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Subject: Re: Learn from database option

Author: Thomas Logan

Date: 11:48:25 08/28/05

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On August 28, 2005 at 07:31:44, Henrik Dinesen wrote:

>On August 27, 2005 at 17:19:17, Thomas Logan wrote:
>
>>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
>
>
>That was what Alex Schmidt with the Fruit book, made the book learn from Fruit
>games.
>
>Henrik

ok thanks for the information

Tom



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