Author: Sune Fischer
Date: 10:50:18 07/08/02
Go up one level in this thread
On July 08, 2002 at 13:27:15, Robert Hyatt wrote: >On July 08, 2002 at 12:48:58, Sune Fischer wrote: > >>On July 08, 2002 at 11:34:36, Robert Hyatt wrote: >> >>>>I too am a DB fan. Just like Bob. >>>> >>>>But I actually agree with you here. I don't think DB did anything >>>>*spectacular*. >>> >>>I totally disagree. Their speed _was_ "spectacular". And that was _the_ >>>point of Deep Blue, after all. Not the point everyone _wants_ to be the >>>point of deep blue, but _the point_ the team developed over 10 years... >>> >> >>Here is a crazy thought, why not simulate DB? >>Given all the papers, I think it should be possible to modify Craft to use the >>same eval and extensions. We turn off hashing, nullmove, SEE and whatever DB >>didn't have. Then we find a slow machine for Tiger and a super fast one for >>Crafty, so Crafty (in DB-mode) has a 200 nps fold advantage. >> >>Ok lot of work, but seems this is the never ending story :) >> >>-S. > > >This would be great if we had some of the DB guys helping. Unfortunately, >while they revealed a lot about various parts of DB, there is no single >comprehensive source paper to use as a reference. IE what are those 8,000 >unique eval terms in DB (some of those terms actually represent a matrix with >multiple values so it is actually more complex than that)? Ditto for some of >their search algorithms. They have given lots of 'hints' about things, but >significant implementation details are not available. > >IE something like trying to build a F-1 by looking at it run around the track. >There are _significant_ details that are not readily apparent from such >observations... Ahh, slight unforeseen problem. ;) Maybe you can get a copy of the source, it's not like Hsu has a big use for it anymore, unless he patented it or plans to some day revive the old legend? (he could always edit out the "top secret" parts :) I'm not even sure such a test would settle the discussion, but at least we would have an active open source playing machine to work with. -S.
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