Author: Torstein Hall
Date: 15:40:52 11/17/00
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On November 17, 2000 at 18:33:54, Uri Blass wrote: >On November 17, 2000 at 18:23:30, Torstein Hall wrote: > >>On November 17, 2000 at 17:44:50, Uri Blass wrote: >> >>>On November 17, 2000 at 17:20:25, Fernando Villegas wrote: >>><snipped> >>>>c) If it is not, how this entity compares with Schredder IF two top programs are >>>>harnessed toguether? I suppose many experiment has been already performed before >>>>delivery. >>> >>>I think that it is has some rules based on evaluations and main lines. >>> >>>Example 1:If engine A fail low after 1 second and engine B fail low after 10 >>>seconds with the same main line then it is logical to assume that engine B is >>>weaker in tactics in the relevant position so it is logical to choose engine A. >>> >>>Example 2:If engine A shows evaluations:+1.1 and the evaluation goes down to 0.5 >>>when engine B has stable evaluation of 0.0 then it is logical to assume that >>>engine B understands the position better(I usually expect +1.1 to go up and not >>>to go down) so it is logical to choose engine B. >>> >>>I do not know if Shredder is using similiar ideas but this is the ideas that >>>seem to me logical to try in order to be correct most of the time in choosing >>>the right engine in cases when both engines have equal strength. >>> >>>Uri >> >>I feel that such a beast must be weaker than a normal program, as it have to >>waste a lot of computing time. First two engines computing the same pos. Then >>the third engine etc. etc. >> >>Torstein > >I disagree because of the following reasons: > >1)The third engine may have a simple rule to decide so it practically may waste >less than 1% of the time. Probably true! >2)The two engines do not use the same time so it can be clearly less than twice >slower because the playing engine may be used 90% of the time. > This I think (or feel)must be wrong. Both engine A and B have work on the position at first for the engine 3 to deside on them. So in effect you lose a lot before you deside. And if you only switch engine rarly, I feel that somehow the idea loses much of its point. But perhaps Stefan can tell us more? Torstein >Uri
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