mlr_measures_aic: Akaike Information Criterion Measure

In mlr3: Machine Learning in R - Next Generation

Akaike Information Criterion Measure

Description

Calculates the Akaike Information Criterion (AIC) which is a trade-off between goodness of fit (measured in terms of log-likelihood) and model complexity (measured in terms of number of included features). Internally, stats::AIC() is called with parameter k (defaulting to 2). Requires the learner property "loglik", NA is returned for unsupported learners.

Dictionary

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

mlr_measures$get("aic")
msr("aic")

Meta Information

• Task type: “NA”

• Range: (-\infty, \infty)

• Minimize: TRUE

• Average: macro

• Required Prediction: “NA”

• Required Packages: mlr3

Parameters

Id	Type	Default	Range
k	integer	-	[0, \infty)

Super class

mlr3::Measure -> MeasureAIC

Methods

Public methods

• MeasureAIC$new()

• MeasureAIC$clone()

Inherited methods

• mlr3::Measure$aggregate()
• mlr3::Measure$format()
• mlr3::Measure$help()
• mlr3::Measure$print()
• mlr3::Measure$score()

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Method new()

Creates a new instance of this R6 class.

Usage

MeasureAIC$new()

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Method clone()

The objects of this class are cloneable with this method.

Usage

MeasureAIC$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

See Also

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

• Package 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:

  • mlr3proba for probabilistic supervised regression and survival analysis.

  • mlr3cluster for unsupervised clustering.

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

mlr3 documentation built on Sept. 14, 2025, 1:08 a.m.