Author: Omid David Tabibi
Date: 08:33:52 11/17/03
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On November 17, 2003 at 11:27:15, David H. McClain wrote: >On November 17, 2003 at 11:19:35, Omid David Tabibi wrote: > >>I'm trying to create a BKT book (Shredder Classic book format) for Falcon from a >>large database of games. The database has about 500,000 games (I converted it >>from PGN to CBF to save disk space). >> >>I created an empty opening book and imported the database to create the book. >>After one hour (on 733MHz system) the book has gradually grown to 11 MB but >>looking at Shredder interface does not give any indication as to how long the >>operation might take. >> >>Does anyone here have an idea how many hours it will take to finish creating the >>book? > >Omid, > >Depends on your hardware. 733 MHz, very slow! >I do this all the time but simply import the games >directly into a new Classic opening book (.bkt) format. It also depends on what >length in plies you have chosen to import. I left all the default options. Depth 14 plies relative, import statistics, and don't import lines andmove attributes (don't know what the latter two exactly mean in this context). Shall I modify any of these settings? >I would say a couple hours depending >on my questions. > >Some advice, get rid of all games that are draws and by weak players. This >should cut the size considerably. First I tried pruning all the games below 2600 Elo. Only about 10000 games were left! Maybe I have to cut it at 2400 or 2500... A few months ago I created a smaller book in Fritz interface (ctg format). But as in Graz I will run under the Shredder interface I have to recreate the book in bkt format. Another option is creating the book in fbk format (fritz old book format). This has the benefit of being compatible with both Shredder and Fritz interfaces. The problem is that I don't know of any tool that can create an fbk book out of a database... > >DHM
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