Author: Omid David Tabibi
Date: 11:19:09 01/12/03
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On January 11, 2003 at 23:36:05, Robert Hyatt wrote: >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? > Based on the 6 games, I did not see any deep positional knowledge on Deep Blue's behalf, but 6 games alone might not be a sufficient indicative. Assuming that Deep Blue's evaluation was more or less in Deep Junior's level, it would be hard to guess the effect of forward pruning (and no, I will not bet!). >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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