Author: James T. Walker
Date: 13:44:17 11/02/04
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On November 02, 2004 at 08:22:10, Sune Fischer wrote: >On November 02, 2004 at 07:42:24, James T. Walker wrote: > >>Just plot a graph with 999 data points all with a value of zero. Then plot >>another graph of 1000 data points all with a value of zero. Then compare the >>difference. >>Jim > >Ratings can become negative, so zero is not the lowest rating possible you can >get. Zero is actually an arbitrary number you just picked out of nowhere, you >might as well have said -1000. > >The proof of this is easy, even without knowing the formula. Just consider the >1400 guy and someone who is 400 ELO weaker, then consider one that is 400 ELO >weaker than him and so on, you quickly get negative ratings. > >I don't know what the lowest rating is, even if you assume perfectly worst play >your opponent might also be playing perfectly bad or close enough to that so you >don't lose every time. >You can thus never get an expected score of 0 and an equivalent rating of >-infinity. > >-S. What is your point?
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