glicko v0.2.0 Glicko

Provides the implementation of the Glicko rating system.

See the specification for implementation details.

Usage

Players can be represented by either the convenience Glicko.Player module or a tuple (see player_t). Results can be represented by either the convenience Glicko.Result module or a tuple (see result_t).

Get a player’s new rating after a series of matches in a rating period.

iex> results = [Result.new(Player.new_v1([rating: 1400, rating_deviation: 30]), :win),
...> Result.new(Player.new_v1([rating: 1550, rating_deviation: 100]), :loss),
...> Result.new(Player.new_v1([rating: 1700, rating_deviation: 300]), :loss)]
iex> player = Player.new_v1([rating: 1500, rating_deviation: 200])
iex> Glicko.new_rating(player, results, [system_constant: 0.5])
%Glicko.Player{version: :v1, rating: 1464.0506705393013, rating_deviation: 151.51652412385727, volatility: nil}

Get a player’s new rating when they haven’t played within a rating period.

iex> player = Player.new_v1([rating: 1500, rating_deviation: 200])
iex> Glicko.new_rating(player, [], [system_constant: 0.5])
%Glicko.Player{version: :v1, rating: 1.5e3, rating_deviation: 200.27141669877065, volatility: nil}

Link to this section Summary

Types

new_rating_opts_t()

player_t()

player_v1_t()

player_v2_t()

rating_deviation_t()

rating_t()

result_t()

score_t()

version_t()

volatility_t()

Functions

new_rating(player, results, opts \\ [])

Generate a new rating from an existing rating and a series (or lack) of results

Link to this section Types