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

Class MutualInformationFeatureSelection.MutualInformationStats<OUTCOME_T>

java.lang.Object

org.apache.ctakes.assertion.attributes.features.selection.MutualInformationFeatureSelection.MutualInformationStats<OUTCOME_T>

Enclosing class:

MutualInformationFeatureSelection<OUTCOME_T>

public static class MutualInformationFeatureSelection.MutualInformationStats<OUTCOME_T>
extends Object

Helper class for aggregating and computing mutual information statistics

Field Summary

Fields

Modifier and Type	Field and Description
protected com.google.common.collect.Table<String,OUTCOME_T,Integer>	classConditionalCounts
protected com.google.common.collect.Multiset<OUTCOME_T>	classCounts
protected double	smoothingCount

Constructor Summary

Constructors

Constructor and Description
MutualInformationStats(double smoothingCount)

Method Summary

Modifier and Type	Method and Description
com.google.common.base.Function<String,Double>	getScoreFunction(MutualInformationFeatureSelection.CombineScoreMethod combineScoreMethod)
double	mutualInformation(String featureName, OUTCOME_T outcome)
void	save(URI outputURI)
void	update(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 com.google.common.collect.Multiset<OUTCOME_T> classCounts

classConditionalCounts

protected com.google.common.collect.Table<String,OUTCOME_T,Integer> classConditionalCounts

smoothingCount

protected double smoothingCount

Constructor Detail

MutualInformationStats

public MutualInformationStats(double smoothingCount)

Method Detail

update

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

mutualInformation

public double mutualInformation(String featureName,
                                OUTCOME_T outcome)

save

public void save(URI outputURI)
          throws IOException

Throws:

IOException

getScoreFunction

public com.google.common.base.Function<String,Double> getScoreFunction(MutualInformationFeatureSelection.CombineScoreMethod combineScoreMethod)