Author: Serge Desmarais
Date: 23:00:45 08/27/98
Go up one level in this thread
On August 28, 1998 at 00:48:25, blass uri wrote: > >On August 27, 1998 at 19:22:53, Serge Desmarais wrote: > >> >>>I have fritz5.00 and my machine never lost moves >>>maybe it is only a problem of fritz5.03 >>> >>>Uri >> >> The only problem is that I TOO use Fritz 5.00! Now a few questions for you. >> >>1-Did you copy the book on your hard disk? (silly question, I know!) > >yes > >> >>2-Did you import new games in the tree (if yes, approximately how much?) > >no > >> >>3-Did it write down new learning in the tree often? Or did you just install it >>and use it to analyze/understand games without playing much? > >I use it to analyze/understand games without playing much >> >>4-Are you using Win95 (I am still using Windows 3.11/DOS 6.22) > >I use Win95 > >Uri So, apart from installing it on your drive, about nothing was further added (written) to the tree. Every evening, and often several times during the same evening, something was added to the tree (learned information added to all the book moves played in the game and/or new games added). It seems that the more you write things to the tree, the more chance you have to lose information... If you let it as it is on the CD, than nothing bad happens to it. So, the ideal condition would be to not let it "learn" anything. And it is not a "true" learning as is the one of Crafty (whose learning takes the evaluation's changes that occur later in the game and transfer that knowledge to the last book move --as I understand it) but is influenced only by the result obtained in the games played. So if it plays against a French Defense and lose, the learn evaluation will affect all book moves played (the last moves the most) and even 1.e4 which will be reduced to 0% chance of be played! It will then start playing almost only 1.d4. Until it loses or draws. Then, 1.d4 will too have a 0%. When it will have a draw/lost with all "playable" first move, it will reajust the probability of them all to be about even. Same thing for the rest of the tree... If the first game with 1.e4 is a win, it will then EXCLUSIVELY play it, until a draw or lost occurs. So, as long as it wins and as long as the opponent always plays the same moves, Fritz will always play the same too (thus only playing ONE line). Serge Desmarais
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.