Package org.carrot2.text.vsm

Class LogTfIdfTermWeighting

java.lang.Object

org.carrot2.attrs.AttrComposite

org.carrot2.text.vsm.LogTfIdfTermWeighting

All Implemented Interfaces:

AcceptingVisitor, TermWeighting

public class LogTfIdfTermWeighting
extends AttrComposite
implements TermWeighting

Calculates term-document matrix element values based on Log Inverse Term Frequency.

Field Summary

Fields inherited from class org.carrot2.attrs.AttrComposite

attributes

Constructor Summary

Constructors

Constructor	Description
LogTfIdfTermWeighting()

Method Summary

Modifier and Type	Method	Description
double	calculateTermWeight(int termFrequency, int documentFrequency, int documentCount)	Calculates the weight of a term for a single document.

Methods inherited from class org.carrot2.attrs.AttrComposite

accept

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.carrot2.attrs.AcceptingVisitor

accept

Constructor Details

LogTfIdfTermWeighting

public LogTfIdfTermWeighting()

Method Details

calculateTermWeight

public double calculateTermWeight(int termFrequency, int documentFrequency, int documentCount)

Description copied from interface: TermWeighting

Calculates the weight of a term for a single document.

Specified by:

calculateTermWeight in interface TermWeighting

Parameters:

termFrequency - frequency of the term in the document

documentFrequency - the number of documents containing the term

documentCount - total number of documents