Author: Thomas Logan
Date: 14:19:17 08/27/05
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On August 27, 2005 at 14:40:14, Norm Pollock wrote: >On August 27, 2005 at 13:19:30, Thomas Logan wrote: > >>Under edit opening book in chessbase gui is an option to learn from database >> >>Can someone give me some information on this ? >> >>Does it permently rewrite the opening book ? >> >>Any experience with this ? >> >>Tom > >I fooled around with this awhile ago. I'm not sure how it works. This is just a >wild guess. > >An opening book consists of a tree of positions together with statistics about >frequency of occurrence and wins/draws/losses. When you import a pgn file for >example, you get the positions AND the stats for each position put into your >book. > >But suppose you only want the stats without any additional positions put in. >Then you would use the "learn" feature. Example of use. > >Suppose you import a pgn file to make a book. And suppose you have a second pgn >file that includes additional positions that you do NOT want to put into book, >yet you want the stats in the 2nd pgn file that relate to the positions that >occurred in the 1st pgn file. So you "learn" from the 2nd pgn file. > >Example: You have a pgn file based on games of players 2600+ played during >2004-5. And suppose you want to add stats to those positions based on the play >of Fischer. So you could "learn" from a pgn of Fischer games, you but have to >separate into a white pgn and a black pgn first and "learn" from each so that >you only get the stats from Fischer's moves. Hi Norm Thanks for the explaination Tom
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