Search found 11 matches

by j_oxford
Tue Aug 11, 2015 6:24 pm
Forum: APBRmetrics
Topic: Adjusted Impact Rating- Top down metric, just noticed
Replies: 22
Views: 17549

Re: Adjusted Impact Rating- Top down metric, just noticed

Superstar calls? When was the first modern era salary cap? 84-85. 89-90 big jump to over 10 mil. 74-90, more player partying and / or saving it for the playoffs? Bigger & bigger bucks coaxing more of the talent edge out of players hungry for the rapidly expanding available dollars? More emphasi...
by j_oxford
Mon Aug 10, 2015 7:55 pm
Forum: APBRmetrics
Topic: Adjusted Impact Rating- Top down metric, just noticed
Replies: 22
Views: 17549

Re: Adjusted Impact Rating- Top down metric, just noticed

Although I find it interesting that the equation is different depending on the era. I ran a regression from 76-83 and the .03 x coefficient actually gets bumped from .0305 in current era to .035 (.04) for late 70's - early 80's. This prompted me to look at the standard deviation for both sets of dat...
by j_oxford
Mon Aug 10, 2015 3:08 pm
Forum: APBRmetrics
Topic: Adjusted Impact Rating- Top down metric, just noticed
Replies: 22
Views: 17549

Re: Adjusted Impact Rating- Top down metric, just noticed

Realized I never posted this formula for win% online: Win% = .5 +.03(FFR) where FFR = .004+1.47(eFG%-LG.eFG%)+1.52(LG.TOV%-TOV%)+.43(OREB%-LG.OREB%)+.32(FT/FGA-LG.FT/FGA)+1.42(LG.eFG%-O.eFG%)+1.4(O.TOV%-LGTOV%)+.44(DREB%-LG.DREB%)+.3(LG.FT/FGA%-O.FT/FGA) The linear regression I ran has FFR as an inp...
by j_oxford
Thu Aug 06, 2015 8:15 pm
Forum: APBRmetrics
Topic: Adjusted Impact Rating- Top down metric, just noticed
Replies: 22
Views: 17549

Re: Adjusted Impact Rating- Top down metric, just noticed

Carmelo only playing half the season helped his AIR.
by j_oxford
Thu Aug 06, 2015 7:53 pm
Forum: APBRmetrics
Topic: Adjusted Impact Rating- Top down metric, just noticed
Replies: 22
Views: 17549

Re: Adjusted Impact Rating- Top down metric, just noticed

Cavs played like a +10 team pretty much the whole time Mozgov was there. Kyrie and Love played a ton of minutes at the beginning of the season (Lebron as well, but he at least got a little break in there, which means his rating wasn't as deflated as Irving/Love by the beginning of the season), which...
by j_oxford
Thu Aug 06, 2015 7:30 pm
Forum: APBRmetrics
Topic: Adjusted Impact Rating- Top down metric, just noticed
Replies: 22
Views: 17549

Re: Adjusted Impact Rating- Top down metric, just noticed

As for MCW, I'd say the fit was the biggest part that helped him. Can't see him making that drastic of an improvement himself midway through the season. Teammates are certainly part of it, but the team played really well with him on the court, and he isn't the only one who got to play with those tea...
by j_oxford
Thu Aug 06, 2015 7:28 pm
Forum: APBRmetrics
Topic: Adjusted Impact Rating- Top down metric, just noticed
Replies: 22
Views: 17549

Re: Adjusted Impact Rating- Top down metric, just noticed

The Y-input in the Impact Rating regression is Net on-court RTG (ORTG-DRTG), so it is designed to mirror it. The Impact Rating equation is a line of best fit describing Net on RTG given the 6 variables. It's possible I need to adjust the weighting on the teammate adjustment a little bit, but through...
by j_oxford
Thu Aug 06, 2015 4:19 am
Forum: APBRmetrics
Topic: Adjusted Impact Rating- Top down metric, just noticed
Replies: 22
Views: 17549

Re: Adjusted Impact Rating- Top down metric, just noticed

Have you tried using AIR for lineup construction in your NBA analysis or coaching venture? Do you think AIR has advantages and / or disadvantages for this use compared to RPM? Would you consider trying AIR splits for different lineups or lineup "types" or by presumed position played? Is A...
by j_oxford
Thu Aug 06, 2015 3:24 am
Forum: APBRmetrics
Topic: Adjusted Impact Rating- Top down metric, just noticed
Replies: 22
Views: 17549

Re: Top down metric, just noticed

Some further probing on ts% issue might be useful / important. fyi, if interested in bb history, also check out http://www.apbr.org/forum/ I expected a gap in Rebounding %, but the opposite way. I had no prior assumptions about whether offense or defense would be more important for TOV% and TS%, bu...
by j_oxford
Thu Aug 06, 2015 3:07 am
Forum: APBRmetrics
Topic: Adjusted Impact Rating- Top down metric, just noticed
Replies: 22
Views: 17549

Re: Top down metric, just noticed

Glad your account got activated. Thanks to Daniel. My initial reaction is to somewhat agree with you that the metric is probably most helpful when used as a rating for a team's option over, perhaps a league rating. Any interest in checking the correlation of these values to raw plus minus, RPM and ...
by j_oxford
Wed Aug 05, 2015 11:38 pm
Forum: APBRmetrics
Topic: Adjusted Impact Rating- Top down metric, just noticed
Replies: 22
Views: 17549

Re: Top down metric, just noticed

Hello, I'm the creator of Adjusted Impact Rating. I'd be glad to answer any questions on it. I think it's strongest attribute is identifying role players (starting or off the bench) who do a great job of keeping the team playing at it's highest level. Thabo Sefolosha is my favorite example, primaril...