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Subject: Re: Creating Opening books ==> don't use CAP data.

Author: Tony Werten

Date: 02:20:07 07/11/00

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On July 11, 2000 at 04:23:25, Dann Corbit wrote:

>On July 07, 2000 at 06:26:46, Adrien Regimbald wrote:
>

>I think a hybrid approach is best. A hand tuned book by top experts is going to
>be better than an automatic book.  However, it will cost millions of dollars to
>hand evaluate many millions of positions.  In short, it's not gonna happen any
>time soon.  So you are left with a small (perhaps nonexistant -- depending upon
>the size of your wallet) book that is written by hand, and a much larger
>automatic book. I think that even the hand-tuned book might possibly benefit by
>using the right mathematical approach.

I agree with that hybrid. If you add a flag to every position indicating if it's
automatic- of hand generated, and mini-max it to two scores, one for only
handevaluated positions and for one all positions, you have best of both if you
let your engine prefer the first.

Then, whenever you see your engine ending in a position it doesn't understand
you just hand-adjust the score for that position, set the flag, minimax, and
both your scores will benefit from it.

Some goes if you want to add some different variations. Point is that at least
you have something until you have done that.

Tony



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