Re: [EM] Defensive strategy for Condorcet methods

2011-06-10 Thread Juho Laatu
On 10.6.2011, at 3.04, Kevin Venzke wrote: Hi Juho, --- En date de : Jeu 9.6.11, Juho Laatu juho4...@yahoo.co.uk a écrit : No, I wouldn't say that. I do think there are methods that offer two bad options and one of them is burial, though. (There is no working strategy, but there are

[EM] MRSODA (Mr. Soda), a SODA-inspired PR method (NP-complete???)

2011-06-10 Thread Jameson Quinn
SODA is essentially a procedure for turning a mixture of inter-candidate rankings, bullet votes, and approval ballots, into a set of approval ballots. So any PR system which accepts a set of approval ballots can then be applied, to turn it into a PR system. I'm not aware of many approval-based PR

Re: [EM] MRSODA (Mr. Soda), a SODA-inspired PR method (NP-complete???)

2011-06-10 Thread Andy Jennings
Jameson, On Fri, Jun 10, 2011 at 6:53 AM, Jameson Quinn jameson.qu...@gmail.comwrote: I'm not aware of many approval-based PR systems, though. Perhaps it's my own ignorance, but the only ones I know of are RAV and the two-ranked case of a complicated, unpublished Bucklin-based system I've

Re: [EM] MRSODA (Mr. Soda), a SODA-inspired PR method (NP-complete???)

2011-06-10 Thread Kristofer Munsterhjelm
Jameson Quinn wrote: SODA is essentially a procedure for turning a mixture of inter-candidate rankings, bullet votes, and approval ballots, into a set of approval ballots. So any PR system which accepts a set of approval ballots can then be applied, to turn it into a PR system. I'm not aware

Re: [EM] MRSODA (Mr. Soda), a SODA-inspired PR method (NP-complete???)

2011-06-10 Thread Jameson Quinn
Thank you to Kristofer and Andy for the references. As they and I'm sure many others have realized, my example was wrong. I'm still interested in how strategy would work when combining SODA with a multiwinner approval-balloted method. JQ 2011/6/10 Kristofer Munsterhjelm km_el...@lavabit.com

[EM] Theoretical Issues In Districting

2011-06-10 Thread Warren Smith
A preliminary web page on this topic is now available here http://rangevoting.org/TheorDistrict.html Your comments would be appreciated to help me improve this page. [There is a much longer scientific paper in the works by me others on this, but it unfortunately has been in the works several

[EM] MRSODA (Mr. Soda), a SODA-inspired PR method (NP-complete???)

2011-06-10 Thread fsimmons
I second the idea. Any PR method based on approval ballots could be implemented in this way. The main advantage of Range or Approval based methods for PR when compared to STV is shown in the following two winner example: 30 A(100)X(90) 20 B(100)X(90) 30 C(100)Y(90) 20 D(100)Y(90) with

[EM] C//A (was: Remember Toby)

2011-06-10 Thread Juho Laatu
On 9.6.2011, at 4.54, Kevin Venzke wrote: Hi Juho, --- En date de : Mer 8.6.11, Juho Laatu juho.la...@gmail.com a écrit : I was busy with other activities for a while but here are some comments. --- En date de : Mer 1.6.11, Juho Laatu juho4...@yahoo.co.uk a écrit : I agree with Kevin

Re: [EM] Remember Toby

2011-06-10 Thread Juho Laatu
On 9.6.2011, at 5.48, Jameson Quinn wrote: It seems I have to give one more example to cover also cases where the difference between major an minor candidates is not that clear. 26: AB 25: BA 49: C Again, if two of the B supporters vote BC, then B wins. If some A and B