[EM] Multiwinner Condorcet generalization on 1D politics

[Brian Olson]

On Feb 12, 2009, at 4:41 PM, Raph Frank wrote:

> (Found something that might be it:  http://saweis.net/svd/ )

Ah, that's the smart math way to do it with SVD.

> Anyway, the basic point is that you can place each member of a
> legislature on a 2-d plane based solely on their voting records and
> then use that to predict future votes.  You don't need to actually
> know what the votes are about.

Another play on it is what I did where I took the difference in voting  
record between any pair of senators to be a length and put all the  
pairings into a spring solver that tried to arrange the senators in a  
lowest energy configuration on a plane. That comes up with things like  
this:

http://bolson.org/gov/us/senate/2008/senate_current.svg

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