org.apache.ctakes.assertion.attributes.features.selection

Class Chi2FeatureSelection.Chi2Scorer<OUTCOME_T>

java.lang.Object

org.apache.ctakes.assertion.attributes.features.selection.Chi2FeatureSelection.Chi2Scorer<OUTCOME_T>

Enclosing class:

Chi2FeatureSelection<OUTCOME_T>

private static class Chi2FeatureSelection.Chi2Scorer<OUTCOME_T>
extends java.lang.Object

Helper class for aggregating and computing mutual Chi2 statistics

Field Summary

Fields

Modifier and Type	Field and Description
protected	classCounts
protected	featValueClassCount
private boolean	yates

Constructor Summary

Constructors

Constructor and Description
Chi2FeatureSelection.Chi2Scorer(boolean yate)

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Double	apply(java.lang.String featureName)
double	score(java.lang.String featureName)
void	update(java.lang.String featureName, OUTCOME_T outcome, int occurrences)

Methods inherited from class java.lang.Object

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

Field Detail

classCounts

protected  classCounts

featValueClassCount

protected  featValueClassCount

yates

private boolean yates

Constructor Detail

Chi2FeatureSelection.Chi2Scorer

public Chi2FeatureSelection.Chi2Scorer(boolean yate)

Method Detail

update

public void update(java.lang.String featureName,
          OUTCOME_T outcome,
          int occurrences)

apply

public java.lang.Double apply(java.lang.String featureName)

score

public double score(java.lang.String featureName)