Author: Dann Corbit
Date: 21:51:07 07/24/01
Go up one level in this thread
On July 25, 2001 at 00:36:00, Dann Corbit wrote: >On July 24, 2001 at 23:06:58, John Hatcher wrote: > >>On July 24, 2001 at 20:57:16, Dann Corbit wrote: >> >>>Not for me, it was asked in this message: >>>http://www.icdchess.com/forums/1/message.shtml?180953 >>> >>>Since the header of that message is not descriptive of the actual problem, I >>>thought I would start a new thread so that the OP might find the answer. >>> >>>I'm pretty well ignornant when it comes to CB. >> >>In all seriousness, why would anyone want to build an opening book from 1.5 >>million games? > >That's a pipsqueak compared to some database files I know of. >I know of one collection with 7.1 million games between rated players. > >>Surely, 1.3 million of the games would be between Joe Blow and >>Norm Nobody. Who cares what they played in the opening? I would be very >>surprised if all the recorded games between International Masters and >>Grandmasters totaled more than 300,000 games. > >Prepare to be surprised. I have 380K in my tiny (highly filtered) set of 2.5 >million games. I throw out any games with the same move sequence. There are >lots of non-duplicate games that get clubbed from that. Actually, your 300K number is probably pretty good. Some of the games in the collection are from computer/computer matches and somehow got high ELO ratings attached. [snip]
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