Author: Sune Fischer
Date: 03:39:59 11/04/04
Go up one level in this thread
On November 03, 2004 at 18:40:18, James T. Walker wrote: >On November 02, 2004 at 19:17:19, Sune Fischer wrote: > >>On November 02, 2004 at 16:44:17, James T. Walker wrote: >> >>>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? >> >>To inform you that zero is arbitraty value, and that it isn't constant because >>even if his rating is 0 his expected score will be higher than 0. >>So he will lose rating if he doesn't score anything. >> >>-S. > >The zero I mentioned was not arbitrary at at all. It was not a rating but a >score of a game (0/.5/1.0). Nobody in the USCF has a rating less than 100 >because that is the rating floor for all. So I still don't see the point of >your ramblings. >Jim Sorry, you have to ask someone else to explain it to you then, I cannot do it any better. -S.
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