Method evaluation poll 2005: Difference between revisions
imported>James Green-Armytage (→not Condorcet-efficient: add two versions of ER-Bucklin) |
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JG CB KV DK MO |
JG CB KV DK MO |
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[[Plurality]] |
[[Plurality]] |
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2 2 2 2 |
2 2 2 2 0 |
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[[Runoff voting|Two round runoff]] |
[[Runoff voting|Two round runoff]] |
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3 5 3 3 |
3 5 3 3 0 |
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[[Approval voting|Approval]] |
[[Approval voting|Approval]] |
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5? 6 8 5 |
5? 6 8 5 9 |
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[[Random Ballot|Random Ballot]] |
[[Random Ballot|Random Ballot]] |
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1 1 1 1 |
1 1 1 1 0 |
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=== ranking input === |
=== ranking input === |
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==== not Condorcet-efficient ==== |
==== not Condorcet-efficient ==== |
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JG CB KV DK |
JG CB KV DK MO |
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[[Borda count]] |
[[Borda count]] |
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1 3 0 0 |
1 3 0 0 0 |
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[[IRV]] without equal rankings |
[[IRV]] without equal rankings |
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4 7 3 3 |
4 7 3 3 0 |
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ER-IRV(whole) |
ER-IRV(whole) |
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6 4 ? ? |
6 4 ? ? 0 |
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ER-IRV(fractional) |
ER-IRV(fractional) |
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6 6 3 ? |
6 6 3 ? 0 |
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[[Bucklin voting|Bucklin]] without equal rankings |
[[Bucklin voting|Bucklin]] without equal rankings |
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3? 6.5 6 0 |
3? 6.5 6 0 |
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[[ER-Bucklin|ER-Bucklin(whole)]] |
[[ER-Bucklin|ER-Bucklin(whole)]] |
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5.5? 2 |
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5.5? |
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[[ER-Bucklin|ER-Bucklin(fractional)]] |
[[ER-Bucklin|ER-Bucklin(fractional)]] |
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? |
? |
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JG CB KV DK MO |
JG CB KV DK MO |
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[[MMPO|minmax(pairwise opposition)]] |
[[MMPO|minmax(pairwise opposition)]] |
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5 4 5 ? |
5 4 5 ? |
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[[CDTT|CDTT,IRV]] |
[[CDTT|CDTT,IRV]] |
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7 9 6 ? |
7 9 6 ? |
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6? 9 ? |
6? 9 ? |
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[[Majority Defeat Disqualification Approval]] ([[MDDA]]) |
[[Majority Defeat Disqualification Approval]] ([[MDDA]]) |
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6? 7.5? 9 |
6? 7.5? 9 10 |
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==== Condorcet-efficient ==== |
==== Condorcet-efficient ==== |
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6.5 8.5 6 3 |
6.5 8.5 6 3 |
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[[CWP|approval weighted pairwise]] (e.g. with ranked pairs base) |
[[CWP|approval weighted pairwise]] (e.g. with ranked pairs base) |
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9 8 7 3 |
9 8 7 3 3 |
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[[approval margins]] |
[[approval margins]] |
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5.5 9 ? 3 |
5.5 9 ? 3 |
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=== rating input === |
=== rating input === |
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JG KV DK |
JG KV DK MO |
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[[range voting]] (ratings summation) |
[[range voting]] (ratings summation) |
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5.5 5 2 |
5.5 5 2 8.75 |
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[[Median Ratings|median ratings]] |
[[Median Ratings|median ratings]] |
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3 4 2 |
3 4 2 |
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ranked pairs([[cardinal pairwise]]) |
ranked pairs([[cardinal pairwise]]) |
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9.5 5 2 |
9.5 5 2 4 |
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beatpath([[cardinal pairwise]]) |
beatpath([[cardinal pairwise]]) |
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9.5 5 2 |
9.5 5 2 4 |
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=== other === |
=== other === |
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JG DK MO |
JG DK MO |
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[[candidate withdrawal option|CWO]]-ER-IRV(whole) |
[[candidate withdrawal option|CWO]]-ER-IRV(whole) |
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7 1 |
7 1 4 |
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[[candidate withdrawal option|CWO]]-ER-IRV(fractional) |
[[candidate withdrawal option|CWO]]-ER-IRV(fractional) |
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8 1 |
8 1 4 |
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[[candidate withdrawal option|CWO]]-ranked pairs(WV) |
[[candidate withdrawal option|CWO]]-ranked pairs(WV) |
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8 1 |
8 1 5 |
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[[candidate withdrawal option|CWO]]-ranked ballot plurality |
[[candidate withdrawal option|CWO]]-ranked ballot plurality |
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6 1 |
6 1 |
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[[MMPO|minmax(pairwise opposition)]] with [[AERLO and ATLO]] |
[[MMPO|minmax(pairwise opposition)]] with [[AERLO and ATLO]] |
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4 ? |
4 ? |
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[[MMPO]] with AERLO, ATLO, & [[Power Truncation]] |
[[MMPO]] with AERLO, ATLO, & [[Power Truncation]] |
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? |
? |
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[[MMPO]] with (only) [[Power Truncation]] |
[[MMPO]] with (only) [[Power Truncation]] |
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? |
? |
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[[beatpath]](WV) with AERLO and ATLO |
[[beatpath]](WV) with AERLO and ATLO |
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8 ? |
8 ? 4 |
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[[beatpath]](WV) with [[strong/weak preference option]] |
[[beatpath]](WV) with [[strong/weak preference option]] |
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7.5 ? |
7.5 ? 4 |
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[[random jury]] method |
[[random jury]] method |
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? |
? 1 |
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== See also == |
== See also == |
Revision as of 03:06, 1 July 2005
Please rate the following single-winner methods on a scale from 0 to 10, on functional merit alone. That is, leaving the issue of public salability aside, how well will the method perform in a large, contentious electorate? Decimal ratings are allowed.
The answers you give on your first pass through the survey need not be final. Please feel free to change/update your answers as many times as you like. You may leave a question mark next to your score for a given method if you are particularly uncertain about that score, and you may also substitute a question mark for the number if you feel unable to evalute the method.
Feel free to add more methods to the poll, especially interesting ones! This goes without saying, but please don't change other people's ratings! Try to keep the columns tidy so that it's clear whose scores are whose. The format of this poll is based on that of the essential questions poll. Please identify yourself by your initials in the body of the poll, and in the participants section at the top of the poll. This poll will be ongoing; that is, it has no closing date. Also, there is no official tally method, and no official winner will be declared.
the participants
JG James Green-Armytage CB Chris Benham KV Kevin Venzke DK Dave Ketchum MO Mike Ossipoff
the methods
binary input
JG CB KV DK MO Plurality 2 2 2 2 0 Two round runoff 3 5 3 3 0 Approval 5? 6 8 5 9 Random Ballot 1 1 1 1 0
ranking input
not Condorcet-efficient
JG CB KV DK MO Borda count 1 3 0 0 0 IRV without equal rankings 4 7 3 3 0 ER-IRV(whole) 6 4 ? ? 0 ER-IRV(fractional) 6 6 3 ? 0 Bucklin without equal rankings 3? 6.5 6 0 ER-Bucklin(whole) 5.5? 2 ER-Bucklin(fractional) ?
nearly Condorcet-efficient
JG CB KV DK MO minmax(pairwise opposition) 5 4 5 ? CDTT,IRV 7 9 6 ? CDTT,minmax(pairwise opposition) ? 5 7 ? Condorcet//approval with FBC patch ("tied at the top" rule) 6? 9 ? Majority Defeat Disqualification Approval (MDDA) 6? 7.5? 9 10
Condorcet-efficient
JG CB KV DK MO ranked pairs(WV) 7 7 8 8 4 ranked pairs(margins) 2 4 3 3 0 river(wv) 7 8 7 4 beatpath(WV) 7 7 8 7 4 beatpath(margins) 2 4 3 3 0 sequential dropping(WV) 7 ? 7 ? 4 minmax(WV) 4 ? 7 7 3 minmax(margins) 1 ? 3 3 0 Smith//minmax(WV) 6 ? 7 ? 3.5 Smith//minmax(margins) 2 ? 3 ? 0 Nanson 5.5? ? 3 ? 0 Raynaud 6? ? 3 3 0
ranking input with approval cutoff
JG CB KV DK definite majority choice a.k.a. ranked approval voting 6.5 8.5 6 3 approval weighted pairwise (e.g. with ranked pairs base) 9 8 7 3 3 approval margins 5.5 9 ? 3 democratic fair choice (DFC) ? 3 3
rating input
JG KV DK MO range voting (ratings summation) 5.5 5 2 8.75 median ratings 3 4 2 ranked pairs(cardinal pairwise) 9.5 5 2 4 beatpath(cardinal pairwise) 9.5 5 2 4
other
JG DK MO CWO-ER-IRV(whole) 7 1 4 CWO-ER-IRV(fractional) 8 1 4 CWO-ranked pairs(WV) 8 1 5 CWO-ranked ballot plurality 6 1 minmax(pairwise opposition) with AERLO and ATLO 4 ? MMPO with AERLO, ATLO, & Power Truncation ? MMPO with (only) Power Truncation ? beatpath(WV) with AERLO and ATLO 8 ? 4 beatpath(WV) with strong/weak preference option 7.5 ? 4 random jury method ? 1
See also
Essential Questions poll