Re: [EM] Condorcet question - why not bullet vote

2010-06-18 Thread robert bristow-johnson
gone for a day. this is only two days old but it looks like it sat around a lot longer. On Jun 16, 2010, at 2:57 PM, Jameson Quinn wrote: ... there could be an honest CW, and bullet voting creates an artificial cycle. ... Anyway, you cannot give simple guarantees like the one you

Re: [EM] Condorcet question - why not bullet vote

2010-06-18 Thread Kristofer Munsterhjelm
robert bristow-johnson wrote: but if cycles are *not* involved (at all, going into a cycle from a sincere CW or coming out of one), i would be interested in you showing us how a strategy, such as Bullet Voting, can change the CW from someone you didn't support to someone you do support. To

Re: [EM] Condorcet question - why not bullet vote

2010-06-17 Thread Peter Zbornik
Hi, Kevin, thanks for the comment. Well, it is true, that Schulze writes in http://m-schulze.webhop.net/schulze1.pdf, page 154, that There has been some debate about how to define D [Schulze ranking relation] when it is presumed that on the one side each voter has a sincere linear ordering of

Re: [EM] Condorcet question - why not bullet vote

2010-06-17 Thread Peter Zbornik
On Thu, Jun 17, 2010 at 1:06 AM, Juho Laatu juho.la...@gmail.com wrote: On Jun 16, 2010, at 11:49 PM, Peter Zbornik wrote: Juho, we have the example 49: A 48: BC 3: CB you wrote to me: - C loses to B, 3-48. In winning votes the strength of this loss is 48. - B loses to A, 48-49. In

Re: [EM] Condorcet question - why not bullet vote

2010-06-17 Thread Peter Zbornik
Hi, a fourth method of measuring the strength of pairwise wins in Condorcet would be a statistical test called Binomial test. See: http://faculty.chass.ncsu.edu/garson/PA765/binomial.htm Excel calculations at: http://udel.edu/~mcdonald/statexactbin.html Short explanation: Each vote for candidate

[EM] Condorcet question - why not bullet vote

2010-06-16 Thread Peter Zbornik
Dear all, dear Markus Schulze, I got a second question from one of our members (actually the same guy which asked for the first time): If I just bullet vote in a Condorcet election, then I increase the chances of my candidate being elected. If I have a second or third option, the chances of my

Re: [EM] Condorcet question - why not bullet vote

2010-06-16 Thread robert bristow-johnson
On Jun 16, 2010, at 1:30 PM, Peter Zbornik wrote: Dear all, dear Markus Schulze, I got a second question from one of our members (actually the same guy which asked for the first time): If I just bullet vote in a Condorcet election, then I increase the chances of my candidate being

Re: [EM] Condorcet question - why not bullet vote

2010-06-16 Thread Kevin Venzke
Hi Peter, My quick responses to this: --- En date de : Mer 16.6.10, Peter Zbornik pzbor...@gmail.com a écrit : I got a second question from one of our members (actually the same guy which asked for the first time): If I just bullet vote in a Condorcet election, then I increase the chances of

Re: [EM] Condorcet question - why not bullet vote

2010-06-16 Thread Peter Zbornik
Hi Kristofer, thanks for a detailed answer. As you answer contingency, it might be beneficial to turn the question around. In what situations will bullet voting help my candidate to win (considering the advanced Condorcet systems)? Peter On Wed, Jun 16, 2010 at 8:14 PM, Kristofer Munsterhjelm

Re: [EM] Condorcet question - why not bullet vote

2010-06-16 Thread Jameson Quinn
2010/6/16 robert bristow-johnson r...@audioimagination.com On Jun 16, 2010, at 1:30 PM, Peter Zbornik wrote: Dear all, dear Markus Schulze, I got a second question from one of our members (actually the same guy which asked for the first time): If I just bullet vote in a Condorcet

Re: [EM] Condorcet question - why not bullet vote

2010-06-16 Thread Kevin Venzke
Hi Peter, --- En date de : Mer 16.6.10, Peter Zbornik pzbor...@gmail.com a écrit : In what situations will bullet voting help my candidate to win (considering the advanced Condorcet systems)? The simplest is probably the one you gave. For example: 43 A 27 B vs. BC 30 CB If B voters don't give

Re: [EM] Condorcet question - why not bullet vote

2010-06-16 Thread Juho
Some more viewpoints that were not covered very well yet. 1) Typical (=all common) Condorcet methods make pairwise comparisons and derive the results from those comparisons. Changing one's vote from ABC to AB=C does not change the pairwise comparison results of ones favourite (A) against

[EM] Condorcet question - why not bullet vote?

2010-06-16 Thread Chris Benham
Peter, If I just bullet vote in a Condorcet election, then I increase the chances of my candidate being elected. Bullet voting in an election using a method that complies with the Condorcet criterion does I suppose somewhat increase the chance of your candidate being the Condorcet winner. But

Re: [EM] Condorcet question - why not bullet vote?

2010-06-16 Thread Peter Zbornik
Chris, thanks for pointing these things out. I didn't know about the Later-no-Help. You write: But all Condorcet methods fail Later-no-Help, and in some this effect is sufficiently strong for the method to have a random fill incentive. Do you know for which Condorcet methods this effect is

Re: [EM] Condorcet question - why not bullet vote

2010-06-16 Thread Peter Zbornik
Juho, we have the example 49: A 48: BC 3: CB you wrote to me: - C loses to B, 3-48. In winning votes the strength of this loss is 48. - B loses to A, 48-49. In winning votes the strength of this loss is 49. - A loses to C, 49-51. In winning votes the strength of this loss is 51. Thus: If the

Re: [EM] Condorcet question - why not bullet vote

2010-06-16 Thread Kevin Venzke
Hi Peter, --- En date de : Mer 16.6.10, Peter Zbornik pzbor...@gmail.com a écrit : Thus: If the three C voters will truncate then they will win instead of B in winning votes based Condorcet methods. This is correct, if proportional completion is not used (see page 42 in 

Re: [EM] Condorcet question - why not bullet vote

2010-06-16 Thread Juho Laatu
On Jun 16, 2010, at 11:49 PM, Peter Zbornik wrote: Juho, we have the example 49: A 48: BC 3: CB you wrote to me: - C loses to B, 3-48. In winning votes the strength of this loss is 48. - B loses to A, 48-49. In winning votes the strength of this loss is 49. - A loses to C, 49-51. In

Re: [EM] Condorcet question - why not bullet vote

2010-06-16 Thread Juho
On Jun 17, 2010, at 12:29 AM, Kevin Venzke wrote: Hi Peter, --- En date de : Mer 16.6.10, Peter Zbornik pzbor...@gmail.com a écrit : Thus: If the three C voters will truncate then they will win instead of B in winning votes based Condorcet methods. This is correct, if proportional

Re: [EM] Condorcet question - why not bullet vote

2010-06-16 Thread Kevin Venzke
Hi Juho, --- En date de : Mer 16.6.10, Juho juho.la...@gmail.com a écrit : If you are using proportional completion (or symmetric completion) then you're not using winning votes, you're using margins. The described algorithm seemed to make the completion in a non-symmetric way, leading