Author: Peter Kappler
Date: 15:01:39 01/27/00
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On January 27, 2000 at 13:52:38, Christophe Theron wrote: >On January 26, 2000 at 20:06:04, Peter Kappler wrote: > >>On January 26, 2000 at 18:23:50, Bruce Moreland wrote: >> >>>On January 26, 2000 at 18:10:10, Dann Corbit wrote: >>> >>>>IOW, more horsepower is a tough way to make chess programs play better. There >>>>is also evidence (according to some) that the increase in speed has >>>>*diminishing* returns. Hence, it may take a terahertz to get there. Don't know >>>>of any material that could do that, not even a Josephson Junction. >>> >>>I think it's a great way. You just take a vacation, preferably a long one, and >>>when you come back you make one call to Gateway and poof, free Elo points. >>> >>>Got an article that shows that the Elo curve flattens out with increased depth? >>> >>>bruce >> >> >>Ironically, Dann and I recently debated this very topic. If you use the 7-day >>filter, you can probably find the discussion under "DBx1000 = how strong?" or >>"tactical sufficiency threshold". >> >>It seems obvious to me that the curve must flatten out with increased depth, but >>I'd be fascinated to see evidence to the contrary. >> >>--Peter > > >I'd be fascinated to see evidence of what you say. > > > Christophe Hi Christophe, I must admit that seeing you and Bruce on the opposite side of the fence has me beginning to doubt myself. :-) I find this topic particuarly interesting, as I think it says a lot about the basic nature of chess. My intuition tells me that in most chess positions, a certain search depth is sufficient to "understand" that position, and avoid any serious problems. Searching beyond that depth would give diminishing returns. It seems like a simple experiment to conduct. Just play lots of self-play games between an n-ply and n+1 ply search, and after 500 games, increase n. Keep increasing 'n' Surely these experiments have been conducted. If you can point me to any relevant articles, I'd be grateful. I have read the "Crafty goes deep" article in ICCA, but the results didn't seem conclusive to me. --Peter
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