Author: James T. Walker
Date: 10:05:08 10/10/99
Go up one level in this thread
On October 10, 1999 at 11:48:19, Harald Faber wrote: >On October 10, 1999 at 10:07:11, Robert Hyatt 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. >> >> >>It is the perfect way to find out what PB is worth with no other degrees of >>freedom in the experiment. Different programs would break the experiment as >>you start off with two variables, (a) program characteristics and (b) PB on/off. > >(a) is no disadvantage, it is advantage! It doesn't break, it makes it senseful! >Read my other post. > >>using two programs is an ok idea, but this approach does highlight the >>difference between PBon and PBoff pretty clearly. > >?? >Wasn't it you who once argued against playing a program vs the predecessor, so >where is the difference now when playing the same program against itself?? >I wouldn't even expect a 50% score both programs playing with the same settings. Hello Harald, I once played a match of Crafty/tablebases vs Crafty/no tablebases. The tablebases I had were only a few 5 man(No KRPKR) so the tablebases were essentially useless. The score was 201.5 to 198.5. (The tablebases Crafty won) So I think it is reasonable to expect a program to play even against itself. Jim Walker
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