[EM] Re: Simpson-Kramer definition
    MIKE OSSIPOFF 
    nkklrp at hotmail.com
       
    Wed Apr 13 21:00:31 PDT 2005
    
    
  
Paul--
I'd said:
"The winner is the candidate whose greatest vote against him/her in a
pairwise comparison (defeat or victory) is the least."
You say:
If there's anything that's going to keep an improvement in election methods
from being accepted by the people who have to vote for a change it is
language like this.
I reply:
I've got news for you: I'm not proposing Simpson-Kramer to the public. In 
fact I'm not proposing Simpson-Kramer at all.
I was briefly stating Simpson-Kramer's definition. I don't know if 
Nalebuff's and Levin's definition is different from what I posted. Someone 
could look it up, because Markus posted it some weeks ago.
For best un-ambiguity, a much wordier definition is better. This time, for 
this, I chose the brief definition, partly because it isn't a proposal of 
mine.
You continued:
I had to read that sentence three times and vote on which of the three
interpretations was most likely the correct one.
I reply:
You forgot to tell us what your 3 interpretations are. Would you like to 
post them?
You continue:
I am not at all sure that any of my interpretations are what the author
meant.
I reply:
So let's find out. Post your 3 interpretations of my wording of 
Simpson-Kramer's definition.
We'll find out if any of your 3 interpretations is what Nalebuff & Levin 
meant, and we'll find out if any of your 3 interpretations is what I meant. 
Of course Nalebuff and Levin aren't the author: They're the authors.
When you say that you don't understand a definition, it helps if you say 
which part of it you didn't understand. Which different meanings you found, 
in a part that you specify.
But I'm going to re-copy the wording that I posted here, and then I'll 
define it more unambiguously:
Here's what I'd posted:
"The winner is the candidate whose greatest vote against him/her in a
pairwise comparison (defeat or victory) is the least."
Now let me try to write it more unambiguously:
(I hope that my indentations post ok, but I can't guarantee that. But pay 
attention to the "endwhile"s).
Let each candidate in turn be referred to as i.
While a particular candidate is being referred to as i:
  Let each candidate other than i, in turn, be referred to as j
  While a particular candidate is being referred to as j:
    Record the number of people who voted for j over i. Call that "the [put 
j's name here] votes
    against number for i".
  endwhile
i now has, for each of the other candidates, a votes-against number labeled 
with that other candidate's name.
Find which of those votes-against numbers of i is the largest. Call it "i's 
greatest votes against number".
endwhile
After the above has been done for each candidate in turn, declare, as the 
winner, the candidate whose greatest votes-against number is less than the 
greatest votes-against numbers of the other candidates.
[end of Simpson-Kramer instruction]
Again, I don't know whether the above is done immediately, or whether 
Simpson-Kramer first looks for a candidate with no pairwise defeats, and 
elects him/her if s/he exists.
So you can very reasonably have two different interpretations of my 
previously posted definition (and also of the definition posted here), based 
on the matter in the paragraph before this one.
I don't know if you'll find the Simposon-Kramer definition in this posting 
clearer than my briefer one int he previous posting. But if you feel that 
the Simpson-Kramer defintion that I stated in this posting has more than one 
interpretation, don't hesitate to say what they are.
Mike Ossipoff
_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today - it's FREE! 
http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
    
    
More information about the Election-Methods
mailing list