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Subject: Re: neural computing in eval function

Author: Vincent Diepeveen

Date: 05:02:42 12/21/99

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On December 20, 1999 at 15:29:06, James Swafford wrote:

>Hi Tijs,
>
>I think we're in the same boat.  I am setting up a genetic
>algorithm experiment, hopefully to begin late next summer.

For some reason i see a clear difference between 'genetic'
and 'neural learned' parameters.

The big problem is to find a good and objective test for
a newly created parameterset.

If the genetic algorithm just flips a single bit somewhere
in the paramater set, then it's *very* hard to determine whether
it's a good bitflip or a wrong one.



>I've resigned myself to the fact that there won't be any
>quick results.  In fact, I'm expecting this to take at least
>a couple years to derive anything meaningful.

>TDChess (KnightCap) used neural networks.  You can find
>a link to KnightCap on my site...
>
>http://members.xoom.com/jswaff/chessprg
>
>Good luck.. please keep up posted!
>
>--
>James
>
>
>On December 20, 1999 at 15:00:50, Tijs van Dam wrote:
>
>>Hello,
>>
>>For my simple chess program GKJunior I now stand for the tremendous task of
>>writing a decent evaluation function. I took a look at the 3000 lines of
>>crafty's eval and decided that i just don't know that much of chess itself to
>>ever do this.
>>
>>Therefore, I decided i would like to have the program do some stuff by itself.
>>Sounds easy, but isn't. I'm looking in the direction of neural programming... I
>>want the program to calculate a value for positional advantage, knowing nothing
>>at all of passed pawns, trapped bishops, connected rooks or whatsoever.
>>
>>Has anybody here some experience on this topic and could you point me in some
>>direction (books, internet resources)?
>>
>>Greetings,
>>Tijs van Dam



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