Author: Mogens Larsen
Date: 10:18:18 06/24/01
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On June 24, 2001 at 10:01:59, Robert Hyatt wrote: >Let's go back to DB vs Kasparov match 2, game 6. Kasparov claims "he mixed up >the move order". Does that suggest comprehending the opening or does it suggest >simply memorizing a particular set of moves in a particular order? It suggests that Kasparov was under a great deal of psychological strain. Not particularly surprising given the circumstances. Especially if it's an opening he doesn't play that often. Perfect recollection would support your claim. Either way, it's a hopeless question. You can argue both cases with the same data. >Suppose a computer took its opening book, played thru each one, did a real >search at every position, then minimaxed the entire thing so that its >evaluations were used to choose from the book lines? Early Crafty versions >did this. Cray Blitz did it too. IE they didn't just blindly follow the >book moves, they actively participated. If the engine did an active search, but limited in time, and selected an available move, it would be better. That is if the book isn't commented or purposely narrow. The chance to error would be there and therefore the results would be more credible IMO. So there are several options: 1) No holds barred. Everything storable can be used. 2) Everything with a storage restriction. 3) The Crafty solution with and without various restrictions (TB and storage). 4) Only engine generated data with or without storage restriction. 5) Only engine. I probably missed one or two possibilities. The last option appeals most to me. >Or in the current case of crafty, with book random 0, it does a search over the >set of known book moves and plays the one _it_ thinks is best, not the one that >is most popular or whatever. Yes, I know about that option. You used it in London IIRC. Haven't tested it a lot myself, but it could be interesting to make a test with various configurations. Mogens.
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