Author: Dan Homan
Date: 14:19:23 11/20/00
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On November 20, 2000 at 17:04:37, David Dahlem wrote: ><snip> >> >>>also it seems if the program uses losses to tune it;s eval, then it can be >>>misinterpreted. >>>for instance, result from a game that was played in 5 min/game, will have lesser >>>values of importance then a game that was played at 40/40 or 40/60. >>> >>> >>>so it can be interpreted that an exchess version that plays only 5min blitz will >>>have one kind of tuned eval, while the other one that plays mainly 40/40 will >>>differant. Which one is best? :) >>> >> >>Yes, the learning results from 5 min blitz games might be quite different from >>40/40. One test I did was 200 games with crafty at 1 min bullet. EXchess lost >>a large percentage of the games in the first 100, but did much better in the >>second 100 (EXchess still clearly lost the match, but the results were >>significantly closer than the first 100 games). However, when I then matched >>this version of EXchess against GNUchess at longer time controls (5 min blitz, I >>think), my results were not better (and actually a bit worse) than before the 1 >>min bullet games against crafty. >> >> - Dan >> >Along the same line, I have a question. Will losing to a much stronger engine >such as Fritz6 or losing to a program weaker than Fritz6, cause EXchess to >learn much faster or supposedly get stronger quicker? > >Dave I am not sure. Try it an see. I seem to remember something from the knightcap group saying that learning was most efficient from games with similar strength opponents. - Dan
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