Author: Uri Blass
Date: 11:02:47 05/27/02
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On May 27, 2002 at 10:50:46, Vincent Diepeveen wrote: >On May 27, 2002 at 09:21:29, Uri Blass wrote: > >Please make a difference between position learning and >booklearning. A program that's doing booklearning might >be brilliant, but it will keep on losing the same game In a match of 40 games there is no chance to lose the same game twice if you do simple learning that is only to change the first move after a loss If every first move is a book move then book learning is enough. The book may have some priorities so 1.e4 f6 is going to be played only if in the last 19 games with black you lost with all the alternatives. You can lose eqvivalent game(1.e4 e6 2.d4 and 1.d4 e6 2.e4) and in order to avoid this, a positional learning is needed. This means that if you get the same position that you lost twice you have to play a different move and the simplest way that I can think is that the program that lost with 1.e4 e6 2.d4 d5 may assume that 2...d5 is illegal after 1.d4 e6 2.e4. The program may safely forget everything that is not in the last 20 games with the same color because the opponent should be a different opponent after 40 games(it is also possible to do it after 21 games or 22 games with the same color to prevent problems and the only problem is in case that the program lost with all the alternatives with the same color in the first 20 games but it is not going to happen with one of the top programs. My point is that I guess that the top programs may get rating that is not more than 100 elo weaker than the rating that they got in the ssdf and in some cases they may beat again and again programs that has no position learning by moves like 1.h3 when the version with the fritz book is not going to do it because it is not going to get the opponent out of book in the first moves. Uri
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