[EM] non-deterministic methods
Forest Simmons
simmonfo at up.edu
Mon Dec 27 16:26:32 PST 2004
As Jobst recently pointed out, non-deterministic methods have not been
adequately studied or promoted, considereing their potential contribution
to fairness and to strategy free voting.
Consider, for example the following cycle of three:
34 ABC
33 BCA
33 CAB
Though most methods would give the win to A, it seems like B and C have
nearly as much claim as A.
What if we tossed two coins, and gave the win to B if they both came up
heads, to C if they both came up tails, and to A otherwise.
This would give A a fifty percent chance of winning, and divide the other
fifty percent equally between B and C.
Would this be fair?
Does it give too much probability to A ? or too little?
Some might say that A, B, and C should be more equal in probability, since
the faction sizes are nearly equal.
But the determinists would say that they should be even less equal: A
should get one hundred percent of the probability.
Who is right? And how should we assign the probabilities?
Forest
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