approval_method: Approval Method

In votesys: Voting Systems, Instant-Runoff Voting, Borda Method, Various Condorcet Methods

Description

In approval method, each voter is required to mention one or more candidates, and the winner is the one who gets the top frequency. For this function, a ballot with candidates more than required and different scores is also valid. For a score matrix, the function will check the positions j, k...which have the lowest scores (in a vote object, the lower, the better) in the ith row. However, the function will first check the approval_able element of the vote object. If it is FALSE, the winner will be NULL.

Usage

approval_method(x, min_valid = 1, n)

Arguments

x	an object of class vote.
min_valid	default is 1. If the number of valid entries of a ballot is less than this value, the ballot will not be used.
n	the number of candidates written down by a voter should not larger than this value.

Value

a list object.

• (1) call the function call.

• (2) method the counting method.

• (3) candidate candidate names.

• (4) candidate_num number of candidate.

• (5) ballot_num number of ballots in x.

• (6) valid_ballot_num number of ballots that are used to compute the result.

• (7) winner the winners, may be one, more than one or NULL.

• (8) n equal to the argument n.

• (9) other_info frequencies of candidates mentioned by voters.

Examples

raw <- matrix(NA, nrow = 22, ncol = 5)
for (i in 1: 20){
   set.seed(i)
   raw[i, ] <- sample(c(1: 5, NA, NA, NA), 5)
}
raw[21, ] <- c(4, 5, 3, 1, 2)
raw[22, ] <- c(3, 5, 1, 2, 4)
vote <- create_vote(raw, xtype = 1)
y <- approval_method(vote, n = 3)
y <- approval_method(vote, n = 3, min_valid = 5)
y <- approval_method(vote, n = 4, min_valid = 3)

votesys documentation built on May 2, 2019, 1:32 p.m.