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VincentYu comments on Help with a (potentially Bayesian) statistics / set theory problem? - Less Wrong Discussion

2 Post author: joshkaufman 10 November 2011 10:30PM

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Comment author: VincentYu 10 November 2011 11:48:34PM *  1 point [-]

If the aggregated preferences are transitive (i.e., 'not inconsistent' in your and Manfred's wording), then this preference relation defines a total order on the objects, and there is a unique object that is preferred to every other object (in aggregate). (Furthermore, this is isomorphic to the set {1,2,3,...,7} under the ≤ relation.)

Comment author: dlthomas 11 November 2011 12:46:06AM 0 points [-]

As I understand things, you have no guarantee of transitivity in the aggregated preferences even if you do have transitivity in the individual preferences.

Comment author: VincentYu 11 November 2011 12:55:41AM 0 points [-]

Yes, of course you are correct.

Comment author: joshkaufman 11 November 2011 12:00:01AM *  0 points [-]

Very helpful - reading about this now. Starting here: http://en.wikipedia.org/wiki/Ranking