Jan 7 2010

Adjusting Individual Defensive Efficiency Ratings

Tweet A couple of months ago I presented individual defensive efficiency ratings for the 2008-09 regular season that I extracted from play-by-play data. In this post I will present a method for adjusting these ratings in an attempt to get a clearer picture of a player’s defensive abilities. Adjusting the Defensive Ratings To adjust these [...]

Oct 30 2009

Individual Defensive Efficiency Ratings Extracted from Play-by-Play Data

Tweet In my last post I presented individual offensive efficiency ratings that were extracted from play-by-play data. In this post I will present individual defensive efficiency ratings that I have extracted from play-by-play data. As with the individual offensive efficiency ratings, I’ve constructed these individual defensive efficiency ratings in a similar fashion as Dean Oliver [...]

Oct 5 2009

Is One Lineup Better Than Another?

Tweet One part of Wayne Winston’s new book Mathletics that I didn’t really like was the way he compared raw lineup data to determine if one lineup is better than another. After thinking about it more, I think the real reason I don’t like his method is because he compares the lineups’ net points per [...]

Sep 7 2009

A Basic Hierarchical Model of Efficiency

Tweet In my last post on retrodicting team efficiency, I set a general baseline that can be used help determine if a new model of team efficiency makes better predictions than a naive model. This is important, as we want to know if added model complexity is worth the hassle. This post will present a [...]

Aug 30 2009

Retrodicting Team Efficiency

Tweet Regardless of the many models we may examine, we are ultimately looking to predict team efficiency. To move in this direction, we have to know how well the most basic methods predict team efficiency in order to determine if more complex methods are actually better than a simpler model. Retrodiction versus Prediction To best [...]

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