#1 · Cane
12 May 2015
Hello!
Does anyone remember how ELO ratings are calculated here. I could not find the exact info easily thus I try to rely on someone else's memory...
Public forum discussion.
12 May 2015
Hello!
Does anyone remember how ELO ratings are calculated here. I could not find the exact info easily thus I try to rely on someone else's memory...
12 May 2015
Rating Change = 32 x ( Result - ( 1 / ( 1 + 10^(rating difference / 400) ) ) ).
Result is 1 for victory, 0.5 for a draw and 0 for a loss (except for street soccer, where results vary between 0, 0.2, 0.4, 0.6, 0.8 and 1, I think). Everything after "Result" in the formula is the "expected result". For a rating difference (opponents rating minus your rating) of 0, this is of course 0.5, which means you'll gain or lose 16 rating points. For a rating difference of 400, this is 1/11. So if you're 400 points below your opponent, you can gain 32 x (1 - 1/11) = 29.1 rating points, but if you lose, you only lose 32 x (0 - 1/11) = -2.9 rating points.
That is, if I remember correctly :-)
12 May 2015
Rating Change = 32 x ( Result - ( 1 / ( 1 + 10^(Rating Difference / 400) ) ) )
12 May 2015