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Subject: Re: Aspiration Window sizes

Author: Renze Steenhuisen

Date: 07:07:55 03/14/05

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On March 14, 2005 at 10:05:24, Robert Hyatt wrote:

>On March 14, 2005 at 09:32:55, Renze Steenhuisen wrote:
>
>>Hi all,
>>
>>can anyone tell me whether there has ever been a study on the actual needed
>>aspiration window sizes? The only thing I am only reading is that "it is common
>>knowledge" and "it is known" concerning Aspiration Windows. And Crafty is using
>>0.40*PAWN_VALUE because it seemed to perform best. But is there actual data
>>somewhere?
>>
>>Cheers!
>>
>>Renze
>
>
>That is "actual data".  Take your program, and try different values, over a
>large test set of positions.  Find the range that produces the greatest average
>search depth for the test set.  It will vary for each program, since the
>evaluation functions can produce wildly variable scores...

So, there is nothing being published whatsoever? No actual data anywhere? I can
imagine that the test results are different when other time constrains are
given. Actually, I know for sure... but that wasn't the question.




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