KNNVMatrix.h

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// -*- C++ -*-

// KNNVMatrix.h
//
// Copyright (C) 2004 Olivier Delalleau 
// 
// 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: KNNVMatrix.h,v 1.12 2004/07/21 20:11:40 tihocan Exp $ 
   ******************************************************* */

// Authors: Olivier Delalleau

#ifndef KNNVMatrix_INC
#define KNNVMatrix_INC

#include <plearn/ker/Kernel.h>
#include "SourceVMatrix.h"

namespace PLearn {
using namespace std;

class KNNVMatrix: public SourceVMatrix
{

private:

  typedef SourceVMatrix inherited;

  mutable Vec source_row;

protected:
  // *********************
  // * protected options *
  // *********************

  // Fields below are not options.

  Mat nn;

  Mat pij;
    
public:

  // ************************
  // * public build options *
  // ************************

  VMat k_nn_mat;
  Ker kernel_pij;
  int knn;
  bool report_progress;

  // ****************
  // * Constructors *
  // ****************

  // Default constructor, make sure the implementation in the .cc
  // initializes all fields to reasonable default values.
  KNNVMatrix();

  // ******************
  // * VMatrix methods *
  // ******************

private: 

  void build_();

protected: 

  static void declareOptions(OptionList& ol);

  inline int getSourceIndexOf(int i, int& i_ref, int& i_n) const;

  inline int getTag(int p) const;

public:

  // ************************
  // **** Object methods ****
  // ************************

  virtual void build();

  virtual void makeDeepCopyFromShallowCopy(map<const void*, void*>& copies);

  // Declares other standard object methods
  //  If your class is not instantiatable (it has pure virtual methods)
  // you should replace this by PLEARN_DECLARE_ABSTRACT_OBJECT_METHODS 
  PLEARN_DECLARE_OBJECT(KNNVMatrix);


  // **************************
  // **** VMatrix methods ****
  // **************************

protected:

  virtual void getNewRow(int i, const Vec& v) const;

};

// Declares a few other classes and functions related to this class
  DECLARE_OBJECT_PTR(KNNVMatrix);
  
} // end of namespace PLearn

#endif

---