[EM] Classifying 3-cand scenarios. LNHarm methods again.

[Chris Benham]

Dave Ketchum wrote 17 April 2010:

"First, quoting Wikipedia:
> A Condorcet method is any single-winner election method that meets  
> the Condorcet criterion, that is, which always selects the Condorcet  
> winner, the candidate who would beat each of the other candidates in  
> a run-off election, if such a candidate exists. In modern examples,  
> voters rank candidates in order of preference. There are then  
> multiple, slightly differing methods for calculating the winner, due  
> to the need to resolve circular ambiguities—including the Kemeny- 
> Young method,Ranked Pairs, and the Schulze method. Almost all of  
> these methods give the same result if there are fewer than 4  
> candidates in the circularly-ambiguous Smith set and voters  
> separately rank all of them.


I have heard this complaint before, so am listening for help.

WHAT should I say when I want EXACTLY what is described as "Condorcet"  
above?"
 
Dave,
The Wikiipedia piece you quote doesn't say *the* Condorcet method. It
says "A Condorcet method..".

So you couuld say that, or "a Condorcet-complying method". 
You asked "Will not Condorcet attend to clones with minimum pain?"
Plain "Condorcet" won't do anything except elect a voted CW if
there is one.
Some Condorcet-complying methods are clone-proof and some aren't.
Chris Benham


 
On Apr 17, 2010, at 9:25 PM, Markus Schulze wrote:
> Hallo,
>
> Dave Ketchum wrote (18 April 2010):
>
>> Why IRV? Have we not buried that deep enough?
>> Why not Condorcet which does better with about
>> the same voting?
>>
>> Why TTR?  Shouldn't that be avoided if trying
>> for a good method? TTR requires smart deciding
>> as to which candidates to vote on.
>>
>> Will not Condorcet attend to clones with minimum
>> pain? Voters can rank them together (with equal
>> or adjacent ranks).
>>
>> Does not Condorcet properly attend to "symmetric"
>> with a voted cycle?
>
> In my opinion, "Condorcet" refers to a criterion
> rather than to an election method.
>
> Markus Schulze