(factor())
True (observed) labels. Must have the exactly same two levels and the same length as response.

(factor())
Predicted response labels. Must have the exactly same two levels and the same length as truth.

(numeric())
Predicted probability for positive class. Must have exactly same length as truth.

(character(1))
Name of the positive class.

(numeric(1))
Value that should be returned if the measure is not defined for the input (as described in the note). Default is NaN.

(any)
Additional arguments. Currently ignored.