org.apache.spark.ml.classification

Class DecisionTreeClassifier

Object

org.apache.spark.ml.PipelineStage

org.apache.spark.ml.Estimator<M>

org.apache.spark.ml.Predictor<Vector,DecisionTreeClassifier,DecisionTreeClassificationModel>

org.apache.spark.ml.classification.DecisionTreeClassifier

All Implemented Interfaces:

java.io.Serializable, Logging, Params

public final class DecisionTreeClassifier
extends Predictor<Vector,DecisionTreeClassifier,DecisionTreeClassificationModel>

:: Experimental :: Decision tree learning algorithm for classification. It supports both binary and multiclass labels, as well as both continuous and categorical features.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
DecisionTreeClassifier()
DecisionTreeClassifier(String uid)

Method Summary

Methods

Modifier and Type	Method and Description
DecisionTreeClassifier	setCacheNodeIds(boolean value)
DecisionTreeClassifier	setCheckpointInterval(int value)
DecisionTreeClassifier	setImpurity(String value)
DecisionTreeClassifier	setMaxBins(int value)
DecisionTreeClassifier	setMaxDepth(int value)
DecisionTreeClassifier	setMaxMemoryInMB(int value)
DecisionTreeClassifier	setMinInfoGain(double value)
DecisionTreeClassifier	setMinInstancesPerNode(int value)
static String[]	supportedImpurities() Accessor for supported impurities: entropy, gini
String	uid()
StructType	validateAndTransformSchema(StructType schema, boolean fitting, DataType featuresDataType) Validates and transforms the input schema with the provided param map.

Methods inherited from class org.apache.spark.ml.Predictor

copy, fit, setFeaturesCol, setLabelCol, setPredictionCol, transformSchema

Methods inherited from class org.apache.spark.ml.Estimator

fit, fit, fit, fit

Methods inherited from class Object

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

Methods inherited from interface org.apache.spark.ml.param.Params

clear, copyValues, defaultParamMap, explainParam, explainParams, extractParamMap, extractParamMap, get, getDefault, getOrDefault, getParam, hasDefault, hasParam, isDefined, isSet, paramMap, params, set, set, set, setDefault, setDefault, setDefault, shouldOwn, validateParams

Methods inherited from interface org.apache.spark.Logging

initializeIfNecessary, initializeLogging, isTraceEnabled, log_, log, logDebug, logDebug, logError, logError, logInfo, logInfo, logName, logTrace, logTrace, logWarning, logWarning

Constructor Detail

DecisionTreeClassifier

public DecisionTreeClassifier(String uid)

DecisionTreeClassifier

public DecisionTreeClassifier()

Method Detail

supportedImpurities

public static final String[] supportedImpurities()

Accessor for supported impurities: entropy, gini

uid

public String uid()

setMaxDepth

public DecisionTreeClassifier setMaxDepth(int value)

setMaxBins

public DecisionTreeClassifier setMaxBins(int value)

setMinInstancesPerNode

public DecisionTreeClassifier setMinInstancesPerNode(int value)

setMinInfoGain

public DecisionTreeClassifier setMinInfoGain(double value)

setMaxMemoryInMB

public DecisionTreeClassifier setMaxMemoryInMB(int value)

setCacheNodeIds

public DecisionTreeClassifier setCacheNodeIds(boolean value)

setCheckpointInterval

public DecisionTreeClassifier setCheckpointInterval(int value)

setImpurity

public DecisionTreeClassifier setImpurity(String value)

validateAndTransformSchema

public StructType validateAndTransformSchema(StructType schema,
                                    boolean fitting,
                                    DataType featuresDataType)

Validates and transforms the input schema with the provided param map.

Parameters:

schema - input schema

fitting - whether this is in fitting

featuresDataType - SQL DataType for FeaturesType. E.g., VectorUDT for vector features.

Returns:

output schema