Author: Robert Hyatt
Date: 07:44:24 12/31/98
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On December 31, 1998 at 09:47:12, James T. Walker wrote: >On December 31, 1998 at 08:55:03, Harald Faber wrote: > >>On December 31, 1998 at 07:38:05, Inmann Werner wrote: >> >> >>>Can anybody tell me how book learning works? >>>The principle should be, mark good moves as good and bad moves as bad. >>>But how can a program determine, what was a good or bad move? >>>Werner >> >>Reduce the playing preference when you lose and raise when you win. >>Other step of learning is a change in eval, e.g. from +2.20 to -1.50 then there >>went s.th. wrong... >>>>>>>>>>>>>>>>>>>>>>>> >Hello, >This "Book Learning" thing seems over simple to me. I wish a programmer would >get on here and explain the real fine points to me also. I'm bothered by the >fine points of the whole thing. For instance, when I play Junior vs Nimzo, >Junior's book settings change in an attempt to only use winning lines (I >assume). This sounds good but what happens when I now take Junior and play >against Fritz ? Just because certain lines did not work good against Nimzo does >not mean they are not good against Fritz does it ? After 84 games against >Nimzo, Junior was left playing only C4. The first 10 games it played against >Fritz 5.32 it got beat up. Last nite I "Cleared" the book settings for Junior >and started an auto232 match with Fritz 5.32 at Game/60. This morning the score >for Junior was 3 wins and 3 draws - no loses! So it seems to me for book >learning to work, you need to play a lot of games against one opponent. Then if >you change opponents, you need to reset the values to zero and start again. Is >this the way it should work ?? >Jim Walker I have written up Crafty's "book learning" algorithm for the JICCA. It is scheduled for publication in the next (March I think) issue. Once it is published there, I'll see about putting a copy on the CCC resource board as well...
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