Erlang implementation of TrueSkill
TrueSkill is a kind of Bayesian inference algorithm for game rank and match, has been used on Xbox Live. TrueSkill support 1:1,N:M, N:M:J:K game.
rebar3 compile# create player
1> P1 = trueskill:new_player().
{ts_player,25,8.333333333333334,0.014399999999999998,
0.35999999999999993,0}
2> P2 = trueskill:new_player().
{ts_player,25,8.333333333333334,0.014399999999999998,
0.35999999999999993,0}
# create team
Team1 = [P1].
Team2 = [P2].
Team3 = [trueskill:new_player(), trueskill:new_player()].
# show the quality of the game
6> trueskill:vs([Team1, Team2]).
0.44721359549995787
# adjust player's rank by game result,
# in this case, Team1 get rank 1 and Team2 get rank 2
7> trueskill:adjust([Team1, Team2],[1,2]).
[[{ts_player,29.39583201999916,7.171475587326195,
0.019443880858302023,0.5715690555275234,0}],
[{ts_player,20.604167980000835,7.171475587326195,
0.019443880858302023,0.4006249873875777,0}]]MIT