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Subject: Re: Positions of known value?

Author: Dann Corbit

Date: 15:23:55 07/25/00

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On July 25, 2000 at 18:18:32, Tom Kerrigan wrote:

>On July 25, 2000 at 17:38:21, Dann Corbit wrote:
>
>>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.
>>>
>>>Does anybody have any ideas for getting a high-quality collection of such
>>>positions? Or any comments on this approach in general?
>>
>>On my ftp site, project Apocalypse for CAP has an analysis of about 7000 EPD
>>positions.  You could take any subset from that set as a basis.  There are about
>>5000 or so which are definitely verified, so I suspect you could use them.
>>However, there are also some where the bm does not agree with the pm or the am
>>is the pm.
>
>Isn't the CAP data calculated via computer? So already there's some "noise" from
>an evaluation function.

Indeed it is.  Consider also the approach I suggested in a follow-up to KD.

I think that it is going to require a heuristic approach, since reasonably, we
don't really know the answers to any of the positions.  All of them are educated
guesses.



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