edu.cmu.minorthird.classify.algorithms.linear
Class NegativeBinomialClassifier

java.lang.Object
  edu.cmu.minorthird.classify.BinaryClassifier
      edu.cmu.minorthird.classify.algorithms.linear.NegativeBinomialClassifier

All Implemented Interfaces:

Classifier, Visible, java.io.Serializable

public class NegativeBinomialClassifier
extends BinaryClassifier
implements Visible, java.io.Serializable

A generative Model for word-counts based on the Negative-Binomial Distribution.

Author:

Edoardo Airoldi Date: Jul 12, 2004

See Also:

Serialized Form

Field Summary

Fields inherited from class edu.cmu.minorthird.classify.BinaryClassifier

classifierLearner

Constructor Summary

NegativeBinomialClassifier()

Method Summary

java.lang.String	explain(Instance instance) Justify inner product of Negative-Binomial Classifier and instance weights.
java.util.Iterator<Feature>	featureIterator()
Explanation	getExplanation(Instance instance) Return an Explanation for the classification
double	score(Instance instance) Inner product of PoissonClassifier and instance weights.
void	setPmsNeg(Feature f, java.util.SortedMap<java.lang.String,java.lang.Double> tmap) Store parameters for f|negative
void	setPmsPos(Feature f, java.util.SortedMap<java.lang.String,java.lang.Double> tmap) Store parameters for f|positive
void	setPriorNeg(double k, double n, double prior, double pseudoCounts) Set the prior for negative documents
void	setPriorPos(double k, double n, double prior, double pseudoCounts) Set the prior for positive documents
void	setScale(double value) Set the scale term for the NB classifier to value
Viewer	toGUI() Create a view of this object
java.lang.String	toString()

Methods inherited from class edu.cmu.minorthird.classify.BinaryClassifier

classification, getClassifierLearner, setClassifierLearner

Methods inherited from class java.lang.Object

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

Constructor Detail

NegativeBinomialClassifier

public NegativeBinomialClassifier()

Method Detail

score

public double score(Instance instance)

Inner product of PoissonClassifier and instance weights.

Specified by:

score in class BinaryClassifier

explain

public java.lang.String explain(Instance instance)

Justify inner product of Negative-Binomial Classifier and instance weights.

Specified by:

explain in interface Classifier

getExplanation

public Explanation getExplanation(Instance instance)

Description copied from interface: Classifier

Return an Explanation for the classification

Specified by:

getExplanation in interface Classifier

setScale

public void setScale(double value)

Set the scale term for the NB classifier to value

setPriorPos

public void setPriorPos(double k,
                        double n,
                        double prior,
                        double pseudoCounts)

Set the prior for positive documents

setPriorNeg

public void setPriorNeg(double k,
                        double n,
                        double prior,
                        double pseudoCounts)

Set the prior for negative documents

setPmsNeg

public void setPmsNeg(Feature f,
                      java.util.SortedMap<java.lang.String,java.lang.Double> tmap)

Store parameters for f|negative

setPmsPos

public void setPmsPos(Feature f,
                      java.util.SortedMap<java.lang.String,java.lang.Double> tmap)

Store parameters for f|positive

featureIterator

public java.util.Iterator<Feature> featureIterator()

toGUI

public Viewer toGUI()

Description copied from interface: Visible

Create a view of this object

Specified by:

toGUI in interface Visible

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object