hex.ensemble

Class StackedEnsemble

java.lang.Object

water.Iced

hex.ModelBuilder<StackedEnsembleModel,StackedEnsembleModel.StackedEnsembleParameters,StackedEnsembleModel.StackedEnsembleOutput>

hex.ensemble.StackedEnsemble

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, java.lang.Cloneable, water.Freezable

public class StackedEnsemble
extends hex.ModelBuilder<StackedEnsembleModel,StackedEnsembleModel.StackedEnsembleParameters,StackedEnsembleModel.StackedEnsembleOutput>

An ensemble of other models, created by stacking with the SuperLearner algorithm or a variation.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class hex.ModelBuilder

hex.ModelBuilder.BuilderVisibility, hex.ModelBuilder.Driver, hex.ModelBuilder.FilterCols, hex.ModelBuilder.ModelTrainingCoordinator, hex.ModelBuilder.ValidationMessage

Field Summary

Fields

Modifier and Type	Field and Description
protected StackedEnsembleModel	_model

Fields inherited from class hex.ModelBuilder

_coordinator, _desc, _eventPublisher, _fold, _input_parms, _job, _messages, _nclass, _offset, _orig_projection_array, _origDomains, _origNames, _origTrain, _parms, _priorClassDist, _removedCols, _response, _result, _startUpOnceModelBuilder, _train, _treatment, _valid, _vresponse, _weights

Constructor Summary

Constructors

Constructor and Description
StackedEnsemble(boolean startup_once)
StackedEnsemble(StackedEnsembleModel.StackedEnsembleParameters parms)

Method Summary

Modifier and Type	Method and Description
hex.ModelBuilder.BuilderVisibility	builderVisibility()
hex.ModelCategory[]	can_build()
boolean	haveMojo()
protected void	ignoreBadColumns(int npredictors, boolean expensive)
void	init(boolean expensive)
boolean	isSupervised()
int	nclasses()
protected hex.ensemble.StackedEnsemble.StackedEnsembleDriver	trainModelImpl()

Methods inherited from class hex.ModelBuilder

algoName, algos, canLearnFromNAs, checkCustomMetricForEarlyStopping, checkDistributions, checkEarlyStoppingReproducibility, checkMemoryFootPrint_impl, checkMemoryFootPrint, checkResponseVariable, clearInitState, clearValidationErrors, computeCrossValidation, computePriorClassDistribution, cv_buildModels, cv_canBuildMainModelInParallel, cv_computeAndSetOptimalParameters, cv_initStoppingParameters, cv_mainModelScores, cv_makeAggregateModelMetrics, cv_scoreCVModels, cv_updateOptimalParameters, defaultKey, desiredChunks, dest, error_count, error, get, getMessagesByFieldAndSeverity, getName, getSysProperty, getToEigenVec, hasFoldCol, hasOffsetCol, hasTreatmentCol, hasWeightCol, havePojo, hide, ignoreConstColumns, ignoreInvalidColumns, ignoreStringColumns, ignoreUuidColumns, info, init_adaptFrameToTrain, init_getNClass, initWorkspace, isClassifier, isResponseOptional, isStopped, javaName, logMe, make, make, make, makeCVMetrics, makeCVModelBuilder, makeParameters, makePojoWriter, message, nFoldCV, nFoldWork, nModelsInParallel, nModelsInParallel, nModelsInParallel, numSpecialCols, paramName, raiseReproducibilityWarning, rebalance, remainingTimeSecs, response, schemaDirectory, separateFeatureVecs, setMaxRuntimeSecsForMainModel, setTrain, setValid, shouldReorder, smallDataSize, stop_requested, timeout, train, trainModel, trainModel, trainModelNested, trainModelNested, trainModelOnH2ONode, valid, validateBinaryResponse, validateStoppingMetric, validationErrors, validationWarnings, vresponse, warn

Methods inherited from class water.Iced

asBytes, clone, copyOver, frozenType, read, readExternal, readJSON, reloadFromBytes, toJsonBytes, toJsonString, write, writeExternal, writeJSON

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

_model

protected StackedEnsembleModel _model

Constructor Detail

StackedEnsemble

public StackedEnsemble(StackedEnsembleModel.StackedEnsembleParameters parms)

StackedEnsemble

public StackedEnsemble(boolean startup_once)

Method Detail

can_build

public hex.ModelCategory[] can_build()

Specified by:

can_build in class hex.ModelBuilder<StackedEnsembleModel,StackedEnsembleModel.StackedEnsembleParameters,StackedEnsembleModel.StackedEnsembleOutput>

builderVisibility

public hex.ModelBuilder.BuilderVisibility builderVisibility()

Overrides:

builderVisibility in class hex.ModelBuilder<StackedEnsembleModel,StackedEnsembleModel.StackedEnsembleParameters,StackedEnsembleModel.StackedEnsembleOutput>

isSupervised

public boolean isSupervised()

Specified by:

isSupervised in class hex.ModelBuilder<StackedEnsembleModel,StackedEnsembleModel.StackedEnsembleParameters,StackedEnsembleModel.StackedEnsembleOutput>

ignoreBadColumns

protected void ignoreBadColumns(int npredictors,
                                boolean expensive)

Overrides:

ignoreBadColumns in class hex.ModelBuilder<StackedEnsembleModel,StackedEnsembleModel.StackedEnsembleParameters,StackedEnsembleModel.StackedEnsembleOutput>

trainModelImpl

protected hex.ensemble.StackedEnsemble.StackedEnsembleDriver trainModelImpl()

Specified by:

trainModelImpl in class hex.ModelBuilder<StackedEnsembleModel,StackedEnsembleModel.StackedEnsembleParameters,StackedEnsembleModel.StackedEnsembleOutput>

haveMojo

public boolean haveMojo()

Overrides:

haveMojo in class hex.ModelBuilder<StackedEnsembleModel,StackedEnsembleModel.StackedEnsembleParameters,StackedEnsembleModel.StackedEnsembleOutput>

nclasses

public int nclasses()

Overrides:

nclasses in class hex.ModelBuilder<StackedEnsembleModel,StackedEnsembleModel.StackedEnsembleParameters,StackedEnsembleModel.StackedEnsembleOutput>

init

public void init(boolean expensive)

Overrides:

init in class hex.ModelBuilder<StackedEnsembleModel,StackedEnsembleModel.StackedEnsembleParameters,StackedEnsembleModel.StackedEnsembleOutput>