cdc_simple {votesys} | R Documentation |
Candidates enter into pairwise comparison. if the number of voters who prefer a is larger than the number of voters who prefer b, then a wins b, a gets 1 point, b gets 0 point. If the numbers are equal, then both of them gets 0 point. Suppose there are n candidates, the one gets n-1 points wins (that is, he wins in all pairwise comparison). There may be no Condorcet winner. If thus, you can try other Condorcet family methods.
cdc_simple(x, allow_dup = TRUE, min_valid = 1)
x |
it accepts the following types of input:
1st, it can be an object of class |
allow_dup |
whether ballots with duplicated score values are taken into account. Default is TRUE. |
min_valid |
default is 1. If the number of valid entries of a ballot is less than this value, it will not be used. |
a condorcet
object, which is essentially
a list.
(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
. When
x is not a vote
object, it may be NULL.
(6) valid_ballot_num
number of ballots that are
actually used to compute the result. When
x is not a vote
object, it may be NULL.
(7) winner
the winner; may be NULL.
(8) input_object
the class of x
.
(9) cdc
the Condorcet matrix which is actually used.
(10) dif
the score difference matrix. When
x is not a vote
object, it may be NULL.
(11) binary
win and loss recorded with 1 (win),
0 (equal) and -1 (loss).
(12) summary_m
times of win (1), equal (0)
and loss (-1).
(13) other_info
currently nothing.
raw <- c(
rep(c('m', 'n', 'c', 'k'), 42), rep(c('n', 'c', 'k', 'm'), 26),
rep(c('c', 'k', 'n', 'm'), 15), rep(c('k', 'c', 'n', 'm'), 17)
)
raw <- matrix(raw, ncol = 4, byrow = TRUE)
vote <- create_vote(raw, xtype = 2, candidate = c('m', 'n', 'k', 'c'))
win1 <- cdc_simple(vote) # winner is n
win2 <- cdc_simple(win1$cdc) # use a Condorceit matrix
win2 <- cdc_simple(win1) # use an existent result