System documentation of the GNU Image-Finding Tool

CDocumentFrequencyElement.h

/* -*- mode: c++ -*- 
*/
/* 

    GIFT, a flexible content based image retrieval system.
    Copyright (C) 1998, 1999, 2000, 2001, 2002, CUI University of Geneva

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/
#ifndef _CDOCUMENTFREQUENCYELEMENT
#define _CDOCUMENTFREQUENCYELEMENT
#include "libGIFTAcInvertedFile/include/uses-declarations.h"
#include <iostream>
#include <functional>
#include "libMRML/include/TID.h"

class CDocumentFrequencyElement{
  struct{
    TID mID;
    float mDocumentFrequency;
  } mContent;
public:
  CDocumentFrequencyElement();

  CDocumentFrequencyElement(TID inID,
                            float inDocumentFrequency);

  CDocumentFrequencyElement(istream& inStream);

  CDocumentFrequencyElement(const CDocumentFrequencyElement& inElement);



  bool input(istream& inStream);
  
  bool output(ostream& outStream)const;

  bool writeBinary(ostream& outStream)const;


  TID getID()const;

  unsigned int getIntegerDocumentFrequency()const;

  float getDocumentFrequency()const;

  void setDocumentFrequency(float);

  void divideDocumentFrequency(float);


};


class CSortByID_DFE:
  public binary_function
<CDocumentFrequencyElement,CDocumentFrequencyElement,bool>{
 public:
  inline bool operator()(const CDocumentFrequencyElement& l,
                         const CDocumentFrequencyElement& t){
    return l.getID()<t.getID();
  }
};



class CSortByDocumentFrequency_DFE:
  public binary_function
<CDocumentFrequencyElement,CDocumentFrequencyElement,bool>{
public:
  inline bool operator()(const CDocumentFrequencyElement& l,
                         const CDocumentFrequencyElement& t){
    return t.getDocumentFrequency()<l.getDocumentFrequency();
  }
};

#endif

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