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Subject: Re: Positions of known value?

Author: Frank Schneider

Date: 22:31:48 07/28/00

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On July 25, 2000 at 14:12:46, Tom Kerrigan wrote:

>It would be nice to make a change to your evaluation function and get immediate,
>accurate feedback.
>
>So my idea is to get a huge collection of positions of known value (i.e., "white
>has a stronger position") and then see how well the known values correlate to
>the evaluation function's scores.
Hi Tom,

I'm sorry I can't provide such data, but please tell me if you have a collection
like this :-)
One way to generate it: most commercial programs can replay and analyze
games and you can save the results including scores. You could even generate
data of various engines and compare them.

>
>Does anybody have any ideas for getting a high-quality collection of such
>positions? Or any comments on this approach in general?
In general: if you compare a searchresult with a static eval result,
the eval will be tuned to work well without search ;-)
I think the approach can help to find positions where your eval differs most
from the 'correct' score of good programs.

Frank


>
>-Tom



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