[EM] RE : D2MAC can be much more efficient than Range Voting (corrected)

[Kevin Venzke]

Hi,

--- Warren Smith <wds at math.temple.edu> a écrit :
> > Recall that in D2MAC you specify a favourite and as many "also
> approved"
> > options as you want. Then two ballots are drawn and the winner is the
> > most approved option amoung those that are approved on both ballots
> > (if such an option exists), or else the favourite option of the first
> > ballot.
> > 
> > If voters are sincere, the result will be this:
> >   55%: favourite A, also approved C
> >   45%: favourite B, also approved C
> > Winner: C
> 
> And you answered: 
> > --WDS correction: actually, it appears to me that the winner is
> > A with probability 30.25%
> > B with probability 20.25%
> > C with probability 49.50%
> > with social average utility = 7.03
> 
> >Heitzig: 
> That's definitely wrong: No matter what two ballots are drawn, both
> approve of C
> and C is the most approved option. Hence C is elected with certainty.
> 
> --WDS: Huh?
> So suppose both ballots are "favorite A, also approved C."
> 
> Are you claiming C wins with certainty???
> 
> -wds

That's quite obvious from the definition isn't it?

Kevin Venzke


	

	
		
___________________________________________________________________________ 
Découvrez une nouvelle façon d'obtenir des réponses à toutes vos questions ! 
Profitez des connaissances, des opinions et des expériences des internautes sur Yahoo! Questions/Réponses 
http://fr.answers.yahoo.com