mlr3 (version 0.10.0)

mlr_measures: Dictionary of Performance Measures

Description

A simple mlr3misc::Dictionary storing objects of class Measure. Each measure has an associated help page, see mlr_measures_[id].

This dictionary can get populated with additional measures by add-on packages. E.g., mlr3proba adds survival measures and mlr3cluster adds cluster analysis measures.

For a more convenient way to retrieve and construct measures, see msr()/msrs().

Format

R6::R6Class object inheriting from mlr3misc::Dictionary.

Methods

See mlr3misc::Dictionary.

S3 methods

• as.data.table(dict) mlr3misc::Dictionary -> data.table::data.table() Returns a data.table::data.table() with fields "key", "task_type", "predict_type", and "packages" as columns.

See Also

Sugar functions: msr(), msrs()

Implementation of most measures: mlr3measures

Other Dictionary: mlr_learners, mlr_resamplings, mlr_task_generators, mlr_tasks

Other Measure: MeasureClassif, MeasureRegr, Measure, mlr_measures_classif.costs, mlr_measures_debug, mlr_measures_elapsed_time, mlr_measures_oob_error, mlr_measures_selected_features

Examples

# NOT RUN {
as.data.table(mlr_measures)
mlr_measures$get("classif.ce")
msr("regr.mse")
# }