https://github.com/prillan/haskell-glicko

Haskell implementation of Glicko-2
https://github.com/prillan/haskell-glicko

glicko

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Haskell implementation of Glicko-2

• Host: GitHub
• URL: https://github.com/prillan/haskell-glicko
• Owner: Prillan
• License: gpl-3.0
• Created: 2015-11-10T12:33:17.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2021-01-13T20:14:51.000Z (almost 4 years ago)
• Last Synced: 2024-10-28T00:21:27.333Z (2 months ago)
• Topics: glicko
• Language: Haskell
• Homepage:
• Size: 34.2 KB
• Stars: 4
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Glicko

[![Hackage](https://img.shields.io/hackage/v/glicko.svg)](https://hackage.haskell.org/package/glicko)

[![Dependencies Status](http://img.shields.io/hackage-deps/v/glicko.svg)](http://packdeps.haskellers.com/feed?needle=glicko)

Haskell implementation of the

[Glicko-2 rating algorithm](http://glicko.net/glicko/glicko2.pdf) by Professor Mark E. Glickman.

## Building

Easiest is using stack.

```

$ git clone https://github.com/Prillan/haskell-glicko.git

$ cd haskell-glicko

$ stack setup

$ stack build

```

## Examples

The test case from the Glicko-2 paper is included in `test/Paper.hs`.

```

$ stack ghci

*Main> :l test/Paper.hs

*Paper> :m + Data.Default

*Paper Data.Default> mapM_ print $ compute players matches def

Player {playerId = 1

  , playerRating = 1464.0506705393013

  , playerDev = 151.51652412385727

  , playerVol = 5.9995984286488495e-2

  , playerInactivity = 0

  , playerAge = 1}

Player {playerId = 2

  , playerRating = 1398.1435582337338

  , playerDev = 31.67021528115062

  , playerVol = 5.999912372888531e-2

  , playerInactivity = 0

  , playerAge = 1}

Player {playerId = 3

  , playerRating = 1570.394740240854

  , playerDev = 97.70916852200307

  , playerVol = 5.999941947199381e-2

  , playerInactivity = 0

  , playerAge = 1}

Player {playerId = 4

  , playerRating = 1784.4217901320874

  , playerDev = 251.56556453224735

  , playerVol = 5.9999011763670944e-2

  , playerInactivity = 0

  , playerAge = 1}

```