com.cloudera.oryx.app.rdf.decision

Class CategoricalDecision

java.lang.Object

com.cloudera.oryx.app.rdf.decision.Decision

com.cloudera.oryx.app.rdf.decision.CategoricalDecision

All Implemented Interfaces:

Serializable

public final class CategoricalDecision
extends Decision

Represents a decision over a categorical feature. If the categorical feature takes on values from the set V = { v1, v2, ... } then the rule is defined by a subset of V. The decision evaluates as positive if an example's value for this feature is in the rule's subset.

See Also:

NumericDecision, Serialized Form

Constructor Summary

Constructors

Constructor and Description
CategoricalDecision(int featureNumber, BitSet activeCategoryEncodings, boolean defaultDecision)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
BitSet	getActiveCategoryEncodings()
boolean	getDefaultDecision()
FeatureType	getType()
int	hashCode()
boolean	isPositive(Example example)
String	toString()

Methods inherited from class com.cloudera.oryx.app.rdf.decision.Decision

getFeatureNumber

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

CategoricalDecision

public CategoricalDecision(int featureNumber,
                           BitSet activeCategoryEncodings,
                           boolean defaultDecision)

Method Detail

getDefaultDecision

public boolean getDefaultDecision()

Specified by:

getDefaultDecision in class Decision

Returns:

default decision -- true means positive -- when the Decision cannot be evaluated on an Example because the feature value it decides on is missing

getActiveCategoryEncodings

public BitSet getActiveCategoryEncodings()

isPositive

public boolean isPositive(Example example)

Specified by:

isPositive in class Decision

Parameters:

example - example to evaluate Decision on

Returns:

true iff the Decision is positive on this example

getType

public FeatureType getType()

Specified by:

getType in class Decision

Returns:

type of feature the Decision is over (a FeatureType)

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Specified by:

toString in class Decision