In Approval Voting, voters indicate which Choices they approve of indicating no preference. Approval can be infered from a Ranked Choice Ballot, by treating each ranked Choice as Approved.
Returns a RankCount object for the current Active Set taking an optional argument of an active list as a HashRef.
my $Approval = $Election->Approval(); say $Approval->RankTable; # to specify the activeset my $Approval = $Election->Approval( $activeset ); # to specify a cutoff on Range Ballots my $Approval = $Election->Approval( $activeset, $cutoff );
When counting Approval on Range Ballots it is appropriate to set a threshold below which a choice is not considered to be supported by the voter, but indicated to represent a preference to even lower or unranked choices.
A good value is half of the maximum possible score, however, the default action must be to treat all choices with a score as approved. With a Range of 0-10 a cutoff of 5 would be recommended, choices scored 4 or lower would not be counted for approval. If cutoff isn't provided it defaults to 0 producing the desired default behaviour.
For Ranked Ballots the cutoff is ignored. If a cutoff is desired for Ranked Ballots a Neutral Preference Option should be included on the Ballot to indicate when subequent choices should not be considered Approved. This is not currently available in Vote::Count.
John Karr (BRAINBUZ) email@example.com
Copyright 2019 by John Karr (BRAINBUZ) firstname.lastname@example.org.
This module is released under the GNU Public License Version 3. See license file for details. For more information on this license visit http://fsf.org.