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# function hasSubsetInM
# y integer matrix
# x integer matrix, ncol(x) <= ncol(y)
# returns logical vector of length nrow(y),
# position i is TRUE if there is one element in the rows of x which is a subset of x[i, ]
hasSubsetInM <- function(y, x){
stopifnot(is.matrix(x), is.matrix(y),
typeof(x) == "integer", typeof(y) == "integer",
ncol(x) <= ncol(y))
C_hasSubsetInM(y, x)
}
# function findAllSubsets
# x integer matrix
# k integer vector, k<=length(cols)
# cols column subsetting in x, all 1<=k<=ncol(x)
# returns a matrix with k columns containing all subsets of
# k elements appearing in a row of x[, cols]
findAllSubsets <- function(x, k, cols = seq_len(ncol(x))){
stopifnot(is.matrix(x), is.integer(x),
is.integer(k), length(k) == 1L, k<=length(cols),
is.integer(cols), cols >= 1L, max(cols) <= ncol(x),
anyDuplicated(cols) == 0L)
out <- combn(
cols, k,
FUN = function(a) C_uniqueCombs(x, a),
simplify = FALSE)
do.call(rbind, out)
}
# conj_conCov: Fast calculation of coverages of conjunctions of conjunctions
# x A "scores" matrix with numeric values between 0 and 1
# cols Integer matrix with selections of columns of x as rows
# y Numeric vector with values between 0 and 1: scores of outcome variable
# f Integer vector: frequencies of the rows of x
# value A matrix with 2 rows and length(cols) columns:
# consistencies and coverages of conjunctions of columns of x
conj_conCov <- function(cols, x, y, f){
stopifnot(mode(x)=="numeric", x>=0, x<=1,
is.integer(cols), is.matrix(cols), ncol(cols)<=ncol(x), cols>=1L, cols<= ncol(x),
mode(y)=="numeric", y>=0, y<=1,
is.integer(f), length(f)==nrow(x), f>=1L)
out <- apply(cols, 1, C_conj_conCov, x, y, f)
if (!is.matrix(out)) out <- matrix(out, nrow = 2L)
rownames(out) <- c("con", "cov")
out
}
# disj_conCov: same as conj_conCov for disjunctions instead of conjunctions
# x A "scores" matrix with numeric values between 0 and 1
# cols Integer vector: selection of columns of x
# y Numeric vector with values between 0 and 1: scores of outcome variable
# f Integer vector: frequencies of the rows of x
# value A matrix with 2 rows and length(cols) columns:
# consistencies and coverages of conjunctions of columns of x
disj_conCov <- function(cols, x, y, f){
stopifnot(mode(x)=="numeric", x>=0, x<=1,
is.integer(cols), cols>=1L, cols<= ncol(x),
mode(y)=="numeric", y>=0, y<=1,
is.integer(f), length(f)==nrow(x), f>=1L)
out <- apply(cols, 1, C_disj_conCov, x, y, f)
if (!is.matrix(out)) out <- matrix(out, nrow = 2L)
rownames(out) <- c("con", "cov")
out
}
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