[EM] [RangeVoting] IRV vs Condorcet vs Range/Score

[Terry Bouricius]

Dave,

You are using the term "Condorcet" in a way that is increasingly common, 
but confusing to election method theorists, to mean a ranked voting method 
that is easiest to explain by imagining a series of one-on-one comparisons 
using a ranked ballot. What Chris B. was getting at is that Condorcet is a 
CRITERION (in fact there is also a Condorcet-loser criterion, which I 
think is more useful), which is used in evaluating voting methods, rather 
than an actual voting method itself. There are probably a dozen different 
voting methods that are Condorcet compliant, and many others that aren't 
(complying with other criteria that some believe are more crucial). The 
issue separating the various Condorcet methods is how you find a winner 
when there is no Condorcet winner.

Terry Bouricius

----- Original Message ----- 
From: "Dave Ketchum" <davek at clarityconnect.com>
To: <RangeVoting at yahoogroups.com>
Cc: <davek at clarrityconnect.com>; "EM" 
<election-methods at lists.electorama.com>
Sent: Friday, October 10, 2008 1:02 PM
Subject: Re: [EM] [RangeVoting] IRV vs Condorcet vs Range/Score


Took a while to decipher what you meant.

Others seem to realize my topic is Condorcet vs IRV, both almost twin rank
methods.

While I do have preferences among methods, this thread is into those two
without considering what else I might prefer.

DWK

On Thu, 9 Oct 2008 21:59:11 -0700 (PDT) Chris Benham wrote:
> Dave Ketchum wrote:
> I started this thread to compare IRV vs Condorcet, believing that IRV is
> provably less capable and deserves discarding.
>
> Dave,
> Comparing a decisive method  with a criterion is a bit like comparing a
> person with  "virtue".  As soon as you tell us which  *decisive method*
> you support  I will be happy to discuss its comparison with IRV.
>
> Or failing that, perhaps you could give us some clue as to what method
> you support by telling us some other criteria besides the Condorcet 
> Criterion
> that you think a method should meet.
>
> Chris Benham
-- 
  davek at clarityconnect.com    people.clarityconnect.com/webpages3/davek
  Dave Ketchum   108 Halstead Ave, Owego, NY  13827-1708   607-687-5026
            Do to no one what you would not want done to you.
                  If you want peace, work for justice.



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