APBRmetrics

Crow wrote:It depends who you are writing for. If it is general public, pick 3-5 important game details that matter most or are the best / worst compared to average. If it is a team you may still want to give priority attention to 3-5 things; but if they are serious, hopefully they will read and consider a review of everything. See http://www.hoopsstats.com/basketball/fa ... 18/21/1-29
for an example of a team level review. Also note they have position level matchup data.

See some of the more analytic media game previews. Decide on your own level of depth, hopefully with some audience feedback.

I don't recall seeing an article about how to write an article that analyzes a team or opponent. That could be a good article.

Crow wrote:You could join cleaningtheglass.com and ask Ben Falk.

I sent 7 tweets to some analytic folks asking if they have suggestions. Maybe you'll get lucky. With a note in this thread or via private message.

Crow wrote:It isn't common that insiders reveal what they actually do. But, you can ask.

Mostly you have to figure it out yourself. What do you think is important? Why? What are the possibilities? How do you measure importance?

It might be that you could get more feedback on your own report than information about what they do. Or go to several people with just one or two specific questions each.

You said you want to write to a team but here is one ok example of a media preview with some stats https://www.blazersedge.com/2017/12/16/ ... te-hornets
If you want more examples go to 10-20 SBNation, fansided or independent blogs and poke around. Look at what Derek Bodner does. https://mobile.twitter.com/DerekBodnerN ... r%5Eauthor

Rd11490 wrote:Could someone explain the differences in calculation for ORAPM, DRAPM and RAPM.I understand how RAPM is calculated and I know there are tons of resources here and elsewhere for it, but I can't find anyone on what adjustments need to be made to calculate the separate parts.

Crow wrote:Also read the posts at zigzaganalytics.com. Investigate for clues as you are able.

shadow wrote:

Rd11490 wrote:Could someone explain the differences in calculation for ORAPM, DRAPM and RAPM.I understand how RAPM is calculated and I know there are tons of resources here and elsewhere for it, but I can't find anyone on what adjustments need to be made to calculate the separate parts.

It's explained here:

viewtopic.php?f=2&t=9193&p=29935#p29029

You create two variables per player and use the offensive rating of each team as the response variable, instead of the efficiency margin like you do when only solving for RAPM.

The metric as described produces a rough measure of net points contributed per 100 possessions, but in order to turn the metric into something like the plus-minus derivative that it is, you need to subtract out league average performance. Thus far this year, league average performance has been roughly 4.9 points per 36 minutes played or .136 points per minute[11. This doesn’t account for pace differences between teams, but the aim here is relative simplicity.]. This makes sense. If you look at the regression I ran, -6.8 is the intercept on those per 100 possession stats. This means that 6.8 is the league average value produced per 100 possessions. Converting that to 96 possessions[12.because league average pace has been roughly 96 possessions per 48 minutes this season], you get 6.5 and if you divide that by the 48 minutes those 96 possessions occur in, you get that same .136 per minute value. So league average value per possession seems to be pretty consistent over time.

Crow wrote:Perhaps Kevin the RPM creator will stop by (eventually) and respond. Or you can try to go to him at @nbacouchside. There might not be much more to say than what he already said.