Author: Pham Minh Tri
Date: 05:55:15 05/24/01
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On May 24, 2001 at 08:14:37, Gian-Carlo Pascutto wrote: >On May 24, 2001 at 07:50:32, Pham Minh Tri wrote: > >>Hi, >>I heard that the hash technique could apply to opening book. Could someone >>explain to me how to use and what is the benefit? >>Thank very much in advance, >>Pham > >Quite simple. Instead of storing positions or sequences you store >the hashes of the positions. > >The benefit is space. If you were storing sequences you will also >spot transpotions now. > Could you explain more detail? I still do not understand. The 64 bit hash key is always bigger than 16 bit of a move representation, and the random numbers may make the hash key after moving totally different from the old one, so how to save space? And another question: does this technique need more computing (to match and extract) than the normal technique (use other kind of database)? Thanks, >-- >GCP
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