Next, for each candidate X in the union of (the members of) F, let A(X) be the average of all these ballot vectors that rank X in first place..
Next, for each ballot vector V and each candidate X in the union of F, let d(V,A(X)) be the distance from V to A(X) in the Euclidean metric (i.e. the root of the sum of squares of the respective component differences).
What about the candidates that have no first preference votes?
Olli Salmi ---- Election-methods mailing list - see http://electorama.com/em for list info
