[EM] Request for Multiwinner Methods

[Fernand G.]

What about Schulze STV? Here's the link:

http://home.versanet.de/~chris1-schulze/schulze2.pdf

On Sun, Oct 12, 2008 at 10:59 PM, Greg Nisbet <gregory.nisbet at gmail.com> wrote:
> For the Intel Science Talent Search, Warren Smith and I are working on a
> system to measure how representative the groups created by various
> multiwinner electoral methods are. This shall be done by having the public
> have opinions of various binary social issues and the candidates will have
> stance on these. Then the group of winners will get together and vote (using
> the only reasonable voting method with two options) and this will be the
> basis for seeing how well the winners have "emulated" society.
>
> Several things to note,
> a) This represents a departure from the tradition concept of utility
> somewhat. The candidates themselves won't have utility (they may have
> something resembling it, but that comes much MUCH later) instead the net
> opinions of parliament will.
> b) In order to simulate strategic voting, either the Vote By Result system I
> described earlier will be used or one based on assigning "victory
> probabilities" to candidates in a massive feedback loop that will eventually
> approach equilibrium. More on this later
>
> Anyway, onto the main point.
>
> If you have a multiwinner method of some sort, that would be great.
> Party-related methods are great, but as we aren't exactly sure how to
> emulate parties yet.. they are less useful now than they would be, say in a
> month, that's no reason not to suggest a nice party method, but just sort of
> keep that in mind.
>
> Both ranked and rated ballot methods are appreciated. If you have some
> variation of an existing method that is great too.
>
> Single winner methods are also appreciated. We are going to attempt
> districted single winner methods as well for the purposes of this thing. The
> number of single winner methods tested won't be quite as generous as the
> other Bayesian regret tests, but whatever.
>
> The current multiwinner methods I can think of off the top of my head are:
> CPO-STV
> STV with various transfer rules (I don't anticipate TOO great a difference
> here)
> RRV
> PAV (proportional approval voting)
> PRV (  "         "      range    "    " )
> SNTV
> MMP
> Cumulative Voting
> Sainte-Lague
> Largest Rem
> D'Hondt
> Limited Vote
> Block Vote
> Sortition (Random Winner)
>
> And, a special place of (dis)honor is reserved for distrticted FPTP. It is
> the norm for Anglophone countries and a cause of political misery the world
> over.
>
> I know many of those methods listed are crappy, but I say some kind of
> yardstick is called for.
>
> Oh yeah, if your method is sufficiently obscure, please maybe give a brief
> description of how it works or a hyperlink to one.
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