R/MeasureRegrLogloss.R

In mlr3proba: Probabilistic Supervised Learning for 'mlr3'

#' MeasureRegrLogloss = R6::R6Class("MeasureRegrLogloss",
#'   inherit = MeasureRegr,
#'   public = list(
#'     #' @description Creates a new instance of this [R6][R6::R6Class] class.
#'     initialize = function() {
#'     super$initialize(
#'       id = "regr.logloss",
#'       range = c(0, Inf),
#'       minimize = TRUE,
#'       predict_type = "distr"
#'       #        task_properties = "twoclass",
#'       #        packages = "Metrics"
#'     )
#'     },
#'
#' .score = function(prediction, ...) {
#'   return(mean(-log(as.numeric(do.call(prediction$prob$pdf,
#'                                       as.list(prediction$truth))))))
#' }
#'   )
#' )