Author: Uri Blass
Date: 11:33:03 12/08/05
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On December 08, 2005 at 14:14:46, Dann Corbit wrote: >On December 08, 2005 at 04:03:26, Heinz van Kempen wrote: > >>On December 08, 2005 at 03:50:37, Jouni Uski wrote: >> >>>3 Fruit 2.2 2768 16 16 1385 67.8 % 2638 27.8 % >>>4 Fruit 2.2.1 2764 15 15 1414 59.1 % 2700 34.5 % >>> >>>EGTBs weaken engines play? >>> >>>Jouni >> >>Hi Jouni, >> >>this is frm the Blitz rating list. In the 40/40 list the have the same rating >>according to BayesELO. >> >>There is another example: compare Loop List 600 EGTB and Loop List 600 noEGTB. >>Of course more games needed here. > >Only 16 Elo difference (within experimental uncertainty). I think it is safe to >say that EGTB files (in general) do not increase strength of play. The cost of >a probe seems to be about equal to the value of the knowledge gained. I do not believe in it. The cost of a probe is expensive if you probe every node but you do not have to probe every node and you can probe only when the remaining depth is high enough. Maybe probing when the remaining depth is high enough cause hash problems and this may be a reason for not increasing strength but I do not believe that the problem is generally speed. knowledge in general can be productive and the only question is how much. If the advantage is very small then it is very hard to prove it by results of games but it does not mean that there is no advantage. Uri
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