Author: David Eppstein
Date: 20:02:49 11/09/97
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On November 09, 1997 at 17:04:11, Robert Hyatt wrote: > Crafty has *always* done this. Right before the "depth time ... " heading, > you see a "target time: " line. This is the anticipated search time for > this move, assuming the bottom doesn't fall out right at the end. [snip] > for normal moves, the "target" is within 1 second of how long it will take... You must cut the search in the middle of a ply, if you can predict so precisely how long it will take. Does this distort the search results much? Do you get much useful information from the time you spend after the last full ply? I've been playing with a timing strategy that involves two time bounds T1 and T2. If a ply finishes after time T1, I stop instead of going on to the next ply. If I get to time T2 without having stopped, I abort the search. This way the search result is usually a search of a complete ply rather than all of one ply and part of the next. But this is just for a program I wrote as a web applet, I haven't tried this in a real timed game, so I'm not sure whether it's a good idea. Also this way my program naturally allocates more time to some moves than others, which most people seem to think would be a good idea if you knew how; I'm not sure if the moves it's allocating more time to are the ones that need the extra time, though. -- David Eppstein UC Irvine Dept. of Information & Computer Science eppstein@ics.uci.edu http://www.ics.uci.edu/~eppstein/
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