edu.cmu.minorthird.classify
Class BasicFeatureIndex

java.lang.Object
  edu.cmu.minorthird.classify.DatasetIndex
      edu.cmu.minorthird.classify.BasicFeatureIndex

All Implemented Interfaces:

FeatureIndex, java.io.Serializable

public class BasicFeatureIndex
extends DatasetIndex
implements FeatureIndex

Author:

Edoardo Airoldi Date: Nov 24, 2003

See Also:

Serialized Form

Constructor Summary

BasicFeatureIndex()

BasicFeatureIndex(Dataset data)

Method Summary

double	getCounts(Feature f, int i) Get counts of feature f in i-th example containing feature f
double	getCounts(Feature f, java.lang.String label) Get counts of feature f in examples with label l
double	getDocCounts(Feature f, java.lang.String label) Get number of documents which contain feature f with label l
static void	main(java.lang.String[] args)
int	size(Feature f, java.lang.String label) Number of examples with label l containing non-zero values for feature f.
java.lang.String	toString()

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

addExample, averageFeaturesPerExample, classIndex, featureIndex, featureIterator, getExample, getExample, getNeighbors, numberOfFeatures, size, size

Methods inherited from class java.lang.Object

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

Methods inherited from interface edu.cmu.minorthird.classify.FeatureIndex

addExample, featureIterator, getExample, getNeighbors, size

Constructor Detail

BasicFeatureIndex

public BasicFeatureIndex()

BasicFeatureIndex

public BasicFeatureIndex(Dataset data)

Method Detail

size

public int size(Feature f,
                java.lang.String label)

Number of examples with label l containing non-zero values for feature f.

getCounts

public double getCounts(Feature f,
                        int i)

Get counts of feature f in i-th example containing feature f

Specified by:

getCounts in interface FeatureIndex

getCounts

public double getCounts(Feature f,
                        java.lang.String label)

Get counts of feature f in examples with label l

getDocCounts

public double getDocCounts(Feature f,
                           java.lang.String label)

Get number of documents which contain feature f with label l

toString

public java.lang.String toString()

Overrides:

toString in class DatasetIndex

main

public static void main(java.lang.String[] args)