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Ed Schroder



Joined: 18 Aug 2011
Posts: 3885

PostPost subject: Re: Blog    Posted: Fri Nov 17, 2017 6:25 am Reply to topic Reply with quote

Daniel Shawul wrote:
How much are the rybka material tables worth ?

No idea, yet. I am currently testing the safe-option (min 10 games with a 0% or 100% score using the number of games as bonus c.q. penalty with a maximum of one pawn. So far a small positive result.

Overall I think the gain won't be that much, maybe 10-15 elo max for mine provided I find the optimal formula. But you never know if you don't try.

Daniel Shawul wrote:
If I add tuning to it, this method is equivalent to tuning a material configuration, instead of tuning individual pieces. Maybe it is safer to tune for the perturbation of the total material with the base calculated from 9-5-3-3-1 score or something similar. This is good to overcome the problem when a material configuration does not occur in the database.

Well of course the MIT is not meant to replace existing knowledge, it's an addition to fine tune the existing material configuration based on statistics. To overcome that missing patterns in the database may become a problem in certain positions use not too high bonus / penalties.

Using all the 5 million games gives a 50% fill which is close to having them all because the other half of the cells (or at least a great part) are about crazy positions with a queen and a handfull of pawns less which will never occur and if they do don't matter, no bonus / penalty needed.

Filling in the gaps with a 9-5-3-3-1 formula or something similar is tricky, I will keep it in mind for later.
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Display posts from previous:   
Subject Author Date/Time
Blog Ed Schroder Thu Nov 16, 2017 4:37 pm
      Re: Blog Steve Maughan Thu Nov 16, 2017 6:22 pm
      Re: Blog Gerd Isenberg Thu Nov 16, 2017 6:41 pm
            Re: Blog Ed Schroder Thu Nov 16, 2017 10:42 pm
      Re: Blog Nguyen Pham Thu Nov 16, 2017 9:17 pm
            Re: Blog Ed Schroder Thu Nov 16, 2017 11:08 pm
                  Re: Blog Nguyen Pham Fri Nov 17, 2017 1:06 am
      Re: Blog Daniel Shawul Fri Nov 17, 2017 3:55 am
            Re: Blog Ed Schroder Fri Nov 17, 2017 6:25 am
      Re: Blog Ed Schroder Sun Dec 17, 2017 4:57 pm
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