Package com.namsor.oss.classify.bayes

Class AbstractNaiveBayesClassifierImpl

java.lang.Object

com.namsor.oss.classify.bayes.AbstractNaiveBayesImpl

com.namsor.oss.classify.bayes.AbstractNaiveBayesClassifierImpl

All Implemented Interfaces:

INaiveBayesClassifier

Direct Known Subclasses:

AbstractNaiveBayesClassifierLevelDBImpl, AbstractNaiveBayesClassifierMapImpl, AbstractNaiveBayesClassifierRocksDBImpl

public abstract class AbstractNaiveBayesClassifierImpl
extends AbstractNaiveBayesImpl
implements INaiveBayesClassifier

A simple, scalable Naive Bayes Classifier, based on a key-value store (in memory, or disk-based)

Author:

elian carsenat, NamSor SAS

Field Summary

Fields

Modifier and Type	Field	Description
protected Comparator<IClassProbability>	orderByProba

Constructor Summary

Constructors

Constructor	Description
AbstractNaiveBayesClassifierImpl(String classifierName, String[] categories)

Method Summary

Modifier and Type	Method	Description
String[]	getCategories()	This classifier has an immutable list of categories
String	getClassifierName()
void	learn(String category, Map<String,String> features)	Learn from features
protected IClassProbability[]	likelihoodsToProbas(double[] likelyhood, double likelyhoodTot)

Methods inherited from class com.namsor.oss.classify.bayes.AbstractNaiveBayesImpl

pathCategory, pathCategoryFeatureKey, pathCategoryFeatureKeyValue, pathFeatureKey, pathFeatureKeyCountValueTypes, pathFeatureKeyValue, pathGlobal, pathGlobalCountCategories

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.namsor.oss.classify.bayes.INaiveBayesClassifier

classify, dbClose, dbCloseAndDestroy, dbSize, dumpDb, learn

Field Detail

orderByProba

protected final Comparator<IClassProbability> orderByProba

Constructor Detail

AbstractNaiveBayesClassifierImpl

public AbstractNaiveBayesClassifierImpl(String classifierName,
                                        String[] categories)

Method Detail

getClassifierName

public String getClassifierName()

Returns:

the classifierName

getCategories

public String[] getCategories()

Description copied from interface: INaiveBayesClassifier

This classifier has an immutable list of categories

Specified by:

getCategories in interface INaiveBayesClassifier

Returns:

the categories

learn

public void learn(String category,
                  Map<String,String> features)
           throws ClassifyException

Description copied from interface: INaiveBayesClassifier

Learn from features

Specified by:

learn in interface INaiveBayesClassifier

Parameters:

category - The category

features - The features

Throws:

ClassifyException - The classification error and cause

likelihoodsToProbas

protected IClassProbability[] likelihoodsToProbas(double[] likelyhood,
                                                  double likelyhoodTot)