Author: James T. Walker
Date: 17:29:06 12/07/05
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On December 07, 2005 at 19:09:43, Uri Blass wrote: >On December 07, 2005 at 18:51:01, James T. Walker wrote: > >>This information only makes me suspicious of CEGT testing. I'm only running >>blitz test but this engine is truely strange. Against Shredder 9UCI it scored >>about 145 Elo higher. Against Fritz 8 it scored 50 Elo lower. I only have 266 >>games so far but Rybka's rating now is about 33 Elo below Fruit 2.2.1 and about >>3 Elo below Toga II 1.0. I'm playing Rybka without an opening book since it >>comes without one. I don't know which book/books are being used by different >>testers here but it does seem to indicate that almost any book is better than >>nothing. >>Jim >I am not surprised that you get different results when you test different >things. > >differences: > >1)CEGT do not test with original opening book >2)CEGT test with ponder off and you test with ponder on >3)CEGT test x minutes/40 moves when you test blitz games > >Uri Hello Uri, You are right of course. The above are the reasons I don't like CEGT ratings. At the same time I don't like testing Rybka without an opening book. When I get results like +145 Elo over Shredder UCI and - 50 Elo under Fritz 8 I know something is not right. Maybe Rybka was "tuned" against Shredder 9 UCI? I'm still running games without a book untill one becomes available though it seems like a big disadvantage for Rybka. Jim
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