Nothing
cindex = function(truth, crank, cutoff = NULL,
weight_meth = c("I", "G", "G2", "SG", "S"),
tiex = 0.5, train = NULL) {
if (length(unique(crank)) == 1) {
return(0.5)
}
assert_surv(truth)
assert_numeric(crank)
if (anyMissing(truth)) {
return(NA_real_)
}
ord = order(truth[, "time"])
time = as.double(truth[, "time"])[ord]
status = as.integer(truth[, "status"])[ord]
weight_meth = match.arg(weight_meth)
if (weight_meth %in% c("I", "S")) {
cens = matrix()
} else {
cens = survival::survfit(Surv(train[, "time"], 1 - train[, "status"]) ~ 1)
cens = matrix(c(cens$time, cens$surv), ncol = 2)
}
if (weight_meth == "SG" | weight_meth == "S") {
surv = survival::survfit(train ~ 1)
surv = matrix(c(surv$time, surv$surv), ncol = 2)
} else {
surv = matrix()
}
if (is.null(cutoff)) {
cutoff = max(time) + 1
}
c_concordance(time, status, crank[ord], cutoff, weight_meth, cens, surv, tiex)
}
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