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Unread 26-04-2015, 21:36
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AKA: Gus Michel II
FRC #3946 (Tiger Robotics)
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Re: Recycle Rush Farewell

Quote:
Originally Posted by Caleb Sykes View Post
I agree that DPR and CCWM are nearly meaningless this year, but I am curious to know what has led you to believe that OPR is such a horrible metric for this game.
DPR can be meaningless in three ways. First, every team can get the same number (with a bit of noise, of course). Then, it's meaningless, but that would not invalidate OPR. Second, if DPR is systematically incorrect, I have confidence that OPR shall also be systematically incorrect as well. FInally, if DPR has such wild scatter as to appear to mean something, I have confidence that OPR shall be wildly inaccurate as well.

Non-linearity and limited game pieces inherently confuse linear models. For example:
  • Q. How many offensive points is a can burglar (by itself) going to be worth?
  • A. If the alliance can't build more than three decent stacks, nothing. If the alliance can build and cap seven tall stacks, perhaps 100 points.
  • Q. How many offensive points are making inverted totes and totes on the step scorable?
  • A. If the alliance is not starved for totes, nothing. If totes become the limiting factor, up to 44.
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