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Subject: Re: opening book question

Author: Scott Gasch

Date: 15:45:54 06/12/01

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>
>What kind of collision resolution method do you use for your hash table?

It occurs to me you may mean the hash table used when creating the opening book
and not the transposition table of the engine, as I assumed.

I use linear probing... basically if there's a collision check the next entry
and so on until one that matches is found.  As I said I then strain out
unpopular positions from the book when the hash starts getting full.  I can
construct a new book from a 650,000 game PGN file in about 8 minutes on my
machine.  (Granted it has 596Mb of memory).

Scott



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