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The Visual Microphone: Passive Recovery of Sound from Video

Researchers at the MIT Computer Science and Artificial Intelligence Laboratory, Microsoft Research, and Adobe Research have presented a technique for reconstructing an audio signal by analyzing minute vibrations of objects depicted in video. For example, the method can be used to extract intelligible speech from video of a bag of potato chips filmed from 15 feet away through soundproof glass. [more inside]
posted by jedicus on Aug 4, 2014 - 78 comments

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Two of these Java class names from the Spring framework are made up. One of them is real. Can you guess the real one?
posted by schmod on Apr 18, 2014 - 60 comments

CS in VN

Kids In Vietnam Are Crazy Good At Programming - '11th graders in Vietnam are so good at programming that they could easily pass an interview at Google' (via)
posted by kliuless on Mar 27, 2013 - 63 comments

24/7 de_dust, AWP disabled

The making of de_dust & de_dust2.
posted by Evernix on Nov 25, 2012 - 29 comments

Learnable Programming

Bret Victor: We often think of a programming environment or language in terms of its features -- this one "has code folding", that one "has type inference". This is like thinking about a book in terms of its words -- this book has a "fortuitous", that one has a "munificent". What matters is not individual words, but how the words together convey a message. Likewise, a well-designed programing system is not simply a bag of features. A good system is designed to encourage particular ways of thinking, with all features carefully and cohesively designed around that purpose.
posted by AceRock on Sep 27, 2012 - 69 comments

Magic the Gathering is Turing complete

The collectible card game Magic: The Gathering is Turing complete. [more inside]
posted by jedicus on Sep 11, 2012 - 58 comments

Gnitros Tuo Gnitros

Sorting Out Sorting [more inside]
posted by Ad hominem on Jul 28, 2012 - 22 comments

HURF DURF YOUTUBE COMMENTATOR

Turn all Youtube Comments into "HERP DERP" - for Firefox, Safari, Opera and Chrome.
posted by The Whelk on Jul 15, 2012 - 105 comments

Tiny Transactions on Computer Science

Tiny Transactions on Computer Science ...the premier venue for computer science research of 140 characters or less.
posted by Deathalicious on Apr 10, 2012 - 7 comments

Classic Nintendo Games are (NP-)Hard

Some (slightly generalized) classic Nintendo games are NP-Hard. [pdf] [more inside]
posted by albrecht on Mar 13, 2012 - 59 comments

Am I wasting my time organizing e-mail?

Am I wasting my time organizing e-mail? A study of e-mail refinding. (single link academic paper in .pdf.)
posted by escabeche on Jan 16, 2012 - 49 comments

Breaking the Coppersmith-Winograd barrier

For twenty years, the fastest known algorithm to multiply two n-by-n matrices, due to Coppersmith and Winograd, took a leisurely O(n^2.376) steps. Last year, though, buried deep in his PhD thesis, Andy Stothers discussed an improvement to O(n^2.374) steps. And today, Virginia Vassilevska Williams of Berkeley and Stanford, released a breakthrough paper [pdf] that improves the matrix-multiplication time to a lightning-fast O(n^2.373) steps. [via] [more inside]
posted by albrecht on Nov 29, 2011 - 50 comments

Eleven Equations True Computer Science Geeks Should (at Least Pretend to) Know

Eleven Equations True Computer Science Geeks Should (at Least Pretend to) Know [more inside]
posted by Deathalicious on Nov 29, 2011 - 141 comments

Stanford online courses

Stanford has announced new online courses for January 2012. Like the three courses currently running (1,2,3), these courses are free, open to the general public, and have no required textbook (previously). [more inside]
posted by -jf- on Nov 22, 2011 - 28 comments

CS221

Stanford's 'Introduction to Artificial Intelligence' course will be offered free to anyone online this fall. The course will be taught by Sebastian Thrun (Stanford) and Peter Norvig (Google, Director of Research), who expect to deal with the historically large course size using tools like Google Moderator. [more inside]
posted by jeffburdges on Aug 6, 2011 - 38 comments

Regular Expressions Can Be Simple and Fast

Russel Cox, one of the people behind Google's new programming language Go, has written a three part series on regular expressions. It's a nice mix of computer science theory, programming, and history: Regular Expression Matching Can Be Simple And Fast, Regular Expression Matching: the Virtual Machine Approach, and Regular Expression Matching in the Wild.
posted by chunking express on Mar 17, 2010 - 57 comments

How To Program

A free computer-programming course on reddit. Click "prev" for more lessons. 113 lessons so far.
posted by grumblebee on Oct 24, 2009 - 89 comments

I love the smell of alkali metals in the morning...

The dog's nuts of the periodic table.
posted by ozomatli on May 30, 2006 - 41 comments

Yo, books!

Yo, books! Absolute masses of maths, physics, and CS books chez bhargav. Via Madame Martin
posted by Wolof on Mar 29, 2005 - 7 comments

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