mark.nlp.weka
Class NaiveBayes

java.lang.Object
  |
  +--weka.classifiers.Classifier
        |
        +--mark.nlp.weka.NaiveBayes

All Implemented Interfaces:

java.lang.Cloneable, java.io.Serializable, weka.core.WeightedInstancesHandler

Direct Known Subclasses:

NBBernoulli, NBMultinomial

public abstract class NaiveBayes

extends weka.classifiers.Classifier

implements weka.core.WeightedInstancesHandler

A base class for weka NaiveBayes classifiers.

See Also:

Serialized Form

Field Summary

protected double[][]	fConditionals
protected int	fNumAtts
protected int	fNumCats
protected double[]	fPriors
protected static boolean	fSmooth
protected static boolean	fUsePriors

Constructor Summary

NaiveBayes()

Method Summary

void	buildClassifier(weka.core.Instances instances)
double	classifyInstance(weka.core.Instance instance) Calculates the most likely class for the given test instance.
protected abstract double	filterAttributeVal(double attVal)
protected abstract void	finishConditionals()
protected abstract void	finishScores(double[] scores, weka.core.Instance instance)

Methods inherited from class weka.classifiers.Classifier

forName, makeCopies

Methods inherited from class java.lang.Object

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

Field Detail

fSmooth

protected static final boolean fSmooth

See Also:

Constant Field Values

fUsePriors

protected static final boolean fUsePriors

See Also:

Constant Field Values

fConditionals

protected double[][] fConditionals

fPriors

protected double[] fPriors

fNumCats

protected int fNumCats

fNumAtts

protected int fNumAtts

Constructor Detail

NaiveBayes

public NaiveBayes()

Method Detail

filterAttributeVal

protected abstract double filterAttributeVal(double attVal)

finishConditionals

protected abstract void finishConditionals()

finishScores

protected abstract void finishScores(double[] scores,
                                     weka.core.Instance instance)
                              throws java.lang.Exception

java.lang.Exception

buildClassifier

public void buildClassifier(weka.core.Instances instances)
                     throws java.lang.Exception

Specified by:

buildClassifier in class weka.classifiers.Classifier

java.lang.Exception

classifyInstance

public double classifyInstance(weka.core.Instance instance)
                        throws java.lang.Exception

Calculates the most likely class for the given test instance.

Specified by:

classifyInstance in class weka.classifiers.Classifier

Parameters:

instance - the instance to be classified

Returns:

predicted predicted class.

Throws:

java.lang.Exception - if there is a problem generating the prediction