Re: [EM] question about Schulze example (A,B,M1,M2)

2011-10-31 Thread capologist
On Oct 31, 2011, at 8:16 AM, election-methods-requ...@lists.electorama.com wrote: > I entered your example into the (free) VoteFair-ranking service at > VoteFair.org and here is the results page: > > http://www.votefair.org/cgi-bin/votefairrank.cgi/votingid=10305-48109-09917 > > VoteFair popul

Re: [EM] question about Schulze example (A,B,M1,M2)

2011-10-30 Thread Richard Fobes
On 10/28/2011 2:21 PM, capologist wrote: > > ... > Not quite what I'm looking for. ... > ... > I'm looking for a deterministic method for generating a "picture" > (partial ordering) of how the voters, in aggregate, feel about the > preferability of the available options. (What we're doing at this

Re: [EM] question about Schulze example (A,B,M1,M2)

2011-10-30 Thread Kristofer Munsterhjelm
capologist wrote: I'm no expert in this field, but it is one I find interesting and visit from time to time. My first encounter with it was when I stumbled on a website advocating what was then called the Tideman method, before it was called Ranked Pairs and before the Schulze method was discover

Re: [EM] question about Schulze example (A,B,M1,M2)

2011-10-29 Thread capologist
On Oct 29, 2011, at 12:29 AM, Kristofer Munsterhjelm wrote: > you could (for instance) break them in Ranked Pairs order. > > A Ranked Pairs tiebreak is fully deterministic. Sort the victories in order > of magnitude, then if M1 > M2 comes before M2 > M1, set M1 above M2. It may > feel hackish t

Re: [EM] question about Schulze example (A,B,M1,M2)

2011-10-29 Thread Kristofer Munsterhjelm
capologist wrote: See section 5 of my paper: Not quite what I'm looking for. That section describes a non-deterministic method for generating a complete linear order. I don't require a linear order. I'm OK with a partial ordering. I'm looking for a deterministic method for generating a "pictu

Re: [EM] question about Schulze example (A,B,M1,M2)

2011-10-28 Thread Markus Schulze
Hallo, > Not quite what I'm looking for. That section describes > a non-deterministic method for generating a complete > linear order. Well, although this tie-breaking strategy is _formulated_ as a random tie-breaker, it is almost always decisive. Markus Schulze Election-Methods mailing l

Re: [EM] question about Schulze example (A,B,M1,M2)

2011-10-28 Thread Richard Fobes
FYI, the Condorcet-Kemeny method correctly ranks M1 as second-most popular, and M2 as third-most popular. And it does so without the need for a "tie-breaker" adjustment. Richard Fobes On 10/27/2011 8:46 PM, capologist wrote: I recently conducted a vote under the Schwartz method. It produced

Re: [EM] question about Schulze example (A,B,M1,M2)

2011-10-28 Thread capologist
> See section 5 of my paper: Not quite what I'm looking for. That section describes a non-deterministic method for generating a complete linear order. I don't require a linear order. I'm OK with a partial ordering. I'm looking for a deterministic method for generating a "picture" (partial ord

Re: [EM] question about Schulze example (A,B,M1,M2)

2011-10-28 Thread Markus Schulze
Hallo, as long as the used tie-breaking strategy guarantees that M1 is ranked ahead of M2, I see no problem. See section 5 of my paper: http://m-schulze.webhop.net/schulze1.pdf Markus Schulze Election-Methods mailing list - see http://electorama.com/em for list info

[EM] question about Schulze example (A,B,M1,M2)

2011-10-27 Thread capologist
I recently conducted a vote under the Schwartz method. It produced a result that is counterintuitive and that I don’t know how to justify.Here’s a simplified version of the scenario:   5x  A > M1 = M2 > B   3x  B > A > M1 = M2   2x  M1 = M2 > B > A   2x  M1 > M2 > B > AThe partial ordering produced