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I Can Tell By The Pixels

Visualizing Algorithms shows you how computer algorithms can be represented visually, leading to better understanding of how the algorithms work:

"Have you ever implemented an algorithm based on formal description? It can be hard! Being able to see what your code is doing can boost productivity. Visualization does not supplant the need for tests, but tests are useful primarily for detecting failure and not explaining it. Visualization can also discover unexpected behavior in your implementation, even when the output looks correct."
posted by quiet earth on Jun 26, 2014 - 29 comments

prioritize and continue to strengthen friendship with Joe and Dennis

MetaFilter is well acquainted with numbers stations (previously with previouslies inside of that). Well, they may just have migrated to YouTube. [more inside]
posted by theartandsound on Apr 25, 2014 - 46 comments

A SAT Attack on the Erdos Discrepancy Conjecture

Computers are providing solutions to math problems that we can't check - "A computer has solved the longstanding Erdős discrepancy problem! Trouble is, we have no idea what it's talking about — because the solution, which is as long as all of Wikipedia's pages combined, is far too voluminous for us puny humans to confirm." (via; previously ;)
posted by kliuless on Apr 12, 2014 - 24 comments

Violent Thrillers About Cats for Ages 8 to 10

If you use Netflix, you've probably wondered about the specific genres that it suggests to you. Some of them just seem so specific that it's absurd. Emotional Fight-the-System Documentaries? Period Pieces About Royalty Based on Real Life? Foreign Satanic Stories from the 1980s? ... Through a combination of elbow grease and spam-level repetition, we discovered that Netflix possesses not several hundred genres, or even several thousand, but 76,897 unique ways to describe types of movies.
posted by Horace Rumpole on Jan 2, 2014 - 63 comments

The Sound of Sorting

15 Sorting Algorithms in 6 Minutes [more inside]
posted by Confess, Fletch on Nov 4, 2013 - 43 comments

Predatory algorithms & Ultrafast Extreme Events

Abrupt rise of new machine ecology beyond human response time
posted by Tom-B on Sep 11, 2013 - 71 comments

Mesmerizing visualizations of genetic algorithms

Genetic algorithms are useful for solving all kinds of problems and their implementations can be quite mesmerizing to watch. Re-producing Mona Lisa, a human face or bull cave painting. Playing Super Mario, Tetris and more Tetris. Simulating a soccer team, fishes, ant colony or Santa's flight path. A documentary about using genetic algorithms in design, e.g. deciding the optimal antenna placement on a Humvee, creating search and destroy behavior for UAVs and designing more efficient wind turbine blades. Should probably learn how to stand and jump and stand again before driving.
posted by Foci for Analysis on Mar 24, 2013 - 6 comments

Computerized Math, Formal Proofs and Alternative Logic

Using computer systems for doing mathematical proofs - "With the proliferation of computer-assisted proofs that are all but impossible to check by hand, Hales thinks computers must become the judge." [more inside]
posted by kliuless on Mar 16, 2013 - 25 comments

What if Skynet just wanted to piss us off?

Keep Calm and Understand the Process. The advent of algorithm-driven sales and product-on-demand delivery systems (think Cafepress, for one) can have some unexpected results when the output is not checked carefully enough. [more inside]
posted by ChrisR on Mar 3, 2013 - 114 comments

"The data that we actually used."

Rosalind.info is a website with bioinformatics problems inspired by Project Euler (previously, previouslier.) [more inside]
posted by lizarrd on Dec 8, 2012 - 21 comments

The Genius of Nature

Bees and a species of bird can solve the traveling salesman problem "It’s Saturday; you’ve got errands to run. Your spouse wants bread from the bakery, you need to pick up the dry cleaning, your kids need new shoes, and you’ve got a dentist appointment. None of this is any fun, so you might as well do it as quickly as possible by calculating the fastest and most efficient route that takes you to each stop... Menger and Whitney both discovered that the number of possible routes between stops increases exponentially with each additional destination. In a typical model, for instance, three stops yield six routes, while eight stops yield 40,320... By setting up five artificial flowers in a pentagon shape and tracking each bee’s path, researchers discovered that every bee optimized its route, visiting the highest-reward flowers in the shortest possible amount of time." [more inside]
posted by bookman117 on Nov 19, 2012 - 34 comments

The Failure of Judges and the Rise of Regulators

The Control Revolution And Its Discontents - "the long process of algorithmisation over the last 150 years has also, wherever possible, replaced implicit rules/contracts and principal-agent relationships with explicit processes and rules."
posted by kliuless on Feb 23, 2012 - 25 comments

“meaningful adjacencies”

“It was a computer-science problem, but it was also a big, crazy typography problem,” An algorithm for the names at the 9/11 memorial.
posted by troika on May 9, 2011 - 39 comments

Nifty Audio Projects

Nifty audio projects from Paris Smaragdis, including fascinating method of extracting individual audio samples (say a guitar solo) from a mix by humming the part. [6.4 mb mp4] [via AskMe]
posted by odinsdream on Apr 2, 2011 - 12 comments

Exact String Matching Algorithms

Exact String Matching Algorithms - Source code for Boyer-Moore, Horspool and other string-matching algorithms, along with visualizations of their operation
posted by Blazecock Pileon on Oct 26, 2010 - 15 comments

Delightful Puzzles

A gathering of puzzles including many old chestnuts but also perhaps one or two you haven't met before.
posted by Wolfdog on Dec 16, 2009 - 29 comments

Musical sorting algorithms

Musical sorting algorithms. [via]
posted by Combustible Edison Lighthouse on Aug 21, 2009 - 23 comments

High Frequency Trading

High Frequency Trading The Algorithmic Trading animals have been let loose. (via) [more inside]
posted by manny_calavera on Aug 5, 2009 - 39 comments

Cinematch++

Over three years later, has the Netflix Prize been won? Today our team submitted our solution to the Netflix Prize, resulting in a score of .8558, which corresponds to an improvement over Netflix Cinematch algorithm of 10.05%. This is the first submission in the competition to break the 10% barrier and sets off a 30 day period where all competitors are invited to submit their best and final solutions. (Previously.) [more inside]
posted by youarenothere on Jun 26, 2009 - 58 comments

What is the largest prime factor of the sum of the favorited comments from all fibonacci-numbered MeFites?

"Project Euler is a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve. Although mathematics will help you arrive at elegant and efficient methods, the use of a computer and programming skills will be required to solve most problems."

Started in 2001 as a sub-section of Maths Challenge, it has since grown large enough to become its own entity. It now boasts over 200 problems, many of them insanely difficult. [more inside]
posted by mystyk on Oct 13, 2008 - 31 comments

Big book of algorithms

If you could use a great big free handbook of discrete math and algorithms, Jörg Arndt's fxtbook wants to be your friend. Plain text table of contents to whet your appetite.
posted by Wolfdog on Mar 5, 2008 - 11 comments

"Extracting Beauty From Chaos"

Skhoinarion uses his own custom software to make mathematical art, ranging from the architectural to the strikingly natural. His animations feature digital and digitally-manipulated analog content and are also quite remarkable.
posted by retronic on Dec 28, 2007 - 8 comments

Gerrymandered

The shortest-splitline algorithm for drawing N congressional districts. You can seee examples of their unbiased district-drawing algorithm in action compared with the gerrymandered districts drawn by politicians.
posted by chunking express on Jul 20, 2007 - 38 comments

Media and Algorithms and Home Made Music.

Screenvader. Media and algorithms and home made music. [flash]
posted by stavrosthewonderchicken on Mar 5, 2007 - 9 comments

Math Porn!

Those are dirty numbers!! "The images in this room are created entirely from mathematical algorithms. If you find them offensive in any way, all I can say is that beauty (or obscenity) is in this case most certainly in the eye of the beholder." (via)
posted by JPowers on Jun 11, 2006 - 24 comments

Algorhythms

Self-organization leads to swarm synthesis
posted by Rothko on Jan 31, 2006 - 10 comments

Intelligent Design by Trial and Error

A more efficient microbe genome. A more efficient sorting algorithm. A more efficient keyboard layout.
posted by fatllama on Aug 26, 2005 - 8 comments

Euler? I never even met her!

Project Euler is a running contest of programming challenges to hone your algorithm skills. "Each problem is designed according to a 'one-minute rule', which means that although it may take several hours to design a successful algorithm with more difficult problems, an efficient implementation will allow a solution to be obtained on a modestly powered computer in less than one minute."
posted by Wolfdog on Aug 20, 2005 - 11 comments

A sort of vagabonds, rascals, and runaways

Shakespearean combsort. (PS)
posted by Wolfdog on Jun 2, 2005 - 8 comments

MathPorn

Algorithmic Obscenity [maybe nsfw?] Who knew math could be this much fun? [via BoingBoing]
posted by srboisvert on Nov 15, 2003 - 5 comments

Israelis (who else?) prepare to bring a new life into the world.

Israelis (who else?) prepare to bring a new life into the world. One that will hopefully pass the Turing test.
posted by o2b on Aug 21, 2001 - 9 comments

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