org.apache.mahout.vectorizer

Class TFIDF

java.lang.Object

org.apache.mahout.vectorizer.TFIDF

All Implemented Interfaces:

Weight

public class TFIDF
extends Object
implements Weight

Constructor Summary

Constructors

Constructor and Description
TFIDF()

Method Summary

Methods

Modifier and Type	Method and Description
double	calculate(int tf, int df, int length, int numDocs) Experimental

Methods inherited from class java.lang.Object

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

Constructor Detail

TFIDF

public TFIDF()

Method Detail

calculate

public double calculate(int tf,
               int df,
               int length,
               int numDocs)

Description copied from interface: Weight

Experimental

Specified by:

calculate in interface Weight

Parameters:

tf - term freq

df - doc freq

length - Length of the document

numDocs - the total number of docs

Returns:

The weight