News

elo v1.1.0

• Widened the version dependency to R 3.3.0.

• Allowed players() matrices in elo.run() to find Elos of individual players playing at the same time.

• Added elo.glm(), a simple function to run logistic regressions on Elo setups.

• Fixed a bug in the favored() function (used in summary.elo.run()). (#29)

• Exported and revamped the class structure of the specials allowed in formulas. (#30)

• Allowed access to elo.model.frame() even when the package isn't loaded. (#34)

• Allowed regression to different values for each team. (#35)

elo v1.0.1

Smaller Changes

• Fixed a bug with initial Elos and deep copying in C++. (#25)

• Added an argument to regress() allowing users to stop regressing teams which have stopped playing. (#26)

elo v1.0.0

This version is not backwards compatible!

Major Changes:

• Changed the signatures of elo.calc() and elo.update() to match formula interface.

• Changed elo.calc(), elo.update(), and elo.prob() to S3 generics, and implemented formula methods. The default methods now include options to adjust Elos. (#3)

• elo.run():

  • elo.run() no longer accepts numeric values for team.A.

  • elo.run() now accepts special functions group() and regress(). If the latter is used, the class of the returned object becomes "elo.run.regressed". (#11, #12, #19, #22)

  • The $elos component of "elo.run" objects has been completely reworked, and now uses 1-based indexing. Because of this, the print.elo.run() method also had to be fixed. (#16)

• Renamed last() to final.elos() (#9).

• Changed tournament dataset.

Smaller Changes:

• The elo package now imports pROC::auc().

• elo.prob() now accepts vectors of team names (like elo.run()) as input. (#6)

• Documentation and the vignette have been updated.

New Functions:

• Implemented elo.model.frame(). The output is a data.frame with appropriately named columns.

• Implemented predict.elo.run() and predict.elo.run.regressed(). (#2, #19)

• Added is.score() to test for "score-ness".

• Implemented summary.elo.run(), along with helpers to calculate AUC and MSE (auc() and mse()). (#15)

elo 0.1.2

• Fixed a spelling error in DESCRIPTION.

elo 0.1.1

• Made the title more succinct.

• Elaborated the description of the package.

• Tweak the internal "elo.run" object.

• Tweaked the README and vignette.

elo 0.1.0

• Submit first version of elo to CRAN.

• Issues and code can be found on GitHub: https://github.com/eheinzen/elo/

Reference manual