As far as I understand it, it's a bit of linear algebra. Every match played at an event is loaded into a matrix, and then an attempt is made to find the best solution (the number of points a team contributes to the match).
You can read more about it in this thread
http://www.chiefdelphi.com/forums/sh...threadid=75272
There's also a presentation by Dr. Ed Law on theredalliance.com, under scouting.
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