Author: Vincent Diepeveen
Date: 13:28:28 05/27/02
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On May 27, 2002 at 14:02:47, Uri Blass wrote: but your proposal to play without book is a bit weird with booklearning. >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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