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Subject: Re: MTD(f)

Author: Tord Romstad

Date: 03:26:47 01/15/04

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On January 14, 2004 at 20:11:53, Dann Corbit wrote:

>On January 14, 2004 at 16:49:29, Tord Romstad wrote:
>
>>Another simple trick is to reduce the resolution of your evaluation
>>function.  In my pre-MTD(f) days, I used pawn=128.  I still use pawn=128
>>as the internal unit in my evaluation function, but before returning
>>the final score I divide the score by 2.  This simple change made my
>>search noticably more efficient.
>
>Did you try other divisors besides 2?

No, not yet.  When I have cleaned up my source code a bit, I plan to make
it possible to choose the divisor in my init file.  I don't think bigger
divisors would result in stronger play, though.  It would make the engine
faster, but I am afraid a lower resolution would hurt the already poor
positional knowledge of Gothmog.

Tord




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