Update for BigChess amp Poker rating rules

  

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Thibault de Vassal    (2011-02-02)
Update for BigChess & Poker rating rules

Hi all, it was a long time there wasn't any update in rating rules.

First of all, as the number of results at Poker Holdem is quite high, I feel that a change should be tried so that ratings move less fast.

Case of a win (rating > 1999) : New Rating = ((39 x Current Rating) + (1 x Performance)) / 40
Case of a win (rating < 2000) : New Rating = ((38 x Current Rating) + (2 x Performance)) / 40

Case of a loss : New Rating = ((39 x Current Rating) + (1 x Performance)) / 40

As for Big Chess, the ratings deflate because there isn't the same rule than in Poker or Advanced Chess, this is now fixed :

If there's a winner and if his rating is below 2000, his new rating his :

New Rating = ((18 x Current Rating) + (2 x Performance)) / 20

Otherwise :

New Rating = ((19 x Current Rating) + (1 x Performance)) / 20

This rule may look strange from a mathematical point of view, but combined to the other rules that provoke deflation, it gives really good results IMHO. Let's see how it works here.


Heinz-Georg Lehnhoff    (2011-02-06 14:06:40)
Update for BigChess & Poker rating rules

Hello Thibault,

the previous poker rating rules I like better - although I currently much benefit from the new ones :)


Thibault de Vassal    (2011-02-06 14:30:22)
Update for BigChess & Poker rating rules

Yes, ratings change more slowly, let's give it a try & continue the discussion, we'll make a step back if it doesn't prove to be better.