[EM] Definitions of some terms recently used in postings

[MIKE OSSIPOFF]

Automatic Equal Ranking Line Option (AERLO):

A voter may mark a line in hir ranking, meaning that if no one above that 
line wins, then that voter wants to promote to 1st place all of hir 
above-line candidates and have a recount.

(In pairwise-count methods the promotion only takes place if, additionally, 
there's a circular tie containing above-line and below-line candidates).

[end of AERLO definition]

Automatic Truncation Line Option (ATLO):

A voter may mark a line in hir ranking, meaning that if no one above the 
line wins, then that voter wants to drop from hir ranking all of hir 
below-line candidates and have a recount.

(In pairwise-count methods the dropping only takes place if, additionally, 
there's a circular tie containing above-line and below-line candidates).

[end of ATLO definition]

Strong Sincere Strategy Criterion (SSSC):

If a majority of all the voters prefer X to Y and vote sincerely, then Y 
shouldn't win.

[end of SSSC definition]

SSSC is an especially demanding criterion, the most demanding attainable 
strategy criterion, met only by RMDD.

Ranked Majority Defeat Disqualification (RMDD):

Balloting: Rankings
Equal rankings and truncation permitted.
Voters may rank as many candidates as they want to.

A candidate loses if there's another candidate ranked over hir by a 
majority.

If RMDD returns more than one wiinner, that tie is solved by a good wv 
Condorcet version.

If RMDD returns zero winners, because all are disqualified, then a new 
election must be held, with all new candidates. The new election should be 
prompt, so that it can't be said that the incumbant has been effectively 
re-elected.

[end of RMDD definition]

Though RMDD was intended only to meet SSSC, which can require the drastic 
measure of disqualifying all the candidates and running all new ones in a 
new election, a drawback that prevents RMDD's use when a choice must be made 
between a certain set of alternatives, RMDD's accomplishment in that 
co-operation/defection example suggests that RMDD  has use even if we just 
say "All ties are solved by a good wv Condorcet version (ties with several 
winners and ties with 0 winners)". I'd call that RMDD2, or Moderate RMDD.

Alternatively, to make it a little more practical in public elections, where 
it could be disastrous if no one could win, in a long series of elections, 
one could say that at first if everyone is disqualified, a new election must 
be held with all new candidates, but then, if RMDD again returns zero 
winners, then that tie is solved by a good wv Condorcet method. I'd call 
that 3rd RMDD version RMDD3.

Mike Ossipoff

_________________________________________________________________
Is your PC infected? Get a FREE online computer virus scan from McAfee® 
Security. http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963