Author: Vasik Rajlich
Date: 03:07:47 01/12/06
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On January 11, 2006 at 23:22:09, Albert Silver wrote: >Since I am not fond of random openings to test something as specific as which >settings are best, I ran two full matches using the Noomen Select positions >against Fruit 2.2 to test the Neutral and Optimistic settings of Rybka Beta 9. > >For those who aren't familiar with them, the Noomen Select positions are a set >similar to those of the Nunn2 set, except there are 40 (leading to 80-game >matches) and they were chosen by well-known opening book designer Joeroen >Noomen. > >The results were interesting, and showed a marked improved performance for the >Optimistic settings. > >Match conditions were: > >Athlon64 3500+ (Venice) + 1GB Ram >Time control: 10mins + 2sec increment >Ponder off; 256MB hashtables each >Noomen Select positions > >Noomen-RybkaB9Neutral-Fruit22 2006 > >1 Rybka 1.01 Beta 9 32-bit 2900 +6 +34/-21/=25 58.13% 46.5/80 >2 Fruit 2.2 2850 -6 +21/-34/=25 41.88% 33.5/80 > >The GUI said Rybka performed 56 Elo over Fruit 2.2 using the Neutral settings. > >Noomen-RybkaB9Optimistic-Fruit22 2006 > >1 Rybka 1.01 Beta 9 32-bit 2900 +52 +36/-13/=31 64.38% 51.5/80 >2 Fruit 2.2 2850 -52 +13/-36/=31 35.63% 28.5/80 > >Here the GUI said Rybka performed 102 Elo over Fruit 2.2 using the Optimistic >settings. > >In order to gather more data I'll run a shorter Nunn2 match (only 40 games) >against Gambit Fruit 4bx, which had been the first Beta's toughest opponent in >the Nunn2 set aside from Fruit 2.2 in my testing. > >The rating of 2850 for Fruit was taken from the latest SSDF list, and Rybka's >2900 was chosen arbitrarily. > > Albert Albert, thanks for the data. As I told you in the email, it may be that the neutral setting is good in self-play while the optimistic setting is better for getting bigger scores. Vas ps. Iweta is now watching over my shoulder and gives her greetings - and says that after Budapest, Rio is the best :)
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