[EM] Juho: Sincere ranking, contd.

2012-11-17 Thread Michael Ossipoff
Juho:

On 15.11.2012, at 18.00, Michael Ossipoff wrote:

 If I ranked all of the candidates sincerely, the Democrat and the
 Republican would be at the bottom of that ranking. Even if they're
 winnable.

 So you can't say that not ranking unwinnable candidates allows you to
 vote a short ranking.

Juho repled:

I said that not ranking unwinnable candidates does not cause very much harm.

[endquote]

Yes, and then I said that that doesn't mean that you don't need to
vote a long ranking in TUC. My point was that Symmetrical ICT would
save you a lot of distasteful long-ranking work, in a many-candidates
election.

Juho said:

In your case I assume that your most preferred candidates can not win.

[endquote]


1, The above discussion was about bottom-end considerations, not about
favorites.

2. Don't worry about me. The problem that I spoke of, regarding
favorite-burial, was about how the larger voting public will vote,
given that they believe the Democrat-disinformation, and given TUC's
optimal strategy, given that belief.

3. But ok, assume that, of the candidates I regard as acceptable, the
only one who can win is one who isn't my favorite. In TUC or IRV, I'd
rank that one winnable acceptable alone in 1st place.

...as would nearly all voters here. In ICT or Symmetrical ICT, I'd of
course rank all of the acceptables in 1st place, as would everyone
else. In Approval I'd approve all of the acceptables, as would
everyone else.

Juho said:

Based on that you could leave them unranked

[endquote]

No need to leave your favorites unranked just because they can't win.
Just rank them below the winnable acceptable(s).

Juho said;

, but you should rank at least one of the two winnable candidates.

[endquote]


Where did you get your assumption that there are and will be only two
winnable candidates. From the mass-media, no doubt. :-)

But certainly. If the method is TUC(margins) or IRV, and it's
genuinely, fully, 0-info, then rank all the candidates in sincere
order of preference.

But real 0-info, at top-end, is unlikely. Without it, in any kind of
Condorcet or IRV, you won't know what to do. That's a good argument
for Approval and Score.

Juho said:

This (focus on who wins) is the way we usually measure the performance
of election methods and study the recommended voting practices for the
voters.

[endquote]

Yes. There's a good reason for that. Pragmatism, optimal voting based
on predictive beliefs and acceptability beliefs, is known to be what
governs people's voting here. That isn't in doubt.


There could however be other reasons why it would make sense to rank
your favourite candidates. You could rank them at top to help them (or
their party) to win at the next election. Or you could give them this
way some encouragement and thumbs up, and you could increase their
chances of becoming elected in some other important position. In order
to get good information on the true preferences of the electorate (for
statistics and studies) it would make sense for all voters to always
rank as many candidates as possible.

[endquote]

Voters here have made it abundantly clear that they're instrumental
voters: They vote only to optimize their outcome in the current
election, based on their predictive and acceptability beliefs.

Yes, for finding the CW, of course it's desirable for people to rank
all of the candidates. TUC(margins) is the method that meets the
Condorcet Criterion and 0-info Sincerity. The problem is that there
will be strong enough predictive feelings at top end so that people
won't rank sincerely. That's why I say that the goal of sincere
rankings and electing the CW must be abandoned.

 Sure, there's a case for saying that people would enjoy indicating who
 is worst. I just don't think that the Democrats and Republicans
 deserve to be ranked at all. Not ranking them at all is better than
 dignifying them with rank positions--even last and 2nd-to-last.

That sounds like you are talking about implicit approval of all the
ranked candidates.

[endquote]

I'll guess that implicit approval means ranking the same candidates
whom I'd approve if it were an Approval election.

Yes, you're right then. In Approval we don't approve unacceptables. In
a rank method, I'd aesthetically prefer to not rank unacceptables.
That's why I prefer Symmetrical ICT, among the rank methods.

Not ranking all of the candidates would work against finding the CW.
But, as described above, we won't find the CW anyway.


Juho says:

I prefer to see rankings as rankings, i.e. truncated vote AB means
ABC=D=E, not ABC=D=E

[endquote]

Ok, but when there are lots of candidates, most of them unacceptable,
you're in for a lot of unnecessary ranking work. But if you like that,
then it's no problem.

That's why I offer ICT as well as Symmetrical ICT, for polling. (and
also as preferable alternatives to TUC, for people who want
rank-balloting in official public elections--though I recommend only
Approval and Score for official public elections).



[EM] Symmetrical IC-RP(losing-votes) or Symmetrical IC-Beatpath(losing-votes)?

2012-11-17 Thread Michael Ossipoff
What if equal ranking at top and bottom were treated as in Symmetrical
ICT, but the completion was by Beatpath or Ranked-Pairs, instead of by
top-count? If it was Beatpath(losing-votes), or
Ranked-Pairs(losing-votes), would that confer CD compliance, avoiding
the Approval bad-example?

It seems to me that I once noticed that Smith is incompatible with
FBC. The above-described method would meet Smith, wouldn't it? Then I
don't suppose it could meet FBC. Could any Beatpath; or Ranked-Pairs
method meet FBC?

The top-end Improved-Condorcet improvement avoids one cause of
FBC-failure, but meeting Smith might cause FBC-failure in another way.

So I'm still asking if it's possible to meet FBC, CD, Condorcet
Criterion, 0-info LNHe, Clone-Independence, and MMC.

Smith is mostly for show, but MMC would be nice to have.

If losing-votes has the ability to meet CD, then maybe Symmetrical
IC-Ranked-Pairs(lv) or Symmetrical IC-Beatpath(lv) would have a chance
of accomplishing that.

But all of those criterion-compliances seems like too much to ask,
especially if Smith and FBC are mutually incompatible.

Mike Ossipoff

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