FAIR-V: Difference between revisions

Procedure simplified
(Simplified section on strategies)
(Procedure simplified)
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[[File:FAIR-V Procedure.svg|500px|thumb|right|FAIR-V Procedure]]
First-Approval Instant-Runoff Voting (FAIR-V) is a [[Single Member system|Single-Winner]] [[Cardinal voting systems]] developedproposed by [[User:Aldo Tragni|Aldo Tragni]].
 
The objectives of this voting system is the balance between simplicity, resistance to strategies, and elect the utilitarian winner.
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==Procedure==
 
Ballot use range [0,3].
Voter score candidates with ratings in [0,3]. Set -1 points to the lowest ratings in each vote (0 to all others).
 
Eliminate the candidate considered worst by the most voters.
# The candidate with the lowest sum of points is eliminated (if in a single vote all candidates with -1 are eliminated, then the remaining candidates with the lowest rating will be set to -1).
 
ProceduresThe 1above elimination is repeated, until only one candidate remainsis left, who is the winner.
 
''Note: worst candidates for a voter are those (among the remaining) with the lowest rating in his ballot.''
 
===Normalization===
 
Bullet Min Norm (B-Min Norm): set -1 the minimum value of the ballot to normalize, and the others all to 0.
 
The actual FAIR-V algorithm uses the B-Min Norm and eliminate the candidate with the lowest point sum.
 
UsingB-Min this normNorm, it'sand possible to apply thealso FAIR-V, is procedureapplicable also to ranges with more than 4 ratings.
 
===Name derivation===
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A big difference between the 2 types of counting is that in FAIR-V the failure of monotonicity is practically absent, while [[IRV]] is one of the systems in which it's most present.
 
===[[PRO-VCoombs]]===
 
Use ranked votes instead of range [0,3] and win the candidate with the absolute majority, if there is after an elimination.
FAIR-V is more resistant to strategies, but has a more complex procedure than [[PRO-V]].
 
==References==
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