FAIR-V: Difference between revisions

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[[File:FAIR-V Procedure.svg|~~500px~~|thumb|right~~|FAIR-V Procedure~~]]

[[File:FAIR-V Procedure.svg|350px|thumb|right]]

[[File:FAIR-Max Procedure.svg|350px|thumb|right]]

First-Approval Instant-Runoff (FAIR) is a [[Single Member system|Single-Winner]] [[Cardinal voting systems]] proposed by [[User:Aldo Tragni|Aldo Tragni]].

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First-Approval Instant-Runoff Voting:

* "First-Approval": the vote is initially treated as a multiple-choice. However, if all the worst candidates are eliminated in a vote, then the initial multiple-choice is reduced and can become a single-choice, during the count. It's like a single-choice (refer to [[FPTP|'''F'''PTP]]) masked at the beginning by multiple-choice (refer to [[Approval AV|'''A'''pproval voting]]).

* "First": refers to the [[FPTP]] in which the voter chooses the best candidate to win. In FAIR-V the first choices are such, as long as there are "bad" candidates. After the "bad" candidates have all been eliminated from a ballot, then only the "good" ones are treated as the first choice.

* "~~Approval~~": refers to the fact that ~~the~~ ~~voter's~~ ~~first~~ ~~choices~~ ~~can~~ be ~~more~~ ~~than~~ 1, as in AV.

* "Instant-Runoff": refers to the fact that, by eliminating one candidate at a time, only two will remain at the end, obtaining the "Instant-Runoff" (comparison of the top two candidates).

* "Instant-Runoff": refers to the fact that, by eliminating one candidate at a time, only two will remain at the end, obtaining the "Instant-Runoff" (comparison of the top two candidates head-to-head).

FAIR-nV: the FAIR-V norm works with ranges of different sizes and n indicates the number of ratings used in the range, minus 1.

FAIR-'''n'''V: the FAIR-V norm works with ranges of different sizes and n indicates the number of ratings used in the range, minus 1.

*FAIR-1V: it's equivalent to AV, with ratings in [0,1].

*FAIR-1V: it's equivalent to [[Approval AV|AV]], with ratings in [0,1].

*FAIR-V: is the default definition, with ratings in [0,3].

*FAIR-5V: uses ratings in [0,5].

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''FAIR-Max resists maximization strategies (like FAIR-V), elect the utilitarian winner (much more than FAIR-V), but it's more complicated to explain (than FAIR-V).''

''FAIR-S: by removing step 2 from the list, the method resists a little less to maximization strategy, but becomes simpler and remains utilitarian.''

===mdM norm (min-do-Max norm)===