Author: José de Jesús García Ruvalcaba
Date: 13:54:08 03/16/00
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On March 16, 2000 at 15:59:24, G. R. Morton wrote: >On March 16, 2000 at 14:59:48, Dann Corbit wrote: > >>On March 16, 2000 at 13:49:28, G. R. Morton wrote: >> >>>If really true, can someone try to explain how can this can be with its highest >>>rating against computers? Enrique Irazoqui at >>>http://www.computerschach.de/tourn/cad00.htm calinmed that Junior6 showed >>>superior positional understanding in actual play. Can someone enlighten? >> >>Test suites are just one measure of a program's ability to play. >> >>Little Goliath is a killer in test suites, but does not play as well as the very >>best chess engines (but it's no slouch either). Rebel can be tuned to play >>strongly or to solve chess test suites strongly, and the settings are very >>different. > >You are suggesting that a program can be very good at both tactical & positional >test suites but mediocre at play (& vice-versa) but not saying how this can be. Playing chess and solving testsuites are different tasks, and different approaches give best results for each of them. >But if this is true it is very puzzling since every move of a computer game can >be thought of the software s solution to a tactical or positional test. Not quite. Most positions seen in a game do not have a key move that solves it. >There >should be a very strong correlation one would think. There is no correlation between playing strenght and performance at testsuites. >As a comparison, people >who score very high on I.Q. and SAT tests are nor just good on such tests >which is, of course, why these tests are given. Their strong correlation with >high performance or success in many other activities are well noted (see The >Bell Curve book for instance). I think this comparison is not valid. Human beings are very different from chess engines. >Did not Larry Kauffman once claim that his test >suites could be used to fairly accurately the software s rating? Anyway the >interesting question of how remins. There are some known trick to improve performance at testsuites which do not increase playing strenght. Reducing the pawn value is one of them, I think. José.
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