41. Entropy Bound entropy Bound. physical reflections and refractions at the boundaries of science and culture but really, things can only get so out of hand. http://entropybound.blogspot.com/

Entropy Bound physical reflections and refractions at the boundaries of science and culture ...but really, things can only get so out of hand. Tuesday, February 26, 2008 Lord of the Ring [UPDATE - drat, NBC!] How did I miss this? Just because I'm in India, people don't tell me things? Here's Peter Fisher from MIT on Conan O'Brien[!] trying to help Conan break his ring-spinning record. First they try removing the ambient air... And then they try Vaseline (wonder if Matthew Barney is watching) and finally Teflon: But I have never heard the phrase "Time Projection Chamber" used to such powerful effect. The wacko fringe will be studying this one for years. Posted by Peter at 11:03 AM 0 comments Friday, February 22, 2008 Experimental Physics Yes, folks, we're experimenting here with new ways of publishing talks online. Sorry for the large download...[UPDATE: the flash file was too big removed!] Posted by Peter at 9:00 AM 0 comments Wednesday, February 20, 2008 Interlude But don't think I didn't do anything besides work on my trip: we took advantage of the long weekend and did a little skiing in Verbier, Switzerland. While neither K nor I are expert skiers, and the snow was a bit thin and icy, it was a blast to spend two full days in the mountains surrounded by the Swiss Alps. Roland Collombin " (named for, and owned by, the

42. What Is Entropy? entropy describes the tendency for systems to go from a state of higher organization to a state of lowest organization on a molecular level. http://www.wisegeek.com/what-is-entropy.htm

What is Entropy? ad_unit_target='mainAdUnit'; X Close this window Entropy describes the tendency for systems to go from a state of higher organization to a state of lowest organization on a molecular level. In your day-to-day life, you intuitively understand how entropy works whenever you pour sugar in your coffee or melt an ice cube in a glass . Entropy can affect the space into which a substance spreads, its phase change from solid to liquid to gas, or its position. In physics , entropy is a mathematical measurement of a change from greater to lesser potential energy, related to the second law of thermodynamics. Entropy comes from a Greek word meaning, "transformation." This definition gives us insight into why things seemingly transform for no reason. Systems can only maintain organization on a molecular level as long as energy is added. For example, water will boil only as long as you hold a pan over flames. You're adding heat, a form of kinetic energy, to speed up the molecules in the water. If the heat source is removed, we all can guess that the water will gradually cool to about room temperature. This is due to entropy, because the water molecules tend to use up their accumulated potential energy, release heat, and end up with a lower potential energy. Temperature isn't the only transformation involved in entropy. The changes always involve moving from disequilibrium to equilibrium, consistent with moving to decreasing order. For instance, molecules always spread out to uniformly fill a container. When we drip food coloring in a clear glass of water, even if we don't stir it, that united concentration of a drop will gradually spread out until every part of the water has the same density of color.

43. American Entropy American entropy is dedicated to the disruption and discrediting of neoconservative actions and the extreme ideals of the religious right. http://www.americanentropy.blogspot.com/

@import url("http://www.blogger.com/css/blog_controls.css"); @import url("http://www.blogger.com/dyn-css/authorization.css?targetBlogID=6884291"); var BL_backlinkURL = "http://www.blogger.com/dyn-js/backlink_count.js";var BL_blogId = "6884291"; American Entropy is dedicated to the disruption and discrediting of neoconservative actions and the extreme ideals of the religious right. my del.icio.us Previous Posts SC Dem Debate Live Thread Myrtle Beach Debate II The Democratic Primary Debate in Myrtle Beach, SC Another Republican aiding and abetting the enemy? ... American Entropy 21 January 2008 SC Dem Debate Live Thread Has been started here and here Posted by Geoff 8:05 PM Blogroll AE Email Myrtle Beach Debate II So I'm in the press filing center waiting to eat our free meal. I'm surrounded by the "liberal media" if you listen to the goofball behind me. An anti-Hillary guy is running around here trying to push the Central America-CIA-cocaine connection... Anyway. This debate is crucial. The polls predict an Obama win Saturday but you have to remember New Hampshire. The most recent polls have Obama at around 45%, Hillary in the 30s and Edwards in the teens. Grain of salt. I'd be interested in a poll of people in SC that are undecided going into this debate and the primary.

44. JCE 1999 (76) 1385 [Oct] Shuffled Cards, Messy Desks, And Disorderly Dorm Rooms Critical review of popular use of the concept of entropy, in the Journal of Chemical Education. http://jchemed.chem.wisc.edu/journal/Issues/1999/Oct/abs1385.html

Subscriptions Software Orders Support Contributors ... October In the Classroom Shuffled Cards, Messy Desks, and Disorderly Dorm Rooms - Examples of Entropy Increase? Nonsense! Frank L. Lambert La Verne, CA 91750 October 1999 Vol. 76 No. 10 p. 1385 Table of Contents Supplements in This Issue Previous Article Next Article ... Full Text (PDF) Full Text The order of presentation in this article is unusual; its conclusion is first. This is done because the title entails text and lecture examples so familiar to all teachers that most may find a preliminary discussion redundant. Conclusion The dealer shuffling cards in Monte Carlo or Las Vegas, the professor who mixes the papers and books on a desk, the student who tosses clothing about his or her room, the fuel for the huge cranes and trucks that would be necessary to move the nonbonded stones of the Great Pyramid of Cheops all across Egypteach undergoes physical, thermodynamic entropy increase in these specific processes. The thermodynamic entropy change from human-defined order to disorder in the giant Egyptian stones themselves, in the clothing and books in a room or papers on a desk, and in the millions of cards in the world's casinos is precisely the same: Zero. K. G. Denbigh succinctly summarizes the case against identifying changes in position in one macro object or in a group with physical entropy change (

45. Entropy, Redundancy And Inequality Measures A comparison of different measures of income wealth inequality, with a focus on entropy measures. Shows changes in the global disparity of income using http://poorcity.richcity.org/

Inequality Measures Atkinson inequality Z Atkinson = 1-Z MacRae i=1..N (E i ln(A i /E i ))/E total E total /A total nosniktA inequality Z nosniktA i=1..N (A i ln(E i /A i ))/A total A total /E total Theil redundancy R Theil = -ln(1-Z Atkinson ) = -ln(Z MacRae total /E total i=1..N (E i ln(A i /E i ))/E total liehT redundancy R liehT = -ln(1-Z nosniktA total /A total i=1..N (A i ln(E i /A i ))/A total Symmetric redundancy R sym = -ln(1-Z sym Z Plato artanh(Z Plato = (R Theil Theil Theil +R liehT i=1..N ln(E i /A i E i /E total -A i /A total Symmetric inequality Z sym = 1-exp(-R sym Atkinson (1-Z nosniktA i=1..N ln(A i /E i E i /E total -A i /A total Hoover inequality Z Hoover i=1..N E i /E total -A i /A total Coulter inequality Z Coulter i=1..N E i /E total -A i /A total Gini inequality sort data: E i /A i i-1 /A i-1 Z Gini i=1..N k=1..i (E k )-E i A i )/(E total A total EU inequality 1:a = (1-Z Gini )/(1+Z Gini is the SOEP "equality parameter" therefore: Z Europe Z Gini /(1+Z Gini Plato inequality inverse functions: Z sym = 1-((1-Z Plato )/(1+Z Plato Z Plato R sym Z Plato artanh(Z Plato approximation: Z Plato sym (0.06*Z sym sym fast recursion: initialize: Z Plato sym (0.06/exp(R

46. Entropy Liberation Front Providing a collection of Tcl/Tk plugins and sources as well as links to other resources. http://www.elf.org/

Stuff Moons Puzzle Earth Ringtones Doodle ... Author The entropy liberation front The history of the universe is a history of entropy liberation, the whole of creation aches with anticipation of the new. Ffidl - a Tcl/Tk extension that allows Tcl scripts to construct their own bindings to shared libraries, updated to version 0.6 thanks to Daniel A. Steffen. Moons - A new implementation of my lunar calendar built with javascript and svg. Puzzle Earth. The pieces keep changing. A Hundred Words for Swindle. I've been lately receiving "You are the target of investigation" e-mails from Word of Mouth Research dot Com and Word of Mouth Info dot Biz. Anyone who expects to get useful information through these websites should spend more time researching the scammers through google. There's a reason why our American English is blessed with hundreds words for swindle. Perhaps not a "good" reason as in a morally acceptable reason, but a "good" reason as in it was not a random event that those words became part of our vocabulary. Ringtones.

47. Entropy Technical note The entropy is actually k ln( combinations), where k is called Boltzmann s constant and ln means the natural logarithm. http://www.upscale.utoronto.ca/GeneralInterest/Harrison/Entropy/Entropy.html

Entropy Click here to go to the UPSCALE home page. Click here to go to the Physics Virtual Bookshelf Click here to go to the JPU200Y home page. Author This document was written in February 1999 by David M. Harrison, Department of Physics, University of Toronto, mailto:harrison@physics.utoronto.ca . This is version 1.7, date (m/d/y) 09/17/02. This material may be distributed only subject to the terms and conditions set forth in the Open Content License, v1.0 or later (the latest version is presently available at http://opencontent.org/opl.shtml INTRODUCTION "A theory is the more impressive the greater the simplicity of its premises, the more varied the kinds of things that it relates and the more extended the area of its applicability. Therefore classical thermodynamics has made a deep impression on me. It is the only physical theory of universal content which I am convinced, within the areas of the applicability of its basic concepts, will never be overthrown." Einstein (1949) DEFINING THE ENTROPY We shall define the entropy in three different yet equivalent ways.

48. Entropy… Introduction to Poetry « entropy Introduction to Poet on Philosophy Ed Dellian on Philosophy Language .. kimmikat on Contact.. Barbary Chaapel http://mybanyantree.wordpress.com/

var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www."); document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E")); Inspirations !! Mindspace.. Contact.. Mar The joy of boredom By Entropy Comment Categories: Thought Provoking Tags: Boredom Hyperconnectivity psychology A DECADE AGO, those monotonous minutes were just a fact of life: time ticking away, as you gazed idly into space, stood in line, or sat in bumper-to-bumper traffic. In one of the most famous scenes in literature, for instance, boredom takes time. Marcel Proust describes his protagonist, Marcel, dunking a madeleine cookie into his teacup. Mar Time Out of Mind By Entropy Comment Categories: Meditation - Introspection and Thought Provoking Tags: Time In 1784, Benjamin Franklin composed a satire, “Essay on Daylight Saving,” proposing a law that would oblige Parisians to get up an hour earlier in summer. By putting the daylight to better use, he reasoned, they’d save a good deal of money — 96 million livres tournois — that might otherwise go to buying candles. Now this switch to daylight saving time (which occurs early Sunday in the United States) is an annual ritual in Western countries. Even more influential has been something else Franklin said about time in the same year: time is money. He meant this only as a gentle reminder not to “sit idle” for half the day. He might be dismayed if he could see how literally, and self-destructively, we take his metaphor today. Our society is obsessed as never before with making every single minute count. People even apply the language of banking: We speak of “having” and “saving” and “investing” and “wasting” it.

49. Entropy And Information Theory This site provides the current version of the book entropy and Information Theory by R.M. Gray in the Adobe portable document format (PDF). http://ee.stanford.edu/~gray/it.html

Entropy and Information Theory 27 January 2007 This site provides the current version of the book Entropy and Information Theory by R.M. Gray in the Adobe portable document format (PDF). This format can be read from a Web browser by using the Acrobat Reader helper application, which is available for free downloading from Adobe The current version is a slightly revised version of the second printing (1991) of the Springer-Verlag book of the same name, which is now out of print. This corrected version is made available with the permission of Springer-Verlag and it hopefully will eventually lead to a more serious revision further developing the properties of relative entropy. Permission is hereby given to freely print and circulate copies of this book so long as it is left intact and not reproduced for commercial purposes. The author would welcome all typos and comments.

50. Entropy.net maps http://entropy.net/

maps projects brianr maps projects brianr

51. Beats Entropy Vote for Beats entropy at the Canadian Bloggies. January 17, 2008. You can vote for Beats entropy in the Humor category and Best Group Blog category http://beatsentropy.com/

var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www."); document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E")); Beats Entropy http://beatsentropy.com/ Passive Depressive #133 March 13, 2008 Posted by thekenji Filed in Denny Passive Depressive Passive Depressive tags comic ... Political Peril: A Beats Entropy special report ; Ralph Nader March 12, 2008 By design Beats Entropy is largely non partisan, and broadly irrelevant, in the scope of world affairs. Neither are we pundits, nor participants, in the political process. To be honest most of are partially illiterate, and at least one a registered sex offender . While this keeps us from voting, it does not dispel our fascination with the surreal disgrace poetry that is American Politics. More specifically: the presidential race. Thus we have decided to enter the polemic, and weigh in on the candidates in a substantive manner.  In the past I have made my preferences known , but you can be assured I am professional enough to put that aside and give a unbiased analysis on the pieces in play. Above all I am a journalist, and I will not shame the oath I swore all those months ago.

52. Maximum Entropy This page contains pedagogicallyoriented material on maximum entropy and exponential models. The emphasis is towards modelling of discrete-valued http://www.cs.cmu.edu/~aberger/maxent.html

MaxEnt and Exponential Models This page contains pedagogically-oriented material on maximum entropy and exponential models. The emphasis is towards modelling of discrete-valued stochastic processes which arise in human language applications, such as language modelling. All links point to postscript files unless otherwise indicated. Tutorials An online introduction to maxent This is a high-level tutorial on how to use MaxEnt for modelling discrete stochastic processes. The motivating example is the task of determining the most appropriate translation of a French word in context. The tutorial discusses the process of growing an exponential model by automatic feature selection ("inductive learning," if you will) and also the task of estimating maximum-likelihood parameters for a model containing a fixed set of features. Convexity, Maximum Likelihood and All That This note is meant as a gentle but comprehensive introduction to the expectation-maximization (EM) and improved iterative scaling (IIS) algorithms, two popular techniques in maximum likelihood estimation. The focus in this tutorial is on the foundation common to the two algorithms: convex functions and their convenient properties. Where examples are called for, we draw from applications in human language technology.

53. Maximum Entropy Online Resources Workshops, tutorials, papers and software related to maximum entropy. http://omega.albany.edu:8008/maxent.html

Maximum Entropy Online Resources Workshops, tutorials, papers, software or just about anything that I can find online related to the subject of Maximum Entropy. If you know of a URL that should be here but it isn't, please send me email at carlos@math.albany.edu http://www.ipp.mpg.de/maxent04/ Max-Planck-Institute Garhing/Munchen July, 25-28 2004. Email: maxent04@ipp.mpg.de MaxEnt2003: http://maxent23.org Jackson Hole, Wyoming. August 3-8, 2003. Email: gerickson@boisestate.edu University of Idaho. Moscow. USA Johns Hopkins University. Baltimore. USA Paris, France Boise State University, Idaho. Max-Planck-Institut fur Plasmaphysik. Garching/Munchen/Germany. Pictures Joint meeting with ISBA MaxEnt96: Preliminary Announcement South Africa meeting. There is a page in Zaire at http://gsd.is.co.za/maxent Official MaxEnt95 page at Los Alamos. V. Kashyap's report on MaxEnt95 Dr. Kashyap's personal report of his trip to MaxEnt95 but with relevant information about MaxEnt in general and some links. XIII International Workshop on Maximum Entropy and Bayesian Methods. General information, abstracts, schedules, etc... MaxEnt/STA at Cambridge UK An idiosyncratic hybrid page of Maximum Entropy and Space Time Algebra with general information about the Cambridge group.

54. Enemy Of Entropy Enemy of entropy. Home About Site Map Photos Library Quotes Miscellany Posts Feed Comments. And then I said A stumble may prevent a fall. http://technomom.com/

@import url(http://technomom.com/wp-content/themes/experimental-silver-10/style.css); Enemy of Entropy Home About Site Map Photos ... Miscellany Accessibility Widget A A A A Madeleine L'Engle Tags birthday Blogging Books children ... Writing Family Projects Academy Caritas ChatOmbre Dragonkin Fireheart Foundry ... The Sam Bear Cast Friends After Serenity Bryan Artworks Domestic Goddess Chronicles Lush ... Word+Candle+Mage My Sites Cyberstalked: The Light of Truth Cynthia Armistead Fibrant Living Heartsong Handicrafts ... Powered by RingSurf March 2008 S M T W T F S Meta Login Entries RSS WordPress.org ... WordPress using Experimental Silver by Daria Black of Webernet Architect Design Studio My opinions are mine alone, and do not represent those of any employer, client, family member, significant other, house plant or other entity unless otherwise stated. 51 queries. 2.165 seconds. Mar 14 Mouse-Mouse and WordPress Oddity Leave a comment Link to this Geekery I will not provide a photo, but I figure this pointing device SXSW to please return him. As slick as WordPress Plugin Repository I tried Time Zone Calculator , anyway.

55. An Introduction To The Maximum Entropy Method The maximum entropy method selects one image from this `feasible set of images that describe the data equally well. Two sample mem inversions are given. http://cmm.cit.nih.gov/maxent/letsgo.html

56. I Want Your Milkshake, You Want My Heart //09/03/07. Music Starfield. School s started so I won t be updating very often. But lots of new affiliates and SIX new art pieces have been added, http://entropy.headlock.ws/

Music: Starfield School's started so I won't be updating very often. But lots of new affiliates and SIX new art pieces have been added, feat Liv Tyler, Scarlett Jo, 2 Wallies, (Harry Potter and Elizabethtown) and two versions of a piece I did on Draco Malfoy. Isn't he just awesome? Email Tag LJ var sc_project=2815694; var sc_invisible=0; var sc_partition=28; var sc_security="f4578558";

57. Entropy On The World Wide Web The purpose of these pages is to promote the appreciation,understanding, and applications of entropy in its many forms. Here you will finda collection of http://www.math.uni-hamburg.de/home/gunesch/entropy.html

Entropy on the World Wide Web The chinese character for entropy These pages are now maintained by Roland Gunesch (Mathematics, University of Hamburg). Claude Shannon , Inventor of information theory and pioneer of entropy theory, dies at age 84. Read this obituary that appeared in the New York Times. Welcome! The purpose of these pages is to promote the appreciation, understanding, and applications of entropy in its many forms. Here you will find: (for each of the following areas) a brief overview of the role of entropy, a collection of links to on-line expository articles and textbooks, and suggestions for further off-line reading: information and coding theory dynamical systems logic and the theory of algorithms statistical inference and prediction ... the humanities and social sciences links to relevant journals information about entropy-related conferences links to relevant research groups links to entropy-related software and more Credits These pages were originally created by Chris Hillman. He gets credit for creating practically all of the content seen here. Since these pages were not originally created by me (R.G.) but by Chris Hillman (see "Credits" above), I have not verified all information contained in these pages. Also, I might in principle disagree with any opinion or judgement stated in these pages. Should you believe that anything you see here is incorrect, I am happy to receive your comments.

58. The Cross-Entropy Method Pioneered in 1997 by Reuven Rubinstein as an efficient method for the estimation of rareevent probabilities, the cross-entropy (CE) method has rapidly http://www.cemethod.org/

The Cross-Entropy Method About About Tutorial ... Software About This web site is a collection of information and links about the Cross-Entropy method. Pioneered in by Reuven Rubinstein as an efficient method for the estimation of rare-event probabilities, the cross-entropy (CE) method has rapidly developed into a powerful and versatile technique for both rare-event simulation and combinatorial optimisation The method derives its name from the cross-entropy ( or Kullback-Leibler) distance - a well known measure of "information", which has been successfully employed in diverse fields of engineering and science, and in particular in neural computation , for about half a century. The CE method is an iterative method, which involves the following two phases: Generation of a sample of random data (trajectories, vectors, etc.) according to a specified random mechanism. Updating the parameters of the random mechanism, on the basis of the data, in order to produce a "better" sample in the next iteration. The significance of the cross-entropy concept is that it defines a precise mathematical framework for deriving fast, and in some sense "optimal" updating/learning rules.

59. MIT OpenCourseWare | Electrical Engineering And Computer Science | 6.050J Inform Maximumentropy formalism. Thermodynamic equilibrium, temperature. The Second Law of Thermodynamics. Quantum computation. From the course home page Course http://ocw.mit.edu/OcwWeb/Electrical-Engineering-and-Computer-Science/6-050JInfo

skip to content Home Courses Donate ... Electrical Engineering and Computer Science Information and Entropy 6.050J / 2.110J Information and Entropy Spring 2003 U.S. National Library of Medicine Course Highlights This course site features a complete set of lecture notes and problem sets , in addition to other materials used in the course's twelve topical units discussion group for this course. Course Description *Some translations represent previous versions of courses. Staff Instructors: Prof. Seth Lloyd Prof. Paul Penfield Course Meeting Times Lectures: One session / week 1 hour / session Recitations: One session / week 1 hour / session Level Undergraduate *Translations Chinese (Simplified) Download this course Feedback Send feedback on this course. RSS Feeds Site Map Your use of the MIT OpenCourseWare site and course materials is subject to our Creative Commons License and other terms of use.

60. ONLamp.com -- Calculating Entropy For Data Mining Paul Meagher explains univariate entropy while analyzing web logs with PHP. http://www.onlamp.com/pub/a/php/2005/01/06/entropy.html

Sign In/My Account View Cart Articles Weblogs ... MySQL Conference and Expo April 14-17, 2008, Santa Clara, CA Listen Print Discuss Subscribe to PHP ... Subscribe to Newsletters Calculating Entropy for Data Mining by Paul Meagher Information theory (IT) is a foundational subject for computer scientists, engineers, statisticians, data miners, biologists, and cognitive scientists. Unfortunately, PHP currently lacks software tools that would make it easy to explore and/or use IT concepts and methods to solve data analytic problems. This two-part series aims to remedy this situation by: Introducing you to foundational information theory concepts. Implementing these foundational concepts as classes using PHP and SQL. Using these classes to mine web data. This introduction will focus on forging theoretical and practical connections between information theory and database theory. An appreciation of these linkages opens up the possibility of using information theory concepts as a foundation for the design of data mining tools. We will take the first steps down that path. Univariate and Bivariate Entropy The central concept of this series is entropy The goal of this article is to explore the descriptive uses of entropy in the context of summarizing web access log data. You will learn how to compute entropy for a single database column of values (i.e., univariate entropy) and what the resulting entropy score means. The goal is to obtain a practical appreciation for what entropy measures in order to tackle inference problems that arise in more complex bivariate and multivariate contexts.

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