Author: Norm Pollock
Date: 11:40:14 08/27/05
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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.
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