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Dennis Sceviour

Joined: 20 Jul 2015
Posts: 330

Post subject: Re: Logarithmic Patterns In Evaluations    Posted: Sat Dec 09, 2017 11:15 pm

 jdart wrote: No, I am not saying hand tune mobility. I am saying, Knight with one square to move to gets one weight, and Knight with two squares to move to gets another weight. Both weights can be auto-tuned. They are independent.

I do not agree they are independent. They follow an average logarithmic pattern of increase.
 Quote: The reason you normalize is that the purpose of regularization is to penalize extreme values. So you want large values of the parameters (+ or -) to give larger penalties.

This can be approached from a different point of view. The following type of position is won for white in almost all queen positions:
[d]8/8/8/6k1/3Q2p1/8/5K2/8 w - - 0 1
Queen mobility numbers are irrelevant and a tuning number would give an infinite value. Thus, instead a test:
if whiteMaterial < 300 then ...
will bypass any mobility test on the static evaluation. Some static evaluators also call this a lazy evaluation cutoff.
 Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First
Subject Author Date/Time
Dennis Sceviour Sat Dec 09, 2017 6:05 pm
Jon Dart Sat Dec 09, 2017 6:59 pm
Dennis Sceviour Sat Dec 09, 2017 7:21 pm
Jon Dart Sat Dec 09, 2017 7:46 pm
Dennis Sceviour Sat Dec 09, 2017 8:54 pm
Jon Dart Sat Dec 09, 2017 10:51 pm
Re: Logarithmic Patterns In Evaluations Dennis Sceviour Sat Dec 09, 2017 11:15 pm
Dennis Sceviour Sun Dec 10, 2017 2:29 pm
Jon Dart Sun Dec 10, 2017 8:34 pm

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