org.apache.lucene.document

Class FeatureField.SigmoidFunction

java.lang.Object

org.apache.lucene.document.FeatureField.FeatureFunction

org.apache.lucene.document.FeatureField.SigmoidFunction

Enclosing class:

FeatureField

static final class FeatureField.SigmoidFunction
extends FeatureField.FeatureFunction

Field Summary

Fields

Modifier and Type	Field and Description
private float	a
private float	pivot
private double	pivotPa

Constructor Summary

Constructors

Constructor and Description
SigmoidFunction(float pivot, float a)

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj)
(package private) Explanation	explain(java.lang.String field, java.lang.String feature, float weight, int freq)
int	hashCode()
(package private) Similarity.SimScorer	scorer(float weight)
java.lang.String	toString()

Methods inherited from class org.apache.lucene.document.FeatureField.FeatureFunction

rewrite

Methods inherited from class java.lang.Object

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

Field Detail

pivot

private final float pivot

a

private final float a

pivotPa

private final double pivotPa

Constructor Detail

SigmoidFunction

SigmoidFunction(float pivot,
                float a)

Method Detail

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

scorer

Similarity.SimScorer scorer(float weight)

Specified by:

scorer in class FeatureField.FeatureFunction

explain

Explanation explain(java.lang.String field,
                    java.lang.String feature,
                    float weight,
                    int freq)

Specified by:

explain in class FeatureField.FeatureFunction