Trueskill

a data frame (<code><a rd-options="" href="/link/data?package=trueskill&version=0.1" data-mini-rdoc="trueskill::data">data</a></code>) with columns: Player, Opponent, margin.

data

<code><a rd-options="" href="/link/Parameters?package=trueskill&version=0.1" data-mini-rdoc="trueskill::Parameters">Parameters</a></code>  object to hold input variables.

parameters


    Trueskill function to be applied to tournament data in dataframe format.
  
    Data is required to be in long format with two rows for 
    each match, one with player 1 first and one with player 2 
    first. 
    
    Matches should be sorted such that the second copy
    of the match appears in the second half of the dataframe. 
    
    The package currently only supports the trueskill 
    algorithm with one player per team. Should this not match  
    the data you are interested, a function could be written from  
    AdjustPlayers, Player and Gaussian, and SetParameters.
    
    An example is provided at <a href="https://gist.github.com/bhoung/5596282">https://gist.github.com/bhoung/5596282</a>
    (runtime is approx 50 secs).


An implementation of the TrueSkill algorithm (Herbrich,
R., Minka, T. and Grapel, T) in R; a Bayesian skill rating
system with inference by approximate message passing on a
factor graph. Used by Xbox to rank gamers and identify
appropriate matches.
http://research.microsoft.com/en-us/projects/trueskill/default.aspx
Current version allows for one player per team. Will update as
time permits.  Requires R version 3.0 as it is written with
Reference Classes.  URL:
https://github.com/bhoung/trueskill-in-r Acknowledgements to
Doug Zongker and Heungsub Lee for their python implementations
of the algorithm and for the liberal reuse of Doug's code
comments (@dougz and @sublee on github).

Trueskill: Apply Trueskill to Tournament Data

Description

Usage

Arguments