Author: Dann Corbit
Date: 17:12:46 09/18/00
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On September 18, 2000 at 19:00:49, Christophe Theron wrote: >On September 18, 2000 at 17:42:06, odell hall wrote: > >>Hello CCC >> >> >> How many think the new SSDF List is relatively Accurate? Personally I commend >>SSDF for doing a outstanding Job, Based on my observations of the grandmaster >>Challenge and other 40/2 events, I think the list is very reliable. >>I believe it is safe to say that any top program running on a K62-450 is 2500 >>elo, or very near. I think that now that the rating has been significantly >>lowered, this list will be taken far more seriously in determining Fide rating >>for Modern Programs. I am curious if some skeptics of the List in the Past, >>consider the list still to high, or Just about right? Opinions Welcome > > >I guess the adjustement was justified for the top programs on recent hardware, >but for the older programs on slow hardware the change has been really unfair. > >I'm talking about the dedicated chess computer around 1900-2200 elo. Now they >are rated 1800-2100 elo, which is probably not fair at all. > >It would have been better to do the change differently. Maybe by adding the >games against human players in the SSDF database, giving them a higher weight >than the comp-comp games, then recompute all the ratings based on this. > >I don't know if it is the best way, but just decreasing the whole list by 100 >elo points is not exactly a scientific method. > >The good thing is that it will stop the main critisism against the SSDF list, I >mean people saying that the computers were overrated. > >I'm a strong supporter of the SSDF list. This is why I believe I can tell >franckly my opinion about this change. :) It makes no difference what number they add or drop from the list. An ELO value prediction is purely based on differences. (x + 1000) - (y + 1000) is identical to (x-y). The adjustment has no impact whatsoever on the figures. If it makes some people happy, it just means that they had no idea what the figures meant in the first place. In any case, I would be rather surprised if the new numbers fit human players better unless the adjustment was based upon a large collection of real data. If it had been based on a large collection of real data, that would have been a pretty exciting experiment, and I think we would have heard about it. Hence, my conclusion is that the change was made solely to hush the wild beasts of the forest who feared the big and mighty numbers but will be calmed by the melodious tones of n-100 music.
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