Author: Gian-Carlo Pascutto
Date: 04:23:49 08/16/03
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On August 15, 2003 at 22:56:34, Robert Hyatt wrote: >On August 14, 2003 at 15:27:06, Peter Fendrich wrote: > >>1FH = The ratio where the first generated move in the node is a Fail High. >> >>I experimented with removing the the hash table and became a bit surprised. >>Normally I have about 1FH = 95-96%. When I removed the hash table that figure >>raised to more like 1FH = 96-97% while the search depth, as expected, was >>decreased. >> >>Increased 1FH when removing the hash table. Is this normal? > >Probably. You increased the size of the tree. And for the extra stuff you >searched, you searched it pretty accurately. But you _did_ search it, which >slowed you down. :) No! - That does not make any sense at all. "the extra stuff you searched, you searched it pretty accurately" If we disabled hashing and hence handicap move ordering, we'll do worse, not better, on average. Yes, we may generate extra nodes and do well there, but that's certainly not what we should expected in the average case, since we just made our move ordering worse! Do you see your contradiction? -- GCP
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