com.cloudera.oryx.app.rdf.decision

Class NumericDecision

java.lang.Object

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

com.cloudera.oryx.app.rdf.decision.NumericDecision

All Implemented Interfaces:

Serializable

public final class NumericDecision
extends Decision

Represents a decision over a numeric feature. Decisions are defined simply by a threshold value; the decision is positive if the feature's value is greater than or equal to this decision's threshold value.

See Also:

CategoricalDecision, Serialized Form

Constructor Summary

Constructors

Constructor and Description
NumericDecision(int featureNumber, double threshold, boolean defaultDecision)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
boolean	getDefaultDecision()
double	getThreshold()
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

NumericDecision

public NumericDecision(int featureNumber,
                       double threshold,
                       boolean defaultDecision)

Method Detail

getThreshold

public double getThreshold()

Returns:

decision threshold; feature values greater than or equal are considered positive

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

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