http://stats-for-the-nba.appspot.com/ratings/ASPM.html http://www.nbastuffer.com/component...tid,42/func,view/term,Statistical Plus-Minus/
I wish they would expand on this. Which particular cases and why is it "might be" better indicator? I think the year-end xRAPM combines the two, in order to weigh both stats and team contribution. FWIW, if you add both stats together, RAPM+ASPM, the Rockets players would rank like this First number ASPM, second RAPM Howard 1.7+2.4=4.1 Harden 2.0+2.4=4.4 Parsons 1.6+0.7=2.3 Beverley -2.9+5.1=2.2 Jones 0.2+ -2.5= -2.3 Lin -0.9 + -0.3 = -1.2 So in conclusion Howard and Harden put up massive stats and teams play awesome with them. Beverley puts up miniscule box score stats but team play elite with him. Parsons is more box score oriented but overall team is plus with him. Jones put up good box score stats but team play is lacking. Lin put up below average stats and team play below average with him. Overall seems like a pretty good description of our team.
The usage of "box score" here is kind of misleading. He actually uses a lot of stats that aren't available directly in the boxscore, but rather are from the play-by-play. Let's say we define "top-down" stats as those which assess a player's value based on how much better the team performs when he's on the floor versus someone else, and "bottom-up" stats as those which assess a player's value based on the specific things he does on the court. Then what SPM is essentially trying to do is predict a player's "top-down" rating based on his "bottom-up" stats. I think think its an interesting and useful way to analyze a player's contributions.
