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<div class="moz-cite-prefix">On 24/05/2019 12:43, Richard Lung
wrote:<br>
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<div class="moz-cite-prefix">With FAB STV, a blank ballot returned
means NOTA (without privileging that particular preference perm
on the ballot paper) and counts as one vote towards a quota for
leaving an empty seat. Any partially blank vote of preferences
also counts to a less extent against a seat being filled. This
procedure establishes absolute preference for the candidates as
a whole, not just relative preference between them.</div>
<div class="moz-cite-prefix">You would indeed have to tell the
voters in advance the consequences of their being remiss in
filling in all the preferences!</div>
<div class="moz-cite-prefix"><br>
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<div class="moz-cite-prefix">from</div>
<div class="moz-cite-prefix">Richard Lung.<br>
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<div class="moz-cite-prefix"><br>
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<div class="moz-cite-prefix">On 24/05/2019 00:24, Stéphane
Rouillon wrote:<br>
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<div>All criterias (Winning Votes, Margins, Relative Margins)
have advantages and are acceptable. The fine choice depends on
the interpretation you told voters that would be made of blank
ballots. If a blank rank means "all bad", WV is perfect. If it
means "all the same" Margin is good, and if it means "I don't
know but I trust other voters to express a valid opinion about
this option", then RM is perfect. Just tell voters the chosen
interpretation of blank tanks in advance so they can fill a
sincere ballot...<br>
<br>
Envoyé de mon iPhone</div>
<div><br>
Le 22 mai 2019 à 20:18, robert bristow-johnson <<a
href="mailto:rbj@audioimagination.com"
moz-do-not-send="true">rbj@audioimagination.com</a>> a
écrit :<br>
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<p><br>
i'm posting this to the list. i hope it's okay.</p>
<p>i had been asked:<br>
<br>
> This "plausible example" you can think of, why don't
you show it to us?</p>
<p>i'm not as good as you guys in dreaming up the number of
ballots ranked however:</p>
<p> ex. A>B>C>D</p>
<p>but could you have a defeat matrix where</p>
<p> A>B>C</p>
<p>but C>A by a smaller defeat strength than A>B or
B>C. But D>A by an even smaller defeat strength,
however D<B and D>C? </p>
<p>i dunno how to dream up ballot combinations to do that.</p>
<p><br>
> Without it all I can say that is that the River
winner may or may not be<br>
> a "better choice" than the<br>
> RP winner.<br>
><br>
> River's main practical point is that it easier than
Schulze and RP to use.</p>
<p>i think it's more complicated than RP. it's RP with an
additional exception.</p>
<p> </p>
<p>i have to say i am still not convinced of WV. probably
Schulze-Margins is still the best, but RP-Margins good
enough and possibly easier to sell to policy makers and
the public.</p>
<p>i like Margins in principle: The percentage Margin is
(WV-LV)/(WV+LV) and is a measure of the decisiveness of
defeat, without respect to the size of the election. So
5% defeat is a more decisive defeat than a 4% defeat.</p>
<p>But if you consider every Condorcet pair as it's own
little election, then the salience of the election would
be the number of voters that weigh in on it, which is
WV+LV.</p>
<p>So if the net defeat strength (the index to rank the
pairs) is the product of how important the election is
with the decisiveness of defeat you get:</p>
<p> (WV+LV) x (WV-LV)/(WV+LV) = WV - LV </p>
<p>it just seems to me that Margins is better than WV.</p>
<p>but say, WV, is a good idea for defeat strength. is LV a
better idea?</p>
<p>hmmmm.</p>
<p>--<br>
<br>
r b-j <a
href="mailto:rbj@audioimagination.com"
moz-do-not-send="true">rbj@audioimagination.com</a><br>
<br>
"Imagination is more important than knowledge."<br>
</p>
<p> </p>
<p> </p>
<p> </p>
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