Author: Graham Laight
Date: 16:47:10 01/06/00
Go up one level in this thread
On January 06, 2000 at 17:20:44, Robert Hyatt wrote: >On January 06, 2000 at 10:43:29, Graham Laight wrote: > >>On January 06, 2000 at 10:23:46, Robert Hyatt wrote: >> >>>It is more than anecdotal. There is no contrary evidence at all, so far, other >> >>I don't agree - I think that the SSDF list represents "evidence", because they >>have long experience of every level of play the computers have reached since >>1984 or 1985. >> > > >What does the SSDF rating list have to do with whether a computer is at a GM >level or not? You could add or subtract 400 points from every rating on their >list, and things would still be just as valid according to the Elo formula. >The 'spread' between two programs on the SSDF list is correct. The absolute >value of the ratings are over-inflated. Or do you believe that a computer is >really playing at 2700 and is in the top 10 in the world? > >I don't... If the 'spread' is correct, then the absolute values must also be right - because the SSDF list is known to correlate well with FIDE ratings UP TO A CERTAIN LEVEL (though it is admitted to be 20-30 points too high). I think that you are saying that, relative to the FIDE ratings, the spread is too great at the high end. If it is true that the SSDF ratings correlate well with the FIDE ratings up to, say, 2400 points (which probably is true), then what I think you are telling me is that, for those computers above 2400 on the SSDF list, the gap between them is too big, and that therefore the higher you get on the SSDF list, the more overinflated the scores are, relative to human players. >>>than 'opinion polls'. Let's watch the Rebel games. That will be a reasonable >>>guage... >> >>Certainly. Even better if the SSDF take up Ed's offer to test Rebel Century. >> >>-g > > >That doesn't help a bit for the SSDF rating numbers. Their rating pool of >players has nothing whatsoever to do with FIDE, so the ratings can't be compared >at all. If they wanted, they could take rebel-10's eventual TPR as a real FIDE >rating, then enter Rebel into the SSDF testing cycle, and when it finishes, >reduce everyone's rating by X so that rebel's SSDF rating matches its TPR rating Agreed. >for the GM challenge matches. I think that X will be 200 points or more, IMHO. In my opinion, which is equally humble (of course!), Tiger's FIDE rating is probably about 2660 - I don't think that this is quite in the top 10. -g
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