Author: David Rasmussen
Date: 09:53:18 12/02/01
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On December 02, 2001 at 12:45:35, Koundinya Veluri wrote: >On December 02, 2001 at 12:16:57, David Rasmussen wrote: > > >Hi David, > >A threshold of 5 games might be too big for the 2600u collection because it has >already been cleaned several times. 1 worked well for me, even 2 removed too >many variations from the book, but all depends on how the program chooses which >positions to store of course. But if the program has a good algorithm for >picking book moves, then a threshold of 1 should do. I created one from 2600 for >my program (although it doesn't have win percentage yet) with a threshold of 1 >game to 60 plies. It has about 1.2 M positions and rarely comes out of book with >an obviously lost position. Also, if you use a threshold of 1 game, you might >also want to reduce the ply count to 30 or 40. > >You can also try Enormous.pgn from the Crafty FTP site if you really want a >near-1GB pgn file, but there are many sizes of pgn collections there. For the >enormous, a threshold of anywhere from 2 games to 5 games works well for me. > >Crafty FTP: ftp://ftp.cis.uab.edu/pub/hyatt/ >Look in the common folder. > Thanks for the info! My problem with a low threshold was that below 6, 2600u contains 1. a3 . WHY?? I will try with enourmous.pgn and 2600u with a lower threshold, and just live with 1. a3, then... /David
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