src/LSAFloatThesaurus.h

/*  -*- C++ -*-

    textIR - A fast text document retrieval engine

    Copyright (C) 2005-2009 Laurence Park

    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 3 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, see <http://www.gnu.org/licenses/>.

    File information:
    $Header: /home/staff/lapark/cvsroot/web_search/textIR/src/LSAFloatThesaurus.h,v 1.7.2.2 2009/11/05 01:46:39 lapark Exp $
*/

#ifndef LSAFLOAT_THESAURUS_H
#define LSAFLOAT_THESAURUS_H

#include "SortedSubIndex.tcc"
#include "Triplef_tfd.h"
#include "ElementFloatIndex.tcc"
#include "FileName.h"
#include "CSCTriple_matrix.tcc"


class LSAFloatThesaurus : public ElementFloatIndex<SortedSubIndex<WordSubIndex> >
{
public:

  LSAFloatThesaurus(int totalWords, BlockStats *stats, 
                SortedSubIndex<WordSubIndex> *index,
                    FileName *fileName, int eigenvalues);
  ~LSAFloatThesaurus(void);

  bool calculateRow(int currentRealWord);
  int listRealPosition(int position);
  int indexRealPosition(int position);


private:
  int _elements;
  int _eigenvalues;
  float **_eigenvectors;
  float *_eigenvalueList;

  Quantise *createQuantiser(float lower, float upper);
};

#endif

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