Author: blass uri
Date: 17:10:17 02/23/00
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On February 23, 2000 at 19:54:40, Dann Corbit wrote: >On February 23, 2000 at 19:49:38, blass uri wrote: >[snip] >>I know that the theory is based on mathematics but it is possible to do a >>different theory that say that >> >>if people with 2400 earn 36% of the points against people with 2500 >>and people with 2300 earn 36% of the points against people with 2400 >>then >>people with 2300 earn 26% of the points against people with 2500 >> >>I see no reason to assume that 24% is correct and not 26% or 22% unless 24% is >>based on practical results of games and I know that the probabilities are not >>based on practical results of games(I know that the probabilities are based on >>the assumption that the ability of players has a normal distribution with 200 >>wlo standard deviation) >> >>The only way to have a better guess about the probabilities is to count results >>of games between people with 100 elo difference and between people with 200 elo >>difference but I do not know about somebody who did it. > >The way the ELO figures are computed is from actual games. Since the games are >used to compute the curves, the results are accurate. Of course, they do >require a huge number of trials to get an accurate figure. > >In other words, the actual games themselves determine the ELO, not the other way >around. Suppose that a wins against b 64:36 b wins against c 64:36 The question is what is the expected result of a against c based only on this information. If it is not 76:24 then the rating is based on wrong assumptions. I do not know about investigation of the results between a and c It is possible to find the differnece in elo rating that produce practically 64:36(suppose it is 100 elo) now it is possible to check if differnece of 200 elo gives result that is practically different then 76:24 Uri
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