Support for more than two teams in Weng-Lin about skillratings HOT 6 CLOSED

Hi, thanks again for the request!

I have been looking into multi-team rating for a bit for the TrueSkill algorithm, but since that is quite complex I have only a non-functioning prototype that I have always put off fixing. I think it should be easier for the Weng-Lin algorithm. If you want to go ahead, it would be much appreciated of course!

As for the API, it will not be compatible with the Outcomes enum. I would be fine with either a new enum or just type called something like MultiTeamOutcome or FFAOutcome or whatever sounds the best, and having a rank as usize inside it indicating team placements. Or just passing in the rating groups together with a usize indicating the rank directly into the rating function (Like the argument would be rating_groups: &[(&[WengLinRating], usize)]). But I am also open for something else if you have a better suggestion.

from skillratings.

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Is MultiTeamOutcome supposed to be passed into a function in a tuple, just like usize example?

from skillratings.

Is MultiTeamOutcome supposed to be passed into a function in a tuple, just like usize example?

I could see having either either rating_groups: &[(&[WengLinRating], MultiTeamOutcome)], or rating_groups: &[&[WengLinRating]], outcomes: &[MultiTeamOutcome] working fine, what do you think?

from skillratings.

I like former one more I guess.

from skillratings.

What should be the name of this new function? Or should the original team function be modified instead?

from skillratings.

What should be the name of this new function? Or should the original team function be modified instead?

I like having a Team vs Team function as a shortcut, with more efficient calculations, so I personally would say we re-name the original function weng_ling_two_teams (or similar) and name the new function weng_lin_multi_team. I think the naming might be confusing to users otherwise. But, as always, I am open to better suggestions.

from skillratings.