Function reference • mlrCPO

All functions
`CPO`	Composable Preprocessing Operators
`CPOConstructor`	Constructor for CPO Objects
`CPOLearner`	CPO Learner Object
`retrafo()` `inverter()` `retrafo<-`() `inverter<-`()	Get the Retransformation or Inversion Function from a Resulting Object
`NULLCPO`	CPO Composition Neutral Element
`applyCPO()`	Apply a CPO to Data
`as.list(<CPOPrimitive>)` `as.list(<CPOTrained>)`	Split a Pipeline into Its Constituents
`attachCPO()`	Attach a CPO to a Learner
`clearRI()`	Clear Retrafo and Inverter Attributes
`composeCPO()`	CPO Composition
`covrTraceCPOs()`	Add 'covr' coverage to CPOs
`cpoApplyFun()`	Apply a Function Element-Wise
`cpoApplyFunRegrTarget()`	Transform a Regression Target Variable
`cpoAsNumeric()`	Convert All Features to Numerics
`cpoCache()`	Caches the Result of CPO Transformations
`cpoCbind()`	“cbind” the Result of Multiple CPOs
`cpoCollapseFact()`	Compine Rare Factors
`cpoDropConstants()`	Drop Constant or Near-Constant Features
`cpoDummyEncode()`	CPO Dummy Encoder
`cpoFilterAnova()`	Filter Features: “anova.test”
`cpoFilterCarscore()`	Filter Features: “carscore”
`cpoFilterChiSquared()`	Filter Features: “chi.squared”
`cpoFilterFeatures()`	Filter Features by Thresholding Filter Values
`cpoFilterGainRatio()`	Filter Features: “gain.ratio”
`cpoFilterInformationGain()`	Filter Features: “information.gain”
`cpoFilterKruskal()`	Filter Features: “kruskal.test”
`cpoFilterLinearCorrelation()`	Filter Features: “linear.correlation”
`cpoFilterMrmr()`	Filter Features: “mrmr”
`cpoFilterOneR()`	Filter Features: “oneR”
`cpoFilterPermutationImportance()`	Filter Features: “permutation.importance”
`cpoFilterRankCorrelation()`	Filter Features: “rank.correlation”
`cpoFilterRelief()`	Filter Features: “relief”
`cpoFilterRfCImportance()`	Filter Features: “cforest.importance”
`cpoFilterRfImportance()`	Filter Features: “randomForest.importance”
`cpoFilterRfSRCImportance()`	Filter Features: “randomForestSRC.rfsrc”
`cpoFilterRfSRCMinDepth()`	Filter Features: “randomForestSRC.var.select”
`cpoFilterSymmetricalUncertainty()`	Filter Features: “symmetrical.uncertainty”
`cpoFilterUnivariate()`	Filter Features: “univariate.model.score”
`cpoFilterVariance()`	Filter Features: “variance”
`cpoFixFactors()`	Clean Up Factorial Features
`cpoIca()`	Construct a CPO for ICA Preprocessing
`cpoImpactEncodeClassif()`	Impact Encoding
`cpoImpactEncodeRegr()`	Impact Encoding
`cpoImpute()` `cpoImputeAll()`	Impute and Re-Impute Data
`cpoImputeConstant()`	Perform Imputation with Constant Value
`cpoImputeHist()`	Perform Imputation with Random Values
`cpoImputeLearner()`	Perform Imputation with an `mlr` `Learner`
`cpoImputeMax()`	Perform Imputation with Multiple of Minimum
`cpoImputeMean()`	Perform Imputation with Mean Value
`cpoImputeMedian()`	Perform Imputation with Median Value
`cpoImputeMin()`	Perform Imputation with Multiple of Minimum
`cpoImputeMode()`	Perform Imputation with Mode Value
`cpoImputeNormal()`	Perform Imputation with Normally Distributed Random Values
`cpoImputeUniform()`	Perform Imputation with Uniformly Random Values
`cpoLogTrafoRegr()`	Log-Transform a Regression Target Variable.
`cpoMakeCols()` `cpoAddCols()`	Create Columns from Expressions
`cpoMissingIndicators()`	Convert Data into Factors Indicating Missing Data
`cpoModelMatrix()`	Create a “Model Matrix” from the Data Given a Formula
`cpoOversample()` `cpoUndersample()`	Over- or Undersample Binary Classification Tasks
`cpoPca()`	Construct a CPO for PCA Preprocessing
`cpoProbEncode()`	Probability Encoding
`cpoQuantileBinNumerics()`	Split Numeric Features into Quantile Bins
`cpoRegrResiduals()`	Train a Model on a Task and Return the Residual Task
`cpoResponseFromSE()`	Use the “se” `predict.type` for “response” Prediction
`cpoSample()`	Sample Data from a Task
`cpoScale()`	Construct a CPO for Scaling / Centering
`cpoScaleMaxAbs()`	Max Abs Scaling CPO
`cpoScaleRange()`	Range Scaling CPO
`cpoSelect()` `cpoSelectFreeProperties()`	Drop All Columns Except Certain Selected Ones from Data
`cpoSmote()`	Perform SMOTE Oversampling for Binary Classification
`cpoSpatialSign()`	Scale Rows to Unit Length
`cpoTransformParams()`	Transform CPO Hyperparameters
`cpoWrap()` `cpoWrapRetrafoless()`	CPO Wrapper
`discrete()`	defined to avoid problems with the static type checker
`funct()`	defined to avoid problems with the static type checker
`getCPOAffect()`	Get the Selection Arguments for Affected CPOs
`getCPOClass()`	Get the CPO Class
`getCPOConstructor()`	Get the CPOConstructor Used to Create a CPO Object
`getCPOId()`	Get the ID of a CPO Object
`getCPOName()`	Get the CPO Object's Name
`getCPOOperatingType()`	Determine the Operating Type of the CPO
`getCPOPredictType()`	Get the CPO `predict.type`
`getCPOProperties()`	Get the Properties of the Given CPO Object
`getCPOTrainedCPO()`	Get CPO Used to Train a Retrafo / Inverter
`getCPOTrainedCapability()`	Get the CPOTrained's Capabilities
`getCPOTrainedState()`	Get the Internal State of a CPORetrafo Object
`getLearnerBare()`	Get the Learner with the CPOs Removed
`getLearnerCPO()`	Get the CPO Associated with a Learner
`%>>%` `%<<%` `%<>>%` `%<<<%` `%>\|%` `%\|<%`	CPO Composition / Attachment / Application Operator
`identicalCPO()`	Check Whether Two CPO are Fundamentally the Same
`invert()`	Invert Target Preprocessing
`is.inverter()`	Check CPOInverter
`is.nullcpo()`	Check for NULLCPO
`is.retrafo()`	Check CPORetrafo
`listCPO()`	List all Built-in CPOs
`makeCPO()` `makeCPOExtendedTrafo()` `makeCPORetrafoless()` `makeCPOTargetOp()` `makeCPOExtendedTargetOp()`	Create a Custom CPO Constructor
`makeCPOCase()` `cpoCase()`	Build Data-Dependent CPOs
`makeCPOMultiplex()` `cpoMultiplex()`	CPO Multiplexer
`makeCPOTrainedFromState()`	Create a CPOTrained with Given Internal State
`mlrCPO-package`	Composable Preprocessing Operators
`nullToNullcpo()`	NULL to NULLCPO
`nullcpoToNull()`	NULLCPO to NULL
`pSS()` `pSSLrn()`	Turn the argument list into a `ParamSet`
`pipeCPO()`	Turn a `list` of CPOs into a Single Chained One
`print(<CPOConstructor>)` `print(<CPO>)` `print(<CPOTrained>)` `!`(<CPOConstructor>) `!`(<CPO>) `!`(<CPOTrained>)	Print CPO Objects
`setCPOId()`	Set the ID of a CPO Object
`untyped()`	defined to avoid problems with the static type checker

Reference

All functions

Contents