Building Blocks

Task

Task Class

Learner

Learner Class

Measure

Measure Class

Resampling

Resampling Class

Prediction

Abstract Prediction Object

Data Backends

DataBackend

DataBackend

DataBackendDataTable

DataBackend for data.table

DataBackendMatrix

DataBackend for Matrix

as_data_backend()

Create a Data Backend

Classification

TaskClassif

Classification Task

LearnerClassif

Classification Learner

MeasureClassif

Classification Measure

PredictionClassif

Prediction Object for Classification

Regression

TaskRegr

Regression Task

LearnerRegr

Regression Learner

MeasureRegr

Regression Measure

PredictionRegr

Prediction Object for Regression

Tasks

mlr_tasks

Dictionary of Tasks

mlr_tasks_boston_housing

Boston Housing Regression Task

mlr_tasks_breast_cancer

Wisconsin Breast Cancer Classification Task

mlr_tasks_german_credit

German Credit Classification Task

mlr_tasks_iris

Iris Classification Task

mlr_tasks_mtcars

Motor Trend Regression Task

mlr_tasks_pima

Pima Indian Diabetes Classification Task

mlr_tasks_sonar

Sonar Classification Task

mlr_tasks_spam

Spam Classification Task

mlr_tasks_wine

Wine Classification Task

mlr_tasks_zoo

Zoo Classification Task

Task Generators

TaskGenerator

TaskGenerator Class

mlr_task_generators

Dictionary of Task Generators

mlr_task_generators_2dnormals

2D Normals Classification Task Generator

mlr_task_generators_cassini

Cassini Classification Task Generator

mlr_task_generators_circle

Circle Classification Task Generator

mlr_task_generators_friedman1

Friedman1 Regression Task Generator

mlr_task_generators_moons

Moons Classification Task Generator

mlr_task_generators_simplex

Simplex Classification Task Generator

mlr_task_generators_smiley

Smiley Classification Task Generator

mlr_task_generators_spirals

Spiral Classification Task Generator

mlr_task_generators_xor

XOR Classification Task Generator

Learners

mlr_learners

Dictionary of Learners

mlr_learners_classif.debug

Classification Learner for Debugging

mlr_learners_classif.featureless

Featureless Classification Learner

mlr_learners_classif.rpart

Classification Tree Learner

mlr_learners_regr.featureless

Featureless Regression Learner

mlr_learners_regr.rpart

Regression Tree Learner

Measures

mlr_measures

Dictionary of Performance Measures

mlr_measures_classif.acc

Classification Accuracy

mlr_measures_classif.auc

Area Under the ROC Curve

mlr_measures_classif.bacc

Balanced Accuracy

mlr_measures_classif.bbrier

Binary Brier Score

mlr_measures_classif.ce

Classification Error

mlr_measures_classif.costs

Cost-sensitive Classification Measure

mlr_measures_classif.dor

Diagnostic Odds Ratio

mlr_measures_classif.fbeta

F-beta Score

mlr_measures_classif.fdr

False Discovery Rate

mlr_measures_classif.fn

False Negatives

mlr_measures_classif.fnr

False Negative Rate

mlr_measures_classif.fomr

False Omission Rate

mlr_measures_classif.fp

False Positives

mlr_measures_classif.fpr

False Positive Rate

mlr_measures_classif.logloss

Log Loss

mlr_measures_classif.mbrier

Multiclass Brier Score

mlr_measures_classif.mcc

Matthews Correlation Coefficient

mlr_measures_classif.npv

Negative Predictive Value

mlr_measures_classif.ppv

Positive Predictive Value

mlr_measures_classif.precision

Positive Predictive Value

mlr_measures_classif.recall

True Positive Rate

mlr_measures_classif.sensitivity

True Positive Rate

mlr_measures_classif.specificity

True Negative Rate

mlr_measures_classif.tn

True Negatives

mlr_measures_classif.tnr

True Negative Rate

mlr_measures_classif.tp

True Positives

mlr_measures_classif.tpr

True Positive Rate

mlr_measures_debug

Debug Measure

mlr_measures_elapsed_time

Elapsed Time Measure

mlr_measures_oob_error

Out-of-bag Error Measure

mlr_measures_regr.bias

Bias

mlr_measures_regr.ktau

Kendall's tau

mlr_measures_regr.mae

Mean Absolute Errors

mlr_measures_regr.mape

Mean Absolute Percent Error

mlr_measures_regr.maxae

Max Absolute Error

mlr_measures_regr.medae

Median Absolute Errors

mlr_measures_regr.medse

Median Squared Error

mlr_measures_regr.mse

Mean Squared Error

mlr_measures_regr.msle

Mean Squared Log Error

mlr_measures_regr.pbias

Percent Bias

mlr_measures_regr.rae

Relative Absolute Error

mlr_measures_regr.rmse

Root Mean Squared Error

mlr_measures_regr.rmsle

Root Mean Squared Log Error

mlr_measures_regr.rrse

Root Relative Squared Error

mlr_measures_regr.rse

Relative Squared Error

mlr_measures_regr.rsq

R Squared

mlr_measures_regr.sae

Sum of Absolute Errors

mlr_measures_regr.smape

Symmetric Mean Absolute Percent Error

mlr_measures_regr.srho

Spearman's rho

mlr_measures_regr.sse

Sum of Squared Errors

mlr_measures_selected_features

Selected Features Measure

default_measures()

Get a Default Measure

Resampling Strategies

mlr_resamplings

Dictionary of Resampling Strategies

mlr_resamplings_bootstrap

Bootstrap Resampling

mlr_resamplings_custom

Custom Resampling

mlr_resamplings_cv

Cross Validation Resampling

mlr_resamplings_holdout

Holdout Resampling

mlr_resamplings_insample

Insample Resampling

mlr_resamplings_loo

Leave-One-Out Cross Validation

mlr_resamplings_repeated_cv

Repeated Cross Validation Resampling

mlr_resamplings_subsampling

Subsampling Resampling

Resample

resample()

Resample a Learner on a Task

ResampleResult

Container for Results of resample()

Benchmarking

benchmark()

Benchmark Multiple Learners on Multiple Tasks

benchmark_grid()

Generate a Benchmark Grid Design

BenchmarkResult

Container for Benchmarking Results

as_benchmark_result()

Convert to BenchmarkResult

Extending mlr3

assert_backend() assert_task() assert_tasks() assert_learner() assert_learners() assert_learnable() assert_measure() assert_measures() assert_resampling() assert_resamplings() assert_prediction() assert_resample_result() assert_benchmark_result() assert_row_ids()

Assertion for mlr3 Objects

as_task() as_tasks() as_learner() as_learners() as_resampling() as_resamplings() as_measure() as_measures()

Object Coercion

mlr_reflections

Reflections for mlr3

tsk() tsks() tgen() tgens() lrn() lrns() rsmp() rsmps() msr() msrs()

Syntactic Sugar for Object Construction

predict(<Learner>)

Predict Method for Learners