Ratings.Glicko

Documentation

data Glicko

Constructors

Glicko

Fields

• _glickoRating :: Rating
• _glickoRD :: RD

Instances

Eq Glicko

Methods

(==) :: Glicko -> Glicko -> Bool

(/=) :: Glicko -> Glicko -> Bool

Read Glicko

Methods

readsPrec :: Int -> ReadS Glicko

readList :: ReadS [Glicko]

readPrec :: ReadPrec Glicko

readListPrec :: ReadPrec [Glicko]

Show Glicko

Methods

showsPrec :: Int -> Glicko -> ShowS

show :: Glicko -> String

showList :: [Glicko] -> ShowS

initialGlicko :: Glicko

Initial rating to use when we have no prior knowledge of a player's strength.

class HasGlicko a where

This type class forces the user to provide a static c value to be used for their whole system. Typically you'll provide a simple orphan instance for Glicko like this:

instance HasGlicko Glicko where
  mkGlicko = Glicko
  glickoRating = _glickoRating
  glickoRD = _glickoRD
  glickoC _ = 34.6

Alternatively, if you really want to avoid the orphan instance you can use a newtype wrapper around Glicko.

Minimal complete definition

mkGlicko, glickoRating, glickoRD, glickoC

Methods

mkGlicko :: Rating -> RD -> a

glickoRating :: a -> Rating

glickoRD :: a -> RD

glickoC :: a -> Double

updateGlicko

Arguments

:: HasGlicko glicko

=> Int

Number of rating periods since rating was last updated

-> [(glicko, Score)]

Outcomes against each player

-> glicko

Previous glicko strength estimate

-> glicko

New glicko strength estimate

Updates a player's glicko strength based on all outcomes in a single rating period.