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Subject: Re: Hello from Edmonton (and on Temporal Differences)

Author: Sune Fischer

Date: 02:16:55 08/01/02

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On July 31, 2002 at 18:10:08, Vincent Diepeveen wrote:

>And he'll never do a competative chessprogram again either, he forgot to
>add that too.

It's the classic problem. Person A has spent 15 years on his chessprogram, he
thinks he knows it all. In from the right comes a guy who knows nothing about
chess programming but is very good a tuning weights in general. He applies his
knowledge to a simple chess program and is very successful in increasing it's
strength.
Person A now concludes; "his method isn't working, his program is still weaker
than mine":)

>I remember Knightcap very well. TD learning had the habit to slowly
>make it more aggressive until it was giving away a piece for 1 pawn and
>a check.
>
>Then of course the 'brain was cleared' and experiment restarted.
>So in short the longer the program used the TD learning the worse it
>would play, from my viewpoint.
>
>Definitely from a chessplayers viewpoint it did. Of course we must not
>forget that in the time it played online, that nearly no program was
>very aggressive. So doing a few patzer moves was a good way to get from
>perhaps scoring 11% to 12% or so.

So in other words, if you teach it the wrong things it doesn't work?
Why am I not surprised.

-S.



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