[EM] AERLO and ATLO definitions

[MIKE OSSIPOFF]

James--

You wrote:

AERLO/ATLO:
	AERLO (automatic equal ranking line option) allows a voter to specify
that all preferences between candidates ranked above a certain line should
be changed to equalities in the event of a majority rule cycle. ATLO
(automatic truncation line option) allows a voter to specify that all
preferences between candidates ranked below a certain line should be
changed to equalities in the event of a majority rule cycle.

I reply:

That's different from my definitions of AERLO and ATLO. Here they are:

AERLO for pairwise-count methods:

The voter may specify a line in his/her ranking, to indicate that if no 
candidate above the line wins, and if there's a circular tie that includes 
above-line and below-line candidates, then that voter wants to promote all 
of his/her above-line candidates to first place, and hold another count.

[end of AERLO definition for pairwise-count methods]

For non-pairwise-count methods, delete the requirement about the cycle. In 
other words, if the method is not a pairwise-count method, then the 
following is the definition of AERLO:

AERLO for non-pairwise-count methods:

The voter may specify a line in his/her ranking, to indicate that if no 
candidate above the line wins, then that voter wants to promote all of 
his/her above-line candidates to first place, and hold another count.

[end of AERLO definition for non-pairwise-count methods]

ATLO:

Same as AERLO except that, instead of promoting his/her above-line 
candidates to first place, the voter instead wants to drop his/her below 
line candidates from his/her ranking.

[end of ATLO definiition]

ATLO would be useful with pairwise-count methods, but, with some 
non-pairwise-count methods, would have no effect.

ATLO would be especially useful for avoiding, with Condorcet, the 
co-operation/defection dilemma that you described. And ATLO would allow a 
voter to use the defensive truncation deterrent against offensive 
order-reversal while still voting a complete ranking that expresses all of 
his/her preferences.

Mike Ossipoff

_________________________________________________________________
Don’t just search. Find. Check out the new MSN Search! 
http://search.msn.click-url.com/go/onm00200636ave/direct/01/