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mlrCPO  

Composable Preprocessing Operators and Pipelines for Machine Learning
View on CRAN: Click here


Download and install mlrCPO package within the R console
Install from CRAN:
install.packages("mlrCPO")

Install from Github:
library("remotes")
install_github("cran/mlrCPO")

Install by package version:
library("remotes")
install_version("mlrCPO", "0.3.8")



Attach the package and use:
library("mlrCPO")
Maintained by
Martin Binder
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2018-04-05
Latest Update: 2025-06-16
Description:
Toolset that enriches 'mlr' with a diverse set of preprocessing operators. Composable Preprocessing Operators ("CPO"s) are first-class R objects that can be applied to data.frames and 'mlr' "Task"s to modify data, can be attached to 'mlr' "Learner"s to add preprocessing to machine learning algorithms, and can be composed to form preprocessing pipelines.
How to cite:
Martin Binder (2018). mlrCPO: Composable Preprocessing Operators and Pipelines for Machine Learning. R package version 0.3.8, https://cran.r-project.org/web/packages/mlrCPO. Accessed 11 Aug. 2026.
Previous versions and publish date:
(2026-07-09 06:31), 0.3.2 (2018-04-05 18:24), 0.3.3 (2018-04-21 23:50), 0.3.4-1 (2018-10-02 22:20), 0.3.4-2 (2019-01-10 21:30), 0.3.4-3 (2019-05-11 21:40), 0.3.4-4 (2019-08-08 00:40), 0.3.4 (2018-07-03 00:00), 0.3.6 (2020-04-06 11:00), 0.3.7-1 (2021-01-11 09:00), 0.3.7-2 (2021-02-24 23:40), 0.3.7-3 (2021-11-10 08:50), 0.3.7-4 (2022-07-20 16:00), 0.3.7-5 (2022-10-19 01:52), 0.3.7-6 (2022-11-17 19:10), 0.3.7-7 (2024-02-20 12:00), 0.3.7 (2020-11-15 21:30)
Other packages that cited mlrCPO R package
View mlrCPO citation profile
Other R packages that mlrCPO depends, imports, suggests or enhances
Complete documentation for mlrCPO
Functions, R codes and Examples using the mlrCPO R package
Some associated functions: CPO . CPOConstructor . CPOLearner . CPOTrained . NULLCPO . applyCPO . as.list.CPO . attachCPO . clearRI . composeCPO . covrTraceCPOs . cpoApplyFun . cpoApplyFunRegrTarget . cpoAsNumeric . cpoCache . cpoCbind . cpoCollapseFact . cpoDropConstants . cpoDropMostlyConstants . cpoDummyEncode . cpoFilterAnova . cpoFilterCarscore . cpoFilterChiSquared . cpoFilterFeatures . cpoFilterGainRatio . cpoFilterInformationGain . cpoFilterKruskal . cpoFilterLinearCorrelation . cpoFilterMrmr . cpoFilterOneR . cpoFilterPermutationImportance . cpoFilterRankCorrelation . cpoFilterRelief . cpoFilterRfCImportance . cpoFilterRfImportance . cpoFilterRfSRCImportance . cpoFilterRfSRCMinDepth . cpoFilterSymmetricalUncertainty . cpoFilterUnivariate . cpoFilterVariance . cpoFixFactors . cpoIca . cpoImpactEncodeClassif . cpoImpactEncodeRegr . cpoImpute . cpoImputeConstant . cpoImputeHist . cpoImputeLearner . cpoImputeMax . cpoImputeMean . cpoImputeMedian . cpoImputeMin . cpoImputeMode . cpoImputeNormal . cpoImputeUniform . cpoLogTrafoRegr . cpoMakeCols . cpoMissingIndicators . cpoModelMatrix . cpoOversample . cpoPca . cpoProbEncode . cpoQuantileBinNumerics . cpoRegrResiduals . cpoResponseFromSE . cpoSample . cpoScale . cpoScaleMaxAbs . cpoScaleRange . cpoSelect . cpoSmote . cpoSpatialSign . cpoTemplate . cpoTransformParams . cpoWrap . discrete . funct . getCPOAffect . getCPOClass . getCPOConstructor . getCPOId . getCPOName . getCPOOperatingType . getCPOPredictType . getCPOProperties . getCPOTrainedCPO . getCPOTrainedCapability . getCPOTrainedState . getLearnerBare . getLearnerCPO . grapes-greater-than-greater-than-grapes . identicalCPO . internal-grapes-greater-than-greater-than-grapes . invert . is.inverter . is.nullcpo . is.retrafo . listCPO . makeCPO . makeCPOCase . makeCPOMultiplex . makeCPOTrainedFromState . mlrCPO-package . nullToNullcpo . nullcpoToNull . pSS . pipeCPO . print.CPOConstructor . randomForestSRC_filters . setCPOId . untyped . 
Some associated R codes: CPOHelp.R . CPO_applyFun.R . CPO_asNumeric.R . CPO_cbind.R . CPO_collapseFact.R . CPO_dropConstants.R . CPO_dropMostlyConstants.R . CPO_encode.R . CPO_filterFeatures.R . CPO_fixFactors.R . CPO_ica.R . CPO_impute.R . CPO_makeCols.R . CPO_meta.R . CPO_missingIndicators.R . CPO_modelMatrix.R . CPO_pca.R . CPO_quantileBinNumerics.R . CPO_regrResiduals.R . CPO_responseFromSE.R . CPO_scale.R . CPO_scaleMaxAbs.R . CPO_scaleRange.R . CPO_select.R . CPO_smote.R . CPO_spatialSign.R . CPO_subsample.R . CPO_wrap.R . FormatCheck.R . NULLCPO.R . ParamSetSugar.R . RandomForestSRC.R . RetrafoState.R . attributes.R . auxhelp.R . auxiliary.R . callCPO.R . callInterface.R . composeProperties.R . doublecaret.R . fauxCPOConstructor.R . inverter.R . learner.R . listCPO.R . makeCPO.R . makeCPOHelp.R . operators.R . parameters.R . print.R . properties.R . zzz.R .  Full mlrCPO package functions and examples
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