path algorithm, implying that this type of algorithm cannot improve upon Dijkstra's algorithm. (All of our shortest path algorithms are of the hierarchy type.) ? (7) The first parallel minimum spanning tree algorithm that is optimal w.r.t. to both time and work.
Our algorithm is for the EREW PRAM model. ? (8) A parallel, expected linear-work minimum spanning tree algorithm using only a polylogarithmic number of random bits. ? (9) An O(mn log alpha) bound on the comparison-addition complexity of all-pairs shortest paths. This is within a tiny ? log alpha factor of optimal when m = O(n) . Gorinsky, Sergey. Robust Congestion Control for IP Multicast. The University of Texas at Austin, Department of Computer Sciences. Report# TR-03-33 (dissertation). Homeworl? August 2003. 124 pages. Bowdoin Essay Supplement? IP multicast is a network service for scalable distribution of data to multiple receivers. Traditional protocols for multicast congestion control rely on trust: each party is assumed to follow guidelines for fair bandwidth sharing.
However, with the homeworl, growth and commercialization of the Internet, the assumption of universal trust is no longer tenable. In this dissertation, we consider a relaxed model where receivers are untrustworthy and can misbehave to acquire an unfairly high bandwidth at the expense of competing traffic. Our experiments with existing multicast protocols show that each of the evaluated protocols is vulnerable to receiver misbehavior. Phd Research? To take the first step towards robust multicast designs for distrusted environments, we focus on the class of feedback-free protocols where receivers provide no feedback to the sender and control congestion by regulating their subscription levels in the multi-group session. Unfortunately, the mechanism of group subscription offers a misbehaving receiver an opportunity to inflate its subscription level. Such inflated subscription attacks pose a major threat to fairness of bandwidth allocation. This dissertation is the first to solve the problem of inflated subscription. The presented designs rely on an insight that the ability of a receiver to access a multicast group should be tied with the congestion status of the homeworl, receiver. First, we address individual attacks where a receiver inflates its subscription with no assistance from other receivers.
Our solution guards access to multicast groups with dynamic keys and consists of two independent components: DELTA (Distribution of ELigibility To Access) - a novel method for in-band distribution of group keys to receivers that are eligible to access the groups according to the congestion control protocol, and a medical research, SIGMA (Secure Internet Group Management Architecture) - a generic architecture for key-based group access at edge routers. DELTA and SIGMA require only minimal generic changes in the edge routers, do not alter the homeworl, core of the network, and introduce no auxiliary servers. Then, we extend the design to protect multicast congestion control against inflated subscription of colluding receivers. To illustrate that integration with DELTA and SIGMA makes multicast protocols robust to essay hockey inflated subscription and preserves other congestion control properties, we derive and homeworl, evaluate robust adaptations of RLM and FLID-DL protocols. McQuesten, Paul H. Cultural Enhancement of Neuroevolution. The University of Texas at Austin, Department of Computer Sciences. Report# AI02-295 (dissertation). August 2002. 109 KEY WORDS: Culture, Neuroevolution, Learning and evolution, Neural network, Genetic algorithm, Machine learning, Cultural transmission pages. Any transmission of behavior from one generation to the next via nongenetic means is a process of culture.
Culture provides major advantages for survival in the biological world. This dissertation develops four methods that harness the mechanisms of culture to enhance the power of neuroevolution: culling overlarge litters, mate selection by complementary competence, phenotypic diversity maintenance, and teaching offspring to respond like an essay on what our national, elder. The methods are efficient because they operate without requiring additional fitness evaluations, and because each method addresses a different aspect of neuroevolution, they also combine smoothly. The combined system balances diversity and selection pressure, and improves performance both in terms of learning speed and solution quality in homeworl, sequential decision tasks. Bednar, James. Discuss? LEARNING TO SEE: GENETIC AND ENVIRONMENTAL INFLUENCES ON VISUAL DEVELOPMENT.
The University of Texas at Austin, Department of Computer Sciences. Report# AI02-294 (dissertation). May 2002. 138 pages. How can a computing system as complex as the human visual system be specified and constructed?
Recent discoveries of widespread spontaneous neural activity suggest a simple yet powerful explanation: genetic information may be expressed as internally generated training patterns for a general-purpose learning system. Homeworl? The thesis presents an implementation of this idea as a detailed, large-scale computational model of banking thesis visual system development. Simulations show how newborn orientation processing and face detection can be specified in terms of training patterns, and how postnatal learning can extend these capabilities. Homeworl? The results explain experimental data from laboratory animals, human newborns, and banking, older infants, and provide concrete predictions about homeworl infant behavior and neural activity for future experiments. They also suggest that combining a pattern generator with a learning algorithm is an efficient way to develop a complex adaptive system. Kolbly, Donovan. : Extensible Language Implementation. The University of Texas at game hockey Austin, Department of Computer Sciences. Homeworl? Report# TR-02-71 (dissertation). December 2002. And Finance? 177 pages. This work presents several new approaches to homeworl the construction of extensible languages, and is the first system to combine local, dynamically extensible context-free syntax with the expressive power of meta-level procedures.
The unifying theme of proposal our system is that meaning should be computed relative to local context. We show how this theme is manifest in an implementation of a Scheme macro system which achieves hygienic macro expansion without rewriting. Additionally, our Scheme macro system makes available compile-time meta-objects for additional power in writing macros; macros that pattern match on compile-time types for optimization at macro-processing time are one example. This approach is homeworl currently in use in our RScheme implementation of Scheme. We also show the how this approach is applied to languages with conventional syntax, using Java as an phd research, example. We present a dynamically extensible parser based on the Earley parsing algorithm. Homeworl? This approach is practical as well as flexible; a straightforward implementation in leadership, C parses a 600-line (2777 token) file in about 44ms on an 866MHz Pentium III.
We also describe a language extension framework that makes possible an extensible variant of Java, in which new syntax can be supplied by the casual programmer with only limited knowledge of the underlying compiler implementation or approach. This finally makes available to Java programmers the homeworl, easy access to structured macro facilities that Lisp programmers find so powerful. Research? Finally, we demonstrate this framework by constructing a deterministic finite automaton language extension to Java. Mittal, Neeraj. : Techniques for Analyzing Distributed Computations. The University of Texas at Austin, Department of homeworl Computer Sciences. Report# TR-02-70 (dissertation). Bowdoin Essay? May 2002.
182 pages. Inherent non-determinism in distributed programs and homeworl, presence of multiple threads of control makes it difficult to write correct distributed software. Not surprisingly, distributed systems are particularly vulnerable to software faults. A Medical Paper? To build a distributed system capable of tolerating software faults, two important problems need to be addressed: fault detection and fault recovery . The fault detection problem requires finding a (consistent) global state of the computation that satisfies certain predicate ( e.g. , violation of mutual exclusion). Homeworl? To prevent a fault from causing any serious damage such as corrupting stable storage, it is essential that it be detected in a timely manner. However, we prove that detecting a predicate in 2-CNF, even when no two clauses contain variables from the same process, is an NP-complete problem. We develop a technique, based on supplement computation slicing , to reduce the size of the computation and thus the homeworl, number of global states to be examined for detecting a predicate. Slicing can be used to throw away the extraneous global states of the computation in an efficient manner, and focus on only those that are currently relevant for our purpose. And Finance? To detect a fault, therefore, rather than searching the state-space of the computation, it is much more efficient to search the state-space of the slice. We identify several useful classes of predicates for which the slice can be computed efficiently.
Our experimental results indicate that slicing can lead to homeworl an exponential reduction over existing techniques both in terms of time as well as space for fault detection. To recover from faults, we consider rollback recovery approach, which involves restoring the bowdoin essay supplement, system to homeworl a previous state and then re-executing. Essay Mckinsey? We focus on rollback recovery using controlled re-execution , which is useful and effective for tolerating synchronization faults . Unlike other approaches which depend on chance and do not ensure that the homeworl, re-execution is fault-free, the controlled re-execution method avoids synchronization faults during re-execution in a deterministic fashion. Specifically, it selectively adds synchronization dependencies during re-execution to ensure that the previously detected synchronization faults do not occur again. We provide efficient algorithms to in essay writing solve the homeworl, problem for two important classes of synchronization faults. Erdem, Esra. Theory of Applications of Answer Set Programming. The University of Texas at Austin, Department of Computer Sciences. Report# TR-02-69 (dissertation). August 2002.
233 pages. Answer set programming (ASP) is banking a new form of declarative logic programming. ASP interprets a logic program as a constraint on sets of literals, just as a propositional formula can be viewed as a constraint on assignments of truth values to homeworl atoms. The concept of an answer set was originally proposed as a semantics of negation as failure in Prolog. Instead of writing research paper traditional Prolog systems, ASP uses answer set solvers. The input of homeworl Prolog consists of writing a medical paper a logic program and a query, and Prolog computes answer substitutions; the input of an homeworl, answer set solver is a logic program, and the solver computes the program's answer sets. The idea of ASP is to discuss represent a given computational problem as a logic program whose answer sets correspond to homeworl solutions, and to use an answer set solver to find an answer set. We have investigated the application of ASP to several combinatorial search problems, including planning, wire routing, and leadership essay, phylogeny reconstruction. Homeworl? Planning is the problem of finding a sequence of actions that leads to discuss in essay a given goal.
Wire routing is the homeworl, problem of game determining the physical locations of all wires interconnecting the circuit components on a chip. Phylogeny reconstruction is the problem of constructing and homeworl, labeling an evolutionary tree for a set of taxa (taxonomic units), which describes the evolution of the taxa in that set from their most recent common ancestor. In our work on research paper phylogeny reconstruction, we have generated several conjectures about the evolutionary history of Indo-European languages. The work on the use of ASP for homeworl planning has led us to the investigation of some theoretical questions related to answer sets. One is the problem of equivalent transformations of logic programs: under what conditions can we replace a program by an equivalent program that can be processed by an answer set solver more efficiently? Another problem is related to completion--a process that can translate a logic program into a set of formulas of classical logic. Essay? In some cases, the interpretations satisfying the homeworl, completion of a program are also the answer sets for that program. In such cases, we can use propositional solvers--systems that compute a model of a given set of clauses--to find the program's answer sets.
For some problems, propositional solvers are more efficient than answer set solvers. Therefore, we have investigated under what conditions we can use propositional solvers to find the program's answer sets. Mettu, Ramgopal R. Approximation Algorithms for NP-Hard Clustering Problems. The University of phd research proposal Texas at Austin, Department of Computer Sciences. Report# TR-02-62 (dissertation). August 2002. 114 pages. Given a set of n points and their pairwise distances, the goal of clustering is to partition the points into a small number of related sets. Clustering algorithms are used widely to manage, classify, and summarize many kinds of data. In this dissertation, we study the classic facility location and k-median problems in the context of homeworl clustering, and formulate and discuss writing, study a new optimization problem that we call the homeworl, online median problem. For each of these problems, it is known to be NP-hard to compute a solution with cost less than a certain constant factor times the leadership essay, optimal cost.
We give simple constant-factor approximation algorithms for homeworl the facility location, k-median, and online median problems with optimal or near-optimal time bounds. We also study distance functions that are approximately metric, and writing a medical, show that such distance functions allow us to obtain a faster online median algorithm and to generalize our analysis to homeworl other objective functions, such as that of the well-known k-means heuristic. Mckinsey? Given n points, the homeworl, associated interpoint distances and nonnegative point weights, and a nonnegative penalty for each point, the facility location problem asks us to leadership identify a set of homeworl cluster centers so that the weighted average cluster radii and the sum of the cluster center penalties are both minimized. The k-median problem asks us to identify exactly k cluster centers while minimizing just the weighted average cluster radii. We give a simple greedy algorithm for a medical research paper the facility location problem that runs in O(n^2) time and produces a solution with cost at most 3 times optimal. For the homeworl, k-median problem, we develop and in essay, make use of a sampling technique that we call successive sampling, and give a randomized constant-factor approximation algorithm that runs in O(n(k+log +log^2 )) time. We also give an Omega(nk) lower bound on the running time of any randomized constant-factor approximation algorithm for the k-median problem that succeeds with even a negligible constant probability. In many settings, it is desirable to browse a given data set at homeworl differing levels of granularity (i.e., number of clusters). To address this concern, we formulate a generalization of the bowdoin essay, k-median problem that we call the online median problem.
The online median problem asks us to compute an homeworl, ordering of the points so that, over all i, when a prefix of length i is taken as a set of cluster centers, the writing, weighted average radii of the induced clusters is minimized. We show that a natural generalization of the greedy strategy that we call hierarchically greedy yields an algorithm that produces an ordering such that every prefix of the ordering is within a constant factor of the associated optimal cost. Furthermore, our algorithm has a running time of homeworl Theta(n^2). Finally, we study the performance of our algorithms in practice. Essay Mckinsey? We present implementations of our k-median and online median algorithms; our experimental results indicate that our approximation algorithms may be useful in practice. Berger, Emery D. Memory Management for High-Performance Applications. The University of Texas at Austin, Department of Computer Sciences. Report# TR-02-52 (dissertation). August 2002. Homeworl? 113 pages. Memory managers are a source of performance and robustness problems for application software.
Current general-purpose memory managers do not scale on multiprocessors, cause false sharing of heap objects, and systematically leak memory. Even on uniprocessors, the memory manager is often a performance bottleneck. Essay On What Our National? General-purpose memory managers also do not provide the bulk deletion semantics required by many applications, including web servers and compilers. Homeworl? The approaches taken to date to address these and other memory management problems have been largely ad hoc. Programmers often attempt to work around these problems by writing custom memory managers. This approach leads to further difficulties, including data corruption caused when programmers inadvertently free custom-allocated objects to phd research proposal marketing the general-purpose memory manager. Homeworl? In this thesis, we develop a framework for analyzing and designing high-quality memory managers. We develop a memory management infrastructure called heap layers that allows programmers to compose efficient memory managers from reusable and independently testable components. We conduct the first comprehensive examination of custom memory managers and show that most of these achieve slight or no performance improvements over a state-of-the-art general-purpose memory manager. Mckinsey? Building on the knowledge gained in homeworl, this study, we develop a hybrid memory management abstraction called reaps that combines the best of both approaches, allowing server applications to bowdoin supplement manage memory quickly and homeworl, flexibly while avoiding memory leaks. Essay Game Hockey? We identify a number of previously unnoticed problems with concurrent memory management and analyze previous work in homeworl, the light of these discoveries.
We then present a concurrent memory manager called Hoard and prove that it avoids these problems. Sahni, Jasleen Kaur. Scalable Network Architectures for Providing Per-flow Service Guarantees. The University of Texas at Austin, Department of writing a medical Computer Sciences. Report# TR-02-43 (dissertation). August 2002. 153 pages. NO ABSTRACT. Samoladas, Vasilis.
On Indexing Large Databases for homeworl Advanced Data Models. Supplement? The University of Texas at Austin, Department of Computer Sciences. Homeworl? Report# TR-01-58 (dissertation). August 2001. 191 pages. In the last decade, the relational data model has been extended in nu- merous ways, including geographic information systems, abstract data types and object models, constraint and temporal databases, and on-line analytical processing. Phd Research Marketing? We study the indexing requirements of homeworl these data models. In many cases, these requirements are ful lled by ecient techniques for multidimen- sional range search. Phd Research Proposal Marketing? Previous techniques for multidimensional range search, such as the R-tree and its variants, are based on ad hoc assumptions on the na- ture of the workloads they index, and have been known to su er from reduced scalability and robustness.
We adopt an alternative approach; our study fo- cuses on techniques that provide worst-case performance guarantees, and thus overcome these deficiencies. Marshall, Dana T. The Exploitation of Image Construction Data and Temporal/Image Coherence in Ray Traced Animation. The University of Texas at Austin, Department of Computer Sciences. Report# TR-01-54 (dissertation). May 2001. 120 pages. This dissertation proposed an elegant and fast method that speeds the calculation of ray traced animated scenes constructed of convex objects by a combination of temporal and image coherence. Amla, Nina. Efficient Model Checking for Timing Diagrams. The University of homeworl Texas at Austin, Department of Computer Sciences.
Report# TR-01-53 (dissertation). May 2001. 144 pages. NO ABSTRACT. Camahort, Emilio. 4D Light-Field Modeling and Rendering. The University of Texas at Austin, Department of Computer Sciences. Report# TR-01-52 (dissertation). Spring 2001. 186 pages.
Image-based models have recently become an alternative to geometry-based models for essay computer graphics. They can be formalized as specializations of a more general model, the homeworl, light field. The light field represents everything visible from any point in discuss in essay, 3D space. In computer graphics the light field is modeled as a function that varies over the 4D space of oriented lines. Early models parameterize an oriented line by homeworl, its intersection with two parallel planes, a parameterization that was inspired by holography. In computer graphics it introduces unnecessary biases that produce a rendering artifact called the disparity problem. Leadership Essay? We propose an alternative isotropic parameterization, the direction-and-point parameterization (DPP). Homeworl? We compare it to research paper other parameterizations and homeworl, determine whether they are view-independent, that is, invariant under rotations, translations and perspective projections.
We show that no parameterization is view-independent, and that only the bowdoin, DPP introduces a single bias. We correct for this bias using a multiresolution image representation. We implement a DPP modeling and rendering system that supports depth correction, interpolation, hierarchical multiresolution, level-of-detail interpolation, compression, progressivity, and adaptive frame-rate control. We show that its rendering quality is largely independent of the camera parameters. We study the quality of discrete light-field models using three geometric measures.
Two quantify discretization errors in the positional and directional parameters of light field. The third measure quantifies pixelation artifacts. We solve three open problems: (i) how to optimally choose planes for two-plane and DPP models, (ii) where to position the discretization windows within those planes, and (iii) how to choose optimal window resolutions. For a given amount of storage, we show that DPP models give the best overall quality representation for 4D light-field modeling and rendering. We demonstrate the application of 4D light-field models to holography. We generate a holographic stereogram based on both planar and isotropic representations. We show that planar models require nearly twice the resources due oversampling for glancing directions. Homeworl? Our DPP-based approach, never used before in holography, uses half the resources without affecting the quality of the result. Gunnels, John Andrew. A Systematic Approach to the Design and Analysis of Linear Algebra Algorithms.
The University of Texas at Austin, Department of Computer Sciences. Report# TR-01-44 (dissertation). December 2001. 131 pages. Over the last two decades, much progress has been made in the area of the high-performance sequential and parallel implementation of dense linear algebra operations. At what time can we confidently state that we truly understand this problem area and what form might evidence in support of this assertion take? It is our thesis that if we focus this question on the software architecture of libraries for dense linear algebra operations, we can claim to have reached the writing a medical research, point where, for a restricted class of homeworl problems, we understand this area. In this dissertation, we provide evidence in support of this assertion by bowdoin essay, outlining a systematic and partially automated approach to the derivation and high-performance implementation of homeworl a large class of dense linear algebra operations. We have arrived at a conclusion that the answer is to apply formal derivation techniques from Computing Science to the development of high-performance linear algebra libraries. The resulting approach has resulted in an aesthetically pleasing, coherent code that facilitates performance analysis, intelligent modularity, and the enforcement of program correctness via assertions. In this dissertation, we illustrate this observation by looking at the development of the Formal Linear Algebra Methods Environment (FLAME) for implementing linear algebra algorithms.
We believe that traditional methods of implementation do not reflect the natural manner in which an algorithm is either classified or derived. Leadership Essay Mckinsey? To remedy this discrepancy, we propose the use of a small set of abstractions that can be used to design and implement linear algebra algorithms in a simple and straightforward manner. These abstractions may be expressed in a script language that can be compiled into homeworl efficient executable code. We extend this approach to parallel implementations without adding substantial complexity. It should also be possible to translate these scripts into analytical equations that reflect their performance profiles. Phd Research Proposal Marketing? These profiles may allow software designers to systematically optimize their algorithms for homeworl a given machine or to meet a particular resource goal.
Given the more systematic approach to deriving and implementing algorithms that is facilitated by better abstraction and classification techniques, this sort of analysis can be shown to be systematically derivable and automated. Warshaw, Lane Bradley. Facilitating Hard Active Database Applications. The University of Texas at Austin, Department of Computer Sciences. Report# TR-01-14 (dissertation). Banking? May 2001. 161 pages. Active database technology enhances traditional databases with rules that are executed in response to database events. Tills enhancement promises exceptional returns.
Useful applications of the technology include view maintenance, workflow, and real-time decision control systems. Unfortunately, penetration of homeworl active databases has largely been restricted to simple rule systems. Discuss Writing? This narrowed focus can be attributed to all explicit connection of the active rules to the underlying concurrency control system. Although tills explicit Connection provides a level of flexibility, it becomes semantically intractable in more complex applications. Furthermore, rule execution is computationally intensive. Since rules spawn the execution of homeworl many queries over and finance thesis the contents of the database. Homeworl? substantial skill is required to develop complex applications without introducing long duration transactions.
This dissertation addresses three issues surrounding application development that inhibits the feasibility of bowdoin essay active databases. First, a quantitative evaluation is performed on the semantics of VenusDB, a modular active database Ianguage that executes within the nested transaction model. This evaluation provides evidence that rule modules improve system trial maintainability. Homeworl? Second, the discuss in essay, most general contribution of this dissertation is the identification and study of homeworl Log Monitoring Applications (LMAs). LMAs are expert system applications that analyze logs maintained in a database. This dissertation develops the discuss, formal execution semantics and correctness proofs of homeworl concurrency schemes for applications within the writing paper, LMA class. The results show that only a minimal number of coupling modes are necessary for the database integration of homeworl hard rule systems obeying the LMA restrictions.
Third, the architecture and evaluation of an active database optimizer is presented. This optimizer uses database statistics to phd research proposal optimize rules as well as suggest physical schema optimizations. The optimizer is integrated within VenueDB to improve system scalability. Pierce, Evelyn Tumlin. Self-Adjusting Quorum Systems For Byzantine Fault Tolerance. Homeworl? The University of Texas at Austin, Department of Computer Sciences. Report# TR-01-07 (dissertation).
March 2001. 76 pages. Research? The purpose of this work has been to design protocols for a data service that tolerates Byzantine server faults by shifting between multiple tolerance modes at homeworl run time, monitoring itself for faulty server behavior and dynamically adjusting its own tolerance capabilities accordingly. Our goal is discuss a system that runs in an efficient low-fault mode most of the time, but can adjust itself to cope with new faults as they occur. Homeworl? Our approach is based on the masking quorum systems of a medical research paper Malkhi and Reiter. Like the protocols originally proposed for these systems, our techniques are relatively economical in that updates and reads need to homeworl be performed only at a subset (quorum) of data servers, thus decreasing the workload on individual servers and simplifying the recovery process when failures occur. However, our protocols implement the and finance, following additional capabilities: 1. Strengthened read and write protocols for serializability of completed operations.
2. Protocols for dynamically adjusting the threshold (and thus quorum size) of threshold masking quorum systems in response to homeworl information about the number and/or probability of faults in the system. 3. Protocols for detecting Byzantine server behavior in threshold masking quorum systems. As a subsidiary goal, we have sought to make our methods not only effective against random faulty server behavior, but also resistant to sabotage by a deliberate adversary. To this end, we have limited our use of standard assumptions, such as independence of failures and a priori limits on the number of faults, that restrict the applicability of many Byzantine fault tolerance techniques to questions of security. Tarafdar, Ashis. Software Fault Tolerance in Distributed Systems Using Controlled Re-Execution.
The University of discuss writing Texas at Austin, Department of Computer Sciences. Report# TR-00-38 (dissertation). August 2000. 145 pages. Distributed applications are particularly vulnerable to synchronization faults. An important approach to tolerating synchronization faults is rollback recovery, which involves restoring a previous state and re-executing.
Existing rollback recovery methods depend on chance and cannot guarantee that synchronization faults do not recur during re-execution. We propose a new rollback recovery method, controlled re-execution, based on selectively adding synchronizations during re-execution to ensure that synchronization faults do not recur. Homeworl? The controlled re-execution method gives rise to three interesting questions: How do we determine the synchronizations that ensure a safe re-execution? How do we monitor an application to detect faulty global conditions? How well does controlled re-execution perform in practice? The first part of the dissertation addresses the predicate control problem which takes a computation and a global property and adds synchronizations to the computation to writing research paper maintain the property. We design efficient algorithms to solve the problem for many useful predicates, including disjunctive predicates and various types of mutual exclusion predicates. These predicates correspond to commonly encountered synchronization faults such as races.
The second part of the dissertation investigates the predicate detection problem which involves determining whether a global property occurs in a computation. We address the problem for the useful class of conjunctive predicates and in the context of an extended model of computation that allows improved predicate detection over the conventional model. We show that, in general, the problem is NP-Complete. However, an efficient solution is homeworl demonstrated for the useful cases of receive-ordered and send-ordered computations. Further, this solution can be used to achieve an improved, though exponential, solution for the general problem. Proposal Marketing? The third part of the dissertation involves an experimental study of the controlled re-execution method. We evaluate the controlled re-execution method in homeworl, tolerating race faults and find that the and finance thesis, extra tracing costs imposed are within tolerable limits and that it greatly enhanced the likelihood of homeworl recovery. Essay Our National Game Hockey? We conclude that controlled re-execution is an effective and desirable method for tolerating races in long-running non-interactive distributed applications. Hewett, Micheal. Computational Perceptual Attention. The University of Texas at Austin, Department of homeworl Computer Sciences.
Report# TR-00-37 (dissertation). May 10, 2002. 80 pages. This dissertation describes CPA, a general-purpose mechanism for essay is ailing our national game expressing and implementing attention policies that control the allocation of resources among sensory processing tasks in a robot or other advanced intelligent system. A wide variety of attention policies can be expressed in this mechanism, which also supports soft real-time constraints on perceptual processing. Intelligent systems can become inundated with data, resulting in perceptual overload and a consequent inability to formulate a timely or appropriate response. Perceptual overload is often modulated by a perceptual attention mechanism that filters and prioritizes incoming data. Most existing attention mechanisms are tailored to the specific task the system is performing. A general-purpose attention mechanism must have a task-independent interface for controlling attention; support a heterogeneous set of sensors; support heterogeneous methods for homeworl processing sensor data; and support real-time throughput constraints.
The CPA is a general-purpose attention mechanism that supports multimodal perceptual attention. Proposal? Using it, an intelligent system can enact and control a variety of attention policies for any type or combination of sensor or sensor data. An intelligent system dynamically creates multiple heterogeneous perception tasks in accord with behavioral goals and installs them in homeworl, the CPA. The CPA supports two general categories of perception tasks: detectors, which do not retain information between perception cycles; and trackers, which do. And Finance? Perception tasks are prioritized using an attention policy and are executed using a priority-based scheduler. A wide range of attention policies can be expressed in homeworl, this mechanism, including policies that dynamically modify perception priorities, policies in which emergency input overrides normal perception processing, and thesis, policies that dynamically change the level of resistance to perceptual distractions. Results show that perception intervals as short as 100 milliseconds can be achieved with a five-sensor robot under a variety of attention policies. Analysis of the system's performance under perceptual load shows that qualitatively different attention policies can be realized in the attention mechanism. We show that intelligent systems can use the CPA to implement the four primary characteristics of human perceptual attention: selective attention, sustained attention, divided attention, and top-down control. Adams, William Edward.
Untangling the Threads: Reduction for a Concurrent Object-Based Programming Model (Dissertation). Homeworl? The University of Texas at Austin, Department of banking and finance Computer Sciences. Report# TR-00-36 (dissertation). August 2000. 292 pages. Reduction is a technique for homeworl simplifying reasoning about systems where a set of sequential executions, which we call `threads', are executed concurrently. In a concurrent execution, steps from different threads are interleaved. A reduction theorem shows that a concurrent execution is equivalent to an execution in which all the steps of a given thread appear contiguously. These steps can be replaced by a single step representing the complete execution of the thread. Applying reduction to each thread in turn, we reduce a concurrent execution to marketing a sequence of atomic steps, one for each thread. Homeworl? This is a sequential execution, where threads execute one at a time.
Reasoning about the sequential reduction is significantly simpler than reasoning about the original execution. In the sequential execution, we do not need to consider the interactions of steps from different threads. We describe a model for essay on what is ailing game hockey concurrent systems, called `Seuss'. In this model, a program is a set of independently executing boxes, which communicate using a form of remote procedure call. We show how to reduce a concurrent execution of a Seuss program to a sequential execution. Since every concurrent execution is equivalent to a sequential execution, we can understand all possible executions of a Seuss program by understanding just its sequential executions. We show three main results. Homeworl? One gives sufficient conditions to guarantee that all threads in leadership essay mckinsey, an execution terminate.
The other two concern reduction of executions in which all threads terminate. We express the reduction results relative to restrictions on which pairs of threads can run concurrently. The first reduction theorem shows a restriction on concurrency that guarantees that every execution can be reduced to a sequential execution. The second reduction theorem gives a stronger restriction on concurrency (so less concurrency is allowed in an execution), but, in return, gives a reduced sequential execution that has stronger fairness properties (and thus better progress properties) than we get with the first theorem. Homeworl? To show these results, we use an operational semantics for a medical paper a simple Seuss language. The semantics is such that our results apply to any language implementing the Seuss model. Gao, Youxin. Homeworl? Interconnect Optimization in Deep Sub-micron Design under the Transmission Line Model. Writing? The University of Texas at Austin, Department of Computer Sciences.
Report# TR-00-35 (dissertation). March 2001. 127 pages. As the VLSI technology has been scaled down to 0.18nm in recent years and is expected to be scaled down to 0.05nm in the near future, interconnect delay becomes an important factor in achieving high performance. In deep sub-micron design, interconnect delay is shown to be 10 to a few hundred times bigger than the intrinsic gate delay for a global interconnect, and thus dominates the circuit delay.
To reduce interconnect delay, wire-sizing and buffer insertion/sizing are two effective techniques. Homeworl? One of the approaches to wire-sizing is continuous wire-sizing. In continuous wire-sizing, the shape of a wire is described by a continuous function, and the objective is to discuss find a shape function which minimizes delay or minimizes area subject to a delay bound. In the first part of this dissertation, we present some continuous wire-sizing results under the Elmore delay model. In the second part of this dissertation, we present some wire-sizing results under the transmission line model. Homeworl? In the third part of this dissertation, we present a graph based algorithm for optimal buffer insertion under accurate delay models. Thompson, Cynthia A. Semantic Lexicon Acquisition for Learning Natural Language Interfaces. The University of Texas at Austin, Department of a medical research paper Computer Sciences. Homeworl? Report# AI99-278 (dissertation). February 23, 1999.
87 pages. A long-standing goal for the field of phd research proposal marketing artificial intelligence is to enable computer understanding of human languages. A core requirement in reaching this goal is the ability to transform individual sentences into a form better suited for computer manipulation. This ability, called semantic parsing, requires several knowledge sources, such as a grammar, lexicon, and parsing mechanism. Building natural language parsing systems by homeworl, hand is a tedious, error-prone undertaking. We build on previous research in automating the essay, construction of such systems using machine learning techniques. The result is a combined system that learns semantic lexicons and semantic parsers from one common set of training examples. The input required is a corpus of sentence/representation pairs, where the representations are in the output format desired.
A new system, WOLFIE, learns semantic lexicons to be used as background knowledge by a previously developed parser acquisition system, CHILL. The combined system is tested on a real world domain of answering database queries. We also compare this combination to homeworl a combination of CHILL with a previously developed lexicon learner, demonstrating superior performance with our system. In addition, we show the ability of the system to learn to process natural languages other than English. Finally, we test the writing, system on an alternate sentence representation, and on a set of large, artificial corpora with varying levels of ambiguity and synonymy. One difficulty in using machine learning methods for building natural language interfaces is building the required annotated corpus.
Therefore, we also address this issue by using active learning to reduce the number of training examples required by both WOLFIE and CHILL. Experimental results show that the number of examples needed to homeworl reach a given level of performance can be significantly reduced with this method. Chen, Chung-Ping. Performance-Driven Interconnect Optimization (dissertation). The University of Texas at Austin, Department of banking and finance Computer Sciences. Report# TR-99-10 (dissertation). August 1998. 141 pages. In today's deep submicron designs, interconnect is responsible for 70-80% of the signal delay in a chip. This is in sharrp contrast to the situation of just a few years ago, when gate delay was the dominant factor in determining circuit performance, and when interconnect was essentially treated as a delay-free metal wire. If deep submicron integrated circuits are to excel in yield and homeworl, performance, the design process must focus on interconnects.
As a result, there is a paradigm shift in design methodology that puts emphasis on interconnect design. Wire sizing, buffer sizing, and buffer insertion are effective techniques to optimize interconnect performance and signal integrity. In this thesis, we present the phd research proposal marketing, results on interconnect optimization based on homeworl these techniques. Puchol, Carlos. An Automation-based Design Methodology for Distributed Hard-Real-Time Systems. The University of Texas at Austin, Department of Computer Sciences.
Report# TR-99-07 (dissertation). February 1999. 181 pages. Despite significant progress in realtime systems design in recent years, most research has concentrated on some specific areas such as scheduling, timing analysis or specification. This thesis focuses on leadership essay the proper definition of the homeworl, global structure of a realtime system, what it is and and how to integrate all its aspects towards obtaining a complete design that satisfies the specification. In this thesis, we consider the problem of providing a general, integrated, and highly automated framework for proposal the design of distributed hardrealtime systems which combines and exploits analytical techniques from homeworl individual areas of research. We propose such a framework, which may be thought of as providing a design methodology for the domain of phd research realtime systems. Our proposed methodology is based on three fundamental principles: automation, formalization and generality. We propose a specification language based on these notions and homeworl, developed from insight on the semantics and experience of the Modechart language (a specification language for realtime systems), also included in this dissertation.
Current practice in the design and implementation realtime systems is a largely ad hoc process of trial and error. Our design methodology, separates the discuss writing, concerns involved and provides an environment which allows a designer to systematically meet the design constraints. This is achieved by providing language support to capture highlevel designs and to generate code automatically from them, that, together with the homeworl, methodoligy presented and the application specific code, is designed to satisfy the realtime requirements. We present Modechart++, which supports the design methodology introduced and it is used to specify, verify, and synthesize code for distributed hardrealtime applications. Namjoshi, Kedar Sharad.
Ameliorating the State Explosion Problem. The University of Texas at Austin, Department of Computer Sciences. Report# TR-99-06 (dissertation). February 1999. 155 pages. Systems that maintain an ongoing interaction with their environment, such as Operating Systems Network Protocols and Microcontrollers, are commonplace.
The complexity of these systems necessitates a rigorous verification of correct behavior. Automatic verification methods such as Model Checking, while theoretically efficient, suffer in practice from the large state space of these systems, a phenomenon called State Explosion. State explosion often arises when verifying systems parameterized by the number of in essay component processes, and single systems with large data domains. The main contribution of homeworl this dissertation is in in essay, the development of abstraction methods that serve to ameliorate the state explosion problem for homeworl such systems. The first part of the dissertation presents abstractions for interesting classes of parameterized systems that reduce the infinite family of instances to writing a finite-state system, while exactly preserving correctness properties. Homeworl? For parameterized ring systems with a synchronizing token, it suffices to examine a few small instances in order to determine the correctness of discuss every instance of the system. The method is applicable to protocols such as mutual exclusion and Milner's Cycler. Somewhat surprisingly, the homeworl, verification problem is undecidable even if the token carries a single bit of information. Leadership Mckinsey? For parameterized synchronous systems, an exact abstraction reduces the parameterized system to a finite abstract graph. This abstraction method is applied to the verification of the SAEJ1850 industrial standard bus arbitration protocol.
We also present a general algorithm schema from which algorithms for model-checking several types of infinite-state systems can be derived. The second part of the dissertation presents a proof technique for showing that two programs are equivalent up to stuttering (repetition) of states. Stuttering arises when comparing programs that are at different levels of abstraction. The new formulation replaces the homeworl, global reasoning of discuss in essay earlier techniques with local reasoning, which considerably simplifies abstraction proofs. This new formulation is used in conjunction with a theorem prover to verify a data abstraction for the alternating-bit protocol. Ramachandran, Sowmya. Theory Refinement of Bayesian Networks with Hidden Variables. Homeworl? The University of Texas at Austin, Department of Computer Sciences. Report# AI98-265 (dissertation). May 1998. 129 pages.
Research in a medical research, theory refinement has shown that biasing a learner with initial, approximately correct knowledge produces more accurate results than learning from data alone. While techniques have been developed to revise logical and connectionist representations, little has been done to homeworl revise probabilistic representations. Bayesian networks are well-established as a sound formalism for representing and reasoning with probabilistic knowledge, and are widely used. There has been a growing interest in the problem of learning Bayesian networks from data. Mckinsey? However, there is homeworl no existing technique for learning or revising Bayesian networks with hidden variables (i.e. variables not represented in the data), that has been shown to be efficient, effective, and scalable through evaluation on real data. The few techniques that exist for revising such networks perform a blind search through a large space of revisions, and phd research proposal, are therefore computationally expensive. This dissertation presents Banner, a technique for using data to revise a given Bayesian network with Noisy-Or and Noisy-And nodes, to improve its classification accuracy. Additionally, the initial network can be derived directly from a logical theory expressed as propositional Horn-clause rules. Banner can revise networks with hidden variables, and add hidden variables when necessary. Unlike previous approaches to this problem, Banner employs mechanisms similar to those used in logical theory refinement techniques for using the data to focus the search for effective modifications to the network.
It can also be used to learn networks with hidden variables from data alone. We also introduce Banner-Pr, a technique for homeworl revising the parameters of phd research proposal a Bayesian network with Noisy-Or/And nodes, that directly exploits the computational efficiency afforded by these models. Experiments on several real-world learning problems in domains such as molecular biology and intelligent tutoring systems demonstrate that Banner can effectively and efficiently revise networks to significantly improve their accuracies, and homeworl, thus learn highly accurate classifiers. Comparisons with the Naive Bayes algorithm show that using the theory refinement approach gives Banner a substantial edge over learning from data alone. We also show that Banner-Pr converges faster and produces more accurate classifiers than an existing algorithm for learning the parameters of a network. Estlin, Tara Adrienne. Using Multi-Strategy Learning to Improve Planning Efficiency and Quality. The University of Texas at Austin, Department of Computer Sciences.
Report# AI98-269 (dissertation). May 1998. 117 pages. Writing? Artificial intelligence planning systems have become an important tool for automating a wide variety of tasks. However, even the homeworl, most current planning algorithms suffer from two major problems. First, they often require infeasible amounts of computation time to solve problems in most domains. And second, they are not guaranteed to return the best solution to bowdoin a planning problem, and in fact can sometimes return very low-quality solutions. One way to address these problems is to provide a planning system with domain-specific control knowledge, which helps guide the planner towards more promising search paths. Machine learning techniques enable a planning system to automatically acquire search-control knowledge for different applications. A considerable amount of planning and learning research has been devoted to acquiring rules that improve planning efficiency, also known as speedup learning.
Much less work has been down in learning knowledge to homeworl improve the quality of plans, even though this is an essential feature for many real-world planning systems. Furthermore, even less research has been done in acquiring control knowledge to improve both these metrics. The learning system presented in this dissertation, called SCOPE, is a unique approach to supplement learning control knowledge for planning. SCOPE learns domain-specific control rules for a planner that improve both planning efficiency and homeworl, plan quality, and it is one of the few systems that can learn control knowledge for partial-order planning. SCOPE's architecture integrates explanation-based learning (EBL) with techniques from inductive logic programming. Specifically, EBL is used to constrain an inductive search for control heuristics that help a planner choose between competing plan refinements.
Since SCOPE uses a very flexible training approach, its learning algorithm can be easily focused to prefer search paths that are better for discuss in essay writing particular evaluation metrics. SCOPE is extensively tested on several planning domains, including a logistics transportation domain and a production manufacturing domain. Homeworl? In these tests, it is shown to significantly improve both planning efficiency and quality and is shown to be more robust than a competing approach. Califf, Mary Elaine. Relational Learning Techniques for Natural Language Extraction. The University of Texas at essay mckinsey Austin, Department of Computer Sciences. Report# AI98-276 (dissertation). Homeworl? August 1998.
132 pages. The recent growth of online information available in the form of natural language documents creates a greater need for computing systems with the ability to process those documents to simplify access to the information. One type of processing appropriate for many tasks is information extraction, a type of text skimming that retrieves specific types of information from writing a medical research text. Although information extraction systems have existed for homeworl two decades, these systems have generally been built by hand and writing a medical research, contain domain specific information, making them difficult to port to other domains. A few researchers have begun to apply machine learning to information extraction tasks, but most of this work has involved applying learning to pieces of a much larger system. This dissertation presents a novel rule representation specific to natural language and a relational learning system, Rapier, which learns information extraction rules.
Rapier takes pairs of documents and filled templates indicating the information to be extracted and homeworl, learns pattern-matching rules to extract fillers for the slots in the template. The system is tested on several domains, showing its ability to learn rules for different tasks. Rapier's performance is compared to discuss writing a propositional learning system for information extraction, demonstrating the superiority of relational learning for some information extraction tasks. Because one difficulty in using machine learning to develop natural language processing systems is the homeworl, necessity of discuss writing providing annotated examples to supervised learning systems, this dissertation also describes an attempt to reduce the number of examples Rapier requires by employing a form of active learning. Experimental results show that the number of examples required to achieve a given level of performance can be significantly reduced by homeworl, this method. John, Ajita. Compilation of Constraint Systems to Parallel Procedural Programs (dissertation).
The University of Texas at Austin, Department of Computer Sciences. Proposal? Report# TR-98-17 (dissertation). September 1998. 124 pages. This dissertation reports on the compilation of constraint systems into task level parallel programs in a procedural language. This is the homeworl, only research, of bowdoin essay supplement which we are aware, which attempts to generate efficient parallel programs for numerical computations from constraint systems.
Computations are expressed as constraint systems. A dependence graph is derived from the constraint system and a set of input variables. The dependence graph, which exploits the homeworl, parallelism in the constraints, is mapped to the target language CODE, which represents parallel computation structures as generalized dependence graphs. Finally, parallel C programs are generated. To extract parallel programs of appropriate granularity, the essay on what is ailing our national game, following features have been included. (i) modularity, (ii) operations over structured types as primitives, (iii) definition of atomic functions. Homeworl? A prototype compiler has been implemented. The execution environment or software architecture is specified separately from the constraint system.
The domain of matrix computations has been targeted for essay on what is ailing our national hockey applications. Performance results for example programs are very encouraging. The feasibility of extracting efficient and portable parallel programs from domain-specific constraint systems has been established. Kakkad, Sheetal V. Address Translation and Storage Management for Persistent Object Stores. The University of Texas at Austin, Department of Computer Sciences.
Report# TR-98-07 (dissertation). March 1998. Homeworl? 219 pages. A common problem in software engineering is efficiently saving the state of application data structures to non-volatile storage between program executions. If this is accomplished using normal file systems, the programmer is forced to explicitly save the data to files as a stream of uninterpreted bytes, thereby losing both pointer semantics and object identity. A better approach is to use persistent object storage, a natural extension to virtual memory that allows heap data to be saved automatically to disk while maintaining the research, topology of data structures without any explicit programmer intervention. If persistent object stores are to replace the functionality of normal file systems, they must be able to address large volumes of data efficiently on standard hardware.
High-performance address translation techniques are necessary and important for supporting large address spaces on stock hardware. Homeworl? We present pointer swizzling at page fault time ([email protected]), a coarse-grained address translation scheme suitable for this purpose, and demonstrate it by building a persistent storage system for C++ called the discuss, Texas Persistent Store. We also discuss alternative approaches for portably incorporating fine-grained address translation in Texas for situations where coarse-grained swizzling alone is insufficient. As part of the performance results, we present a detailed analysis of various components of a coarse-grained address translation technique, including a comparison with overall I/O costs. Pointer swizzling requires run-time knowledge of homeworl in-memory object layouts to locate pointers in bowdoin essay, objects. We have developed and implemented Run-Time Type Description (RTTD) for this purpose; our implementation strategy is portable because it is based on homeworl a novel use of compiler-generated debugging information for extracting the necessary type description.
RTTD is also useful for other applications such as data structure browsing, and advanced profiling and tracing. Another part of this research is a study of the interaction between systems similar to [email protected] and operating systems, particularly regarding virtual memory management issues. We suggest areas where operating system implementations can be made more open to improve their performance and extensibility. Finally, we briefly discuss storage management issues, specifically log-structured storage, disk prefetching, and compressed in-memory storage, and provide directions for future research in this area. Moriarty, David E. Symbiotic Evolution of Neural Networks in Sequential Decision Tasks. The University of in essay writing Texas at homeworl Austin, Department of Computer Sciences. Report# AI97-257 (dissertation). January 1997. 115 pages. Leadership Mckinsey? Sequential decision tasks appear in many practical situations ranging from homeworl robot navigation to stock market trading. Because of the complexity of such tasks, it is often difficult to perceive the direct consequences of individual decisions and even harder to generate examples of correct behavior.
Consequently, difficult decision problems such as routing traffic, autonomous control, and resource allocation are often unautomated or are only semi-automated using ``rule-of-thumb'' strategies or simple heuristics. This dissertation proposes a general methodology for banking and finance thesis automating these tasks using techniques from homeworl machine learning. Specifically, this research studies the combination of evolutionary algorithms and artificial neural networks to learn and perform difficult decision tasks. Evolutionary algorithms provide an efficient search engine for building decision strategies and require only minimal reinforcement or direction from the environment. Neural networks provide an efficient storage mechanism for the decision policy and can generalize experiences from one situation to another. The learning system developed in thesis, this dissertation called SANE contains an evolutionary algorithm specifically tailored to sequential decision learning. Populations evolve faster than previous methods and homeworl, rarely converge on suboptimal solutions. SANE is extensively evaluated and compared to existing decision learning systems and other evolutionary algorithms. SANE is shown to be significantly faster, more robust, and more adaptive in on what is ailing, almost every situation. Moreover, SANE's efficient searches return more profitable decision strategies. The flexibility and scope of SANE is demonstrated in two real-world applications.
First, SANE significantly improves the play of a world champion Othello program. Second, SANE successfully forms neural networks that guide a robot arm to target objects while avoiding randomly placed obstacles. The contributions of this research are twofold: a novel integration of evolutionary algorithms and neural networks and an efficient system for learning decision strategies in complex problems. Hermjakob, Ph.D., Ulf. Learning Parse and homeworl, Translation Decisions From Examples With Rich Context. The University of Texas at Austin, Department of Computer Sciences. Report# AI97-261 (dissertation).
May 1997. Our National Game Hockey? 265 pages. The parsing of unrestricted text, with its enormous lexical and structural ambiguity, still poses a great challenge in natural language processing. The difficulties with traditional approaches, which try to master the homeworl, complexity of parse grammars with hand-crafted rules, have led to a trend towards more empirical techniques. Essay Supplement? We therefore propose a system for parsing and we choose a deterministic shift-reduce type parser that integrates part-of-speech tagging and syntactic and semantic processing, which not only makes parsing very efficient, but also assures transparency during the supervised example acquisition. Applying machine learning techniques, the system uses parse action examples to generate a parser in the form of a decision structure, a generalization of decision trees. To learn good parsing and translation decisions, our system relies heavily on context, as encoded in homeworl, currently 205 features describing the morphological, syntactical and leadership essay mckinsey, semantical aspects of a given parse state. Compared with recent probabilistic systems that were trained on 40,000 sentences, our system relies on more background knowledge and homeworl, a deeper analysis, but radically fewer examples, currently 256 sentences. We test our parser on lexically limited sentences from the Wall Street Journal and achieve accuracy rates of 89.8% for labeled precision, 98.4% for part of phd research speech tagging and 56.3% of test sentences without any crossing brackets.
Machine translations of 32 Wall Street Journal sentences to homeworl German have been evaluated by 10 bilingual volunteers and been graded as 2.4 on a 1.0 (best) to 6.0 (worst) scale for both grammatical correctness and meaning preservation. The translation quality was only minimally better (2.2) when starting each translation with the correct parse tree, which indicates that the parser is quite robust and that its errors have only a moderate impact on final translation quality. These parsing and translation results already compare well with other systems and, given the relatively small training set and amount of overall knowledge used so far, the results suggest that our system CONTEX can break previous accuracy ceilings when scaled up further. Clancy, Daniel Joseph. Solving Complexity and Ambiguity Problems in thesis, Qualitative Simulation.
The University of Texas at Austin, Department of Computer Sciences. Report# AI97-264 (dissertation). December 1997. 218 pages. Homeworl? Qualitative simulation is used to reason about the behavior of imprecisely defined dynamical systems for tasks such as monitoring, diagnosis, or design.
Often, however, simulation of complex dynamical systems results in either an intractable simulation or an essay supplement, ambiguous behavioral description. These results have caused concern regarding the scalability of techniques based upon qualitative simulation to real--world problems. Two different approaches are used to solve these problems: 1) abstraction and problem decomposition techniques are used during simulation to homeworl focus on relevant distinctions thus reducing the discuss writing, overall complexity of the simulation; and homeworl, 2) the expressiveness of the modeling language is extended to allow the thesis, modeler to incorporate additional information. Model decomposition and simulation (DecSIM) uses a component--based simulation algorithm to reason about the complex interactions within a sub--system independent of the interactions between subsystems. Variables within the model are partitioned into closely related components and a separate behavioral description is generated for each component. Links are maintained between related components to ensure that all of the constraints in homeworl, the model are satisfied. DecSIM results in exponential speed--up for models that lend themselves to decomposition.
Furthermore, DecSIM is guaranteed to generate a behavioral description that is equivalent to the description generated by a standard QSIM simulation modulo the temporal ordering of events for variables in separate components. A common source of leadership essay mckinsey irrelevant distinctions within qualitative simulation is intractable branching due to chatter. Chatter occurs when the derivative of homeworl a variable is writing constrained only by continuity within a restricted region of the state space. Homeworl? We present two different abstraction techniques that completely eliminate the problem of chatter by abstracting a chattering region into a single abstract state. Both techniques retain the essay is ailing our national game hockey, QSIM soundness guarantee and eliminate all instances of chatter without over--abstracting. To address the problem of an ambiguous behavioral description, Temporally Constrained QSIM (TeQSIM) integrates temporal logic model checking into the qualitative simulation process allowing the homeworl, modeler to specify behavioral information via trajectory constraints. Trajectory constraints, specified using an essay on what is ailing our national game hockey, extension of a propositional linear--time temporal logic, can be used to focus the simulation, simulate non--autonomous systems and reason about boundary condition problems. Johnstone, Mark Stuart, B.S., M.S. Non-Compacting Memory Allocation and Real-Time Garbage Collection. The University of Texas at Austin, Department of homeworl Computer Sciences. Report# TR-97-29 (dissertation).
December 1997. 442 pages. Dynamic memory management is phd research marketing a very important feature of modern programming languages, and one that is homeworl often taken for on what game hockey granted. Programmers frequently place great demands on homeworl the memory management facilities of their language, and expect the language to efficiently handle these requests. Unfortunately, memory management systems are not always up to essay mckinsey the task. The article which appears below strikingly illustrates how problems with a program's dynamic memory management can cause disastrous results, sometimes years after the program is written. Memory errors like this one are very difficult to prevent, and it is a certainty that they will occur again and homeworl, again.
It is leadership essay our hope that the homeworl, results presented in this research will lead to bowdoin essay a better under standing of the nature of homeworl memory management problems, and to improved implementations of memory management systems . We believe that improved memory management systems will ultimately lead to more robust software, and problems like the proposal marketing, one presented in the following article will become a rare exception rather than the rule. McCain, Norman Clayton. Causality in homeworl, Commonsense Reasoning about Actions. Phd Research Marketing? The University of Texas at Austin, Department of Computer Sciences. Report# TR-97-25 (dissertation). September 1997. 210 pages. In this dissertation, we investigate the role of causal knowledge in commonsense reasoning about action and change. We define a language in which a relatively simple form of causal knowledge is expressed. Using this language, we describe a novel approach to formalizing action domains as causal theories including domains that involve concurrency, nondeterminism, and things that change by themselves. Homeworl? We show that a subclass of causal theories can be translated into propositional logic by a generalization of banking Clark's completion procedure for logic programs.
Finally, we describe an implemented approach to automated query answering and satisfiability planning which is based on this translation. Rajaraman, Rajmohan. Sharing Resources in Distributed Systems. The University of Texas at homeworl Austin, Department of Computer Sciences. Report# TR-97-24 (dissertation). December 1997.
226 pages. An important goal of a distributed system is to effectively utilize the collective resources of the system, namely, the memory and the processors of the individual nodes. Leadership? This dissertation addresses certain problems pertaining to sharing memory and processors in distributed systems. In the first part of the dissertation, we study two important issues that arise while sharing memory in homeworl, a distributed system: memory contention and faults. We adopt a model of computation in which each node can send or receive at most a constant number of objects per step. Our main result is a simple protocol for providing fast access to shared objects in an environment in which memory contention is unconstrained and a constant fraction of the nodes and phd research, communication links may be faulty at any time. Our protocol combines techniques for hashing and erasure codes with a new mechanism for on-line replication.
We show that if each new access request is chosen according to a fixed probability distribution over the set of objects, then our protocol rapidly reaches a steady state in which each request is satisfied in an expected constant number of steps and homeworl, the throughput of the protocol is asymptotically optimal. We also prove that the protocol continues to remain in a steady state if changes in the access pattern are moderate. The second part of the dissertation studies load balancing, which is a mechanism for sharing processors in a distributed system. We analyze the effectiveness of a local load balancing algorithm in which each node repeatedly balances its load with its neighbors. Our main results concern the static version of the problem where we assume that the total load does not change with time. We analyze the writing, local balancing algorithm in terms of both the homeworl, imbalance of the initial load distribution and bowdoin supplement, several parameters of the network, including the number of nodes, the maximum degree, and the edge expansion. We show that the algorithm is worst-case optimal for all networks. We improve this result for the special case of homeworl ring networks by banking and finance thesis, showing that the local balancing approach is optimal (up to an additive linear term) for every initial distribution of load on the ring. Our results are also shown to hold for homeworl an asynchronous model of computation.
This dissertation demonstrates that a number of basic resource sharing problems admit efficient solutions in the form of simple local algorithms. Our algorithms are simple in the sense that the program running at essay each node can be expressed as a periodic process that repeatedly executes a small number of fixed operations. Our algorithms are local in the sense that each node either communicates with only its nearest neighbors or sends messages to only a small number of homeworl other nodes. Hermjakob, Ulf. Learning Parse and Translation Decisions From Examples With Rich Context. The University of Texas at Austin, Department of Computer Sciences. Report# TR-97-12 (dissertation). July 1997. 165 pages.
The parsing of unrestricted text, with its enormous lexical and structural ambiguity, still poses a great challenge in natural language processing. The difficulties with traditional approaches, which try to master the mckinsey, complexity of parse grammars with hand-crafted rules, have led to a trend towards more empirical techniques. We therefore propose a system for parsing and homeworl, translating natural language that learns from examples and uses some background knowledge. As our parsing model we choose a deterministic shift-reduce type parser that integrates part-of-speech tagging and syntactic and semantic processing, which not only is ailing game makes parsing very efficient, but also assures transparency during the homeworl, supervised example acquisition. Applying machine learning techniques, the system uses parse action examples to bowdoin generate a parser in the form of homeworl a decision structure, a generalization of writing paper decision trees.
To learn good parsing and translation decisions, our system relies heavily on context, as encoded in currently 205 features describing the morphological, syntactical and semantical aspects of a given parse state. Compared with recent probabilistic systems that were trained on 40,000 sentences, our system relies on more background knowledge and a deeper analysis, but radically fewer examples, currently 256 sentences. We test our parser on lexically limited sentences from the Wall Street Journal and achieve accuracy rates of 89.8% for labeled precision, 98.4% for part of speech tagging and 56.3% of homeworl test sentences without any crossing brackets. Machine translations of 32 Wall Street Journal sentences to German have been evaluated by 10 bilingual volunteers and been graded as 2.4 on a 1.0 (best) to 6.0 (worst) scale for both grammatical correctness and meaning preservation. The translation quality was only minimally better (2.2) when starting each translation with the correct parse tree, which indicates that the parser is quite robust and that its errors have only a moderate impact on final translation quality. Leadership Essay Mckinsey? These parsing and translation results already compare well with other systems and, given the relatively small training set and amount of overall knowledge used so far, the results suggest that our system Contex can break previous accuracy ceilings when scaled up further.
Hsu, Tsan-sheng. Homeworl? Graph Augmentation and game hockey, Related Problems: Theory and Practice. Homeworl? The University of Texas at Austin, Department of bowdoin Computer Sciences. Report# TR-97-03 (dissertation). January 24, 1997. 346 pages. Graphs play an important role in homeworl, modeling the underlying structure of many real world problems. In this thesis, we investigate several interesting graph problems. The first part of this thesis focuses on the problem of phd research proposal finding a smallest set of homeworl edges whose addition makes an input undirected graph satisfy a given connectivity requirement.
This is a fundamental graph theoretic problem that has a wide variety of applications in designing reliable networks and database systems. We have obtained efficient sequential and parallel algorithms for finding smallest augmentations to satisfy 3-edge-connectivity, 4-edge-connectivity, biconnectivity, triconnectivity, and four-connectivity. Bowdoin Essay Supplement? Our parallel algorithms are developed on the PRAM model. Our approach in homeworl, obtaining these results is to first construct a data structure that describes all essential information needed to augment the input graph, e.g., the set of all separating sets and the set of all maximal subsets of vertices that are highly connected. Based on this data structure, we obtain a lower bound on the number of edges that need to be added and prove that this lower bound can be always reduced by one by properly adding an edge. The second part of the thesis focuses on the implementation of PRAM-based efficient parallel graph algorithms on a massively parallel SIMD computer. This work was performed in two phases.
In the first phase, we implemented a set of parallel graph algorithms with the constraint that the size of the input cannot be larger than the writing research, number of physical processors. Homeworl? For this, we first built a kernel which consists of commonly used routines. Then we implemented efficient parallel graph algorithms by calling routines in the kernel. In the bowdoin supplement, second phase, we addressed and solved the issue of allocating virtual processors in our programs. Under our current implementation scheme, there is no bound on the number of virtual processors used in homeworl, the programs as long as there is essay our national hockey enough memory to store all the data required during the computation. The performance data obtained from extensive testing suggests that the extra overhead for simulating virtual processors is moderate and the performance of our code tracks theoretical predictions quite well. Zelle, John Marvin, Ph.D. Using Inductive Logic Programming to Automate the Construction of Natural Language Parsers.
The University of Texas at homeworl Austin, Department of essay Computer Sciences. Homeworl? Report# AI96-249 (dissertation). December 1995. 121 pages. Designing computer systems to understand natural language input is phd research marketing a difficult task. In recent years there has been considerable interest in corpus-based methods for constructing natural language parsers.
These empirical approaches replace hand-crafted grammars with linguistic models acquired through automated training over language corpora. A common thread among such methods to date is the use of propositional or probabilistic representations for the learned knowledge. This dissertation presents an alternative approach based on techniques from a subfield of machine learning known as inductive logic programming (ILP). ILP, which investigates the learning of relational (first-order) rules, provides an empirical method for acquiring knowledge within traditional symbolic parsing frameworks. This dissertation details the architecture, implementation and evaluation of CHILL, a computer system for acquiring natural language parsers by training over corpora of parsed text. CHILL treats language acquisition as the learning of search-control rules within a logic program that implements a shift-reduce parser. Control rules are induced using a novel ILP algorithm which handles difficult issues arising in the induction of search-control heuristics. Both the homeworl, control-rule framework and the induction algorithm are crucial to CHILL'S success. The main advantage of CHILL over propositional counterparts is its flexibility in handling varied representations.
CHILL has produced parsers for various analyses including case-role mapping, detailed syntactic parse trees, and a logical form suitable for expressing first-order database queries. Leadership Essay Mckinsey? All of homeworl these tasks are accomplished within the same framework, using a single, general learning method that can acquire new syntactic and semantic categories for resolving ambiguities. Experimental evidence from both artificial and real-world corpora demonstrates that CHILL learns parsers as well or better than previous artificial neural network or probabilistic approaches on comparable tasks. In the database query domain, which goes beyond the scope of previous empirical approaches, the learned parser outperforms an existing hand-crafted system. These results support the claim that ILP techniques as implemented in CHILL represent a viable alternative with significant potential advantages over neural-network, propositional, and probabilistic approaches to empirical parser construction. Lee, Wan Yik. Spatial Semantic Hierarchy for a Physical Mobile Robot.
The University of Texas at Austin, Department of is ailing our national hockey Computer Sciences. Report# AI96-254 (dissertation). December 1996. 160 pages. This dissertation describes research to extend and improve the homeworl, Spatial Semantic Hierarchy (SSH) approach to robot exploration and paper, mapping, and to demonstrate and homeworl, evaluate its effectiveness in controlling physical mobile robots. Proposal Marketing? The SSH approach for homeworl robot exploration and mapping was first developed in the context of a simulated robot, NX, and tested in simulated environments with very simple models of essay on what is ailing our national sensorimotor error.
Physical implementations of aspects of the SSH approach have been built by other researchers but they do not provide an adequate demonstration of its strengths or an homeworl, adequate analysis of its conditions of applicability. The dissertation work extended and banking and finance, improved the SSH mapping theory from homeworl its original prototype to a version capable of handling real sensorimotor interaction with a real (offlce) environment. The underlying goal of this research is to mckinsey demonstrate how symbolic representations and symbol-based behaviors of an autonomous robot can be grounded in non-symbolic, continuous sensorimotor interaction with a real environment through the SSH approach. The extended theory is implemented on a physical robot to explore a previously unknown environment, and to create an homeworl, SSH spatial description of the environment. This dissertation describes the improved SSH mapping theory, the details of its implementation on a physical robot, and a demonstration and essay on what our national game hockey, evaluation of several features of the implementation. Kay, Ph.D., Herbert. Refining Imprecise Models and Their Behaviors. The University of homeworl Texas at Austin, Department of Computer Sciences.
Report# AI96-258 (dissertation). December 1996. 143 pages. This dissertation describes methods for discuss in essay writing simulating and refining imprecisely-defined Ordinary Differential Equation (ODE) systems. When constructing a model of a physical process, a modeler must cope with uncertainty due to homeworl incomplete knowledge of the process. Essay On What Game Hockey? For tasks such as design and diagnosis, the effects of this uncertainty must be considered. However, predicting the behavior of an imprecisely-defined model is not easy since the model covers a space of many precise instances, each of which behaves differently. While model uncertainty cannot be completely eliminated, it is homeworl possible to reduce it. Model refinement uses observations of a medical research a physical process to rule out homeworl, portions of the model space that could not have produced the observations. As more experience with the physical process is gained, the imprecision in the model is further reduced.
This dissertation describes three methods for writing research reasoning with imprecise ODE models. SQsim is a simulator that produces a guaranteed bound on the behavior of an imprecise ODE model. By using a multiple-level representation and inference methods that span the qualitative-to-quantitative spectrum, SQslM produces predictions whose uncertainty is homeworl consistent with model imprecision. We demonstrate SQsim on a complex, nonlinear chemical process and leadership mckinsey, compare it to other methods for simulating imprecise ODE models. MSQUID is a function estimator for fitting (and bounding) noisy data that is known to be monotonic. It uses a neural- network inspired model and nonlinear constrained optimization to search a space of monotonic functions.
We prove that MSQUID can estimate any monotonic function and show that it produces better estimates than does unconstrained optimization . SQUID, which uses SQsim and MSQUID as components, is homeworl a system identification method that refines an imprecise model using a stream of observations from a physical process. Paper? SQUID uses refutation to rule out portions of the model space that are inconsistent. Mahoney, Ph.D., J. Jeffrey. Combining Symbolic and Connectionist Learning Methods to Refine Certainty-Factor Rule-Bases. The University of Texas at Austin, Department of Computer Sciences. Report# AI96-260 (dissertation). May 1996. 100 pages. Homeworl? This research describes the system RAPTURE, which is designed to revise rule bases expressed in certainty-factor format. Recent studies have shown that learning is facilitated when biased with domain-specific expertise and have also shown that many real-world domains require some form of probabilistic or uncertain reasoning in order to successfully represent target concepts.
RAPTURE was designed to take advantage of essay both of these results. Beginning with a set of certainty-factor rules, along with accurately-labeled training examples RAPTURE makes use of both symbolic and connectionist learning techniques for revising the rules in order that they correctly classify all of the training examples. A modified version of homeworl backpropagation is used to adjust the certainty factors of the rules ID3's information-gain heuristic is used to essay on what hockey add new rules and the Upstart algorithm is used to create new hidden terms in the rule base. Homeworl? Results on refining four real-world rule bases are presented that demonstrate the effectiveness of this combined approach. Two of these rule bases were designed to identify particular areas in strands of DNA one is for identifying infectious diseases and the fourth attempts to diagnose soybean diseases. The results of phd research RAPTURE are compared with those of backpropagation, C4.5 KBANN and other learning systems.
RAPTURE generally produces sets of rules that are more accurate than these other systems often creating smaller sets of rules and using less training time. Chen, Yao-Ping. Algorithms for homeworl VLSI Partitioning and Routing. The University of Texas at Austin, Department of Computer Sciences. Report# TR-96-33 (dissertation). November 26, 1996. 117 pages. In this dissertation, we study several partitioning and routing problems in essay, VLSI designs.
The first one is multiple chip design partitioning. Homeworl? We are given a library of prefabricated chips, and we need to partition a large design into a medical research parts such that each part can be realized by homeworl, a chip in the library. We present an algorithm to minimize both the number of chips and the interconnection cost in phd research marketing, realizing a design. Next, we study a partitioning problem in Field Programmable Gate Array (FPGA) designs. We apply register relocation techniques during the clustering of registers and combinational modules to minimize the number of FPGA logic modules. This problem is exactly solved by homeworl, modeling it as a linear program, following a sophisticated transformation from an integer nonlinear program.
Our third topic deals with feed-through pin assignment for routing of standard-cell designs. It is a necessary process between global routing and detailed routing. We present an optimal algorithm for banking and finance single row feed-through pin assignment under some reasonable constraints. It transform the original problem to a path problem on a special graph. Homeworl? The exact single row algorithm serves as the basic procedure in an iterative algorithm for the multiple row feed-though pin assignment. The fourth problem is clock net routing. We simultaneously generate the routing topology and the positions of clock buffers. Clock buffers are inserted to minimize delay while zero skew requirement is satisfied. Our algorithm gives excellent results on writing reducing wire length and homeworl, phase delay, while feasible buffer positions are efficiently obtained using a graph theoretic approach. Finally, we consider partitioning clock pins into clusters aiming to banking and finance minimize and balance the capacitive load of homeworl each cluster of clock pins. This preprocessing step for buffered clock tree routing can greatly reduce the effort in post-routing load balancing by adjusting wire widths or lengths.
We present a near-optimal algorithm with provably small error by using dynamic programming techniques. Lai, Glenn G. Efficient Searches for VLSI Applications. The University of Texas at Austin, Department of banking thesis Computer Sciences. Report# TR-96-32 (dissertation). November 26, 1996. 108 pages. Given a collection of objects, a region query finds those that intersect a specified area and homeworl, a neighbor search finds the neighbors located within a specified distance of an object. Banking And Finance? For search efficiency, the search areas are usually constrained to be rectangular and the objects are represented by their minimal, rectangular bounding boxes. A spatial structure is used to store the homeworl, objects for bowdoin essay supplement efficient searches. The focus of this dissertation is on homeworl the interactive response times as perceived by a human designer with respect to both search operations.
Region queries and neighbor searches are used extensively in VLSI ap-plications. For example, to display the visible portion of a design in an edit window, search for discuss objects that intersect the homeworl, edit window. To modify an object interactively, pick the object by making the search area a point. In design-rule checking, employ the neighbor-search operation to find nearby objects that can interfere with an object. Banking? Based on properties of VLSI designs and analyses of real VLSI data, this dissertation describes the main data distributions that a spatial structure is homeworl expected to encounter, argues for a space-subdivision paradigm, presents the paradigm's worst-case performance, and explains why the worst-case performance is irrelevant in practice. Based on this paradigm, this dissertation presents HV/VH trees and hinted quad trees designed with the is ailing our national, classical tradeoffs between memory usage and search speed, and compares them to other spatial structures. Kaltenbach, Markus. Interactive Verification Exploiting Program Design Knowledge: A Model-Checker for UNITY.
The University of Texas at Austin, Department of homeworl Computer Sciences. Report# TR-96-22 (dissertation). January 1997. 270 pages. The design of concurrent programs that run reliably and efficiently on networks of interconnected computers will remain an important challenge for the foreseeable future, as the size and complexity of such systems will continue to leadership essay mckinsey grow. Verification techniques based on homeworl appropriate design formalism and complemented by mechanical support will play an important role for asserting the proposal, correctness and quality of these concurrent systems. In this dissertation we focus on providing suitable automated assistance to the design and verification of concurrent systems by homeworl, developing a model checker or finite state programs and propositional UNITY logic. Combining the verification technique of model checking with the temporal logic of UNITY was motivated by two goals, namely to exploit the simplicity and banking and finance thesis, structure of UNITY logic as to homeworl provide efficient checking algorithms for a mostly automated verification, and to allow the user to interactively supply design knowledge in order to thesis improve the system performance.
These goals have been met in homeworl, three ways: (i) we have derived a model checking procedure for discuss in essay writing safety and basic progress properties that is based on homeworl the proof rules of leadership essay UNITY logic, increases the efficiency of verification by making it possible to replace fixpoint computations by homeworl, simple verification checks, and, moreover, takes advantage of state-based design knowledge in the form of invariants; (ii) we have developed and formally investigated a new theory of leadership generalized progress, in which action-based hints can be provided to indicate how progress is achieved and which can be used to improve the efficiency of checking and reasoning about arbitrary progress properties; (iii) finally, we have implemented the resulting model checking procedures as part of the UNITY Verifier System and homeworl, have used our implementation to demonstrate the improved verification performance with several examples. Collins, Timothy Scott. Efficient Matrix Computations through Hierarchical Type Specifications (dissertation) This document has a part A.. And Finance? The University of Texas at homeworl Austin, Department of phd research Computer Sciences. Report# TR-96-13b (dissertation). May 1996. Homeworl? 98 pages.
Matrix computations arise in writing, the implementations of almost all scientific and engineering applications. Due to the physical properties of homeworl these problems and the nature of the solution methods, the and finance, resulting matrices often have complicated structure. That is, the values in the matrices have some regular pattern in their organization. Although it is well known that structure plays a crucial role in both the representational and computational efficiency of homeworl matrix computations, current programming systems offer little direct support for the representation of essay our national complicated structured matrices that arise in modern applications. Also, matrix computations are often so large that parallelism is necessary to achieve acceptable execution times. Homeworl? The combination of complicated structure and parallelism makes coding matrix computations a tedious and error-prone task. This dissertation investigates both the formal and pragmatic issues involved in providing powerful language and compiler capabilities for simplifying the task of constructing efficient sequential and parallel implementations for matrix computations. The central concept is a type theory for special recursive matrices called hierarchical matrix structures.
The theory of hierarchical matrix structures provides a foundation for both capturing and exploiting the representational and computational semantics of structured matrices. The MaTRiX++ environment is a prototype language and compiler implementation of the hierarchical matrix theory. Evaluation of the system suggests that the specifications of matrix computations in MaTRiX++ are concise. Also, the execution times of banking generated implementations are comparable to hand-tuned code. Contributions of homeworl this work are both formal and practical: the theory of hierarchical matrices provides a model for describing and exploiting matrix computation semantics; the Ma-TRiX++ prototype environment supports rapid specification of complicated matrix computations without sacrificing efficiency. In addition, the hierarchical typing methodology presents a metaphor for writing a medical research paper exposing the deep relationship between physical problems and their matrix structures. Collins, Timothy Scott. Efficient Matrix Computations through Hierarchical Type Specifications (dissertation) This document has a part B.. Homeworl? The University of Texas at Austin, Department of Computer Sciences.
Report# TR-96-13a (dissertation). May 1996. 98 pages. Matrix computations arise in the implementations of supplement almost all scientific and engineering applications. Due to the physical properties of these problems and the nature of the solution methods, the resulting matrices often have complicated structure. That is, the values in the matrices have some regular pattern in their organization. Although it is well known that structure plays a crucial role in both the representational and computational efficiency of homeworl matrix computations, current programming systems offer little direct support for banking and finance thesis the representation of complicated structured matrices that arise in modern applications. Also, matrix computations are often so large that parallelism is homeworl necessary to achieve acceptable execution times. The combination of complicated structure and parallelism makes coding matrix computations a tedious and error-prone task. This dissertation investigates both the formal and pragmatic issues involved in providing powerful language and compiler capabilities for simplifying the task of constructing efficient sequential and parallel implementations for matrix computations.
The central concept is a type theory for special recursive matrices called hierarchical matrix structures. The theory of essay on what our national hockey hierarchical matrix structures provides a foundation for both capturing and exploiting the representational and computational semantics of structured matrices. The MaTRiX++ environment is a prototype language and compiler implementation of the homeworl, hierarchical matrix theory. Evaluation of the system suggests that the specifications of matrix computations in MaTRiX++ are concise. Also, the execution times of generated implementations are comparable to hand-tuned code. Contributions of this work are both formal and and finance thesis, practical: the theory of hierarchical matrices provides a model for describing and exploiting matrix computation semantics; the Ma-TRiX++ prototype environment supports rapid specification of homeworl complicated matrix computations without sacrificing efficiency. In addition, the supplement, hierarchical typing methodology presents a metaphor for exposing the deep relationship between physical problems and their matrix structures. Stuart, Douglas Alan. Formal Methods for homeworl Real-Time Systems.
The University of Texas at Austin, Department of Computer Sciences. Report# TR-96-01 (dissertation). January 1996. 350 pages. Computers are increasingly being used to essay control safety-critical systems which depend on the absolute timing of system events for their correctness. Formal specification and verification is one approach to assuring that such systems are correct. Mechanical verification can enhance the utility of formal methods by homeworl, increasing their applicability and reliability.
This work will focus on a particular mechanical verification technique, model checking, in writing research, the context of a specific specification language environment, RTL and Modechart. Homeworl? RTL is a first order logic for reasoning about the times of occurrences of system events. Modechart is a specification language introduced to organize RTL specifications. Phd Research Proposal? Model checking can be used to show that every computation of a Modechart specification satisfies a property specified in RTL. Computation graphs will be introduced to represent the set of all computations of a Modechart specification for model checking. Decision procedures for a number of classes of RTL formulas with respect to Modechart specifications will also be introduced. Homeworl? One of the disadvantages of model checking as a verification technique is that it is extremely susceptible to the state explosion problem. One focus of this work is presenting different techniques for mitigating the on what is ailing our national game hockey, state explosion problem. These include substituting computation graph reachability queries for more complex RTL formulas, using monitor modes, using partial computation graphs, exploiting determinism, and using simulation-verification. Sirosh, Joseph.
A Self-Organizing Neural Network Model Of The Primary Visual Cortex. The University of Texas at Austin, Department of Computer Sciences. Report# AI95-237 (dissertation). August 1995. This work is aimed at modeling and analyzing the homeworl, computational processes by discuss, which sensory information is learned and represented in the brain. First, a general self-organizing neural network architecture that forms efficient representations of homeworl visual inputs is and finance presented. Two kinds of visual knowledge are stored in the cortical network: information about the principal feature dimensions of the visual world (such as line orientation and ocularity) is stored in the afferent connections, and correlations between these features in the lateral connections. During visual processing, the cortical network filters out these correlations, generating a redundancy-reduced sparse coding of the homeworl, visual input. Bowdoin Essay Supplement? Through massively parallel computational simulations, this architecture is shown to give rise to homeworl structures similar to those in the primary visual cortex, such as (1) receptive fields, (2) topographic maps, (3) ocular dominance, orientation and size preference columns, and (4) patterned lateral connections between neurons. The same computational process is writing a medical research paper shown to homeworl account for many of the dynamic processes in the visual cortex, such as reorganization following retinal and cortical lesions, and perceptual shifts following dynamic receptive field changes. These results suggest that a single self-organizing process underlies development, plasticity and visual functions in the primary visual cortex.
Subramanian, Siddarth, Ph.D. Qualitative Multiple-Fault Diagnosis of Continuous Dynamic Systems Using Behavioral Modes. The University of supplement Texas at Austin, Department of Computer Sciences. Report# AI95-239 (dissertation). December 1995. 128 pages. As systems like chemical plants, power plants, and automobiles get more complex, online diagnostic systems are becoming increasingly important. One of the ways to homeworl rein in the complexity of describing and reasoning about large systems such as these is to describe them using qualitative rather than quantitative models. Model-based diagnosis is a class of diagnostic techniques that use direct knowledge about how a system functions instead of expert rules detailing causes for every possible set of essay supplement symptoms of a broken system. Our research builds on homeworl standard methods for model-based diagnosis and extends them to leadership the domain of complex dynamic systems described using qualitative models.
We motivate and describe our algorithm for diagnosing faults in a dynamic system given a qualitative model and a sequence of qualitative states. The main contributions in this algorithm include a method for propagating dependencies while solving a general constraint satisfaction problem, and a method for verifying the compatibility of homeworl a behavior with a model across time. The algorithm can diagnose multiple faults and and finance thesis, uses models of homeworl faulty behavior, or behavioral modes. We then demonstrate these techniques using an implemented program called QDOCS and test it on some realistic problems. Through our experiments with a model of the reaction control system (RCS) of the is ailing, space shuttle and homeworl, with a level-controller for a reaction tank, we show that QDOCS demonstrates the best balance of generality, accuracy and efficiency among known systems. Rajagopalan, Raman M, Ph.D. Qualitative Reasoning about essay supplement Dynamic Change in the Spatial Properties of a Physical System.
The University of Texas at Austin, Department of Computer Sciences. Report# AI95-241 (dissertation). December 1995. 224 pages. Spatial reasoning is an essential part of human interaction with the physical world. Homeworl? Of the many models that have been developed to on what support automated spatial reasoning, most rely on numerical descriptions of a spatial scene. This dissertation addresses problems where only qualitative descriptions of a spatial scene are available, such as natural language understanding, qualitative design, and physics problem solving. Homeworl? We provide the first set of solutions, given only a qualitative description of banking a spatial scene, for homeworl reasoning about dynamic change in both the spatial and non-spatial properties of a physical system. We use diagrams to compactly input the spatial scene for a problem, and text to describe any non-spatial properties. To match diagram and text objects so their descriptions can be integrated, we have developed a method for describing the conceptual class of objects directly in diagrams.
Then, diagram and text objects can be matched based on their conceptual class. The given problem is solved through qualitative simulation, and all spatial reasoning is done with respect to an extrinsic Cartesian coordinate system. Writing? We model the homeworl, relative positions of objects through inequality constraints on discuss in essay writing the coordinates of the points of interest. Changes due to translational motion are detected by noting changes in the truth values of inequality constraints. We model the orientation of an homeworl, object through knowledge of its extremal points and phd research, its qualitative angle of rotation with respect to each coordinate axis. This model has been used to reason qualitatively about the homeworl, effects of rotational motion, such as changes in the area projected by one object onto a medical another. We have implemented our spatial representation as production rules and as model fragments in the QPC qualitative modeling system.
The former has been used for solving static-world problems such as understanding descriptions of an urban scene. The latter has been used to reason about situations where changes in spatial properties play a critical role, such as the operation of homeworl transformers, oscillators, generators, and motors. To support dynamic spatial reasoning, we have expanded the modeling capabilities of QPC to include methods for modeling piecewise-continuous variables, non-permanent objects, and phd research marketing, variables with circular quantity spaces. Murray, Kenneth S. Learning as Knowledge Integration. The University of Texas at Austin, Department of Computer Sciences. Report# TR-95-41 (dissertation). November 1995. 300 pages. A fundamental challenge for Artificial Intelligence is developing methods to build and homeworl, maintain knowledge-based systems.
Knowledge integration is the task of identifying how new and prior knowledge interact while incorporating new information into a knowledge base. This task is pervasive because substantial knowledge bases must be developed incrementally: segments of knowledge are added separately to a growing body of on what hockey knowledge. This task is difficult because new and prior knowledge may interact in very subtle and surprising ways, and unanticipated interactions may require changes to the knowledge base. Performing knowledge integration involves determining and effecting these changes. This research investigates knowledge integration as a machine learning task. Its contributions include formalizing knowledge integration as a machine learning task, developing a computational model for performing knowledge integration, and instantiating the computational model as an implemented machine learning program. The study of knowledge integration and methods that perform it is important both for pragmatic concerns of building knowledge-based systems and for theoretical concerns of understanding learning systems. Homeworl? By identifying subtle conflicts and gaps in knowledge, knowledge integration facilitates building knowledge-based systems. By avoiding unnecessary restrictions on learning situations, knowledge integration reveals important sources of writing learning bias and permits learning behaviors that are more opportunistic than do traditional machine learning tasks. REACT is homeworl a computational model that identifies three essential activities for performing knowledge integration. Elaboration assesses how new and prior knowledge interact.
The system's limited capacity to explore the interactions of new and prior knowledge requires methods to focus its attention. This focus is achieved by restricting elaboration to essay consider only selected segments of prior knowledge. Recognition selects the prior knowledge that is considered during elaboration. By identifying the homeworl, consequences of new information for relevant prior knowledge, recognition and elaboration reveal learning opportunities, such as inconsistencies and writing research, gaps in homeworl, the extended knowledge base. Adaptation exploits these learning opportunities by modifying the new or prior knowledge. KI is proposal marketing a machine learning program that implements the REACT model. Empirical studies demonstrate that KI provides significant assistance to knowledge engineers while integrating new information into a large knowledge base.
Kleyn, Michiel Florian Eugene. A High Level Language for homeworl Specifying Graph-Based Languages and their Programming Environments (dissertation). The University of Texas at Austin, Department of Computer Sciences. Report# TR-95-34 (dissertation). Bowdoin Essay Supplement? November 1995.
192 pages. This dissertation addresses the problem of creating interactive graphical programming environments for visual programming languages that are based on directed graph models of computation. Such programming environments are essential to using these languages but their complexity makes them difficult and time consuming to construct. Homeworl? The dissertation describes a high level specification language, Glide, for defining integrated graphical/textual programming environments for such languages. It also describes the design of a translation system, Glider, which generates an executable representation from specifications in the Glide language. Glider is a programming environment generator; it automates the task of bowdoin supplement creating the programming environments used for developing programs in graphbased visual languages.
The capabilities supported by the synthesized programming environments include both program capture and animation of executing programs. The significant concepts developed for this work and embodied in the abstractions provided by homeworl, the Glide language are: an approach to treating programs as structured data in a way that allows an integrated representation of banking and finance graph and text structure; a means to navigate through the homeworl, structure to identify program components; a query language to concisely identify collections of components in the structure so that selective views of program components can be specified; a unified means of representing changes to the structure so that editing, execution, and animation semantics associated with the language can all be captured in a uniform way; and a means to associate the graphical capabilities of user interface libraries with displaying components of the language. The data modeling approach embodied in the Glide specification language is a powerful new way of representing graph-based visual languages. The approach extends the is ailing, traditional restricted mechanisms for specifying composition of homeworl text language structure. Essay? The extensions allow programming in homeworl, visual languages to be expressed as a seamless extension of programming in text-based languages. A data model of a graph-based visual language specified in Glide forms the basis for essay specifying the program editing, language execution semantics, and program animation in a concise and abstract way. Wu, Shiow-Yang. Decomposition Abstraction in Parallel Rule Languages. The University of Texas at Austin, Department of Computer Sciences. Report# TR-95-33 (dissertation). August 1995.
14 pages. As the applications of production systems expand from traditional artificial intelligence domains into the data intensive and homeworl, real-time arenas, program complexity and discuss, the volume of data also increase dramatically. Over a decade of efforts to exploit this opportunity, the previous approaches of employing parallel match and/or syntactic based multiplc-rulc-firing have failed to raise the homeworl, performance to a satisfactory level. Based on the observations made in a pilot study, we found that by incorporating application semantics, it is possible to achieve a much higher level of concurrency than what can be achieved by traditional techniques. This dissertation presents a new approach called decomposition abstraction that aims at the exploration of application parallelism in production systems.
Decomposition abstraction is the process of organizing and specifying parallel decomposition strategies. We propose a general object-based framework and phd research proposal, present the formal semantics of a set of homeworl decomposition abstraction mechanisms that are applicable to any rule language. A semantic-based dependency analysis technique that uncovers hidden concurrency based on a new notion of functional dependency successfully derives parallelism that is very difficult, if not impossible, to discover by traditional syntactic analysis techniques. The effectiveness of our approach is validated both by simulation and implementation on Sequent Symmetry multiprocessor. The performance results demonstrate the potential of the decomposition abstraction approach to achieve linear and scalable speedup. Kartha, G. Neelakantan. A Mathematical Investigation of Reasoning About Actions. The University of bowdoin essay Texas at Austin, Department of Computer Sciences. Report# TR-95-17 (dissertation). May 1995.
167 pages. Reasoning about actions is a central area of research in artificial intelligence, related to the study of commonsense and nonmonotonic reasoning, knowledge representation, planning and homeworl, theorem proving. The methodology of research in this area has not been quite satisfactory; typically, a new proposal for reasoning about actions is illustrated by way of essay a few examples that have been known to be challenging to formalize, and then claims are made that the method works in general. This is not very satisfactory since minor modifications of the examples might prove (indeed, have proven, in many cases) to be difficult or impossible for the new proposal to handle correctly. Such an example-oriented methodology also makes it difficult to compare various formalisms and thus to synthesize new ones. In this dissertation, we present a systematic study of reasoning about actions. The shortcomings of the homeworl, example-oriented methodology are avoided as follows. First, declarative languages for describing actions are introduced and thesis, their semantics defined in homeworl, such a way as to phd research proposal capture the underlying commonsense intuitions.
Different methods of reasoning about actions are presented as translations from these languages and homeworl, then the adequacy of the different formalizations is established by proving the soundness and completeness of the in essay writing, translations. The new declarative languages we propose are capable of representing rich action domains, such as those where actions can have indirect effects. Homeworl? In addition, we introduce a new approach to reasoning about actions and leadership essay mckinsey, show its adequacy in homeworl, formalizing a large class of action domains. We show that, in conjunction with this approach, symbolic methods can often be employed for automating reasoning about actions. Finally, we point out some limitations of proposed methods of reasoning about actions and phd research proposal marketing, suggest ways to overcome these limitations.
Leow, Wee Kheng. VISOR: Learning Visual Schemas in Neural Networks for Object Recognition and Scene Analysis. The University of Texas at Austin, Department of Computer Sciences. Report# AI94-219 (dissertation). Homeworl? June 1994. 166 pages. This dissertation describes a neural network system called VISOR for object recognition and scene analysis.
The research with VISOR aims at three general goals: (1) to contribute to building robust, general vision systems that can be adapted to different applications, (2) to contribute to a better understanding of the human visual system by banking and finance thesis, modeling high-level perceptual phenomena, and (3) to address several fundamental problems in neural network implementation of intelligent systems, including resource-limited representation, and homeworl, representing and leadership mckinsey, learning structured knowledge. These goals lead to a schema-based approach to visual processing, and focus the research on the representation and learning of visual schemas in neural networks. Homeworl? Given an input scene, VISOR focuses attention at one component of an bowdoin, object at a time, and extracts the shape and position of the component. The schemas, represented in a hierarchy of maps and connections between them, cooperate and homeworl, compete to determine which one best matches the on what is ailing our national game hockey, input. VISOR keeps shifting attention to homeworl other parts of the scene, reusing the same schema representations to identify the objects one at a time, eventually recognizing what the in essay, scene depicts. The recognition result consists of labels for the objects and the entire scene. VISOR also learns to encode the schemas' spatial structures through unsupervised modification of homeworl connection weights, and reinforcement feedback from the environment is used to determine whether to adapt existing schemas or create new schemas to and finance thesis represent novel inputs. Homeworl? VISOR's operation is based on cooperative, competitive, and parallel bottom-up and top-down processes that seem to underlie many human perceptual phenomena. Therefore, VISOR can provide a computational account of many such phenomena, including shifting of attention, priming effect, perceptual reversal, and phd research, circular reaction, and may lead to a better understanding of how these processes are carried out in the human visual system. Compared to homeworl traditional rule-based systems, VISOR shows remarkable robustness of recognition, and is able to discuss in essay writing indicate the confidence of homeworl its analysis as the inputs differ increasingly from the schemas. With such properties, VISOR is a promising first step towards a general vision system that can be used in different applications after learning the application-specific schemas.
Almstrum, Vicki Lynn. Limitations in the Understanding of Mathematical Logic by Novice Computer Science Students. The University of Texas at Austin, Department of Computer Sciences. Report# TR-94-33 (dissertation). September 10, 2003. 183 pages. This research explored the understanding that novice computer science students have of mathematical logic.
Because concepts of logic are at the heart of many areas of computer science, it was hypothesized that a solid understanding of logic would help students grasp basic computer science concepts more quickly and would better prepare them for advanced topics such as formal verification of bowdoin essay supplement program correctness. This exploratory study lays the groundwork for further investigation of this hypothesis. Data for the study were the publicly available versions of the Advanced Placement Examination in Computer Science (APCS examination) and homeworl, files containing anonymous individual responses of students who took these examinations. A content analysis procedure was developed to provide reliable and essay is ailing our national hockey, valid classification of multiple-choice items from the APCS examinations based on the relationship between concepts covered in each item and the concepts of logic. The concepts in the computer science subdomain of logic were clarified by means of a taxonomy developed for use in this study. Thirty-eight experts in computer science education were judges in the content analysis of the multiple-choice items. The judges' ratings provided criteria for grouping items into strongly related and not strongly related partitions. In general, the homeworl, mean proportion of student respondents that correctly answered the supplement, items in a partition was lower for the strongly related than for the not strongly related partition, with a smaller standard deviation.
The difficulty distributions for homeworl the two partitions were shown to and finance be non-homogeneous (p ! .002), with the difficulty distribution for the strongly related partition skewed more towards the very difficult end of the distribution. The results of this study suggest that novice computer science students experience more difficulty with concepts involving mathematical logic than they do, in general, with other concepts in computer science. This indicates a need to improve the way in which novice computer science students learn the concepts of logic. In particular, pre-college preparation in mathematical logic and the content of discrete mathematics courses taken by computer science students need to be scrutinized. Suel, Torsten. Routing and Sorting on Fixed Topologies. Homeworl? The University of Texas at Austin, Department of banking and finance thesis Computer Sciences. Report# TR-94-29 (dissertation). December 1994.
197 pages. This thesis studies the problems of packet routing and sorting on parallel models of computation that are based on a fixed, bounded-degree topology. It establishes lower bounds for several classes of sorting networks and algorithms, and describes techniques and algorithms for packet routing and sorting on mesh-connected and related networks. A lower bound of homeworl Omega(lg n lglg n / lglglg n) is established for the depth of shuffle-unshuffle sorting networks, a class of sorting networks that maps efficiently to the hypercube and its bounded-degree variants. A stronger lower bound of Omega(lg^2 n / lglg n) is shown for a subclass of the shuffle-unshuffle sorting networks whose structure corresponds to the class of ascend and in essay, descend algorithms on the hypercube. These lower bounds also extend to restricted classes of non-oblivious sorting algorithms on hypercubic networks. Homeworl? A lower bound of Omega(n (lg n / lglg n)^2) is shown for the size of Shellsort sorting networks, and for the running time of leadership essay non-oblivious Shellsort algorithms. The lower bound establishes a trade-off between the running time of a Shellsort algorithm and homeworl, the length of the underlying increment sequence. For the problems of permutation routing and sorting on meshes and related networks, a set of proposal marketing techniques is proposed that can be used to convert many randomized algorithms into deterministic algorithms with matching running time and queue size. Homeworl? Applications of these techniques lead to a deterministic algorithm for banking and finance sorting on the two-dimensional mesh that achieves a running time of 2n+o(n), and a fairly simple deterministic algorithm for routing with a running time of 2n+o(n) and homeworl, very small queue size. Some other applications of the techniques are also described.
Finally, the thesis gives algorithms and banking thesis, lower bounds for routing and homeworl, sorting on multi-dimensional meshes and meshes with bus connections. Lee, Wood Wai. A Qualitative Simulation Based Method To Construct Phase Portraits. The University of Texas at Austin, Department of Computer Sciences. Report# AI93-194 (dissertation). January 1993. 235 pages.
Shortcomings of qualitative simulation, and of quantitative simulation, motivate combining them to do simulations exhibiting strengths of essay on what is ailing each. Homeworl? The resulting class of techniques is discuss termed qualitative-quantitative simulation . Qualitative-quantitative simulation is made more challenging-yet more useful- by homeworl, accounting for partial quantitative information. Available quantitative information is often incomplete, so allowing numerical values to be qualified with error terms or tolerances expressed as intervals is banking and finance important. In this research, we demonstrate the combination of qualitative and quantitative simulation in an implemented system called Q3. Q3 utilizes complete or incomplete quantitative information, progressively refining a qualitative simulation in a process that provides increasingly specific numeric predictions. The step size refinement algorithm is homeworl central to Q3. Step size refinement is discussed with respect to three properties often used in analyzing simulation algorithms: correctness of the phd research, inferences, theoretical convergence to the true solution, and stability of solutions when the model parameters and initial conditions are incompletely specified. Q3 has been successfully applied to model based prediction, measurement interpretation diagnosis, and homeworl, finding probabilities of qualitative behaviors. Franke, David Wayne. A Theory of Teleology.
The University of Texas at and finance Austin, Department of homeworl Computer Sciences. Report# AI93-201 (dissertation). Writing A Medical Paper? May 1993. 188 pages. A representation language for teleological descriptions, or descriptions of purpose, is defined.
The teleological language, TeD, expresses the descriptions of purpose in terms of homeworl design modifications that guarantee the satisfaction of design specifications. These specifications express potential behaviors the designed artifact should or should not exhibit. We define an essay on what our national game hockey, abstraction relation on homeworl behavior and implement model checking and classification algorithms that compute this abstraction relation. The model checking algorithm determines whether or not a behavior satisfies a specification. The classification algorithm provides effective indexing of behaviors and teleological descriptions. We implement an acquisition technique for teleological descriptions and demonstrate how teleological descriptions can subsequently be used in diagnosis, explanation, case-based reasoning, design by analogy, and design reuse.
We demonstrate the behavior language, teleology language, acquisition of essay on what our national hockey teleological descriptions, and application of teleological descriptions in explanation, diagnosis, and design reuse via examples in homeworl, the thermal, hydraulic, electrical, and mechanical domains. Essay On What Hockey? We define additional teleological operators that express purposes like prevent, order, synchronize, maintain, and regulate, demonstrating the ability to represent common human-generated descriptions of purpose in TeD. Homeworl? Expressing the purpose of preventing an undesirable behavior is unique to TeD, and is an example of TeD's ability to express purposes regarding missing behaviors and bowdoin essay supplement, components removed from a design. The teleology language developed in this work represents a significant advance over previous work by providing a formal language that 1) is independent of any particular domain of mechanisms or behavior language, 2) can be effectively acquired during the design process, and 3) provides an effective means of classifying and indexing teleological descriptions. Lee, Xiang-Seng.
Temporal and Spatial Analysis in Knowledge-based Physics Problem Solving. The University of Texas at Austin, Department of Computer Sciences. Report# AI93-205 (dissertation). December 1992. 266 pages. Physics problems as stated in textbooks are typically informal and incomplete, and not amenable to the direct application of the general laws of physics. In this dissertation, we present a theory of homeworl analysis for discuss in essay writing automatically solving such problems.
In particular, the theory provides a detailed methodology for homeworl constructing a formal problem representation, called physical representation, upon which physics laws may be appropriately selected and instantiated. In Essay? With the equations generated by these laws, the solutions to these problems are obtained through strictly mathematical manipulations. Homeworl? This theory provides a well-structured domain language, in which it is essay on what our national hockey relatively easy to homeworl state mechanical knowledge and mechanics problems. Discuss Writing? In the language we introduce the notion of basic physical phenomenon for representing the knowledge of physical situations and events. This notion serves as both the building block for the physical representation and homeworl, as a vehicle for accessing the appropriate physical laws.
Both basic physical phenomena and more traditional temporal entities, instants and intervals, may be used as time references. This dual-system representation facilitates bi-level abstractions of time necessary to avoid discontinuities introduced by bowdoin essay supplement, short impulsive phenomena, e.g., collisions, and corresponds well with human-like temporal reasoning. Homeworl? The language also includes an our national game hockey, ontology of space, using multiple abstractions to account for its inherent complexity, and homeworl, representation schemes for leadership essay mckinsey physical laws and equations. The other key ingredient of the theory is a repertoire of ordered knowledge sources, formulated to specify the derivation procedures of a physical representation. The domain language, in which these knowledge sources are written, has a structure which is useful as a theoretical basis for determining their ordering and homeworl, inference step sizes. This practice has proven crucial for building knowledge-based systems that are easy to debug and modify. The theory has been implemented and tested in a computer program which has successfully solved several relatively difficult problems selected from a widely used textbook. Novel methods implemented in the program for intelligently selecting appropriate physics laws and for solving equations are also discussed. DOWNLOAD Available from University Microfilms. Farquhar, Adam. Automated Modeling of Physical Systems in the Presence of Incomplete Knowledge.
The University of Texas at Austin, Department of Computer Sciences. Report# AI93-207 (dissertation). Marketing? September 1993. 149 pages. This dissertation presents an approach to automated reasoning about physical systems in the presence of incomplete knowledge which supports formal analysis, proof of guarantees, has been fully implemented, and applied to substantial domain modeling problems. Predicting and reasoning about the behavior of physical systems is a difficult and homeworl, important task that is essential to everyday common sense reasoning and to complex engineering tasks such as design, monitoring, control, or diagnosis.
A capability for automated modeling and simulation requires - expressiveness to represent incomplete knowledge - algorithms to draw useful inferences about a medical paper non-trivial systems, and homeworl, - precise semantics to support meaningful guarantees of correctness In order to essay mckinsey clarify the structure of the knowledge required for reasoning about the behavior of homeworl physical systems, we distinguish between the model building task which builds a model to describe the system, and the simulation task which uses the model to generate a description of the possible behaviors of the system. This dissertation describes QPC, an implemented approach to writing a medical research paper reasoning about homeworl physical systems that builds on the expressiveness of Qualitative Process Theory [Forbus,1986] and the mathematical rigor of the QSIM qualitative simulation algorithm [Kuipers,1986]. The semantics of QPC's modeling language are grounded in the mathematics of ordinary differential equations and their solutions. This formalization enables the statement and proof of QPC's correctness. If the domain theory is adequate and the initial description of the system is correct, then the actual behavior of the thesis, system must be in the set of possible behaviors QPC predicts. QPC has been successfully applied to problems in Botany and complex examples drawn from Chemical Engineering, as well as numerous smaller problems.
Experience has shown that the modeling language is expressive enough to describe complex domains and that the inference mechanism is powerful enough to homeworl predict the behavior of substantial systems. Bayerdorffer, Bryan Carl. Associative Broadcast and the Communications Semantics of Naming Concurrent Systms. University of Texas at Austin, Department of Computer Sciences. Essay Game Hockey? Report# TR-93-20 (dissertation). November 1993. 207 pages. Much of the homeworl, complexity of bowdoin concurrent program design lies in the specification of patterns of homeworl communication: flows of information among objects (e.g. processes) expressed as functions of the global computation state. Underlying the communication mechanisms of every concurrent system is a naming system, whic is used to leadership mckinsey specify the homeworl, objects participating in each communication. We call those characteristics of naming systems that determine the patterns of communication that can be specified the mckinsey, communication semantics of naming systems.
A more expressive naming system allows communication to be specified at homeworl a higher level of a medical research abstraction. Homeworl? The available communication abstractions are significant in the choice of an algorithm, in which specific patterns of communication are manifest, to solve a particular problem. Thus the bowdoin, choice or design of a naming system often significantly affects the design of concurrent programs. Yet naming systems have not been widely studied as independent components of concurrent systems. This has led to empirical design and inappropriate choices of naming systems, which hinder the homeworl, specification of complex patterns of communication and constrain algorithm design, yielding awkward programs and inefficient executions. In Essay Writing? To simplify the use of naming systems in specifying communication, and to make more precise our understanding of their communication semantics, we adopt a two fold approach: The development of a formal taxonomy of homeworl naming systems, and the design of a specific naming system and bowdoin essay supplement, communication primitive, called Associative Broadcast, that enable straightforward specification of complex communication patterns. The taxonomy defines a set of orthogonal properties that characterize the ability ofnaming systems to express fundamental patterns of communication. Naming systems are classified and homeworl, ranked in a partially ordered hierarchy according to their properties. The hierarchy allows systematic comparison of naming systems, and selection of naming systems for the solution of problems requiring specific properties. Associative Broadcast resides at the top of the essay mckinsey, hierarchy, and allows the specification of a dynamic, descriptively named target set of objects as the destination of a message by defining names to be propositional expressions over sets of object attributes, and by using delayed resolution.
We apply Associative Broadcast to obtain algorithms with desirable symmetry, robustness, concurrency, and efficiency properties for problems in the areas of distributed constraint reduction, database consistency in homeworl, the presence of network partition failures, and virtual time synchronization. Bunda, John D. Instruction Processing Optimization Techniques for VLSI Microprocessors (dissertation). On What Is Ailing Game Hockey? University of homeworl Texas at in essay writing Austin, Department of Computer Sciences. Report# TR-93-19 (dissertation). November 1993.
174 pages. The RISC minimalist paradigm of computer architecture has inspired machines that are straightforward to understand and implement. There has been disagreement as to the precise definition of RISC, and strong results about the relative value of RISC over other architectural approaches are evasive. For the purposes of this thesis, a RISC architecture consists of a general-purpose register file and homeworl, a simple multi-stage pipeline for executing single instructions at a peak rate of one per clock cycle. Even within the writing a medical, parameters of a RISC processor architecture, there remain design decisions that can significantly impact cost and processing performance. This thesis presents an extensive investigation of some of these decisions. A common criticism of RISC machines is homeworl low code density; programs for mckinsey RISC architectures tend to contain more instructions and occupy more physical storage than those for machines with more complex and homeworl, powerful instruction sets. In today's technology, this disadvantage is often mitigated by reduced memory cost, larger scale integration, and the ease of implementing high-speed RISC instruction processors. It is unclear, however, how evolution in technology and processor applications influences this tradeoff; it is prudent to continue examining consequences of popular RISC design choices with respect to these changing parameters. For example, microprocessor clock cycle times are decreasing at a faster rate than memory access times and interconnect speed.
Moreover, as speed and device densities increase, so does the problem of essay on what is ailing our national managing and removal of heat energy from processor chips. Homeworl? All of on what game these factors tend to increase, rather than decrease concern over homeworl the performance and cost penalties of discuss in essay writing low code density. It is natural to ask whether low code density is a necessary penalty for RISC instruction processing performance. Within the framework of a parameterized design for a RISC instruction processor, this thesis presents analysis of these processing performance and energy-efficiency issues through software simulation. Yu, Yuan. Automated Proofs of Object Code For a Widely Used Microprocessor. University of Texas at Austin, Department of Computer Sciences. Report# TR-93-09 (dissertation). 734 pages. Computing devices can be specified and studied mathematically. Formal specification of computing devices has many advantages -- it provides a precise characterization of the computational model and homeworl, allows for mathematical reasoning about writing a medical paper models of the computing devices and programs executed on them.
While there has been a large body of research on homeworl program proving, work has almost exclusively focused on programs written in writing a medical research paper, high level programming languages. This thesis addresses the very important but largely ignored problem of machine code program proving. In this thesis we have formally described a substantial subset of the MC68020, a widely used microprocessor built by Motorola, within the mathematical logic of the automated reasoning system Nqthm, a.k.a. the Boyer-Moore Theorem Proving System. Based on this formal model, we have mechanized a mathematical theory to facilitate automated reasoning about object code programs. We then have mechanically checked the correctness of MC68020 object code programs for binary search, Hoare's Quick Sort, the Berkeley Unix C string library, and other well-known algorithms. The object code for these examples was generated using the Gnu C, the homeworl, Verdix Ada, and the AKCL Common Lisp compilers.
Jain, Ravi. Scheduling Data Transfers in Parallel Computers and supplement, Communications Systems. University of Texas at homeworl Austin, Department of a medical research Computer Sciences. Report# TR-93-03 (dissertation). February 1993.
225 pages. The performance of homeworl many applications of parallel computers and essay on what our national hockey, communications systems is limited by the speed of data transfers rather than the speed of processing. An important, but neglected, aspect of homeworl resource management to overcome this bottleneck is the essay on what our national game hockey, scheduling of homeworl data transfers. Data transfer scheduling differs from traditional scheduling problems in that data transfer tasks require multiple resources simultaneously, rather than a single resource serially, in order to execute. We study the data transfer scheduling problem by first defining a general model for precisely specifying and classifying scheduling problems.
We use the model for the recognition of the similarity of seemingly different problems from different application areas, for the systematic transformation of one problem specification into that of a seemingly different problem, and for the systematic decomposition of a problem specification into solvable subproblems. We obtain polynomial-time, optimal and approximate algorithms for a wide range of banking data transfer scheduling problems under a variety of architectural and logical constraints, including communication architectures in which resources are fully connected, communication architectures with a tree topology, and the presence of mutual exclusion and precedence constraints. Our algorithms either generalize previous results for these problems, or provide better performance, or both. Our results are applicable to homeworl both parallel computers and communications systems, including certain types of shared-bus multiprocessor systems such as the and finance, Sequent and the IBM RP3, hierarchical switching systems, tree-structured multiprocessor architectures, and homeworl, intersatellite communications systems. Ng, Hwee Tou. A General Abductive System with Application to Plan Recognition and Diagnosis. The University of and finance Texas at Austin, Department of Computer Sciences.
Report# AI92-177 (dissertation). June 1992. 145 pages. A diverse set of intelligent activities, including natural language understanding, diagnosis, and scientific theory formation, requires the ability to construct explanations for observed phenomena. In this thesis, we view explanation as abduction, where an abduction explanation is a consistent set of homeworl assumptions which, together with background knowledge, logically entails a set of observations.
Richards, Bradley Lance. An Operator-Based Approach to First-Order Theory Revision. Bowdoin Essay Supplement? The University of Texas at Austin, Department of Computer Sciences. Homeworl? Report# AI92-181 (dissertation). August 1992. 178 pages. This thesis presents a system, FORTE (First-Order Revision of Theories from Examples), that performs theory revision in discuss writing, first-order domains. Moving to a first-order representation creates many new challenges, such as argument selection and recursion. Homeworl? but it also opens many new application areas, such as logic programming and qualitative modelling, that are beyond the reach of propositional systems. FORTE uses a hill-climbing approach to revise theories. It identifies possible errors in the theory and calls on leadership essay a library of operators to develop possible revisions.
The best revision is homeworl implemented, and writing, the process repeats until no further revisions are possible. Operators are drawn from a variety of sources, including propositional theory revision, first-order induction, and inverse resolutions. FORTE has been tested in a wide variety of domains. The thesis includes results from standard machine-learning domains, logic programming, qualitative model building, and grammar acquisition. Acker, Liane. Access Methods for Large, Multifunctional Knowledge Bases.
The University of Texas at Austin, Department of homeworl Computer Sciences. Report# AI92-183 (dissertation). In Essay Writing? August 1992. 147 pages. The goal of this research is to develop methods for representing and homeworl, accessing knowledge to support multiple tasks. The goals of the research are threefold. Phd Research Proposal Marketing? The first goal is to develop an expressive and convenient frame-based language for representing domain knowledge so that it can be applied to multiple tasks. Homeworl? A single comprehensive, fine grained representation of domain knowledge that can support a variety of applications is discuss in essay writing more flexible and cost-effective than several special purpose knowledge bases. The second goal of the research is to make users of a knowledge base less dependent on the particulars of how knowledge is represented. This is achieved by providing a content addressable knowledge base and by providing access to concepts in the virtual knowledge base.
Users can access frames in the knowledge base by description as well as by name, regardless of whether they exist explicitly or implicitly in the knowledge base. The third goal of the research is to develop computational methods for accessing from a knowledge base coherent portions of knowledge about a given concept (called viewpoints of concepts). Viewpoints are essential for a variety of tasks, including explanation generation, compositional modeling, problem solving, and machine learning. This research identifies several types of viewpoints and homeworl, develops methods for constructing viewpoints of each type. Evaluation suggests that the viewpoints generated by these methods are comparable in coherence to human- generated viewpoints. Turpin, Russell.
Programming Data Structures in Logic. Essay Mckinsey? University of Texas at Austin, Department of Computer Sciences. Report# TR-92-44 (dissertation). December 1992. 170 pages. Current programming languages that are grounded in a formal logic -- such as pure Lisp (based on homeworl the lambda calculus) and Prolog (based on Horn clause logic) -- do not support the use of complex, pointer-based data structures. The lack of this important feature in logically grounded languages contrasts sharply with its strong support in the imperative programming languages that have enjoyed wide application, of which C is paper a prime example. Unfortunately, the formal methods for reasoning about imperative languages have not proved broadly useful for reasoning about programs that manipulate complex, pointer-based data structures. Between these two camps resides an homeworl, open question: How can we verify programs involving complex, pointer-based data structures? This work gives an answer to this question. It describes a programming language in which a programmer can define logical predicates on phd research proposal data structures and pointers, and use these predicates to specify programs that manipulate complex, pointer-based data structures.
These programs may dynamically allocate memory and destructively modify their arguments. This solution is homeworl grounded in two theoretical advances. (1) This work develops a first-order logic for data structures that formalizes the notions that are necessary for defining and reasoning about relationships between data structures, including notions such as the address of a data structure, pointer reference, reachability via pointer reference, and data structure overlap. (2) This work provides a compilation algorithm, based on a calculus of procedure composition, that generates procedural code from a program specified in the logic. Compilation is in research, the style of automatic programming, and relies on homeworl the programmer, using theorem proving tools, to verify assertions in the logic that are generated by the compilation algorithm. Kuo, Chin-Ming. Parallel Execution of Production Systems. University of discuss in essay writing Texas at Austin, Department of Computer Sciences.
Report# TR-92-42 (dissertation). November 1992. 152 pages. The production system or rule-based system paradigm is a widely used form of building expert systems or artificial intelligence applications involving knowledge representation and knowledge base search. As the complexity and homeworl, size of expert system applications expand, parallelizing production systems becomes an attractive approach in attempts to speedup the executions. Previous attempts at parallel structuring of rule-based programs have failed to achieve desired levels of parallelism. This research is a comprehensive approach to the parallelization of rule-based programs. The structure of the proposal, productions systems is examined and static analysis techniques are developed.
Several sources of run-time parallelism are developed to restructure the cases where the dynamic behaviors of the systems can not be detected by the compile-time analysis. We propose a new production system language (CREL), suitable for parallel implementation, to allow asynchronous execution. Staskauskas, Mark G. Homeworl? Specification and Verification of Large-Scale Reactive Programs. University of Texas at Austin, Department of Computer Sciences. Report# TR-92-34 (dissertation). August 1992. 192 pages. Research Paper? The UNITY methodology has attracted wide attention because of its elegant logic for specifying and reasoning about concurrent programs. However, the UNITY examples tackled so far are much smaller in homeworl, scale than the problems typically encountered in on what is ailing, practice. The goal of this dissertation is the identification of extensions to UNITY that will enable it to be applied to significantly larger problems. To explore possible extensions, we have applied UNITY to three large-scale examples drawn from industrial applications: the I/O subsystem portion of the GCOS operating system; a distributed electronic funds-transfer system; and a telephone-switching system.
Hayashi, Akira. Geometrical Motion Planning for Highly Redundant Manipulators Using a Continuous Model. The University of Texas at Austin, Department of Computer Sciences. Report# AI91-156 (dissertation). March 1991. 156 pages. There is a need for highly redundant manipulators to work in complex, cluttered environments.
Our goal is to plan paths for homeworl such manipulators efficiently. The path planning problem has been shown to be PSPACE-complete in terms of the number of leadership essay degrees of freedom (DOF) of the homeworl, manipulator. Thesis? We present a method which overcomes the complexity with a strong heuristic: utilizing redundancy by means of a continuous manipulator model. The continuous model allows us to change the complexity of the problem from a function of both the DOF of the manipulator (believed to be exponential) and the complexity of the environment (polynomial), to a polynomial function of the complexity of the environment only. The power of the continuous model comes from the ability to decompose the manipulator into segments, with the number, size, and homeworl, boundaries of the segments, varying smoothly and dynamically. First, we develop motion schemas for the individual segments to achieve a basic set of goals in leadership essay mckinsey, open and cluttered space.
Second, we plan a smooth trajectory through free space for a point robot with a maximum curvature constraint. Third, the path generates a set of position subgoals for homeworl the continuous manipulator which are achieved by the basic motion schemas. Fourth, the discuss writing, mapping from the homeworl, continuous model to an available jointed arm provides the writing, curvature bound and obstacle envelopes required (in step 2) to guarantee a collision-free path. The validity of the continuous model approach is also supported by an extensive simulation which we performed. While the simulation has been performed in homeworl, 2-D, we show a natural extension to 3-D for each technique we have implemented for the 2-D simulation. Hartman, John. Automatic Control Understanding for Natural Programs. The University of Texas at Austin, Department of Computer Sciences. Report# AI-91-161 (dissertation). May 1991. 227 pages.
Program understanding involves recognizing abstract concepts like read-process loop in existing programs. Programmers spend much of their time understanding programs, so studying and essay supplement, automating the homeworl, process has many benefits. Programming plans are units of programming knowledge connecting abstract concepts and their implementations. Discuss Writing? Existing research assumes that plan instances can be recognized to recover the programmer's abstract concepts and intentions, but this approach has not been confirmed empirically. We present a practical method for bottom-up control concept recognition in large, unstructured imperative programs. Control concepts are abstract notions about interactions between control flow, data flow and computation, such as do loop, read process loop, and bounded linear search. They are recognized by comparing an abstract program representation against a library of standard implementation plans. The program representation is a hierarchical control flow/data flow graph decomposed into a tree of sub-models using propers (single entry/exit control flow sub-graphs).
Plans are represented by similar graphs with added qualifications. Recognition is homeworl based on simple matching between sub-models and leadership, plans. The method was implemented in the UNPROG program understander and homeworl, tested with Cobol and Lisp source programs. Research Paper? This method is robust, efficient, and scalable. The program representation can be formed for homeworl all language constructs which permit static determination of control and data flow. Comparing sub- models and comparisons increases linearly with program size. UNPROG has been applied to automatic Cobol restructuring. Knowledge associated with plans and concepts permits more specific and essay our national, insightful transformation, code generation, and documentation than is possible with syntactic methods. Control understanding can similarly raise the level of other reverse engineering and re-engineering tools for applications like analysis, documentation, and homeworl, translation.
We also showed how our method and UNPROG can be used for in essay empirical study of programs at the conceptual level. Results can be used to improve recognizer performance, acquire plans, catalog natural plans and concepts, test the hypothesis that programs are planful, and homeworl, characterize program populations. Throop, David Rutherford. Model-Based Diagnosis of Complex, Continuous Mechanisms. The University of leadership Texas at Austin, Department of Computer Sciences. Report# AI91-162 (dissertation).
August 1991. 135 pages. In diagnosis, when a hypothesis proposes a variable's value, several different lines of evidence may be considered; the different evidence must be arbitrated. The result of this arbitration consists of a single best estimate of the variable value and of a measure of that estimate's plausibility. The plausibility measure reflects the degree of agreement among the lines of evidence.
This report describes HEATX, a program for homeworl model-based diagnosis of non-linear mechanisms with continuous variables. Previous work in model-based diagnosis has avoided arbitrating numeric evidence, often by representing continuous variables as discrete symbols (e.g., high, cold). Such restricted representation have had difficulty in diagnosing mechanisms with feedback or reconvergent fanout. HEATX represents numerical data explicitly in the hypotheses and in leadership mckinsey, the inferencing procedures; it is thereby able to arbitrate evidence numerically. HEATX uses both nonlinear numerical simulations and approximate linear models to perform diagnosis in homeworl, the domain of heat-exchanger networks. The response of these networks to changes in their inputs is nonlinear; the networks also have feedback and reconvergent fanout. A Medical? This dissertation introduces several novel techniques for homeworl diagnosing such networks. It interleaves the generation of complete fault hypotheses with several tests on partially formed hypotheses. Two of these tests are the qualitative filter and the clustering filter.
The qualitative filter analyzes the signs of gains between fault and symptom variables. The clustering filter constructs linear approximations to individual components and assembles these into a linear model of the network. It then uses the and finance, linear model to assess the consistency of a hypothesis. It does so by determining whether there is homeworl a value for the candidate fault variable which is consistent with the quantitative values of the symptom variables; the degree of bowdoin agreement between the symptoms and best value for the fault variable is homeworl used to proposal score the homeworl, hypothesis. This filter is extended to multi-fault diagnosis, in which values for several fault variable may be estimated and paper, judged simultaneously. Berleant, Jared Daniel. The Use of Partial Quantitative Information with Qualitative Reasoning. Homeworl? The University of Texas at Austin, Department of Computer Sciences. Report# AI91-163 (dissertation).
August 1991. Research? 131 pages. There is a need for combining qualitative and quantitative simulations, to do simulation tasks that would be difficult using either alone. This task is made more difficult by the fact that available quantitative information may be incomplete, bounding values with intervals or describing them with probability distribution functions. This research demonstrates the combination of qualitative and quantitative simulation in an implemented system, Q3. Q3 utilizes partial or complete quantitative information, to gradually refine a qualitative simulation into homeworl a simulation that has properties and advantages of both qualitative simulations and quantitative ones. The technique exemplified by Q3 is shown to possess properties often used in analyzing both qualitative and a medical research paper, quantitative simulators. Qualitative and quantitative inferences are correct. Theoretical convergence to the true solution and stability in the presence of homeworl partial model inputs are also shown.
Q3 has been applied to the problem of finding probabilities of phd research marketing qualitative behaviors, an important problem. Partial quantitative characterization of model inputs, in the form of intervals and homeworl, probability distributions, may be used to bound the probabilities of different behaviors. This is demonstrated for simple models including one in essay mckinsey, the dependability analysis application domain. Ourston, Dirk. Using Explanation-Based and homeworl, Empirical Methods in Theory Revision. The University of Texas at Austin, Department of Computer Sciences. Report# AI91-164 (dissertation). Bowdoin Essay Supplement? August 1991.
125 pages. Homeworl? The knowledge acquisition problem is a continuing problem in expert system development. The knowledge base (domain theory) initially formulated by the expert is usually only an approximation to the correct theory for the application domain. This initial knowledge base must be refined (usually manually) as problems are discovered. This research addresses the knowledge base refinement problem for classification tasks. The research provides an automatic method for correcting a domain theory in the light of and finance incorrect performance on a set of training examples. The method uses attempted explanations to homeworl focus the correction on the failing part of the knowledge base. It then uses induction to supply a correction to the knowledge base that will render it consistent with the training examples. Using this technique, it is in essay writing possible to correct overly general and homeworl, overly specific theories, theories with multiple faults at various levels in the theory hierarchy, and mckinsey, theories involving multiple concepts. Methods have been developed for making corrections even in the presence of noisy data.
Theoretical justification for the method is given in the form of convergence results that predict that the method will eventually converge to a hypothesis that is within a small error of the correct hypothesis, given sufficient examples. Because the technique currently relies on homeworl theorem proving for bowdoin much of the analysis, it is quite expensive to computationally and heuristic methods for reducing the computational burden have been implemented. The system developed as part of the research is called EITHER (Explanation-based Inductive THeory Extension and Revision). EITHER uses propositional Horn clause logic as its knowledge representation, with examples expressed as attribute-value lists. Homeworl? The system has been tested in a variety of domains including revising a theory for discuss writing the identification of promoters in DNA sequences and a theory for soybean disease diagnosis, where it has been shown to outperform a purely inductive approach. Campbell III, A. T. Modeling Global Diffuse Illumination for homeworl Image Synthesis. And Finance Thesis? University of homeworl Texas at Austin, Department of Computer Sciences. Marketing? Report# TR-91-39 (dissertation). December 1991. 155 pages.
Rapid developments in the design of homeworl algorithms for rendering globally illuminated scenes have taken place in the past five years. Net energy methods such as radiosity algorithms have become effective at computing the energy balance for scenes containing diffusely reflecting objects. Writing A Medical? Such methods first break up a scene description into a large set of elements, or possibly several levels of elements. Energy transfers among these elements are then determined using a variety of homeworl means. While much progress has been made in the design of energy transfer algorithms, little or no attention has been paid to writing a medical the proper generation of the mesh of surface elements. This dissertation presents a technique for adaptively creating a mesh of surface elements as the energy transfers are computed. The method allows large numbers of small elements to be placed at parts of the scene where the most active energy transfers occur without requiring that other parts of the scene be subdivided needlessly to the same degree. As a result, the computational effort in the energy transfer computations can be concentrated where it has the most effect. Since the sources of direct and indirect illumination in the scene are polygonal elements, the effects of light sources with finite area must be computed.
Most methods simplify the problem by approximating the area source with a collection of point sources. We present an object space algorithm to model illumination from polygonal light sources analytically. The result is a collection of smooth-shaded polygonal facets that may be rendered from any viewing position. Homeworl? Binary Space Partitioning trees are used to compute umbra and penumbra boundaries efficiently. Fast analytic techniques are developed for illumination calculations. Numerical optimization methods ensure that the shading function is sampled finely enough to find all significant illumination gradations. Illumination calculations are optimized to concentrate computational effort on and finance parts of the scene where they are most needed. Aahlad, Yeturu.
Balanced Sequencing Protocols. University of Texas at Austin, Department of Computer Sciences. Homeworl? Report# TR-91-34 (dissertation). November 1991. 122 pages.
The protocol used to control the sequence of execution of events of a distributed computation has a significant impact on its performance. Most of the proposed protocols are pessimistic in the sense that when the available information is not sufficient to determine the correctness of executing an event, that event will be delayed until such information is available. Others have proposed optimistic protocols which, in such situations, proceed to execute the event. When the necessary information becomes available, if it turns out writing a medical, that the event should not have been executed, the protocol takes appropriate action to recover from the mistake. This research addresses ways to strike an appropriate balance between the homeworl, extremes of optimism and and finance, pessimism in a sequencing protocol and evaluates the benefits of homeworl doing so. The term Balanced Sequencing Protocol refers to a medical research paper protocols whose degree of optimism can be varied across a spectrum of possibilities ranging from optimistic to homeworl pessimistic by essay is ailing hockey, tuning one or more parameters of the protocol. Two approaches are employed in the investigation: (1) a general protocol for sequencing any program at any specified level of optimism, and (2) balanced sequencing protocols specialized for some common distributed computing primitives and paradigms, namely, producer-consumer, distributed semaphores and homeworl, distributed locking. For these specialized protocols, the range of circumstances where balanced protocols do better than both extremes and the optimal balance are analytically determined. A model of distributed databases used in a previously published simulation experiment is studied, and balanced locking is demonstrated to perform better than conventional locking when recovery cost is less than 20 message delays. Essay Mckinsey? During the course of this research, a previously unknown phenomenon which can cause the performance of optimistic protocols to degrade over time was identified, and its effects were quantified for a simple system. Homeworl? A solution to this problem based on balanced sequencing is leadership proposed.
Levy, Eliezer. Semantics-Based Recovery in Transaction Management Systems. Homeworl? University of Texas at Austin, Department of Computer Sciences. A Medical? Report# TR-91-29 (dissertation). August 1991. 89 pages. A cornerstone of the transaction paradigm is the notion of atomicity. The principle that forms the basis for homeworl obtaining transaction atomicity in most contemporary database systems is to prohibit transactions from accessing uncommitted data. There is a large range of database environments for which this standard approach to transaction atomicity is excessively restrictive and even not appropriate. Banking? A method that allows exposing uncommitted data, yet preserves transaction atomicity without inducing cascading aborts is highly desirable. Such a method would alleviate performance problems related to long-duration and distributed transaction management, and would provide critical functionality for enterprises based on cooperative transactions.
This dissertation focuses on semantic recovery as the requisite method. Semantic undoing, referred to as compensation, is homeworl carried out by a compensating transaction which is phd research proposal associated with a specific forward transaction. A compensating transaction faces the intricate task of homeworl undoing its forward transaction while obliterating the effects of other transactions to a minimal extent and bowdoin, preserving data consistency. Only with the homeworl, aid of the specific semantics of the application at hand can this task be accomplished. Compensation, and semantic recovery in general, can be utilized in proposal marketing, the realm of distributed transaction management systems. Supporting atomicity of multi-site transactions in a distributed system is equated with long-duration delays, blocking, and loss of the homeworl, local autonomy of the individual sites. The two-phase commit protocol embodies these deficiencies.
These hard problems can be alleviated by employing semantic recovery, and by trading standard all-or-nothing atomicity for a weaker notion of essay on what our national game hockey relaxed atomicity. Facing the relevant impossibility results in distributed computing, this new direction is homeworl well justified. Relaxed atomicity is characterized by an asynchronous process of banking and finance thesis recovery from homeworl decentralized and uncoordinated local decisions as to whether to commit or abort a multi-site transaction. This recovery process finally leads to a unanimous outcome. Relaxing standard atomicity interacts in a subtle way with correctness and concurrency control issues. Accordingly, a correctness criterion is bowdoin essay supplement proposed and homeworl, protocols that satisfy this criterion are presented. The results on relaxed atomicity are of particular importance for heterogeneous distributed databases, where the local autonomy of the integrated systems cannot be compromised. Cheng, Albert Mo Kim. Analysis and Synthesis of Real-Time Rule-Based Decision Systems. University of Texas at a medical paper Austin, Department of Computer Sciences.
Report# TR-91-14 (dissertation). April 1991. 284 pages. Real-time decision systems (RTDS's) are computer-controlled systems that must react to events in the external environment by performing decision-intensive computation sufficiently fast to meet specified timing and safety constraints. This dissertation investigates a class of these systems where decisions are computed by an equational rule-based program. Two fundamental problems are identified: (1) the analysis of rule-based RTDS's in order to homeworl verify that the specified timing and hockey, safety properties are satisfied prior to their execution, and (2) the synthesis of rule-based RTDS's that are guaranteed to meet the specified timing constraints in addition to the safety constraints. Two complementary approaches have been developed to solve the first problem: (1) model checking of the global state transition graph representing the program, and homeworl, (2) static analysis of the program. These approaches are combined to form the leadership mckinsey, cornerstone of the General Iterative Analysis Algorithm.
The applicability of this analysis technique is further enhanced by the development of a facility with which the homeworl, rule-based programmer can specify domain-specific knowledge in the language Estella in order to validate the performance of an even wider range of programs. Two approaches also have been identified to in essay writing tackle the second problem: (1) transforming the given equational rule-based program by homeworl, adding, deleting, and/or modifying rules, and supplement, (2) optimizing the scheduler to select the rules to fire such that the variables in the program will always converge to stable values within the homeworl, response time constraint. Banking? The complexity and size of real-time decision systems often necessitates the homeworl, use of computer-aided design tools. This dissertation describes a suite of analysis tools based on our theoretical framework which have been implemented to ensure that equational rule-based programs written in the language EQL can indeed meet their specified timing constraints. Haruyama, Nick Shinichiro.
New Routing Strategies for VLSI. University of Texas at Austin, Department of Computer Sciences. Report# TR-91-02 (dissertation). December 1990. 158 pages.
This report describes two methods of routing for VLSI layout: one method for channel routing and another method for power wire routing. Our two-layer channel router is designed to find solutions which minimize both wiring area and number of vias simultaneously. Our method, called topological channel routing, analyzes the phd research, topological relationship of wires before the homeworl, wires are mapped onto the channel. A unique layout design rule called an interleaving mesh is used. The interleaving mesh prohibits long wires on one layer from overlapping with wires on the other layer, thus has smaller cross talks of signals because of smaller capacitive couplings between those wires on different layers. Experimental results show that the algorithm generates very good solutions. For example, we have obtained a height of 41 for the famous Deutsch's Difficult Example without any parallel overlaps of wires and bowdoin, simultaneously a via count of 186, which is one of the best results ever reported in the literature.
Our power router finds non-crossing VDD and GND trees on one layer using a small metal area. The solution is obtained under the constraints of metal migration and voltage drop. Experimental results show that the power wire area is considerably smaller than a previously developed method for single-layer routing. Byun, Yung-Tai. Spatial Learning Mobile Robots with a Spatial Semantic Hierarchical Model. The University of Texas at Austin, Department of Computer Sciences. Report# AI90-121 (dissertation). January 1990.
235 pages. The goal of homeworl this dissertation is to and finance thesis develop a spatial exploration and map-learning strategy for a mobile robot to use in homeworl, unknown, large-scale environments. Traditional approaches aim at building purely metrically accurate maps. Because of sensorimotor errors, it is hard to essay on what is ailing our national construct accurately such maps. However, in spite of sensory and computation limitation, humans explore environments, build cognitive maps from exploration, and homeworl, successfully path-plan, navigate, and place-find. Based on leadership mckinsey the study of homeworl human cognitive maps, we develop a spatial semantic hierarchical model to replace the global absolute coordinate frame used in traditional approaches. Essay On What Is Ailing Game? The semantic hierarchical model consists of three levels: control level, topological level, and geometrical level. The topological level provides the basic structure of the hierarchy.
At the control level, a robot finds places or follows travel edges which can be described by homeworl, qualitatively definable features. The distinctive features allow development of distinctiveness measures. The robot uses these measures to find, with negative feedback control, the distinctive places by hill-climbing search algorithms, and the travel edges by edge-following algorithms. Distinctive places and travel edges are connected to build a topological model. This model is created prior to the construction of writing a medical paper a global geometrical map. Cumulative location error is essentially eliminated while traveling among distinctive places and travel edges by alternating between the hill-climbing search control algorithms and the edge-following control algorithms. On top of the topological model, metrical information is accumulated first locally and then globally. Homeworl? Using a simulation package with a robot instance, NX, we demonstrate the robustness of our method against sensorimotor errors. In Essay? The control knowledge for homeworl distinctive places and travel edges, the topological matching process, and the metrical matching process with local geometry make our approach robust in the face of on what metrical errors. In addition to robust navigation at homeworl the control and essay on what is ailing hockey, topological levels, our framework can incorporate certain metrically-based methods and thus provide the best of both approaches. Hermjakob, Ph.D., Ulf.
Access-Limited Logic -- A Language for homeworl Knowledge Representation. The University of writing a medical research Texas at homeworl Austin, Department of Computer Sciences. Report# AI90-141 (dissertation). October 1990. 237 pages. Access-Limited Logic (ALL) is a language for knowledge representation which formalizes the access limitations inherent in a network structured knowledge-base. Where a deductive method such as resolution would retrieve all assertions that satisfy a given pattern, an access-limited logic retrieves all assertions reachable by following an available access path. The time complexity of inference is thus a polynomial function of the size of the proposal, accessible portion of the knowledge- base, rather than the size of the homeworl, entire knowledge-base. Access-Limited Logic, though incomplete, still has a well defined semantics and a weakened form of completeness, Socratic Completeness, which guarantees that for any query which is a logical consequence of the knowledge-base, there exists a series of queries after which the original query will succeed. We have implemented ALL in Lisp and it has been used to build several non-trivial systems, including versions of Qualitative Process Theory and Pearl's probability networks. ALL is a step toward providing the thesis, properties - clean semantics, efficient inference, expressive power - which will be necessary to build large, effective knowledge bases.
Blumenthal, Brad Brand. Applying Design Replay to the Domain of Metaphoric Human Interface Design. The University of Texas at Austin, Department of Computer Sciences. Report# AI90-145 (dissertation). December 1990. 126 pages. This research focuses on the development of an algorithm for homeworl recording the proposal, experience of an automated design system and reusing that experience to improve the performance of the design system on subsequent design episodes.
This new design replay algorithm has been implemented in homeworl, the REMAID system, applied to supplement the domain of homeworl automated human interface design, and empirically tested against implementations of other approaches to design replay presented in the literature. The success of the REMAID design replay technique is based on two fundamentally new approaches. First, REMAID effectively interleaves design replay with generic automated design by phd research proposal marketing, recognizing and intelligently adapting to various kinds of mismatches between the recorded experience and the current episode. These mismatches, called pretours, detours, and combinations, are identified, and methods for recognizing and adapting to them are described. The second approach used by the REMAID algorithm is to reuse the reasoning involved in producing a design, rather than just the choices. This is implemented by recording and reusing the heuristics used to produce a design, rather than simply recording the goals that were addressed. In particular, the heuristics that were used to order subgoals in a design are recorded and reused. The design system that REMAID is applied to is called MAID and homeworl, automatically produces human interface designs for writing paper a computer application when given a specification of the homeworl, functionality of that application.
In addition to proposal marketing serving as the homeworl, test domain for REMAID, MAID advanced the state of the art in automated human interface design by implementing a representation and an algorithm that automatically incorporates characteristics from banking and finance real world objects into interface designs. MAID creates such metaphoric interface designs by homeworl, importing appearances, new objects and other features suggested by phd research marketing, the real-world entity. MAID has been used to design nine different interfaces to two different applications. Branting, Karl. Integrating Rules and Precedents for Classification and Explanation: Automating Legal Analysis. The University of homeworl Texas at Austin, Department of Computer Sciences. Report# AI90-146 (dissertation). December 1990.
159 pages. The goal of this research is to develop a model for problem solving that integrates general rules with specific examples. Developing such a model is important because neither rules nor examples, standing alone, are sufficient for problem solving in many important domains. Few areas of human expertise are so well understood that problem solving is reducible to deduction from general principles. Similarly, there are few domains in which experience is so extensive that every new problem precisely matches a previous problem whose solution is known. When neither rules nor examples are individually sufficient, problem-solving expertise depends on essay is ailing our national hockey integrating both. Legal analysis typifies a task in which problem solving depends upon both an incomplete general theory and examples. A lawyer familiar only with the literal text of legal rules but ignorant of any examples of homeworl their use would be critically handicapped in phd research proposal marketing, the tasks of making, anticipating, and homeworl, evaluating arguments. Much of the expertise of an experienced lawyer comes not from paper knowledge of legal rules themselves, but from familiarity with examples of the use of rules for homeworl argumentation, planning, and adjudication. The dependence of proposal marketing expert performance in law on both rules and examples makes law an ideal domain for illustrating and evaluating models for integrating general and specific knowledge sources.
Iscoe, Neil Allen. Domain-specific Programming: an homeworl, Object-Oriented and Knowledge-Based Approach to Specification and Generation. Discuss? University of homeworl Texas at Austin, Department of Computer Sciences. Essay Is Ailing Our National Hockey? Report# TR-90-37 (dissertation). November 1990.
154 pages. Programmers must have an understanding of both programming knowledge and homeworl, application domain knowledge to write application programs. But while programming is well enough understood to model and teach, application domain knowledge is not yet well understood, and and finance thesis, is codified only in an informal ad hoc manner. Because representations that precisely characterize application domain knowledge do not currently exist, errors are frequently made when gathering and mapping specifications from the informal to the formal. This dissertation defines a meta-model for application domain knowledge and homeworl, describes a methodology for its instantiation into domain-specific models. Domain models are representations of application domains that can be used for a variety of operational goals in support of specific software engineering tasks or processes. The meta-model and methodology in this dissertation facilitate understanding and analyzing application areas and eliciting and in essay, formalizing software requirements and homeworl, specifications. The emphasis is on general characterization techniques that can be used to instantiate models from different application domains.
Menon, Vinod. Dynamic Aspects of Signaling in Distributed Neural Systems. University of discuss writing Texas at Austin, Department of Computer Sciences. Report# TR-90-36 (dissertation). Homeworl? November 1990.
162 pages. A distributed neural system consists of localized populations of neurons - neuronal groups - linked by massive reciprocal connections. Signaling between neuronal groups forms the basis of functioning of such a system. In this thesis, fundamental aspects of signaling are investigated mathematically with particular emphasis on the architecture and proposal marketing, temporal self-organizing features of distributed neural systems. Coherent population oscillations, driven by exogenous and endogenous events, serve as autonomous timing mechanisms and are the basis of one possible mechanism of signaling. The theoretical analysis has, therefore, concentrated on a detailed study of the homeworl, origin and frequency-amplitude-phase characteristics of the oscillations and the emergent features of inter-group reentrant signaling. It is shown that a phase shift between the excitatory and inhibitory components of the interacting intra-neuronal-group signals underlies the a medical, generation of oscillations. Such a phase shift is readily induced by delayed inhibition or slowly decaying inhibition. Theoretical analysis shows that a large dynamic frequency-amplitude range is homeworl possible by varying the time course of the inhibitory signal. Reentrant signaling between two groups is shown to give rise to synchronization, desynchronization, and essay, resynchronization (with a large jump in frequency and homeworl, phase difference) of the oscillatory activity as the latency of the reentrant signal is paper varied.
We propose that this phenomenon represents a correlation dependent non-Boolean switching mechanism. A study of triadic neuronal group interactions reveals topological effects - the homeworl, existence of stabilizing (closed loop) and destabilizing (open loop) circuits. Leadership Essay? The analysis indicates (1) the metastable nature of signaling, (2) the existence of time windows in which correlated and uncorrelated activity can take place, and homeworl, (3) dynamic frequency-amplitude-phase modulation of oscillations. By varying the latencies, and hence the relative phases of the reentrant signals, it is possible to dynamically and selectively modulate the cross-correlation between coactive neuronal groups in a manner that reflects the mapping topology as well as the intrinsic neuronal circuit properties. These mechanisms, we argue, provide dynamic linkage between neuronal groups thereby enabling the distributed neural system to operate in a highly parallel manner without clocks, algorithms, and central control.
Deshpande, Sanjay R. A Theory for Automated Synthesis of Architectures for Repetitive Multi-Rate Algorithms. University of Texas at Austin, Department of Computer Sciences. Report# TR-90-28 (dissertation). August 1990. 230 pages. A theoretical framework is developed to a medical research achieve automated architectural synthesis for homeworl data-independent, repetitive, multi-rate algorithms from their behavioral specifications.
Multi-rate functions are formally defined. It is shown that systolic architectures for algorithms incorporating multi-rate functions make inefficient use of essay mckinsey hardware components and that a multi-clock design style can produce more efficient architectures. A graph-oriented language, called Data Dependency Graphs (DDGs), is homeworl introduced to facilitate the specification of multi-rate computations. Computational semantics suitable for multi-rate computations are associated with the nodes and edges of the DDG. A compatible model for function execution by hardware components is proposed. A bus-based architectural scheme is also proposed.
The synthesis process is leadership mckinsey seen as translation from DDGs to architectures. Analytic techniques are introduced to extract design information from the DDGs. Synthesis problems are formulated, and heuristic approaches are suggested for their solution. An implementation of a heuristic synthesis system is described. The implementation is homeworl evaluated via experiments. Bulko, William Charles. Understanding Coreference in a System for Solving Physics Word Problems(Ph.D. Writing Research? Dissertation). The University of homeworl Texas at Austin, Department of Computer Sciences. Proposal Marketing? Report# AI89-102 (dissertation).
May 1989. 197 pages. In this thesis, a computer program (BEATRIX) is presented which takes as input an English statement of a physics problem and homeworl, a figure associated with it, understands the two kinds of essay on what our national input in homeworl, combination, and produces a data structure containing a model of the physical objects described and the relationships between them. BEATRIX provides a mouse-based graphic interface with which the user sketches a picture and research, enters English sentences; meanwhile, BEATRIX creates a neutral internal representation of the picture similar to that which might be produced as the homeworl, output of a vision system. It then parses the text and the picture representation, resolves the references between objects common to the two data sources, and produces a unified model of the problem world. The correctness and completeness of this model has been validated by applying it as input to a physics problem-solving program currently under development. Two descriptions of a world are said to be coreferent when they contain references to overlapping sets of objects. Resolving coreferences to produce a correct world model is leadership a common task in homeworl, scientific and phd research proposal, industrial problem-solving: because English is typically not a good language for expressing spatial relationships, people in homeworl, these fields frequently use diagrams to supplement textual descriptions. Elementary physics problems from college-level textbooks provide a useful and convenient domain for exploring the mechanisms of coreference.
Because flexible, opportunistic control is necessary in order to bowdoin recognize coreference and to act upon it, the understanding module of BEATRIX uses a blackboard control structure. The blackboard knowledge sources serve to homeworl identify physical objects in the picture, parse the essay, English text, and resolve coreferences between the two. We believe that BEATRIX demonstrates a control structure and collection of knowledge that successfully implements understanding of text and picture by computer. We also believe that this organization can be applied successfully to similar understanding tasks in homeworl, domains other than physics problem-solving, where data such as the output from in essay writing vision systems and speech understanders can be used in place of text and pictures. Kook, Hyung Joon. A Model-Based Representational Framework for Expert Physics Problem Solving (Ph.D.
Dissertation). The University of Texas at Austin, Department of Computer Sciences. Report# AI89-103 (dissertation). Homeworl? May 1989. 258 pages. Real-world physics problems are presented in terms of informal, real-world objects and the relationships among them. An important task of a problem solver is to obtain a formal representation of the problem by interpreting each of these objects and and finance, relationships into formal, often abstract, models of physics (such as a point mass or the principle of uniform circular motion). Representation of such models has been the main research issue in homeworl, building APEX (A Physics Expert), a computer program developed for solving elementary physics problems. The main areas of research APEX addresses are ways to represent the conceptual models of the domain, the development of methods to obtain the representation of phd research a problem in terms of these models, and the study of the linkage between the two representations (initial, informal, and homeworl, internal, formal, problem representations). During APEX's problem solving, the problem is represented in the form of a data connection network, which is progressively augmented by these models in the form of additional network elements.
In order to explicate the data conversion scheme between the model instances and the features of objects in supplement, the initial problem, the homeworl, notion of writing view is presented as an object-level representational framework for connecting the two representations. The view framework also supports multiple representations (i.e., viewing many objects as a single canonical physical object, and one object as many canonical physical objects), handling of homeworl incompletely specified problems, and essay supplement, the invertibility of the homeworl, views (the facility for transferring the results obtained from the internal representations back to the original representations). Banking And Finance? APEX facilitates the selection of models in homeworl, two independent modes: a human- guided mode in which models are selected by a human through a user-friendly interface, and a machine-inference mode in which models are selected by a rule-based inference system. Essay Is Ailing Our National Game Hockey? This computational framework provides a powerful representational mechanism that allows a finite set of physical principles to be applied to homeworl a potentially infinite variety of problems. Barnett III, Benjamin Lewis.
Evaluation and Implementation of discuss in essay Protocols in the Local Area Network Testbed Environment. University of homeworl Texas at Austin, Department of Computer Sciences. Report# TR-89-35 (dissertation). And Finance? November 1989. 261 pages. This thesis presents the results of the Local Area Network Testbed experience. The design of the testbed, the results of several experiments and the results of a formal protocol analysis are included. Three data link layer protocols for Carrier Sense Multiple Access with Collision Detection (CSMA/CD) bus networks were implemented in the testbed. The performance of these three protocols under several different artificial workloads is compared. The three protocols were the commercially available Ethernet, the Enet II protocol proposed by Molloy, and the Virtual Time CSMA/CD (VTCSMA/CD) protocol proposed by homeworl, Molle. Discuss In Essay Writing? The three protocols represent three fundamentally different approaches to handling collisions among users of homeworl a broadcast channel.
Ethernet randomizes retransmission attempts for the conflicting packets in an attempt to minimize the likelihood of successive collisions. Enet II uses a probabilistic algorithm to schedule the retransmissions of conflicting packets to writing resolve the collision. VTCSMA/CD uses a technique which reduces the initial likelihood of collisions. Enet II is shown to have significantly better variance of delay than Ethernet. VTCSMA/CD has the best variance of delay of the three protocols due to the success of its collision avoidance method. Homeworl? The implementation of Enet II demonstrates that techniques usually reserved for slotted networks can be beneficially employed on their unslotted counterparts. To investigate the adaptation of slotted protocols to unslotted use, a well known slotted Collision Resolution Protocol (CRP), the Gallager First-Come, First-Served (FCFS) protocol, is adapted to unslotted operation and proven to have bounded delay.
A second adaptation of the protocol which responds to collisions differently is shown to deadlock. Deadlock detection and writing, recovery methods are presented. A new CRP based on the deadlock recovery method and using information about the location of colliding stations is proposed. Mooney, Raymond. A General Explanation-Based Learning Mechanism and Its Application to Narrative Understanding (PhD dissertation).
The University of Texas at Austin, Department of Computer Sciences. Report# AI88-66 (dissertation). January 1988. 232 pages. This report consists of the author's dissertation from the University of Illinois at Urbana-Champaign. Holte, Robert Craig. An Analytical Framework for Learning Systems.
The University of Texas at Austin, Department of Computer Sciences. Report# AI88-72 (dissertation). February 1988. Homeworl? 172 pages. The problem addresses in this thesis is that of bowdoin supplement defining a set of concepts and techniques that facilitate the comparison and analysis of learning systems. Systems are modelled in terms of certain abstract processes and bodies of information. Different types of systems correspond to different ways of representing the model. Systems of different types are compared using behavior-preserving transformations.
Formal definitions are given for representation and generative structure of a system. These and related concepts, such as bias and implicit knowledge, facilitate the analysis of a system's efficiency and homeworl, its use of task-specific knowledge. Bareiss, Ellis Raymond, Jr. Protos: A Unified Approach to Concept Representation, Classification, and Learning (Ph.D. Discuss Writing? Dissertation). Homeworl? The University of Texas at Austin, Department of Computer Sciences. Report# AI88-83 (dissertation). August 1988.
215 pages. The primary contribution of leadership essay mckinsey this research is a unified approach to concept representation, classification, and concept learning. This approach has been implemented as a computer program, Protos, which learns concepts as it performs classification under the guidance of a teacher. The soundness of the homeworl, approach has been demonstrated by successfully applying Protos to banking and finance the task of acquiring knowledge for performing heuristic classification at an expert level of proficiency. The Protos approach addresses the complexities of homeworl representing, using, and learning natural concepts. These concepts are polymorphic and ill-defined. Writing? Most machine learning research is homeworl based on inductive learning and deductive classification, which are more suitable for artificial domains (e.g., mathematics) than natural domains (e.g., medicine). Phd Research Proposal Marketing? In contrast, Protos takes an exemplar-based approach. It represents concepts extensionally as sets of retained exemplars, classifies a new instance by recalling a similar exemplar and explaining its similarity to the instance, and learns when a classification failure indicates that knowledge is homeworl missing. Because Protos learns as a byproduct of discuss writing classification, its performance continually improves. Protos has been experimentally evaluated by training it to homeworl diagnose hearing disorders.
An expert audiologist trained Protos with 200 cases of hearing disorder. Through this small amount of our national hockey training, Protos evolved into an expert system whose classification performance was comparable to that of experienced human clinicians. Lin, Yow-Jian. A Parallel Implementation of Logic Programs (Ph.D. Dissertation). The University of Texas at Austin, Department of Computer Sciences.
Report# AI88-84 (dissertation). Homeworl? August 1988. 118 pages. Our National Game Hockey? Logic programming is increasingly being used in symbolic processing applications. As the complexity of homeworl symbolic computation increases, executing logic programs in parallel is perhaps the only way to writing research paper meet the computational demands of the homeworl, next generation computing.
Due to implicit representation of parallelism and a medical paper, separation of specification and control, logic programming also offers a possible solution to the problem of utilizing highly parallel architectures. Various parallel execution models for logic programs have been proposed, but most of them cannot be implemented efficiently. This dissertation presents a parallel execution model of logic programs and its implementation on a shared memory multiprocessor. The execution model preserves the don't-know nondeterminism, and homeworl, follows the generator-consumer approach to exploit AND-parallelism. On What Is Ailing Game? Unlike many other execution models, this model constructs the data-dependency information dynamically, requires no information from the user, and is able to exploit all the AND-parallelism available in the framework of the generator-consumer approach. Moreover, this model can back- track intelligently at the clause level without incurring excessive overhead. Our implementation of this execution model on the Sequent Balance multiprocessor obtains linear speedup on many programs containing AND-parallelism. Contrary to the belief of many researchers, our work shows that it is possible to do dynamic dependency analysis and intelligent backtracking efficiently. Kim, Hyoung-Joo. Homeworl? Issues in Object-oriented Database Schemas. University of marketing Texas at Austin, Department of Computer Sciences.
Report# TR-88-20 (dissertation). May 1988. 244 pages. The successful use of database management systems in data-processing applications has created a substantial amount of interest in applying database techniques to such areas as knowledge bases and artificial intelligence (AI), computer-aided design (CAD), and office information systems (OIS). In order to provide the additional semantics necessary to homeworl model these new applications, many researchers have adopted the object-oriented programming paradigm to serve as a data model. In order to use the objectoriented approach in a database system, it was necessary to banking and finance thesis add persistence and sharability to the object-oriented programming paradigm. Several database systems based on this approach are under implementation. Therefore, object-oriented database systems combine the strengths of object-oriented programming languages and conventional database systems. The practical applications of object-oriented databases, such as CAD, AI, and OIS, require the ability to dynamically make a wide variety of changes to the database schema. This process is called schema evolution.
We establish a consistent and complete framework of homeworl schema evolution. Based on our framework, the writing a medical research paper, MCC ODBS group implemented a schema manager within their prototype object-oriented database system, ORION. On top of the schema manager of ORION, we implemented a graphical schema editor, PSYCHO. Adiga, Ashok K. Performance Modelling of Parallel Computations. University of Texas at Austin, Department of Computer Sciences. Report# TR-88-11 (dissertation). April 1988.
165 pages. The design of homeworl parallel computations involves numerous decisions which effect execution efficiency. The choice of an marketing, optimum configuration for a computation on a given architecture is essential for attaining the maximum efficiency in terms of achieved speedup. Homeworl? Some of the relevant factors in leadership, the configuration space of a computation include the granularity of homeworl a task, the communication model used, choice of dependencies between tasks and the host architecture on which the application is to be run. In this dissertation, we present a model for representing parallel computations which can be used to analyze their performance for various configurations. Our model is an extended Petri Net with facilities to model control and data flow mechanisms, as well as synchronization and bowdoin supplement, communication primitives. A methodology is developed for representing the execution of a computation on a given architecture.
The methodology consists of viewing the model as consisting of homeworl three distinct submodels (the computation, architecture and marketing, mapping submodels) which have standard interfaces between them. Specification of a structured methodology enables the automatic generation of model instances. In addition, it becomes possible to specify a library from which architectures can be selected to determine if they are suitable for a given computation. This modelling technique is then used to homeworl study the performance of computations under variations in their configuration parameters, including their actual run-time behavior on various target architectures. Kim, Sung Jo. A General Approach to Multiprocessor Scheduling. University of Texas at Austin, Department of Computer Sciences.
Report# TR-88-04 (dissertation). February 1988. 155 pages. As a variety of general-purpose multiprocessor systems have been recently designed and built, multiprocessor scheduling is becoming increasingly important. Multiprocessor scheduling is a technique to exploit the underlying hardware in mckinsey, a multiprocessor system so that parallelism existing in an application program can be fully utilized and interprocessor communication time can be minimized.
Traditionally, most research on multiprocessor scheduling has focused on the development of specific scheduling strategies to take advantage of unique characteristics of a specific multiprocessor system or application program. In this thesis, we define and characterize scheduling techniques and homeworl, related heuristic mapping algorithms which are applicable to writing paper a spectrum of homeworl multiprocessor systems and a broad class of writing research paper application programs. Homeworl? The fundamental idea we use is that multiprocessor scheduling can be regarded as a series of mappings from a medical paper a computation graph (representing an application program) to a virtual architecture graph (representing an optimal architecture for the program) and eventually to a physical architecture graph (representing a target multiprocessor system). We propose linear clustering and linear cluster merging as effectual heuristics. After linear clustering and merging, the homeworl, computation graph is transformed into a virtual architecture graph.
This graph represents an optimal architecture which compromises between two conflicting goals, minimization of interprocessor communication and maximization of potential parallelism, and satisfies the other goals, throughput enhancement and workload balance, relatively well. Proposal? Then we develop two efficient scheduling algorithms which map the optimal architecture graph onto a physical architecture graph which may represent either a homogeneous or a heterogeneous multiprocessor system. These algorithms rely not only on local information but also on homeworl limited global information. Finally, we present the result of performance evaluation of the mapping algorithms on an Intel iPSC with 32 processors and a Sequent Balance with 10 processors. Biswas, Jit.
Techniques and Data Structures for Parallel Resource Management. University of banking Texas at Austin, Department of Computer Sciences. Report# TR-87-42 (dissertation). November 1987. 200 pages. NO ABSTRACT. Bhat, Vivekanand.
Design of the Cadm Based Sort/search/set Engine. University of Texas at Austin, Department of Computer Sciences. Report# TR-87-36 (dissertation). September 1987. 171 pages. NO ABSTRACT. Ramakrishnan, Raghunath.
On the Implementation of homeworl Data Intensive Logic Programs. University of Texas at Austin, Department of Computer Sciences. Report# TR-87-21 (dissertation). May 1987. 210 pages. In Essay? NO ABSTRACT. Dafni, Gad Joseph. Design and Performance Evaluation of the Texas Object Based System. Homeworl? University of Texas at Austin, Department of Computer Sciences. Writing A Medical? Report# TR-87-04 (dissertation). January 1987.
205 pages. NO ABSTRACT. Hufnagel, Stephen Peter. Vertically Partitioned Object-oriented Software Design for Dependability And Good Performance. University of Texas at Austin, Department of Computer Sciences. Report# TR-87-02 (dissertation). January 1987. 156 pages. NO ABSTRACT. Murray, William R. Homeworl? Automatic Program Debugging for Intelligent Tutoring Systems (PhD dissertation). The University of Texas at Austin, Department of Computer Sciences.
Report# AI86-27 (dissertation). June 1986. 276 pages. Program debugging is an important part of the domain expertise required for intelligent tutoring systems that teach programming languages. This dissertation explores the process by which student programs can be automatically debugged in bowdoin essay supplement, order to increase the homeworl, instructional capabilities of these systems. This research presents a methodology and implementation for the diagnosis and correction of nontrivial recursive programs. In this approach, recursive programs are debugged by repairing induction proofs in the Boyer-Moore Logic. The potential of a program debugger to automatically debug widely varying novice programs in a nontrivial domain is proportional to its capabilities to writing reason about computational semantics. By increasing these reasoning capabilities a more powerful and robust system can result. This thesis supports these claims by examining related work in automated program debugging and by homeworl, discussing the phd research marketing, design, implementation, and evaluation of Talus, an automatic debugger for LISP programs.
Talus relies on its abilities to reason about computational semantics to perform algorithm recognition, infer code teleology and to automatically detect and correct nonsyntactic errors in student programs written in a restricted, but nontrivial, subset of LISP. Solutions can vary significantly in homeworl, algorithm, functional decomposition, role of variables, data flow, control flow, values returned by functions, LISP primitives used, and phd research, identifiers used. Solutions can consist of multiple functions, each containing multiple bugs. Homeworl? Empirical evaluation demonstrates that Talus achieves high performance in debugging widely varying student solutions to challenging tasks. Murray, William R. Essay? Talus: Automatic Program Debugging for Intelligent Tutoring Systems. The University of Texas at Austin, Department of homeworl Computer Sciences. Report# AI86-32 (dissertation). August 1986. 37 pages. This report summarizes the author's dissertation (AI86-27). Korner.
Kim. An Intelligent Remote File Server (PhD Dissertation). The University of Texas at Austin, Department of Computer Sciences. Bowdoin Essay? Report# AI86-39 (dissertation). Homeworl? December 1986. 180 pages. Limitations of current disk blocking caching strategies are discussed. A new model for providing remote file service using knowledge based caching algorithms is proposed. The knowledge based algorithms generate expectations of user process behavior which are used to provide hints to the file server. Surplus resources of the remote file server permit incorporation of these hints into caching algorithms. The research involves gathering trace data from a modified Unix kernel and driven simulation of remote file server models.
Comparisons are made between conventional, knowledge based and optimal models. Further applications of knowledge based strategies in operating systems are discussed. Hermenegildo, Manuel V. Proposal? An Abstract Machine Based Execution Model for Computer Architecture Design And Efficient Implementation of Logic Programs in Parallel. University of Texas at Austin, Department of Computer Sciences. Homeworl? Report# TR-86-20 (dissertation). August 1986. 268 pages. NO ABSTRACT. Smith, Michael Kavanaugh. Knowledge Based Contextual Reference Resolution for Text Understanding (PhD dissertation).
The University of Texas at Austin, Department of Computer Sciences. Report# AI85-02 (dissertation). January 1985. Writing? 95 pages. This report extends the homeworl, concept of reference resolution in a discourse context to cover a broad range of connective inference required for text understanding. Access to all conceptual relations is restricted or facilitated by the context established by essay game, preceding text.
This contextual filter greatly simplifies the establishment of connections between the surface text and previously instantiated discourse representation. The reference procedure requires a taxonomically organized knowledge base of structured concepts, in the sense of homeworl frames and scripts. The procedure selects lexical senses and paper, generates reference candidates, which may be either explicit or implicit in homeworl, the discourse context. These are matched against constraints imposed by the surface text and a conceptual representation is banking constructed and integrated with the accumulated discourse structure. Levinson, Robert A. A Self Organizing Retrieval System for Graphs (PhD dissertation). The University of Texas at Austin, Department of Computer Sciences. Report# AI85-05 (dissertation). May 1985. 89 pages. This report describes the theory, design and implementation of homeworl a graph-based, self-organizing database retrieval system.
The system is designed to support the expert problem solving tasks of recall, design and recovery. The fundamental design principle is the production of discuss in essay writing a partial ordering by the relation subgraph-of. This relation is considered to be equivalent to more- general-than. This document discusses this design from homeworl three different levels: an abstract level in which the nodes in the partial ordering are concepts, the implementation level described above (the nodes are graphs), and an application level in which the nodes are domain specific objects such as molecules or reactions. The primary problem domain explored is organic chemistry. A large database of organic reactions and starting materials can be queried to extract reactions or molecules that match, either exactly or approximately, desired structures. The system may also suggest precursors to a desired target molecule. Our National Game Hockey? The queries are answered by exploiting a set of concepts that are commonly subgraphs of molecule or reaction graphs. Homeworl? Concepts serve multiple purposes: They constrain the banking and finance thesis, search involved in the matching process so that the time required to answer a query grows sub-linearly in the size of the homeworl, database.
Concepts define the notion of similarity that is crucial if approximate match is desired. They also may be useful generalizations of reactions or molecular structures. The concepts can be discovered (i.e., constructed) by the system itself using largely syntactic criteria based on the topology of the database. A variety of performance tests are performed, including a comparison of the system's precursor recommendation capability with graduate students in organic chemistry. The system is also applied to the retrieval and generalization of chess positions. Gangopadhyay, Dipayan.
A Formal System for Network Databases and Its Applications to Integrity Related Issues. University of Texas at Austin, Department of Computer Sciences. Banking Thesis? Report# TR-84-19 (dissertation). June 1984. 113 pages. NO ABSTRACT. Struensee, Michael Calvin. Homeworl? Uses of Dipole Oscillator Strength Sum Rules in Second Order. University of Texas at Austin, Department of banking and finance Computer Sciences. Report# TR-84-18 (dissertation). Homeworl? June 1984.
192 pages. NO ABSTRACT. Rathi, Bharat Deep. The Design and Performance Analysis of a Self Managing Secondary Memory. University of Texas at Austin, Department of Computer Sciences. Report# TR-84-09 (dissertation).
March 1984. 201 pages. NO ABSTRACT. Han, Sang Yong. A Language for the Specification and Representation of Programs in a Data Flow Model of Computation. University of Texas at Austin, Department of Computer Sciences. Report# TR-83-230 (dissertation). May 1983. 213 pages. NO ABSTRACT. Canas, Daniel A. Operating Systems for Reconfigurable Network Architecture Systems: the Node Kernel.
University of Texas at Austin, Department of bowdoin essay Computer Sciences. Report# TR-83-228 (dissertation). Homeworl? May 1983. 143 pages. NO ABSTRACT. DOWNLOAD tr83-228a.pdf tr82-228b.pdf tr82-228c.pdf.
Kunii, Hideko. Graph Data Language: a High Level Access-path Oriented Language. Writing? University of Texas at Austin, Department of Computer Sciences. Report# TR-83-216 (dissertation). May 1983.
188 pages. NO ABSTRACT. Alterman, Richard Ethan. A System of homeworl Seven Coherence Relations for Hierarchically Organizing Event Concepts in Text. University of proposal marketing Texas at Austin, Department of Computer Sciences.
Report# TR-82-209 (dissertation). September 1982. 184 pages. NO ABSTRACT. DOWNLOAD tr82-209a.pdf tr82-209b.pdf tr82-209c.pdf tr82-209d.pdf.
DiVito, Benedetto L. Verification Of Communications Protocols And Abstract Process Models. The University of Texas at Austin, Department of Computer Sciences. Report# TR-82-25 (dissertation). August 1982. 243 pages. Communications protocols are crucial for the reliable exchange of information in distributed systems. In this dissertation, we consider the problem of formally specifying and verifying properties of protocol systems. Such systems are modeled by homeworl, hierarchies of concurrent processes, where interprocess communication is achieved by message passing rather than through arbi trary shared variables. Based on this model, a methodology is developed for on what mechanically assisted protocol analysis. Homeworl? The Gypsy methodology for essay mckinsey concurrent program verification is the homeworl, point of departure for much of this work. Specialized methods applicable to protocols are derived from the Gypsy methods.
Behavior of protocol modules is specified in a fairly abstract manner using a state transition paradigm, thus avoiding a highly procedural form of specification. Protocol services are specified by discuss in essay, means of assertions over message histories. Proof techniques are introduced for verifying safety properties of the homeworl, proc. ss models. In addition, a specification and bowdoin essay, assertion language is developed. This language emphasizes features and operations useful for expressing protocol oriented concepts and constructing proofs about them. An important aspect of this work is use of machine assisted analysis, most notably the homeworl, use of mechanical theorem proving. A strategy for applying a particular automatic theorem prover, the Boyer-Moore prover, to protocol verification problems is put forth. Phd Research Proposal? A consequence of this strategy is the accumulation of a large body of proved lemmas, constituting a rudimentary deductive theory for homeworl protocols. With this theory, the methodology has successfully been applied to a pair of sample transport protocols. These include the Stenning protocol and an abstraction of the data transfer function of Tep.
Burger, Wilhelm F. Writing A Medical Paper? A Modeling System for Mathematical Programming. University of Texas at Austin, Department of homeworl Computer Sciences. Report# TR-81-177 (dissertation). May 1981. Writing A Medical Research Paper? 112 pages. NO ABSTRACT. Amsler, R. A. The Structure of the Merriam-Webster Pocket Dictionary. University of Texas at Austin, Department of Computer Sciences. Report# TR-80-164 (dissertation). December 1980.
175 pages. NO ABSTRACT. DOWNLOAD tr80-164a.pdf tr80-164b.pdf tr80-164c.pdf. Smith, Connie U. The Prediction and Evaluation of the Performance of Software From Extended Design Specificatoins. University of Texas at Austin, Department of Computer Sciences. Homeworl? Report# TR-80-154 (dissertation). August 1980. 148 pages.
NO ABSTRACT. DOWNLOAD tr80-154a.pdf tr80-154b.pdf tr80-154c.pdf. Keller, T. Phd Research Proposal Marketing? W. Homeworl? Computer System Models with Passive Resources. University of Texas at Austin, Department of Computer Sciences. Essay Mckinsey? Report# TR-76-57 (dissertation). May 1976.
82 pages. NO ABSTRACT. Foster, D. V. File Assignment in Memory Hierarchies. University of Texas at Austin, Department of Computer Sciences. Homeworl? Report# TR-75-48 (dissertation). May 1975. 137 pages. NO ABSTRACT.
Baldwin, L. J. A Method for Designing Programs and marketing, Its Application to Introductory Computer Science Courses. University of Texas at homeworl Austin, Department of Computer Sciences. Report# TR-74-39 (dissertation). August 1974. On What Is Ailing Our National Hockey? 138 pages. NO ABSTRACT. Alexander III, W. Homeworl? P. Essay? Analysis of Sequencing in Computer Programs and Systems. University of Texas at homeworl Austin, Department of Computer Sciences. Phd Research Proposal? Report# TR-74-35 (dissertation). August 1974. Homeworl? 92 pages.
NO ABSTRACT. DOWNLOAD tr74-35a.pdf tr74-35b.pdf tr74-35c.pdf. Anderson, J. Essay? W. Primitive Process Level Modeling and Simulation of a Multiprocessing Computer System. University of Texas at homeworl Austin, Department of Computer Sciences. Report# TR-74-32 (dissertation). May 1974. 123 pages. Mckinsey? NO ABSTRACT. DOWNLOAD tr74-32a.pdf tr74-32b.pdf tr74-32c.pdf. Friedman, D. P. Grope: a Graph Processing Language and homeworl, Its Formal Definition.
University of Texas at Austin, Department of essay on what is ailing game Computer Sciences. Homeworl? Report# TR-73-20 (dissertation). August 1973. 136 pages. NO ABSTRACT. Ragland, L. C. A Verified Program Verifier. University of Texas at Austin, Department of our national game hockey Computer Sciences. Report# TR-73-18 (dissertation). May 1973. 157 pages.
NO ABSTRACT. Boyer, Robert. Machine Locking: A Restriction Of Resolution. The University of Texas at Austin, Department of Computer Sciences. Report# ATP-5 (dissertation). August 1971. 81 pages. Locking is homeworl a restriction of resolution which is somewhat similar to A-ordering but is essay is ailing our national game hockey more restrictive. It involves arbitrarily indexing with integers the homeworl, literals in the clauses to be resolved; different occurrences of the same literal may be indexed differently. Resolution is then permitted only on literals of lowest index in each clause.
The literals in resolvents are indexed hereditarily (merging low when necessary). It is hockey shown to be complete for first order logic. Locking results in a significant reduction in homeworl, the number of clauses generated (as compared with ordinary resolution). In this thesis locking is compared with other restrictions of resolution and is shown to be incompatible with some. It is not compatible with linear format and merging, but this shortcoming seems to be more than compensated for by the fact that both clauses are restricted in every resolution. Several examples of locking derivations are given. Finally, a special application of locking to a troublesome transitivity axiom is de This dissertation has not been included in the microfiche collection. DiVito, Benedetto L. Verification Of Communications Protocols And Abstract Process Models. The University of Texas at Austin, Department of bowdoin essay supplement Computer Sciences. Report# AI82-25 (dissertation). August 1982.
243 pages. Communications protocols are crucial for the reliable exchange of information in distributed systems. In this dissertation, we consider the problem of formally specifying and verifying properties of protocol systems. Such systems are modeled by hierarchies of homeworl concurrent processes, where interprocess communication is achieved by message passing rather than through arbi trary shared variables. Based on this model, a methodology is developed for mechanically assisted protocol analysis. The Gypsy methodology for concurrent program verification is the point of phd research departure for much of this work. Specialized methods applicable to homeworl protocols are derived from the Gypsy methods. Behavior of protocol modules is specified in a fairly abstract manner using a state transition paradigm, thus avoiding a highly procedural form of specification. Protocol services are specified by means of assertions over writing a medical paper message histories. Proof techniques are introduced for homeworl verifying safety properties of the leadership mckinsey, proc. ss models.
In addition, a specification and assertion language is homeworl developed. Bowdoin? This language emphasizes features and operations useful for expressing protocol oriented concepts and homeworl, constructing proofs about them. An important aspect of this work is use of machine assisted analysis, most notably the use of phd research marketing mechanical theorem proving. Homeworl? A strategy for applying a particular automatic theorem prover, the Boyer-Moore prover, to essay on what is ailing hockey protocol verification problems is put forth. Homeworl? A consequence of marketing this strategy is the accumulation of a large body of proved lemmas, constituting a rudimentary deductive theory for protocols. With this theory, the homeworl, methodology has successfully been applied to a pair of proposal sample transport protocols. These include the Stenning protocol and an abstraction of the data transfer function of Tep. Alterman, Richard E. Homeworl? A System of essay our national hockey Seven Coherence Relations for Hierarchically Organizing Event Concepts in Text. The University of Texas at Austin, Department of Computer Sciences. Homeworl? Report# AI82-1 (dissertation). December 1982.
A theory of event concept coherence is developed. It is shown that the thesis, pieces of event description which appear in a body of text can be gathered together and hierarchically organized using a dictionary of event/state concepts. This theory has been implemented in a computer system, NEXUS. The representations it produces are constructed in terms of seven coherence relations. The dictionary it uses was compiled from an analysis of ten folk tales. The seven coherence relations uused are class/subclass, sequence/subsequence, coordinate, antecedent, precedent, consequent and sequel. Sequence/subsequence and coordinate are two kinds of whole/part relations. The other four relations are temporal; antecedent and precedent concepts come before an event, consequent and sequel concepts come after an event. Associations between concepts in the dictionary are also organized in terms of the seven coherence relations. Homeworl? Associated with the concepts in the dictionary are default values for its case related arguments. Relationships between concepts in the dictionary are refined by attaching to bowdoin supplement each relationship in the dictionary a set of constraints on matching case arguments.
NEXUS uses the default values and the constraints to control the representation building process. Homeworl? The flexibility of the representation scheme is demonstrated by applying it to several diverse examples of narrative text in the literature, including script and plan based stories and speech acts. The feasibility of essay NEXUS is shown by applying it to eight samples of text and discussing in detail the homeworl, results. The utility of the hierarchical representation produced by NEXUS is validated by experiments in question answering and and finance thesis, summarizing. CS-TR-209. This dissertation has not been included in the microfiche collection. Tyson, W. Mabry.
APRVR: A Priority-Ordered Agenda Theorem Prover. The University of homeworl Texas at leadership mckinsey Austin, Department of Computer Sciences. Report# AI81-2 (dissertation). August 1981. This dissertation is homeworl concerned with research in phd research marketing, automatic theorem proving by homeworl, computers. Phd Research Proposal? Discussed herein are issues involved with designing a natural deduction theorem proving system whose search is guided by the priorities assigned to the formulas it attempts to homeworl prove and the methods used to leadership essay prove them. A list of the tasks to be done is kept in an agenda ordered by these priorities. A particular implementation of homeworl a priori ty-ordered agenda theorem prover, named APRVR, is essay mckinsey described but the main purpose of the research is to explore the advantages and homeworl, problems of using search strategy for theorem proving. The first chapter introduces theorem proving in general, and natural deduction theorem proving in essay supplement, particular. The need for a new combination of search strategy and control structure is homeworl motivated and the agenda-based system is shown to fill this need.
The objective of the research for this dissertation is set. Providing the groundwork for the later chapters, the second chapter describes the proof methods of t The examples given to APRVR are described in Chapter 5 and include some problems from symbolic logic, set theory and group theory. The final example is discuss a linear real inequality that has never before been proved by machine. APRVR's performance on these examples is homeworl discussed. Example proofs are included in an appendix. The conclusions of this research are presented in the final chapter with some suggestions for future research with priority-ordered agenda theorem provers. ATP-66. This dissertation has not been included in the microfiche collection.
Slocum, Jonathan. A Practical Comparison of Parsing Strategies for discuss in essay Machine Translation and Other Natural-Language Processing Purposes. The University of homeworl Texas at Austin, Department of and finance thesis Computer Sciences. Report# AI81-1 (dissertation). Homeworl? 1981. Twelve parsing methods are compared in essay on what game hockey, a practical setting, using three distinct grammars covering significant subsets of English, or German, in a series of experiments involving substantial texts drawn from independent sources. The purposes for which the various grammars were written and the approximate event of coverage for each grammar are described to support the homeworl, claim that the comparison is meaningful and indicative of general, average-case performance. The parsing strategies and the measurement techniques are discussed in some detail.
The results are sometimes counter-intuitive, and essay on what is ailing our national game hockey, differ from homeworl theoretical performance predictions. Discussion centers on the interpretation of the results, including how the choice of in essay evaluation metric affects performance judgments. Conclusions are drawn about the homeworl, relative efficiencies of these methods in real-world settings, and the significance of previous theoretical and idealized accounts of parser performance in leadership, light of the results obtained. Homeworl? NL-41. A Medical Research Paper? This dissertation has not been included in homeworl, the microfiche collection. Roach, J. W. Discuss? Determining the Three-Dimensional Motion and Model of Objects from a Sequence of homeworl Images. The University of Texas at Austin, Department of and finance Computer Sciences. Report# AI80-1 (dissertation). October 1980. 157 pages.
The goal of this dissertation is to homeworl determine precisely how an object is discuss in essay writing moving in three-dimensional space and to determine the three-dimensional- relationship of points on the surface of the object. The only information available is a sequence of photographic images taken as the homeworl, object moves across the field of view. The problem can be broken down into two sub-problems: the problem of leadership mckinsey determining the homeworl, correspondence of marketing feature points in one image with feature points in the next image; and homeworl, once the correspondence is established, the mathematical analysis required to determine the model and phd research proposal marketing, the movement. The correspondence problem, i.e., matching, is investigated using images of moving blocks. The corners of the blocks constitute the homeworl, feature points to be put in correspondence between images. Essay On What Our National Game Hockey? Several matching methods are combined into a hierarchy so that if one method fails another method can take over to help complete the matching process. Homeworl? The top level of the hierarchy matches by searching for feature points in the image of expected positions as computed from the expected movement of the object. The next hierarchy level matches an leadership essay, object by its position relative to other objects in the image, a property that is assumed to homeworl change only gradually.
The next hierarchy level matches a block's faces by relative position. Once faces have been matched, feature points bordering the faces not already matched by expected position can be put in on what game hockey, correspondence. The mathematical analysis of the homeworl, problem shows that there are an infinite number of geometrically similar solutions, each solution differing from the discuss, others by a scaling factor. A specific solution can be found by homeworl, setting the scaling to an arbitrary number. Two views of six feature points or three views of four feature points are required to find the model and the movement. For good accuracy, however, considerably more points, two views of twelve or fifteen points for example, are needed.
Also available as TR80-02. Hare, Dwight Francis. A Structure Program for proposal the Gypsy Verification Environment. The University of Texas at Austin, Department of Computer Sciences. Report# AI79-16 (dissertation). August 1979. 112 pages. NO ABSTRACT.
Novak, Gordon S., Jr. Computer Understanding of Physics Problems Stated in Natural Language. (Dissertation), also Technical Report NL-30. The University of Texas at homeworl Austin, Department of Computer Sciences. Report# AI76-nl30 (dissertation). March 1976. 120 pages. This thesis describes a computer program, called ISAAC, which can read, understand, solve, and draw pictures of physics problems stated in English. The program has solved twenty problems, most of which were taken unedited from high school and college physics texts. These problems involve rigid bodies in static equilibrium, and include such objects as levers, pivots, weights, ropes, and springs in various configurations.
An example of the class of problems solved is the following (from Schaum's Outline of College The foot of a ladder rests against a vertical wall and on essay a horizontal floor. The top of the ladder is supported from the wall by a horizontal rope 30 ft. Homeworl? long. Essay? The ladder is 50 ft. long, weighs 100 lb. with its center of gravity 20 ft. from the foot, and a 150 lb. man is 10 ft. from the homeworl, top. Determine the tension in the rope. In order to understand and solve such a problem, it is necessary to build an banking and finance thesis, internal model of the problem in homeworl, which the various objects and their interrelationships are adequately represented. Many of the relationships and features of the objects are not specified explicitly in the problem statement, but must be inferred by using common sense knowledge of what is usual. In the above example, we assume that the man is standing on the ladder although this is not explicitly stated.
Thus, the understanding of a physics problem is an active process in which the sentences of the problem statement are used to guide the construction of a mode which represents the relationships and features of objects with much greater detail and specificity than they are specified in the original problem statement. In this thesis, we investigate ways in which the and finance thesis, meanings of phrases and sentences may be understood and related to a developing model of the homeworl, problem, using common sense knowledge (represented by computer programs) to aid the understanding process. Ways of representing objects and their relationships are developed. These representations, which are originally created in response to the sentences in the problem statement, are further elaborated by processes which construct a geometric model of the problem, associate canonical objects (such as a point mass) with physical objects (such as a person), write and in essay, solve equations which describe the interactions of the objects, and homeworl, construct a diagram of the problem. The techniques used in ISAAC have potential application in providing a natural-language interface between specialist programs and users who are not computer professionals, and in computer programs. for teaching physics and other technical subjects. This dissertation has not been included in the microfiche.
Hendrix, Gary G. Partitioned Networks for the Mathematical Modeling of Natural-Language Semantics, also NL-28. Phd Research? The University of Texas at Austin, Department of homeworl Computer Sciences. Report# AI75-1 (dissertation). 1975. The main concern of this dissertation is to advance a modeling scheme for use in artificially intelligent natural-language understanding which is capable of encoding knowledge about the world in a uniform, precise and easily manipulatable form. As a prerequisite to understanding, fundamental concepts such as time, space, relation and change are formalized in terms of set-theoretic constructs. Properly utilized, such constructs provide the basis for an abstract mathematical modeling of the nature of the world. Certain human-like organization schemes are imposed upon the set-theoretic models so that knowledge becomes grouped into bundles which are meaningful and convenient units for discourse. Bowdoin Supplement? The organization schemes include a hierarchical classification, of objects and the packaging of sets of related changes into units called processes. Processes are defined by homeworl, process automata, structures capable of encoding discrete, continuous and parallel change.
In conjunction with the hierarchy, process automata may be used to and finance describe certain objects (both events and physical objects) at multiple levels of detail. Further, such automata may encode linguistic processes such as parsing and generation procedures. To facilitate use by homeworl, computers, the set-theoretic modeling scheme is mapped onto a network representation. This network representation provides easily accessible cross-linkage between semantically related pieces of information, thus facilitating algorithms which interrogate the information modeled in the network. A special network partitioning mechanism is used to delimit the scopes of quantified variables, to distinguish hypothetical and imaginary situations from reality, to encode the multiple, alternative worlds considered in planning, and to focus attention at particular levels of detail. Phd Research Proposal Marketing? The modeling scheme uses a single paradigm to encode information relating to all types of objects including psychical objects, situations, times, events, categories and processes. Homeworl? NL-28. This dissertation has not been included in the microfiche collection. Friedman, Daniel P. GROPE: A Graph Processing Language and its Formal Definition. The University of Texas at Austin, Department of Computer Sciences. Report# AI73-1 (dissertation).
August 1973. This dissertation concerns the design of a programming language for efficient processing of directed graph data structures and the precise formal definition of the semantics of the essay on what is ailing, language designed. The design handles data structures and operations rather than control structures. This emphasis at homeworl the semantics level gives rise to leadership a somewhat different view of the problem of formal definition. This research has resulted in the development of a graph processing language, GROPE, for efficient processing of directed graph structures.
GROPE embodies some major new ideas about representation and processing of complex data structures. In addition, a new two-level definitional technique for programming semantics has been introduced. One level develops user-oriented semantics and the other develops implementation-oriented semantics. As an illustration of this technique a major part of homeworl GROPE is formally defined. CS-TR-20.
This dissertation has not been included in the microfiche collection.
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Charlotte Mason: education, atmosphere, habit and living ideas. Charlotte Maria Shaw Mason was born in England on New Year’s Day, 1842, at Bangor, by the sea. Homeworl! Regarding her parents and childhood, she wrote: “My mother was delicate and required sea air, so it happened I was born in Bangor and writing a medical research, that my earliest recollections are associated with the sea. My father, J. H. Mason, was a Liverpool merchant, a ‘dry-salter’…a refined and simple man, very fond of books….I had no brothers and sisters, and homeworl, both parents were also only children…My parents, who were glad of the essay is ailing our national hockey, occupation educated me (with some lessons from outside), my father taking some subjects, my mother others, at homeworl first through the medium of Butter’s Spelling Book , with its long lists and essay is ailing, hard spellings, its Aesop’s Fables and Lord Chesterfield’s Letters to his Son .” (Cholmondeley 1960: 1-2). Charlotte’s mother died when Charlotte was 16. Her father never recovered from this loss and homeworl, died the following year. Left alone in the world, Charlotte moved in on what our national game hockey with friends until, at age 18, she moved to London and entered the only teacher training college in England at homeworl the time, The Home and Colonial School Society. The Home and Colonial School Society, established by Elizabeth Mayo and leadership, her brother Charles Mayo in 1836, was the first school in England devoted to advancing the homeworl, methods of Swiss educational reformer Johann Pestalozzi.
In 1860, Mason began her 3 year training there and in 1861, the bowdoin essay, school made a special arrangement and homeworl, gave her a post as headmistress of one of the first infant schools in the country, The Davison School. Banking And Finance Thesis! After earning her teaching certificate and teaching 3 years in the infant school, Charlotte Mason pioneered a high school for girls at homeworl The Davison School, beginning when she was 22. (see photo of her at age 22 on discuss in essay her first visit to homeworl, Ambleside) She remained there until she was 29, when illness required that she take a long rest. After a period of travel, the 32 year old Charlotte Mason took a teaching position at on what is ailing Bishop Otter College in Chichester. As Mistress of Method, she lectured prospective women teachers in educational methods, hygeine and homeworl, physiology. After 4 years in this position, “she had such a serious breakdown that she was obliged to bowdoin essay, give up teaching” (Cholmondeley 1960: 12). This led to another period of travel abroad, after which Mason began her serious walks in the shires (counties) of England, keeping notes. These notes later became the material for her popular series of geography books, the first being The Forty Shires: Their History, Scenery, Arts and Legends , published in 1880 when she was 38. Due to its popularity, five more geography books followed, allowing Charlotte Mason to live off the profits and homeworl, move to Bradford. She frequently visited London, where she had rooms in a ladies’ club and writing paper, membership in the Philosophical Society, Browning Society and a poetry club where Shakespeare’s plays were read. In 1885, her vicar asked the 43 year old Charlotte Mason for homeworl a donation towards the fund for a new parish room at St.
Mark’s Anglican Church in Manningham. Instead of money, Mason offered to give a series of lectures on discuss writing education. These lectures appeared the next year in a print volume titled Home Education. A year later, an attendee of these lectures, Mrs. Francis Steinthal, was instrumental in helping Mason form an educational society for parents in homeworl Bradford, the Parents’ Educational Union (PEU). Mason then sought the counsel of several educational leaders for advice in making the union known to a wider audience. This led to the eventual opening of many PEU branches. In 1890, Charlotte Mason began a monthly periodical for the PEU, the Parents’ Review , and preparing to open her own training college for women. Two years later, at age 50, the House of Education did open at Springfield, Ambleside, with a class of 21 women students the next year (see photo). Essay Game! Attached to homeworl, the training college was the Parents’ Union School, where young children (of parent subscribers to Mason’s monthly journal) could attend for free. The House of Education moved in phd research proposal 1894 to Wordsworth’s niece’s Green Bank Estate in Ambleside, renamed Scale How, and homeworl, Charlotte Mason continued her work there with the writing, training college, practicing school, Parents’ Review journal, Parents’ National Education Union and home correspondence course until her death on January 16, 1923.
She was 81. In Charlotte Mason’s day in England, the thoughts and ideas of Kant and Descartes, Rousseau and Pestalozzi were all taking part in the sway amongst educators from traditional, formal, classical schooling primarily for boys, towards a universal and more informal education for all children in all classes of society. Also, the women’s liberation movement had begun and women were fighting for homeworl higher education for girls and the right to vote. Miss Mason, being in bowdoin essay supplement the rather uncommon position of being independent at homeworl age 16 (due to being orphaned), was able to attend a new teacher training college for women, later pioneer her own high school for girls and eventually form her own training school (The House of Education), national educational organization (PNEU) and elementary schools. All of this, for a woman in her time, was especially extraordinary. Charlotte read widely and was trained in the educational methods of Johann Pestalozzi . Pestalozzi (1712-1778), an ardent follower of writing a medical paper Jean-Jaques Rousseau, wanted children to learn using their senses and “things,” not “mere words,” and homeworl, is responsible for phd research marketing coining the homeworl, term “object lesson.” From this and other influences, Mason formed her own philosophy of education, spelled out in her 20 articles of education (also known as her child’s Bill of Rights [Cholmondeley 1960: 227]) and in essay on what is ailing our national hockey her 6 educational volumes, especially her last, An Essay towards a Philosophy of Education (Mason: 1923). Her key ideas are as follows: Charlotte Mason’s educational article #6 states: “By the saying, EDUCATION IS AN ATMOPSHERE, it is not meant that a child should be isolated in what may be called a ‘child environment,’ especially adapted and prepared; but that we should take into account the educational value of homeworl his natural home atmosphere, both as regards persons and things, and thesis, should let him live freely among his proper conditions. It stultifies a child to homeworl, bring down his world to in essay writing, the ‘child’s’ level” (Mason 1923: preface). Charlotte Mason is referring to a practice that was becoming popular in homeworl her time, spearheaded by Friedrich Froebel and his Kindergartens and Maria Montessori and her Children’s Houses, that of making the young child’s school environment one that is scaled down to his size, including the furniture, equipment, and materials.
Mason makes clear when she speaks of the atmosphere or environment, that this is not what she has in discuss in essay writing mind, but is homeworl speaking of the child’s home, both who and research, what is in homeworl it, and what effect this plays in the child’s education. Mason believed a child’s natural home environment to be superior primarily because of the lack of freedom and the artificiality she felt existed in infant schools or kindergartens. In Essay! Echoing Rousseau, Mason felt too much interference from either persons or things to be detrimental, trampling “spontaneity or personal initiation” on the child’s part (Mason 1886: 190). Homeworl! Rather, Mason believed a child, as much as possible, should be left to Nature, the great Educator. “..it is the wisdom of parents to leave children as much as may be to Nature” (Mason 1886: 186). “There are few things sweeter and more precious to the child than playful prattle with her mother; but one thing is better– the communing with the larger Mother, in order to which the child…should be left to leadership mckinsey, themselves” (Mason: 1886: 79). Homeworl! “…our part in the education of children should be thoughtfully subordinated to phd research proposal, that played by homeworl, Nature herself” (Mason 1896: 193). Charlotte Mason spends a significant amount of writing a medical paper her first volume, Home Education , in homeworl discussing what type of in essay atmosphere is most conducive to the child’s natural development, thus, his early education. Homeworl! She believed outdoor life to be of utmost importance. Proposal Marketing! “…a mother’s first duty to her children is to secure for them a quiet growing time, a full six years of passive receptive life, the waking part of it spent for the most part out in the fresh air” (Mason 1886: 43). Time outdoors, with little to no intervention from an adult, provided what Mason felt were educational necessities: use of the child’s senses, play, learning from “things,” and homeworl, the opportunity for keen observation of nature. To sum up this first key idea, the importance of the child’s early “atmosphere of environment,” Mason wrote: ..my object is to show that the chief function of the child- his business in the world during the first six or seven years of life- is to find out all he can, about whatever comes under his notice, by means of his five senses; that he has an insatiable appetite for a medical knowledge got in his way; and that…the endeavor of his parents should be to homeworl, put him in banking the way of making acquaintance freely with Nature and homeworl, natural objects; that, in fact, the intellectual education of the young child should lie in the free exercise of perceptive power..and the wisdom of the educator is to follow the lead of phd research proposal marketing Nature in the evolution of the complete human being (Mason 1886: 96-97). Mason’s article #7 is. “By EDUCATION IS A DISCIPLINE, is meant the discipline of homeworl habits formed definitely and thoughtfully, whether habits of mind or body.
Physiologists tell us of the adaptation of brain structure to habitual lines of thought- i.e ., to on what is ailing game hockey, our habits” (Mason 1923: preface). As a good Victorian would, Charlotte Mason believed that while much value lay in the child’s communing with Nature, his own human nature musn’t be left unbridled but tightly reigned in by good habits. Heavily interested in the science of the times, Mason utilized the physiological theory that repeated thoughts leave an impression, or “rut,” upon the physical substance of the brain. She believed undesirable behaviors could be eradicated by replacing the thoughts with those that lead to homeworl, desirable behaviors, repeated and reinforced until good behavior was habitual. Evolutionary theory was first introduced during Mason’s lifetime and caused a revolution in thought, especially among the Church. Essay! It was common for Anglicans (of which Mason was one) to homeworl, espouse this theory, which led to a re-evaluation of the writing, Bible, ending in homeworl it being deemed errant, fallible and part myth.
Thus the very nature of man was at stake, with the essay on what game hockey, traditional Church teaching of original sin, or the homeworl, innate sinfulness of man, being challenged and rejected outright. Rather than viewing the child as born into discuss in essay writing sin, the opposite was propounded, that of the innocence of man at birth. All of this was supported by the belief in evolution as determining the origins of man. Mason’s #2 article states: “[Children] are not born either good or bad, but with possibilities for homeworl good and evil.” Founded upon this belief is Mason’s emphasis on the importance of the formation of and finance good habits, beginning in infancy. Rejecting the doctrine of heredity, she believed that by nature, the children of the working class need not necessarily inherit vicious tendencies, nor those of the educated class virtue, but that “education is stronger than nature” (Mason 1896: 159), and that habit is as ten natures (Mason 1886: 105, and many other places- should I cite them all Mark?). Accordingly, Charlotte Mason begins with infant discipline in the nursery, giving much direction regarding cleanliness, fresh air, daily bath, orderly playroom, regular bed times, regular meal times, and daily exercise.
Once the homeworl, child walks and thesis, talks, he must then be trained in certain manners and behaviors until these become habits. Though never a mother herself, Mason was optimistic about human evolution, the progression of humanity, and believed this notion of discipline of homeworl habit to be not only one of the leadership, keys to the character of each man, but to our progress as a race. Charlotte Mason’s article #8 is: “In the saying that EDUCATION IS A LIFE, the homeworl, need of intellectual and moral as well as of physical sustenance is implied. The mind feeds on ideas, and therefore children should have a generous curriculum” (Mason 1923: preface). “Therefore children should be taught, as they become mature enough to understand such teaching, that the chief responsibility which rests on them as persons is the acceptance or rejection of initial ideas. To help them in this choice we should give them principles of conduct and a wide range of the knowledge fitted for them” (Mason 1923: preface). Borrowing from Plato , whom she acknowledges numerous times, Charlotte Mason believed the proper nourishment for the child’s mind is ideas; not so much knowledge, but knowledge as it relates to ideas.
She believed children to essay game hockey, be naturally “equipped to deal with ideas” with “a natural appetite for knowledge which is informed with thought” (Mason 1923: 10). She called this “Desire of Knowledge,” or curiosity, the chief instrument of education. Thus, she found “explanations, questionings, simplifications” and the teacher’s “power of homeworl vivid presentation, apt illustration, able summing up and subtle questioning” to be interferences, hindrances, and bowdoin essay, unnecessary to homeworl, the child’s education. Combined with the desire for knowledge, Mason believed children come endowed with an unlimited “perfect power of attention” and that these two things alone are enough to mckinsey, motivate a child to learn. She believed incentives or external motivators such as “marks, prizes, places, rewards, punishments, praise [and] blame” to be detrimental and found no place for them in her schools. How, then, did she believe living ideas ought to be presented to children? Mason said “the only vital method of education appears to be that children should read worthy books, many worthy books” (Mason 1923: 12).
Mason advocated the use of first-hand sources, “living books,” on topics spanning the wide and varied liberal arts curriculum. She believed children should be in direct contact with real books, and read passages or chapters only homeworl once and then recount, or narrate, what they have read, either in oral or written form. Banking! Narrations were the evaluation tool for the teacher, making worksheets, quizzes and the “custom of giving homework…to be greatly deprecated” (Mason 1886: 147). She also called the “sing-song, talky-talky” of the teacher, and watered down “children’s books,” twaddle, and much favored the child reading and narrating good books for himself, instead. Charlotte Mason sums up her key ideas in her first volume (pp.177-178) as such: That the knowledge most valuable to the child is that which he gets with his own eyes and ears and homeworl, fingers (under direction) in the open air. That the claims of the schoolroom should not be allowed to encroach on the child’s right to long hours daily for exercise and investigation. That the child should be taken daily, if possible, to scenes- moor and meadow, park, common, or shore- where he may find new things to examine, and so observation should be directed to flower or boulder, bird or tree; that, in bowdoin essay fact, he should be employed in gathering the common information which is the basis for scientific knowledge.
That play, vigorous healthful play is, in its turn, fully as important as lessons, as regards both bodily health and brain-power. That the child, though under supervision, should be left much to himself- both that he may go to work in his own way on the ideas he receives, and also that he may be the homeworl, more open to natural influences. That the happiness of the child is the condition of his progress; that his lessons should be joyous, and writing research paper, that occasions of friction in the schoolroom are generally to be deprecated. And at the end of Charlotte Mason’s life, written in her last volume the year before her death (pp. 18-19): A child is a person with the spiritual requirements and capabilities of a person. Knowledge ‘nourishes’ the mind as food nourishes the body. A child requires knowledge as much as he requires food. He is furnished with the desire for homeworl Knowledge, i.e., Curiosity; with the power to apprehend Knowledge, that is, attention; with powers of mind to deal with Knowledge without aid from without- such as imagination, reflection, judgment; with innate interest in discuss in essay all Knowledge that he needs as a human being; with power to homeworl, retain and banking thesis, communicate such Knowledge; and to assimilate all that is necessary to him.
He requires that in most cases Knowledge be communicated to him in literary form; and reproduces such Knowledge touched by his own personality; thus his reproduction becomes original. The natural provision for the appropriation and assimilation of Knowledge is adequate and no stimulus is required; but some moral control is homeworl necessary to secure the act of attention; a child receives this in the certainty that he will be required to recount what he has read. Children have a right to banking thesis, the best we possess; therefore their lesson books should be, as far as possible, our best books. They weary of talk, and questions bore them, so that they should be allowed to use their books for themselves; they will ask for such help as they wish for. They require a great variety of knowledge, – about religion, the humanities, science, art; Therefore, they should have a wide curriculum, with a definite amount of reading set for each short period of study. The teacher affords direction, sympathy in studies, a vivifying word here and there, help in homeworl making of supplement experiments, etc., as well as the usual teaching in languages, experimental science and homeworl, mathematics.
Pursued under these conditions, “Studies serve for delight,” and the consciousness of our national game hockey daily progress is exhilarating to both teacher and children. Essex Cholmondeley (1960) The Story of Charlotte Mason 1842 – 1923 , London: Dent. Susan Schaeffer Macauley (1984) For the Children’s Sake: Foundations of homeworl Education for Home and School, Westchester, Illinois: Crossway Books. Marion Ney (1999) Charlotte Mason, Nottingham: Education Heretics Press. 100 pages. Mason, Charlotte. (1886) Volume 1: Home Education. The education and training of essay children under nine. Mason, Charlotte. (1896) Volume 2: Parents and Children. A practical study of educational principles. Mason, Charlotte. Homeworl! (1904) Volume 3: Home and School Education. The training of education of writing children over nine.
Mason, Charlotte. (1904) Volume 4: Ourselves, Our Souls and homeworl, Bodies. Book 1: Self knowledge. Book 2: Self direction. Mason, Charlotte. (1905) Volume 5: Some Studies in the Formation of Character. Mason also wrote five volumes of writing a medical research paper The Ambleside Geography Books (1880-92); six volumes of The Saviour of the World (1908-14) – a study of of the life and teaching of Jesus in verse; and: Mason, Charlotte. (1923) An Essay Towards a Philosophy of Education. (Wheaton, Illinois: Tyndale House Publishers, Inc., 1989) (Also published by The Scrivener Press, Oxford 1955)
St Martin’s College – The House of Education was renamed Charlotte Mason College and later became part of St Martin’s, Lancaster. This page gives some of the history. Armitt Collection and homeworl, Library: national centre for Charlotte Mason archives. Aimee Ruth Natal lives in a western suburb of Chicago with her husband and 2 young children. Her B. A. And Finance Thesis! degree is in education and she is currently working on a graduate degree through Fuller Theological Seminary.
She enjoys studying the history of education and homeworl, researching educational philosophies.
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essay speaking muet PENGAJIAN PERNIAGAAN STPM and MUET. Useful Phrases For Speaking Test 1. What happens during a MUET Speaking Test (Paper 2) · Enter the examination hall. · Check your identification with the examiner by homeworl, presenting your identity card and your examination slip. · Sit down as instructed by the examiner (Candidate A,B,C or D) · Read the question ONLY when you are allowed to in essay writing, do so. DO NOT write anything on homeworl the question paper.
· You can ask the banking thesis, examiner if you do not understand your task ONLY after the one minute reading time. · You are given 2 minutes to prepare for your individual presentation (Task A). DO NOT discuss with other candidates. · Individual presentation (Task A) starts (2 minutes each) with Candidate A, followed by Candidate B, C and D. · You are given 2 minutes to prepare for homeworl your group discussion (Task B). DO NOT discuss with other candidates. · Group discussion (Task B) starts. Discuss In Essay Writing! Anyone can start the discussion. Homeworl! You are given 10 minutes to discuss. · Leave the discuss writing, examination room quietly. DO NOT take anything out homeworl of the examination room except your IC and exam slip.
Tips and Techniques. § read the given situation carefully to essay on what our national, ensure you understand the homeworl, situation and phd research, task at hand. § write down the homeworl, key words and aspects you have to mckinsey, deal with in homeworl, the situation. § write down all your ideas using short notes or mind maps. § DO NOT attempt to write down all you want to say. § number or sequence your ideas in logical manner so that it shows good cohesion and maturity of thought. § begin by proposal marketing, greeting your audience. § speak clearly and loud enough for those in homeworl, the exam room to hear you. § aim for grammatical accuracy and speak in banking, complete sentences. § if you get stuck, rephrase what you want to homeworl, say in simple language. If still cannot continue, leave that idea and leadership essay, move on to the next point that you want to homeworl, talk about.
§ make eye contact with the examiner and supplement, other candidates. § DO NOT read from the homeworl, script. § You are only allowed slight hand movements but do not go overboard. § Remember to talk about the task at hand and DO NOT go out of point. § Be a team player and DO NOT monopolise the discussion. § Help, prompt and supplement, encourage others to contribute to homeworl, the discussion. § Show that you value what others had said by writing research paper, using appropriate expressions. § If you disagree with someone, express your disagreement politely and give your reasons.
§ Display your ability to manage a discussion by homeworl, indicating, maintaining and mckinsey, concluding a discussion. When listening to others. § take down short notes. § DO NOT write everything that is being said. § DO NOT do your own work. § DO NOT interrupt the speaker or pass comments. § Show interest in what your friends have to say by homeworl, using appropriate body language like nodding your head. Various Expressions used in asking for discuss writing and expressing opinions.
Asking for an opinion. What’s your opinion on… What do you think of… What are your views on … Do you have anything to add? I am certain that.. It is quite clear that.. I maintain that .. As far as I am concerned ..
From my point of homeworl, view .. I would say that … It seems to me that … I think it would be fair to say that … I totally agree with you. I see your point of view. That’s good/splendid idea. True. I am glad you say that. Yes, I feel the same way. I agree. Yes, I’m sure you are right.
I couldn’t agree with you more. Yes, I think that is in essay a wonderful idea. I’m sorry, I beg to differ. I absolutely disagree with you. I’m sorry but I have to disagree. I am afraid that I don’t agree. I don’t think so. I don’t see your point. Tentative Partial Agreement. I agree with you to a point.
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Some expressions used in making suggestions, recommendations and some possible responses. Wouldn’t it be a good idea to. I think we should. I feel that we should. Perhaps we could. It might be a good idea to. Have you ever thought of. Maybe we should. If I were you, I would.
Don’t you think we should. Yes, that’s a good idea. That would be nice. I think that is out of the question. I can foresee problems. I’m not convinced that this will work. The suggestions will give rise to other problems.
No. I don’t really like the homeworl, idea. No, I really don’t think so. I strongly recommend that. I strongly advise that. I would like to put forward a proposal that. I fully support. I am in favour of. I totally agree with.
I see no objection to that. I would certainly endorse. I am totally opposed to the proposal. I think that is out of the mckinsey, question. I can foresee problems.
I’m not convinced that this will work. This will give rise to homeworl, other problems. Various expressions that may be used in and finance, persuading someone. Have you considered. Do you realize that. Wouldn’t it be a good idea to. I wonder if you have thought of.
Maybe you should consider. It would be in homeworl, your own interest to. I can assure you that. You have no need to fear. I encourage you to. I am very sure there is no harm. I feel you should. I persuade you to. USEFUL PHRASES FOR MY SPEAKING TEST II. You need to organize your speech so that there is a smooth glow of phd research, ideas.
-Highlight main points of task. -Give definition (if any) -Include major points and elaborate on them. -Talk about the most important point first. -Use transition signals to connect ideas. -Reinstate your opinion.
-Summarize main points of the homeworl, topic. -Give advice or recommendations. Some expressions you may use when presenting information. Let me enlighten you on. Today, I would like to talk on. I have been asked to is ailing our national hockey, talk on. I would like to begin by. The reason I am here is to homeworl, talk about.
I would like to mention briefly. I would like to comment on. There are several points I would like to make. My first point is. Firstly / First of all. The next issue is. Furthermore/Moreover/ In addition. Let me give you an essay on what hockey example. Let us consider.
Let me conclude by saying. I would like to conclude by. When managing a discussion, you will. - Thank people for coming and then start a discussion. - introduce the subject or problem. - have to invite people to speak. - need to encourage group participation. - close/ conclude the homeworl, discussion.
Some expressions that you can use in managing a discussion. OPENING A DISCUSSION. Good morning, thank you for writing a medical paper coming. Thank you all for coming. Thanks for being here. May I have your attention please. INTRODUCING A SUBJECT.
First, let’s tackle the issue of. Today we are meeting to discuss. Let’s talk about the problem of. We’re here to talk about. MUET SPEAKING PRACTICE. · Good morning to the examiners and all my friends.
Thanks a lot sir.. thanks so much sir..it's help me to improve my speaking. thanks a lot for the useful tips. Homeworl! i really appreciate and feel grateful because i found this site. pray for leadership mckinsey me for homeworl this coming test. its very useful tips that i can learn and takes that as a good knowledge.. pray for me for this coming test b'coz i dun have confident to hockey, speaks to audiens..;) I got it. InsyaAllah i will do the homeworl, best. Thanks sir for the some information of MUET. thanks a lot sir.
really helpful. thank you..you were my last minute revision :) Very helpful info you having here. Tomorrow is my MUET Speaking test. So, I'm practicing what's here. Hope can do well.
Thank You Sir Kamal. thank you very for this usefull notes ! this will help me a lot ! Thank you..next week is my speaking test..wish me luck!on the other hand,does anyone know what kind of question will be on speaking test 2012 july session hehe. Thank you a lot for the tips. Very useful! thanx a lot cause give me some tips to do muet tomorrow..i'm so nervous right now.. Salam sejahtera rakan2 semua. My muet examination is around the corner. These tips are very useful and will help a lot. Discuss Writing! Thanks. thanks for these tips .its really usefull . Homeworl! again , thanks . thank u so much sir.. terima kasih cikgu kamal..ia sangat membantu.
Thanks, it's very helpful for my preparation to writing research, take MUET next week (^_^) thank you so much sir.. i hope the tips is useful for me ! thank you sir. (Y) very useful.. thank you very much.. Homeworl! =) Thank you sir for the tips written here. I will take MUET test next week as a private candidates who's already left school college for few years, thus, my English become worse. I will use the tips during the supplement, test. can we use wh question during MUET speaking test? its been 2014 and im here looking up a tips for the sake of muet. thanks for tha information given may Allah swt bless you cikgukamal. Thanks for homeworl the tips and leadership mckinsey, enlightenment as I'm sitting for the speaking test next week. Having hard time as never had any first hand experience or mock test for this.
And good luck to homeworl, those who will be taking that this 20th Feb '14. Thanks alot Cikgu.. Phd Research Proposal Marketing! got so much input here!! Wish me luck for tomorrow MUET speaking test.. thanks alot sir. Thank you. Homeworl! Having muet today! Great. Phd Research Proposal Marketing! Thank you. thank you Cikgu Kamal for homeworl your information ;) Hope those who will be sitting for leadership mckinsey June speaking test are able to speak excellently, fluently, or at least satisfactorily.
Don't Forget to practise speaking the English Language as much and as often as you can.. Thank you sir..you're short ideas and tips really helped me alot. thanks a lot en.kamal.. thanks a lot for muet speaking test tips..I would like to request permission to homeworl, reproduce these tips to my blog.. thanks alot. its very useful tips and make me more confident. Guys! I've try some tips form a website for the MUET test past November. And guess what? I've got Band 4 for writing the test.
Ohh. Really unbelievable. Homeworl! The real problem is speaking test. Try to train hard for essay on what is ailing hockey the speaking test. Homeworl! Lets start your conversation in banking and finance, English. You also can try this tips. http://tinyurl.com/muettips . Really worth buying lahh. Thanks sir for homeworl muet speaking test tips. its useful for me to take muet speaking test next week as a private candidates and make me more confident to essay supplement, get ready. wish me luck. thank you for the sharing sir. got speaking test tomorrow :)
A very useful tips , thanks a lot sir , it helped me a lot for homeworl my Muet speaking tomorrow ! It is a very useful tips. And Finance! thanks a lot sir. Homeworl! however im still 18 y/old. i need to prepare for my muet soon. i have to get band 6. MY ambition is DOCTOR. Thanks again sir kamal.. i love it.. i will be prepare from proposal marketing, now on.. Thank you sir.. Homeworl! u help me and my wife,, I will have my speaking test at tomorrow. pray for me guys. Research Paper! hope God bless us. thank for the idea. i have done my MUET 8yr ago. and homeworl, now i would like to phd research proposal marketing, continuing my study but it needs me to take the MUETs or IELTS again due to homeworl, expiring time limits. Is Ailing Hockey! i have a very low self esteem due to homeworl, my poor english performance especially in grammar and vocabulary aspect. just imagine for 8 years i didnt use English. im glad if you can share a few tips for writing a person like me. Homeworl! tq. Thank you cikgu kamal.
Exam is today 7.30am and i just read since 5.30am .. Haha best of luck on and finance me. tq sir kamal..i just found that today.. my exam test speking tomorrow..but i'm so nervousscared to do that..wish me luck for exam..;-) Tq a lot this notes really helps to prepare speaking test. its already been 5 years and counting but this blog is homeworl still the best and really helpful.
Really2 appreciate and bowdoin, thank you Mr. Akmal :) thank you sir, may god always bless you. Homeworl! wish me a million of luck for my muet test on on what is ailing game hockey 7 sept 2015 :) thank you so much sir for the good explanation for the muet speaking test. it help me a lot in understanding the homeworl, flow of the speaking test. Discuss Writing! may Allah bles you sir . all those tips are so good enough for me to revise back for my speaking test which is so soon!! thank you for all these really useful tips, sir! Thank you sir for the useful tips :) Thank you sir for homeworl all those useful tips. It really help me.
Thank you for the tips and also the guidance. Sy ade buat video psl pengalaman sy masa muet speaking n sikit tips https://youtu.be/MefqjizZ6wY. Sir i think the a medical research paper, tips was intellegent. Assalamualaikum.. I'm asking your permission to copy this one for my MUET revision. Thank you in advance! :)
Thank you Cikgu Kamal for sharing all those useful tips. Tq for homeworl the tips..wish me luck in discuss in essay, my muet speaking component tomorrow. Thank you Cikgu Kamal for the sharing. It's very useful to homeworl, me. thanks a lot! thank you very much sir. i`ll try my best to perform in my muet speaking test on monday!. thank you sir for the example.. i am taking my muet speaking test in coming tuesday. alhamdulilah, thank you so much cikgu kamal. Hi Cikgu, My name is Manoj Nandy. I am an author. I am now amidst developing a free English portal for Malaysian students, it's called duku.my. (duku is an abv for our national Dunia Ku..not the fruit :)). so, I was wondering if i can link the MUET writing skills to homeworl, your blog. Leadership Essay! I am more focused on homeworl Cambridge English..but your guidance here was indeed helpful.
Please let me know if it is okay for essay is ailing me to homeworl, link duku.my to your blog. My number is 018 9154521. Proposal Marketing! Perhaps you could Whatsapp me? Thanks for sharing the homeworl, tips. Our National Hockey! Really helpful. thank you sir. youre the best! IT's already 2.20 and homeworl, i'm still searching for proposal marketing MUET guide.luckily found this blog.TYVM. Waiting before sitiing for homeworl muet speaking now.
Sape2 ade soalan spot x utk speaking july 2016. Sape2 ade soalan spot x utk speaking july 2016. Sorry for banking late reply. You are free to use any material here. I'm doing this blog for helping nor only my students, but also for homeworl others as well. thanks a lot sir.. allow me to copy this as my reference for my muet exam on this wednesday. thank you so much sir :) Anda perlu skor Band tertinggi dalam exam MUET, tapi tak tahu caranya. Berita gembira buat anda. Saya terbaca satu website yang boleh membantu menyelesaikan masalah exam MUET yang anda hadapi sekarang.
Inn syaa, ia dapat membantu anda. Anda perlu skor Band tertinggi dalam exam MUET, tapi tak tahu caranya. Berita gembira buat anda. Writing! Saya terbaca satu website yang boleh membantu menyelesaikan masalah exam MUET yang anda hadapi sekarang. Homeworl! Inn syaa, ia dapat membantu anda. Thank you, sir. Discuss In Essay Writing! This really helps me in speaking skill. Im in quarantine room. Homeworl! i just read your tips before i handled my phone to writing research, the examiners. Thank you sir. Homeworl! It helps me too much. Im in quarantine room. In Essay! i just read your tips before i handled my phone to the examiners.
Thank you sir. It helps me too much. hi, is there anyone who got the spot question for 20/2/2017 muet speaking? Thank you so much sir for homeworl giving additional tips for us :) Insha Allah ,I will use it wisely for my upcoming test tomorrow.Wish me luck sir :) terima kasih cikgu. trima kasih cikgu. Tq cg.. btw.. sape2 yg faham cara tu.. boleh terangkan boleh Tak? Urget sb dah nak muet..plz.. sape2.
Mohon respon gusy.. coment nnti sy bagi cara nak contact..