Author: Ed Schröder
Date: 15:11:50 09/30/99
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On September 30, 1999 at 12:55:40, Robert Hyatt wrote: >On September 30, 1999 at 10:17:11, Dave Gomboc wrote: > >>On September 30, 1999 at 02:43:32, Jeremiah Penery wrote: >> >>>On September 29, 1999 at 19:43:43, Robert Hyatt wrote: >>> >>>>On September 29, 1999 at 19:21:08, Jeremiah Penery wrote: >>>> >>>>>Doesn't Rebel not use null-move? >>>>> >>>>>Jeremiah >>>> >>>> >>>>without the contraction: >>>> >>>> >>>>"does not Rebel not use null-move?" >>>> >>>>Damned if I know, as I can't parse that. :) >>>> >>>>But I do get your point... :) >>>> >>>>Bob >>> >>>:) >>>I originally intended to write something along the lines of "I don't think Rebel >>>uses null-move." I figured a question would be better, since I wasn't sure, but >>>I couldn't figure out how to phrase it correctly. :P >>>I revise: "I think Rebel doesn't use null-move. True?" :)) >>> >>>Jeremiah >> >>Ed has said here in the past that he doesn't use null-move. >> >>I think this was distinct from "doesn't use the null-move in the same way as >>e.g. Crafty does". >> >>Dave > > >No idea. Hiarcs doesn't use null-move like I do, but it definitely suffers from >problems with the "null-move observation" being used in some way. Ed has said >he does some threat extensions... they probably use the "null move observation" >as well.. in some fashion... No null-move in Rebel. Rebel's evaluation function is much to slow for null-move. Besides of that my evaluation function provides me so much data I don't need null-move. I tried null-move once and it gave me a speed-loss of 25%. Ed
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