Dear Kevin! Does the CDTT have any other significance than the connection with Minimal Defense? In other words, what would you think of a method satisfying minimal defense but not CDTT?
Yours, Jobst Kevin Venzke <[EMAIL PROTECTED]> schrieb am 13.09.05 06:31:34: > > Rob, > > --- Rob Lanphier <[EMAIL PROTECTED]> a écrit : > > As Abd alluded to in at least one email, it's possible to have a revised > > version of Copeland that works differently. For example, it could be > > possible to not credit a candidate with a victory if they don't receive > > majority support (called "Copeland Majority" for purposes of this mail). > > We'll say one point for a win, no points for a loss, tie, or > > "draw" (where neither candidate gets a majority). > > > > It's something to think about. Myself, I'm not inclined to advocate > > Copeland Majority in absence of serious analysis, and I'm not inclined > > to work on that analysis at this time. I suspect it actually has some > > nice properties when combined with a good tiebreaker, but don't have > > anything provable to back up my hunch. > > I think if we go in this direction we'll arrive at the CDTT, which I discussed > a lot earlier this year, and which I prefer to Smith. > > A candidate is a CDTT winner if he has a majority-strength beatpath to > every candidate who has a majority-strength beatpath to him. > > In this scenario: > > 49 A > 24 B > 27 C>B > > The CDTT winners are B and C. > > Any method which elects from the CDTT (such as Schulze(wv)) already satisfies > minimal defense. The CDTT can be used with plurality, IRV, DSC, and MMPO and > satisfy three-candidate Later-no-harm. However, this fails the plurality > criterion: Any of those combination methods results in C winning in the above > scenario. > > Kevin Venzke > > > > > > > > ___________________________________________________________________________ > Appel audio GRATUIT partout dans le monde avec le nouveau Yahoo! Messenger > Téléchargez cette version sur http://fr.messenger.yahoo.com > ---- > Election-methods mailing list - see http://electorama.com/em for list info ______________________________________________________________ Verschicken Sie romantische, coole und witzige Bilder per SMS! Jetzt bei WEB.DE FreeMail: http://f.web.de/?mc=021193 ---- Election-methods mailing list - see http://electorama.com/em for list info
