gamlr (version 0.1)

hockey: NHL hockey data

Description

Every even-strength goal from 2007-2011. Collected from nhl.com by Andrew Thomas.

Value

• Ygoals
  Response: +1 for a home goal, -1 for an away goal.
• Xteam
  Team info: +1 for the home team, -1 for the away team, zero otherwise.
• Xplayer
  Player info: +1 for a home team player, -1 for an away team player, zero otherwise.
• plusminus
  A list containing team and player plus-minus over the four seasons.

Details

The data comprise of information about teams and the players on ice (including goalies) for every even strength goal during the four regular seasons of 2007-2008 through 2010-2011. There were 1467 players involved in 18154 goals. All matrices are stored as slam simple triplet matrices.

References

Gramacy, Jensen, and Taddy (2013): "Estimating Player Contribution in Hockey with Regularized Logistic Regression." http://arxiv.org/abs/1209.5026.

Thomas, Ventura, Jensen, and Ma (2012): "Competing Process Hazard Function Models for Player Ratings in Ice Hockey." http://arxiv.org/abs/1209.5026.

Examples

data(hockey)

## fit a regularization path for 20 significant players
## team effects are unpenalized
fit <- gamlr(covars=cbind(Xteam,Xplayer), response=Ygoals,
               free=1:30, verb=1, family="binomial", scale=FALSE,
               stoparg=list(rule="maxvar", val=20))	
plot(fit)
summary(fit)