Author: Peter Kappler
Date: 09:18:11 10/10/99
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On October 10, 1999 at 04:00:21, Mark Young wrote: >On October 10, 1999 at 03:22:13, Harald Faber wrote: > >>On October 10, 1999 at 03:14:10, Ed Schröder wrote: >> >>>PB-ON vs PB-OFF (results experiment-1) >>> >>>To enrich the discussion about the value of the "Permanent Brain" (PB) I >>>have started 2 experiments with Rebel Century (RC) which will give some >>>data for a better judgement. >>> >>>Experiment-1: >>>RC (PB=ON) vs RC (PB=OFF) >>>100 auto232 games >>>Time control: 60 secs average. >>>Hardware: 4xPII-266 + 2xPII-450 >>>Result: 61-39 >>> >>>Experiment-2: >>>RC (PB=ON) vs RC (PB=OFF) >>>100 auto232 games >>>Time control: RC (PB=ON) 30 sec average >>>Time control: RC (PB=OFF) 60 sec average >>>Hardware: 4xPII-266 + 2xPII-450 >>>Status: in progress >>> >>>Ed Schroder >> >>Sorry Ed, but where is the sense in it? Is there any difference than playing >>Rebel10-Rebel9 which is also meaningless? >>Would you expect a result of 50-50 when both playing PB=on or both PB=off? I >>wouldn't. >>I think the most interesting idea is to take Rebel+PB=on against another program >>with PB=on and as comparison play the same match with both PB=off. Of course you >>can extend this to Rebel+PB-vs-Opp X PB=off and Rebel PB=off vs Opp X PB=on. >> >>But Rebel vs Rebel, sorry, there is really no sense in it. > >You hit the nail on the head...this has been the argument. playing both programs >with PB off as you do with one computer. > >His experiment is meaningless. I'm afraid I agree. The original debate was whether single-computer winboard matches (pondering=off) could produce reliable results. Everybody understands that playing with ponder=off will weaken a program. What isn't so clear is if weakens 'program X' more than 'program Y'. Ed's experiment does nothing to answer this question. (Perhaps he can repeat his X vs. X experiment with other programs - that would produce some useful information for comparison.) --Peter --Peter
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