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sublee / trueskill

An implementation of the TrueSkill rating system for Python
https://trueskill.org/
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how can i take a match's score into account ? #41

Open leElvyn opened 3 years ago

leElvyn commented 3 years ago

Hey, i would like to know if it was possible to take into account a match's score using true skill ?

The idea would be that a match with a score of 3-2 won't lower the score of the loser as much as a `3-0. Is this something that can be done in trueskill ?

bernd-wechner commented 3 years ago

Short answer: No

Long answer: TrueSkill could be modified to cope with it yes. And it's essentially been done, and is called TrueSkill 2:

https://www.microsoft.com/en-us/research/publication/trueskill-2-improved-bayesian-skill-rating-system/

But there is not (my knowledge any coded implementation available in the FOSS environment that implements it). If you were up for it I could certainly provide you with all the background literature and pointers in the right directions. That presupposes some skill and interest in the area of math especially Bayesian modelling and software implementations (and would presuppose a study of Factor Graphs and other tools that TrueSkill leans on).

leElvyn commented 3 years ago

Ok, thanks, that's a really interesting answer. Unfortunately, i don't think i have the required competances in math or python to do that kind of stuff.

Tho, would just running the rate_1vs1 3 times in case of a 3-0and only one time in case of 3-2 would be a correct sollution ?