timtyler comments on Magical Categories - Less Wrong

24 Post author: Eliezer_Yudkowsky 24 August 2008 07:51PM

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Comment author: timtyler 23 October 2011 12:41:02PM 2 points [-]

Once upon a time - I've seen this story in several versions and several places, sometimes cited as fact, but I've never tracked down an original source - once upon a time, I say, the US Army wanted to use neural networks to automatically detect camouflaged enemy tanks.

This document has a citation for the story: (Skapura, David M. and Peter S. Gordon, Building Neural Networks, Addison-Wesley, 1996.) I don't know for sure if that is the end of the trail or not.

Comment author: gwern 23 October 2011 02:33:11PM 2 points [-]

No page number, unfortunately. Not in library.nu; closest copy to me was in the New York Public Library. I then looked in Google Books http://books.google.com/books?id=RaRbNBqGR1oC

The 2 hits for 'tanks' neither seemed to be relevant; ditto for 'clear'. No hits for 'cloudy' or 'skies' or 'enemy'; there's one hit for 'sky', pg 206, where it talks about a plane recognition system that worked well until the plane moved close to the ground and then became confused because it had only learned to find 'the darkest section in the image'.

Comment author: timtyler 23 October 2011 10:42:55PM *  0 points [-]

The bottom of page 199 seems to be about "classifying military tanks in SAR imagery". It goes on to say it is only interested in "tank" / "non-tank" categories.

Comment author: pedanterrific 23 October 2011 11:10:29PM 2 points [-]

Discussed here, there's a few bits that might be useful.

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