APBRmetrics

Has anyone here had success breaking RAPM into offensive and defensive splits that make sense? As I mentioned, I was able to get some solid overall RAPM numbers thanks to help from mystic, but I'm having some problems while trying to get the splits of the data. The two methods of which I am aware of...

It's been a while since I've looked at RAPM-type data... can you spell out what the non-x variables are? In particular, how did you make y and the weights? I assumed y is point differential per 100 possessions and weight is the number of possessions for a particular match-up, but then I don't think...

I just want to reiterate what Mystic said here. It's basically how I calculate RAPM. Alpha >0 means the model will drop some variables, and the whole point of RAPM is to calculate estimates for every player. Alpha = 0 means it's a ridge regression. Also, you can play around with the penalty factor....

These results look like no regression to the prior/mean is occurring (i.e. this is pure APM). I'm almost certain that's what's happening. I don't know enough about the code to troubleshoot it though. Anyone else? Well, there is some regression to the mean, because the used lambda is bigger than 0 (...

DSMok1 wrote:These results look like no regression to the prior/mean is occurring (i.e. this is pure APM). I'm almost certain that's what's happening. I don't know enough about the code to troubleshoot it though. Anyone else?

I'm getting lambda.1se = 5.146436 if that means anything to anyone.

Thanks for the help everyone, and especially thanks to mystic with whom I've received a lot of tips via pm. I sent this message to him yesterday, but I thought I'd post it here in case anyone had an idea of what I may be doing wrong with my RAPM calculations. So I downloaded the 2012 regular season ...

based on reading the glmnet documentation , i would think it involves creating a vector of your priors and using it as the "offset" parameter Thanks for your response. I was looking through that as well, but noticed that it says the offset vector is "A vector of length nobs," wh...

Awesome, thanks for the help! I don't think I came across it in any of these guides, but does anyone know the steps required to add a prior to the regression?

Does anyone have an alternative way to access Jacob Frankel's guide on Hickory High? The site appears to be down. On this same note, anyone know why the site isn't working?