Easy to use Offensive Power Rankings (OPR) program for mid-regional scouting

[Bongle]

Originally Posted by SteveGPage

One other thing, then I'll go back to my day job ... When I was talking to Kenneth Massey (the BCS guy) he also suggested something,

A good idea (it would certainly increase accuracy), but my goal (for my program, at least), is to try and provide the most accurate scouting-independent ranking possible using only match data.

As for implementation of OPR+/DPR+, how I arranged my matrix was:

Odd Rows (for row i): "Team i/2's total score is equal to the weighted sum of the team i/2's alliance OPRs minus the weighted sum of team i/2's opponents' DPRs"

• Constant: team i/2's total score
• Coefficients: Alternating
  • Odd columns (col j): # of times team i/2 played with team j/2 (positive)
  • Even columns (col j): # of times team i/2 played against team j/2 (negative)

Even Rows (for row i): "Team i's opponents' score is equal to the weighted sum of the opponents' alliance OPRs minus the weighted sum of team i's alliance's DPRs"

• Constant: team i/2's opponents' total score
• Coefficients: Alternating
  • Odd columns (col j): # of times team i/2 played against team j/2 (positive)
  • Even columns (col j): # of times team i/2 played with team j/2 (negative)

For verification, I'm pretty sure that the sum of the absolute values of each row should equal the number of matches that team played times 6.