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Subject: Re: Crafty 15.14 - 150k NPS?

Author: Dave Gomboc

Date: 08:54:35 11/11/98

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On November 10, 1998 at 22:20:02, Robert Hyatt wrote:

>On November 10, 1998 at 18:12:50, jonathan Baxter wrote:
>
>>On November 10, 1998 at 08:07:52, Robert Hyatt wrote:
>>
>>>
>>>You are comparing apples and oranges...  Crafty does a full endpoint evaluation
>>>in the tree.  The "fast" programs do mainly incremental evaluations plus
>>>piece/square tables set at the root, and then minimax evaluation done at the
>>>tips of the tree.
>>
>>
>>What do you mean by "minimax evaluation done at the tips of the tree."
>>
>>Jon
>
>
>Sorry, meant "minimal evaluation"...  IE the incremental stuff updated by make/
>unmake, plus the piece square stuff set at the root, plus a few things at the
>endpoints...  good for speed...  but accuracy can be a problem...

Judging from the SSDF list, speed is working.  Not what some people want to
hear, is it? :)  With regard to possible accuracy problems, it's quite possible
they've put in some effort to minimize them.  Everyone has accuracy problems
anyway, it's just a matter of degree.

Dave Gomboc



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