Re: [EM] Spoiler Effect on Wikipedia

2004-11-12 Thread Eric Gorr
Dear Eric, you wrote (12 Nov 2004): I would suggest the one proposed by Dr. Tideman which I believe can be found here: http://condorcet.org/emr/criteria.shtml I don't see that Blake Cretney uses the resolute model. Well, use the one that Dr. Tideman proposes. I would assume that it would fall in

[EM] virtual round robin slideshow

2004-11-12 Thread James Green-Armytage
Interesting approach, Brian. I like the "brand" name VRR, it's kind of neat if you want to go with the whole acronym thing. Have you tried this out on anyone yet? What was their response? What I've been doing lately to explain the pairwise method is to have people rank 5 mo

Re: [EM] Spoiler Effect on Wikipedia

2004-11-12 Thread Markus Schulze
Dear Eric, you wrote (12 Nov 2004): > I would suggest the one proposed by Dr. Tideman which I believe can > be found here: > > http://condorcet.org/emr/criteria.shtml I don't see that Blake Cretney uses the resolute model. The resolute model says that for every possible set of ballots a candidat

Re: [EM] Spoiler Effect on Wikipedia

2004-11-12 Thread Eric Gorr
At 12:25 AM +0100 11/13/04, Markus Schulze wrote: Dear Eric Gorr, you wrote (13 Nov 2004): I am not talking about the IIA variant that you prefer, but Dr. Arrow's variant (which does not involve probabilities - unless I am mistaken), so my question to you stands. So when you want to use the reso

Re: [EM] Spoiler Effect on Wikipedia

2004-11-12 Thread Markus Schulze
Dear Eric Gorr, you wrote (13 Nov 2004): > I am not talking about the IIA variant that you prefer, but Dr. > Arrow's variant (which does not involve probabilities - unless > I am mistaken), so my question to you stands. So when you want to use the resolute model for IIA, then of course you also h

Re: [EM] Spoiler Effect on Wikipedia

2004-11-12 Thread Eric Gorr
Hallo, So would passing the strong version of IIA (and by strong version, I assume we are speaking about the one Dr. Arrow used) imply passing ICC? As I said: Random Candidate, David Catchpole's Random Candidate, and Random Pairs satisfy IIA and violate ICC. I am not talking about the IIA varian

Re: [EM] Spoiler Effect on Wikipedia

2004-11-12 Thread Markus Schulze
Hallo, > So would passing the strong version of IIA (and by strong version, I > assume we are speaking about the one Dr. Arrow used) imply passing > ICC? As I said: Random Candidate, David Catchpole's Random Candidate, and Random Pairs satisfy IIA and violate ICC. Markus Schulze Election-

Re: [EM] IRV in San Francisco

2004-11-12 Thread Eric Gorr
At 1:47 PM -0500 11/12/04, Dave Ketchum wrote: On Fri, 12 Nov 2004 13:06:23 -0500 Eric Gorr wrote: At 7:44 AM -0800 11/12/04, Justin Sampson wrote: On Fri, 12 Nov 2004, Eric Gorr wrote: > Well, it will cause IRV to fail the Independence of Clones Criterion and thereby be subject to a spoiler effe

Re: [EM] IRV in San Francisco

2004-11-12 Thread Dave Ketchum
On Fri, 12 Nov 2004 13:06:23 -0500 Eric Gorr wrote: At 7:44 AM -0800 11/12/04, Justin Sampson wrote: On Fri, 12 Nov 2004, Eric Gorr wrote: > Well, it will cause IRV to fail the Independence of Clones Criterion and thereby be subject to a spoiler effect again. Doesn't IRV suffer from spoiler ef

Re: [EM] IRV in San Francisco

2004-11-12 Thread Eric Gorr
At 7:44 AM -0800 11/12/04, Justin Sampson wrote: On Fri, 12 Nov 2004, Eric Gorr wrote: > Well, it will cause IRV to fail the Independence of Clones Criterion and thereby be subject to a spoiler effect again. Doesn't IRV suffer from spoiler effects anyway? Depends. The method itself passes the ICC

Re: [EM] IRV in San Francisco

2004-11-12 Thread Dave Ketchum
On Thu, 11 Nov 2004 20:12:36 -0800 (PST) Justin Sampson wrote: On Thu, 11 Nov 2004, Brian Olson wrote: Between this story and all of the snafu going on with the DRE voting machines, my appraisal of the quality of software engineering in this country is going down. Even Microsoft could do better. A

Re: [EM] IRV in San Francisco

2004-11-12 Thread Justin Sampson
On Fri, 12 Nov 2004, Eric Gorr wrote: > At 10:11 AM -0500 11/12/04, Warren Schudy wrote: > > > 1) Did the ballot only allow each voter to give the top three choices? > > I suspect that restriction would significantly decrease the > > effectiveness of IRV. Yes, three choices. The City Charter sa

[EM] For Election Equipment - Providing for Testing

2004-11-12 Thread Dave Ketchum
On Fri, 12 Nov 2004 10:11:03 -0500 (EST) Warren Schudy wrote: Subject: Re: [EM] IRV in San Francisco 1) Did the ballot only allow each voter to give the top three choices? I suspect that restriction would significantly decrease the effectiveness of IRV. Agreed a decrease, but I question its bei

Re: [EM] IRV in San Francisco

2004-11-12 Thread Eric Gorr
At 10:11 AM -0500 11/12/04, Warren Schudy wrote: 1) Did the ballot only allow each voter to give the top three choices? I suspect that restriction would significantly decrease the effectiveness of IRV. Well, it will cause IRV to fail the Independence of Clones Criterion and thereby be subject to a

Re: [EM] Spoiler Effect on Wikipedia

2004-11-12 Thread Eric Gorr
Hallo, I'm responsible for the edits to that page that make that claim, but if it's wrong please do fix it. Markus S - I'm very surprised that IIA does not imply ICC, could you give an example? I mean the strong version of IIA. I prefer the following definition for IIA So would passing the st

Re: [EM] IRV in San Francisco

2004-11-12 Thread Warren Schudy
1) Did the ballot only allow each voter to give the top three choices? I suspect that restriction would significantly decrease the effectiveness of IRV. 2) I suspect the root cause of the crappy election software used is gullible non-technical election clerks making purchasing decisions. As a s