APBRmetrics

Most of the time it's easy to figure out who's on the court. For the times you don't know, or if you have conflicts, you can figure out pretty well who was playing at a given moment in the game using the stats.nba.com API. Just tweak the StartRange and EndRange to the appropriate time (it's based on...

I've spent the last few weeks prototyping a charting tool. As a first step, I created a tool that allows you to append the location of a rebound, assist, or foul for a given entry in an NBA game's public play by play data. Here's the tool for the Heat-Mavs game on 11/15: http://vorped.com/bball/inde...

I'm missing 5 games. But regardless, here's the 2012-2013 regular season. date,away,home,attendance 2012-10-30,DAL,LAL,18997 2012-10-30,WAS,CLE,20562 2012-10-30,BOS,MIA,20296 2012-10-31,MEM,LAC,19060 2012-10-31,SA,NO,15358 2012-10-31,DAL,UTA,17634 2012-10-31,DEN,PHI,19101 2012-10-31,HOU,DET,16646 20...

I stumbled upon your site and have to say it is quite impressive. Have you read Basketball on Paper by Dean Oliver before? It covers this pretty well and I love your idea of setting it up like this. You could include which zone the player shot from at the end of the line. If you haven't read the bo...

I've been prototyping a play by play data entry tool, primarily because I thought we haven't been capturing enough useful data (publicly) to do more interesting kinds of data analysis. I couldn't find many existing tools, so I selfishly created one for myself. I would LOVE feedback, because I have n...

https://www.dropbox.com/s/78mhp7k4h91f7lp/ncaa_men.svg

I'm assuming you mean men's NCAA basketball court. I'm also curious, what do you need it for?

kpascual, Thanks for this fascinating breakdown. Do the posted expected values (points per shot) incorporate the free throws that ensue (probabilistically) as a consequence of shot attempts and shot types from these various locations? If not, do you have the capability of computing and posting a si...

My scraper is open-source: https://github.com/kpascual/nbascrape

I believe I need to update the SQL schema, otherwise an error gets thrown, but once done it should work pretty easily.

Uh, I don't know how you get the last two data points from public data. The first two you can. Here's what's in my dev database, which has like 2 years of data or something. Shotzones are defined in the 82games style (1-5 = 3pointers, 6-10 long twos, 11-14 paint), all via NBA.com. | shot_type | shot...

Hi all, I'm a long-time casual reader, but this is my first post. Looking forward to joining the online community. kpascual, you gave this link for http://stats.nba.com/stats/playbyplay?GameID=0021000001&StartPeriod=0&EndPeriod=10. Can you explain how you accessed the page in that format? T...

Here are my thoughts on the subject of all the hard work in data collection.... Yes, it's true that most of the work that goes into adjusted +/- is working with play by play data and organizing into something workable. It takes skill, time, and patience to do that. The results are extremely valuabl...

Hi Megan, That's a nice tool you've created. There are a few sites that have attempted to do play by play visualization, like NBAGraphs, Popcorn Machine. I've tried myself. I think the challenge with this kind of visualization is representing the game events in an easy-to-understand manner. The colo...

My question wasn't about the stat or the statistical method itself, I understand how regularized regression works. It's really about model selection within the context of communicating it to another person so that they do something with it. Applied statistics, I suppose. It's my opinion that a simpl...

Is ridge regression "better" than a relatively simpler model? And by "better", I'm thinking not just in terms of predictive power, but also explain-ability. I'm sure you could prove that a ridge-regressed model has lower error/is more predictive than a vanilla OLS or even simpler...

The play by play data does exist. NBA.com has play by play data for 1997-2000. But someone has to parse out the pbp data so that there can be a APM/RAPM analysis done for the 97-2000 seaons. If it exists and you know where it is, why can't that someone be you? I'll quote DJ Patil in saying "80...