[EM] Ranked Pairs vs. SSD vs. Plain Condorcet

[Rob LeGrand]

Adam,

Regarding Ranked Pairs, SSD and Plain Condorcet, yes, they're all different,
even disregarding the margins vs. winning-votes issue.  Please try the election

 98:Abby>Cora>Erin>Dave>Brad
 64:Brad>Abby>Erin>Cora>Dave
 12:Brad>Abby>Erin>Dave>Cora
 98:Brad>Erin>Abby>Cora>Dave
 13:Brad>Erin>Abby>Dave>Cora
125:Brad>Erin>Dave>Abby>Cora
124:Cora>Abby>Erin>Dave>Brad
 76:Cora>Erin>Abby>Dave>Brad
 21:Dave>Abby>Brad>Erin>Cora
 30:Dave>Brad>Abby>Erin>Cora
 98:Dave>Brad>Erin>Cora>Abby
139:Dave>Cora>Abby>Brad>Erin
 23:Dave>Cora>Brad>Abby>Erin

that I have listed at http://www.onr.com/user/honky98/rbvote/calc.html .  Paste
the input into the text area and then try Simpson (Plain Condorcet) and Schulze
(SSD).  (The Ranked Pairs implementation isn't entirely finished yet.)  The
output will explain how each method computes the winner.  There are no equal
rankings in the above votes, so the margins vs. winning-votes question is moot.
 Plain Condorcet picks Cora as the winner (who is *not* in the Smith set), SSD
picks Abby, and Ranked Pairs picks Brad.  Play around with changing the votes
and see how the pairwise matrix and the winners change.

=====
Rob LeGrand
honky98 at aggies.org
http://www.aggies.org/honky98/

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