GeneralizedOneHotVMatrix.h

Go to the documentation of this file.

// -*- C++ -*-

// PLearn (A C++ Machine Learning Library)
// Copyright (C) 1998 Pascal Vincent
// Copyright (C) 1999-2001 Pascal Vincent, Yoshua Bengio, Rejean Ducharme and University of Montreal
// Copyright (C) 2002 Pascal Vincent, Julien Keable, Xavier Saint-Mleux
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// 
//  1. Redistributions of source code must retain the above copyright
//     notice, this list of conditions and the following disclaimer.
// 
//  2. Redistributions in binary form must reproduce the above copyright
//     notice, this list of conditions and the following disclaimer in the
//     documentation and/or other materials provided with the distribution.
// 
//  3. The name of the authors may not be used to endorse or promote
//     products derived from this software without specific prior written
//     permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
// NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// 
// This file is part of the PLearn library. For more information on the PLearn
// library, go to the PLearn Web site at www.plearn.org


/* *******************************************************      
   * $Id: GeneralizedOneHotVMatrix.h,v 1.6 2004/07/09 19:42:23 tihocan Exp $
   ******************************************************* */


#ifndef GeneralizedOneHotVMatrix_INC
#define GeneralizedOneHotVMatrix_INC

#include "RowBufferedVMatrix.h"
#include "VMat.h"

namespace PLearn {
using namespace std;
 

class GeneralizedOneHotVMatrix: public RowBufferedVMatrix
{
  typedef RowBufferedVMatrix inherited;

 protected:
  VMat distr;
  Vec index;
  Vec nclasses;
  Vec cold_value;
  Vec hot_value;

 public:
  // ******************
  // *  Constructors  *
  // ******************
  GeneralizedOneHotVMatrix(); 

  GeneralizedOneHotVMatrix(VMat the_distr, Vec the_index, Vec the_nclasses,
                           Vec the_cold_value, Vec the_host_value);


  PLEARN_DECLARE_OBJECT(GeneralizedOneHotVMatrix);

 protected:

  virtual void getNewRow(int i, const Vec& samplevec) const;
  static void declareOptions(OptionList &ol);

 public:

  virtual void build();

  virtual void reset_dimensions() 
    { 
      distr->reset_dimensions(); 
      width_=distr->width(); 
      length_=distr->length(); 
    }

private:
    void build_();
};

DECLARE_OBJECT_PTR(GeneralizedOneHotVMatrix);

} // end of namespcae PLearn
#endif

---