Guest post: Pomeroy Has Come Around To the ANE Model

By RICHARD CHEEKS

For years, I have advocated and used the Adjusted Net Efficiency (ANE) as the primary criteria to compare teams in college basketball.  Ken Pomeroy, the widely recognized guru of college basketball analytics, has used a measure he called the Pythagorean Factor, an archaic concept adopted from major league baseball and modified to fit Pomeroy’s idea of how college basketball should operate.

However, while the Pomeroy rating system has been widely praised, there is absolutely no theoretical basis for this methodology other than “it seems to work” while the factors that define the ANE are based on established relational factors between the manner in which the game is played and the eventual outcome of games.

Pomeroy appears to have shifted during this off season to the ANE measure and abandoned the Pythagorean measure.  Check it out here:

http://kenpom.com/index.php

Here is Ken Pomeroy’s announcement of his change and his explanation.  Remember, you heard about ANE here first, and have heard about it since the 1990s from BigBlueFans4UK.com.

http://kenpom.com/blog/ratings-methodology-update/

He calls the ANE the “AdjEM” which he calls the “Adjusted Efficiency Margin.”  That is exactly what I have called the ANE for many years.  I have no idea what convinced Pomeroy to make this change, but I am not only pleased that he did so, but I am very proud to have long used and advocated for this very measure.

3 comments

  1. He Prof don’t hurt your arm patting yourself on the back. :).

    1. Hey UKFMLY I’m still laughing at that one, that was a good one. Are we having a little fun with the hard working Professor? I will say this, He looses me, and that is not hard to do, but he is great at what he does if you like that sort of thing. I don’t get into scientific analysis when it comes to sports all that much. Stats mean little to me. I just hope my team outscores the other team by the end of the game. The other stat I watch closely is the won/loss record. That is the one that really matters.

      1. Yeah just poking fun. The Prof knows I like and look forward to his pre and post game numbers always have. Kind of a numbers guy myself and he can loose me sometime too.

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