Paul Kislanko wrote: > Yes. The pairwise matrix plus this "how many voters ranked A at rank R" > could be combined to give more information. In fact, the pairwise > matrix can be derived as easily from the "how many voters ranked A at > rank R", but not vice-versa.
I don't believe that's true. The two ballot sets 3:A>B>C 2:B>C>A 2:C>A>B and 2:A>B>C 1:A>C>B 1:B>A>C 1:B>C>A 1:C>A>B 1:C>B>A result in different pairwise matrices (no Condorcet winner in the first, A is CW in the second), but they both have the same rank profile: A is first on 3 ballots, second on 2 ballots, third on 2 ballots B is first on 2 ballots, second on 3 ballots, third on 2 ballots C is first on 2 ballots, second on 2 ballots, third on 3 ballots -- Rob LeGrand, psephologist [EMAIL PROTECTED] Citizens for Approval Voting http://www.approvalvoting.org/ __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ---- election-methods mailing list - see http://electorama.com/em for list info
