Author: Robert Hyatt
Date: 20:36:05 01/11/03
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On January 11, 2003 at 19:23:20, Omid David Tabibi wrote: >On January 11, 2003 at 08:23:43, Frank Phillips wrote: > >>"The next question is, and many people are asking it, do we know how Deep Junior >>compares in strength with Deep Blue? The really interesting thing, from the AI >>point of view in general and for computer chess researchers in particular, is >>that Deep Junior examines something like one percent of the number of positions >>per second of Deep Blue. But despite this Deep Junior may well play better chess >>because its "understanding" of the game is better. It appears to have more chess >>knowledge and understanding in its evaluation function than Deep Blue did, and >>this compensates for the difference in positions-per-second.." Extract from >>Levy on Chessbase.com site >> >> >>From what I read in Behind Deep Blue I find this surprising. But then again, I >>no nothing about Junior other than it is an awesome program. >> >>If only Hsu had produced his chip so we could have answered this question rather >>than use it to fires. >> > >If say Deep Blue was 100x faster than Deep Junior, then I suggest that you >conduct the following test: > >Take an engine which has a very simple evaluation function, and its speed (NPS) >is about Junior's speed, turn off all its selectivity (e.g. null-move pruning, >futility pruning, etc), and let it play against Deep Junior. The time control >should be 100x in favor of the brute force engine, e.g. 500 min/game for the >brute force one, and 5 min/game for Deep Junior. > >I will gladly bet on a convincing win for Deep Junior. How about this: Deep Junior on current hardware, set up as normal. Deep Junior on hardware 200X faster, with no selective forward pruning. But with _everything_ else the same. Care to bet now? You are assuming facts not in evidence. Namely that DB2 had an inferior eval. Nothing I have seen suggests that. Not Kasparov's comments. Not anybody's comments. (Except for Vincent of course). > > >>Good luck to Junior and team in the coming match. >> >>Frank
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