Author: Christian Söderström
Date: 15:52:46 01/02/01
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On January 02, 2001 at 17:53:41, Peter Fendrich wrote: >On January 02, 2001 at 16:10:53, Christian Söderström wrote: > >>On January 02, 2001 at 15:36:45, Jon Dart wrote: >> >>>On January 02, 2001 at 05:30:07, Christian Söderström wrote: <---> >>So isn't it possible to supplement your idea by also >>learning from the end-result of a game? >> >>- Christian >> >>>--Jon > >That's what I am doing. >Very shortly: >I have a book file and a "post" book file. The first one is build from >pgn-files. The latter one is build by Terra itself when saving the 10 or so >first moves after leaving the book. The game result is affecting the values for >all the moves used from the book and Postbook. >I combine this with a more complex logic for Postbook that backs up part of the >evaluation a couple of plies upwards in the played line. The back up value is >decreased for each upward step. Sounds interesting! But how do you treat moves in the postbook? Can they be trusted as much as moves in the regular book? >The last complex part is not as useful as it's beautiful! >It's far to sofisticated. I have to clear the learning completely from time to >time anyway. New releases plays different. True true. >Two parameters to consider is the rating of your opponent and the time settings >(at least when backing up evaluation). >For example when Kasparov outplays Mint (if he's lucky of course...) Well it's theoretically possible I guess. >10 games in >a row Mint might consider 1.e4 and 1.d4 as seriously bad moves and never try >them again. It's time to clear the learning again ... :-) Yeah you're right :) I have a really sophisticated learning system worked out, based on an x^2 function that will hopefully work well (read: at all). I can send a parameter to the function that tells it how much weight to put into this game, based on probably time control and opp-rating like you say but probably also how many games has been played with this opening prior to this. Also, it must be recognized if the opponent attained a winning advantage but goofed up, that should be treated as a loss. - Christian > >//Peter
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