Author: Don Dailey
Date: 17:15:12 09/09/98
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On September 09, 1998 at 11:34:10, Moritz Berger wrote: >On September 08, 1998 at 19:16:58, Robert Henry Durrett wrote: >>I get the impression that >>playing Genius with the Fritz book would not completely null out the Fritz >>advantage because, I assume, the Fritz book is "engineered" for Fritz. I >>presume that this means that the Fritz book lines are selected to optimize Fritz >>performance by covering up specific weaknesses of Fritz and capitalizing on >>specific strengths of Fritz. > >The Fritz PowerBook is compiled from a GM database with the only criterion for >including a game in the book being the playing strength of both players. > >The PowerBook doesn't contain *any* preferences to make Fritz prefer or avoid >any kind of opening lines, except of course the statistics from the human >database (win/loss/draw ratio and move frequency as well as ELO performance >which Fritz doesn't use AFAIK). It's basically just a good database, nothing >more and doesn't include any previous Fritz games. > >Moritz Moritz, I was under the impression that they used a learning process of some kind. I got this directly from Franz although he provided little detail. He was disapointed after getting a bad result at some tournament and thought perhaps the idea was no good. I also got the impression he was not directly involved in the programming of the book learning method but I don't know this for sure. But soon after Franz telling me about this I notice Fritz shoot to the top of the rating list. In my mind I suspected this was related to the book work I knew they had done but it was only a guess and I have no way to know. It could be a completely unrelated event for all I know. So I am curious about where you got this information. Is this common knowledge, part of the chessbase documentation or did you learn this from some other source? I am pretty interested in knowing this myself and you seem to be in the know here. From what you are saying I am starting to believe they have a completely separate in-house book they use and Fritz got it's impressive results without any special book work or tuning of any kind. - Don
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