<br><br><div class="gmail_quote">2012/1/14 MIKE OSSIPOFF <span dir="ltr"><<a href="mailto:nkklrp@hotmail.com">nkklrp@hotmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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ied-at-Top-Pairwise-Beats-All, Top Ratings. <br><br>In keeping with Kevin's naming, and reflecting its relation to ICA, it could be called <br>Improved Condorcet-Top (ICT).<br><br>I'll use that because it's shorter.<br>
<br>One thing that I like about the tied-at-top methods is that they elect A in the ABE,<br>meaning that one-sided coalition support is sufficient to defeat C, but without giving<br>the election away to B.<br><br>Of course the election of A violates the Plurality Criterion, but that's fine with me.<br>
To me, the _practical_ advantage described in the previous paragraph is worth more than<br>the non-practical, aesthetic, Plurality Criterion.<br></div></div></blockquote><div><br></div><div>In practical terms, what if the A voters rating of B is purely strategic? I'd call such LNH-violating strategies "parasitic", and to me they're every bit as bad as burial strategies, because they have a similar potential, if miscalculated, to elect an entirely-undeserving candidate.</div>
<div><br></div><div>Jameson</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div dir="ltr"><br>ICT has burial strategy. In the ABE, the B voters can make B win by burying A, by middle-<br>
rating C but not A. Then A doesn't have any indifference on his side, in hir comparison<br>with C.<br><br>But B still beats C, because B>C is still greater than C>B. For the same reason, C<br>still doesn't beat everyone.<br>
<br>And B still beats A, because<br>B>A + B=A is greater than A>B. <br><br>So B is now the only beats-all candidate. B wins.<br><br>As currently defined, ICT elects C in Kevin's MMPO bad-example.<br><br>No one is indifferent between A and B.<br>
<br>So, since A=B is zero, then A>B + A=B is no greater than B>A. <br><br>Likewise vice-versa, of course, since A & B are symmetrically-related.<br><br>Therefore, neither beats the other.<br><br>Maybe that can be fixed, by defining "beat" in the opposite way, so that x beats y<br>
if x>y is greater than y>x + x=y, and then saying that the winning set is the set<br>of unbeaten candidates.<br><br>In summary, ICT does three things that some find unacceptable:<br><br>1. Plurality Criterion violation<br>
2. Successful burial strategy<br>3. Noncompliance in Kevin's MMPO bad-example.<br><br>#1 and #2 aren't a problem to me. #2 could be, but I don't know what burial-deterrence<br>ICT has.<br><br>With the sole exception of MMT, the conditional methods meet Mono-Add-Plump.<br>
<br>They probably meet the Plurality Criterion too, because of their close relation to<br>Approval. If B defects, those methods elect C, in compliance with the Plurality Criterion.<br><br>Burial strategy has no meaning in the conditional methods. As I've been saying, they're<br>
a completely new kind of method, with a new kind of strategy, a milder strategy.<span class="HOEnZb"><font color="#888888"><br><br>Mike Ossipoff<br> </font></span></div></div>
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