License	GPL-3
Maintainer	prillan91@gmail.com
Stability	experimental
Safe Haskell	None
Language	Haskell2010

Ranking.Glicko.Types

Contents

Data types
Lenses
- Player
- Match

Description

For examples, see Core and Inference.

Synopsis

Data types

data Player Source

Data type representing a player's Glicko rating.

(NOTE: The system assumes Glicko ratings, to convert to Glicko-2 , use oldToNew)

Constructors

Player
Fields _pid :: PlayerId Player id, can be anything _rating :: Double Rating _dev :: Double Deviation _vol :: Double Volatility _inactivity :: Int Inactivity (not part of Glicko-2), keeps track of the number of rating updates a player has been inactive. _age :: Int Age (not part of Glicko-2), keeps track of the number of rating updates since the player was added.

Instances

Eq Player Source
Show Player Source
NFData Player Source

data Match Source

Constructors

Match
Fields _pla :: PlayerId _plb :: PlayerId _sca :: Score _scb :: Score

Instances

Eq Match Source
Show Match Source

type PlayerId = Int Source

type Score = Int Source

newtype ScoreFunction Source

ScoreFunctions are used in compute to evaluate two players performances against eachother. It should obey the following laws,

0 <= compareScores x y

1 >= compareScores x y

compareScores x y == 1 - compareScores y x

The default implementation is

\s1 s2 -> case s1 `compare` s2 of
            LT -> 0
            EQ -> 0.5
            GT -> 1

Constructors

ScoreFunction
Fields compareScores :: Score -> Score -> Double

Instances

Show ScoreFunction Source
Default ScoreFunction Source

data GlickoSettings Source

Provides the compute function with parameters. See http://glicko.net/glicko/glicko2.pdf for an explanation.

(NOTE: scoreFunction is not a part of Glicko-2)

The default settings are as defined in the above paper.

Constructors

GlickoSettings
Fields initialRating :: Double initialDeviation :: Double initialVolatility :: Double tau :: Double scoreFunction :: ScoreFunction

Instances

Show GlickoSettings Source
Default GlickoSettings Source

Lenses

Player

pid :: Lens' Player PlayerId Source

rating :: Lens' Player Double Source

dev :: Lens' Player Double Source

vol :: Lens' Player Double Source

inactivity :: Lens' Player Int Source

age :: Lens' Player Int Source

Match

pla :: Lens' Match PlayerId Source

plb :: Lens' Match PlayerId Source

sca :: Lens' Match Score Source

scb :: Lens' Match Score Source