Author: Rolf Tueschen
Date: 09:07:35 01/23/04
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On January 23, 2004 at 11:57:38, Igor Gorelikov wrote: >On January 23, 2004 at 10:12:00, Rolf Tueschen wrote: > >>Two progs stand at the top. One is number one in the ranking. But is it really >>stronger than prog number two??? >> >>The answer is easy. If the normal variation, this famous +- value in the SSDF >>list is say +-40 points and the difference between progs is 35 points THEN we >>are unable to conclude anything for sure. It could be that 1 is stronger than 2 >>but also the contrary could be true. Only from values >40 on we have >>"certainty", statistically, that a prog in that specific design is proven >>stronger than another one. >> >>This is all so simply and trivial that it is satifying to be able to clarify. >> > >Not so simple. >The difference between programs depens also on pool size. >In small pool difference between the same programs should be bigger. Yes, correct. That was exactly what I said myself. To be "sure" that a difference is relevant it must be - if the "pool" is small - bigger than it is neccessary for a bigger pool. But the other expert formerly expressed that he could give a meaning to a difference of 1 Elo point. That however sounded like hair-splitting to me at least. :) > >There are no simple things in relativity that is ELO ;-) Certainly not. The whole topic isn't also free of contradictions. One single hair left on your head is seen as too little, almost nothing, while 1 hair in your soup is regarded as too much. Honestly I don't look through all this relativity. :) Regards, Rolf > >regards, >Igor Gorelikov
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