Author: Robert Hyatt
Date: 15:02:00 08/22/02
Go up one level in this thread
On August 21, 2002 at 21:07:30, Uri Blass wrote: >On August 21, 2002 at 20:10:26, Mike S. wrote: > >>On August 21, 2002 at 11:07:58, Robert Hyatt wrote: >> >>>(...) >>>1. They reported depth as 11(6) for example. According to the deep blue >>>team, and regardless of what others will say about it, this supposedly means >>>that they did 11 plies in software, plus another 6 in hardware. >> >>When I looked at some of the logs, I had the impression that "11(6)" was >>reported most often, IOW. we can probably say that it was the *typical* search >>depth reported (except additional extension depths we do not know), in the >>middlegame, 1997. Would you agree with that from your study of the logs? >> >>Another thing I'm not sure of is: *When* could relatively safely be claimed, >>that DB.'s depth is reached again: >> >>a) when a current prog reaches at least 16 plies as a typical middlegame depth, >> because some search techniques used now (which DB. didn't use), make up for >> the missing ply (at least), or >>b) when 17 plies are reached, not earlier, or >>c) a program would have to reach more than 17 plies, because DB used much more >> knowledge which current software probably does not yet use to that extent. > >You assume here that the search depth of deeper blue was 17 plies >If you read this thread you can see that the average >search depth of deep blue was 12.2 plies. > >I agree that 12.2 plies are not enough to reach deep blue depth >because deeper blue did more extensions but programs of today >search clearly deeper than 12.2 plies. > >My opinion is that Deep Fritz or Deep Junior on A1500 are >not weaker than Deeper blue and if you give them more >than one processor they are even better than deeper blue of 1997. > >Uri We will begin to get an answer to this before long... Kramnik and Kasparov lie in wait.
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