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Subject: Re: Engine testing: Who do you play?

Author: Robert Hyatt

Date: 07:28:04 08/31/04

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On August 31, 2004 at 08:22:20, Chris Welty wrote:

>On August 30, 2004 at 17:01:57, Robert Hyatt wrote:
><snip>
>>>Auto-tuning would be great.  My problem is I don't know how to do it.  If you
>>>have a method I'd love to hear more.
>>>
>>>Dan H.
>>
>>
>>It is also a _very_ hard problem.
>>
>>_very_ hard...
>
>It was quite easy to get Altamax to autotune its evaluation parameters so that
>it played substantially better than the hand-tuned version. It took less time
>than hand-tuning too.
>
>Getting autotuning to work WELL required some work, but was still easier than
>hand-tuning the coefficients.
>
>I use TD-leaf, which I got from some paper on the internet.
>
>Chris


How many different terms?  Crafty has a bunch.  auto-tuning them to be better
than the hand-tuned default has not happened yet although we have (mainly
Anthony) beat on it mercilously. Crafty has about 120 different eval features
that can be adjusted, with maybe 1/2 of them represented as large arrays of
values.  Easily over 1000 different values to adjust.  A tough task as I said...





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