mlr_measures_debug_classif function

Debug Measure for Classification

This measure returns the number of observations in the PredictionClassif object. Its main purpose is debugging. The parameter na_ratio (numeric(1)) controls the ratio of scores which randomly are set to NA, between 0 (default) and 1.

Dictionary

This Measure can be instantiated via the dictionary mlr_measures or with the associated sugar function msr():

mlr_measures$get("debug_classif")
msr("debug_classif")

Meta Information

• Task type: NA
• Range: $[0, Inf)$
• Minimize: NA
• Average: macro
• Required Prediction: response
• Required Packages: list("mlr3")

Parameters

Id	Type	Default	Range
na_ratio	numeric	-	$[0, 1]$

Examples

task = tsk("wine")
learner = lrn("classif.featureless")
measure = msr("debug_classif", na_ratio = 0.5)
rr = resample(task, learner, rsmp("cv", folds = 5))
rr$score(measure)

See Also

• Chapter in the mlr3book: https://mlr3book.mlr-org.com/chapters/chapter2/data_and_basic_modeling.html#sec-eval

• Package list("mlr3measures") for the scoring functions. Dictionary of Measures : mlr_measures

  as.data.table(mlr_measures) for a table of available Measures in the running session (depending on the loaded packages).

• Extension packages for additional task types:

  • list("mlr3proba") for probabilistic supervised regression and survival analysis.
  • list("mlr3cluster") for unsupervised clustering.

Other Measure: Measure, MeasureClassif, MeasureRegr, MeasureSimilarity, mlr_measures, mlr_measures_aic, mlr_measures_bic, mlr_measures_classif.costs, mlr_measures_elapsed_time, mlr_measures_internal_valid_score, mlr_measures_oob_error, mlr_measures_regr.rsq, mlr_measures_selected_features

Super class

mlr3::Measure -> MeasureDebugClassif

Methods

Public methods

• list("MeasureDebugClassif$new()")

• list("MeasureDebugClassif$clone()")

Method new()

Creates a new instance of this R6 class.

Usage

MeasureDebugClassif$new()

Method clone()

The objects of this class are cloneable with this method.

Usage

MeasureDebugClassif$clone(deep = FALSE)

Arguments

• deep: Whether to make a deep clone.