Author: Frank Phillips
Date: 01:34:18 02/01/02
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On January 31, 2002 at 15:25:24, Jon Dart wrote: >On January 31, 2002 at 14:31:12, Dann Corbit wrote: > >>I don't remember GCP's book algorithm. I suspect that both programmers used the >>same source for their opening book. Many "automatically generated" opening >>books just consider that any move a GM has played must be good, and especially >>if it has been played twice. Some opening books do not even consider if the one >>who made the book won or lost the game! >> > >As I discussed earlier, I implemented a "selectivity" parameter for Arasan and >used it for the 2nd weekend of the tournament. I had it set to 70, so no moves >that had a score <70% of the highest-scored move would be played. I had already >excluded low-frequency moves (except those in the "basic" book, which is >hand-constructed). The selectivity did seem to help but Arasan did in one game >still get a bad opening (against Hiarcs, if I remember). > >At least it didn't play the King's Gambit as white (which it did in a previous >CCC againt Fritz), or the Benko Gambit as Black (which it did once against >Crafty). Fritz got it out of book early and killed it, and in the Crafty game it >never had any visible compensation for the pawn. > >--Jon [Event " "] [Site "204.178.125.65"] [Date "2002.01.27"] [Round " "] [White "ban"] [Black "Searcher5.9"] [Result "1-0"] [TimeControl "3600+10"] [WhiteELO "2701"] [BlackELO "2575"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 I think I need to do something similar. Why would anyone play f5 against Deep Junior - a better program on a faster machine :-( Frank
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