[EM] Median bifurcation using pairwise matrix

Blake Cretney bcretney at postmark.net
Tue Aug 14 17:49:24 PDT 2001


On Mon, 13 Aug 2001 16:35:04 -0700 (PDT)
Rob LeGrand <honky1998 at yahoo.com> wrote:

> FYI, I believe this procedure will give the same results as the
procedure
> called Nanson in Vandercruyssen's paper "Analysis of voting
procedures in
> one-seat elections: Condorcet efficiency and Borda efficiency".  The
paper also
> describes the procedure that Blake's site calls Nanson, but calls it
Baldwin. 
> See the paper at
> 
>
http://www.econ.kuleuven.ac.be/ew/admin/Publications/DPS99/DPS9911.pdf

According to that paper, Nanson invented both.  I gather the later one
was invented with Baldwin.

I've now added what the paper calls Nanson to my web site, under the
name of Nanson (original).  It passes Smith and reversal symmetry, but
fails independence of clones and monotonicity.

In an attempt to reduce confusion, I've renamed the Nanson-Baldwin
method, which I used to call Nanson, to Borda-Elimination on my site. 
I give Baldwin as another possible name, though.

-------------
Blake Cretney

See my Election Method Resource
http://www.fortunecity.com/meltingpot/harrow/124/



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