Construct a learner — learner

Constructs a learner class object for isotonic regression with isoregw.

learner_isoreg(formula, info = "targeted::isoregw", learner.args = NULL, ...)

Arguments

formula: (formula) Formula specifying response and design matrix.
info: (character) Optional information to describe the instantiated learner object.
learner.args: (list) Additional arguments to learner$new().
...: Additional arguments to isoregw.

Value

learner object.

Examples

x <- runif(5e3, -5, 5)
pr <- lava::expit(-1 + x)
y <- rbinom(length(pr), 1, pr)
d <- data.frame(y, x)

lr <- learner_isoreg(y ~ x)
lr$estimate(d)
pr_iso <- lr$predict(d)

if (interactive()) {
  plot(pr ~ x, cex=0.3)
  lines(sort(x), pr_iso[order(x)], col="red", type="s")
}