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Unread 11-03-2009, 23:32
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Re: Easy to use Offensive Power Rankings (OPR) program for mid-regional scouting

Quote:
Originally Posted by SteveGPage View Post
I think that you are on to something, and I do think that the +/- calculation can and would be important. I've been struggling with the following equation, trying to figure out how to implement it and do the calculation, so let me know what you all think. It is similar to Boggle's concept above, and may be essentially the same result, but can't figure out how to parse the data to actually make it happen, especially since it creates a 2N x 2N matrix...

Two equations:
1. (Xioblue + Xjoblue + Xkoblue) - (Xldred + Xmdred + Xndred) = Scoreblue
2. (Xlored + Xmored + Xnored) - (Xidblue + Xjdblue + Xkdblue) = Scorered

Where ...
............X
..............io (Team i - OPR)
................blue (Alliance)

and likewise, id would represent Team i - DPR.
You would have to solve for both the OPR and DPR for each team.
OK, so either your idea is identical to Bongle's, or I misunderstood him, because what you explained above is exactly what I implemented. Bongle's been away from the topic for a while, hopefully he'll see this and let us know if that's what he meant.
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