de.aitools.ir.retrievalmodels.representer
Class TFPDF

java.lang.Object
  de.aitools.ir.retrievalmodels.representer.AbstractRepresenter<java.lang.String,Vector>
      de.aitools.ir.retrievalmodels.representer.TFPDF

All Implemented Interfaces:

Representer<java.lang.String,Vector>, java.io.Serializable

public class TFPDF
extends AbstractRepresenter<java.lang.String,Vector>

Implementation of TFPDF---a variant of TFIDF---whereby the document frequency is weighted exponentially in order to favor terms occurring in many documents.

 References: 
 K.~Bun and M.~Ishizuka. Emerging topic tracking system in WWW.
 In Proceedings of WI~2001, pages 125--130.
 PDF.
 

Version:

$Id: TFPDF.java,v 1.1 2012/04/23 13:44:42 hoppe Exp $

Author:

dennis.hoppe(/\t)uni-weimar.de

See Also:

Serialized Form

Constructor Summary

TFPDF(java.util.Locale locale)

TFPDF(TermFrequency tf)

Method Summary

boolean	isTrained()
Vector	represent(java.lang.String text)
void	train(java.lang.Iterable<java.lang.String> texts, boolean forceTraining)

Methods inherited from class de.aitools.ir.retrievalmodels.representer.AbstractRepresenter

train

Methods inherited from class java.lang.Object

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

Constructor Detail

TFPDF

public TFPDF(java.util.Locale locale)

TFPDF

public TFPDF(TermFrequency tf)

Method Detail

represent

public Vector represent(java.lang.String text)

train

public void train(java.lang.Iterable<java.lang.String> texts,
                  boolean forceTraining)

isTrained

public boolean isTrained()