CompactVMatrixGaussianKernel.h

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// -*- C++ -*-

// PLearn (A C++ Machine Learning Library)
// Copyright (C) 1998 Pascal Vincent
// Copyright (C) 1999-2002 Pascal Vincent, Yoshua Bengio and University of Montreal
//

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/* *******************************************************      
   * $Id: CompactVMatrixGaussianKernel.h,v 1.6 2004/07/21 16:30:52 chrish42 Exp $
   * This file is part of the PLearn library.
   ******************************************************* */


#ifndef CompactVMatrixGaussianKernel_INC
#define CompactVMatrixGaussianKernel_INC

#include "Kernel.h"
#include <plearn/vmat/CompactVMatrix.h>

namespace PLearn {
using namespace std;

class CompactVMatrixGaussianKernel: public Kernel
{
  typedef Kernel inherited;

 protected:
  real sigma;
  PP<CompactVMatrix> m;

 public:
  CompactVMatrixGaussianKernel()
    : sigma(), m(0) {}
  CompactVMatrixGaussianKernel(real the_sigma,PP<CompactVMatrix>& vm)
    : sigma(the_sigma), m(vm) {}

  PLEARN_DECLARE_OBJECT(CompactVMatrixGaussianKernel);

  virtual real evaluate(const Vec& x1, const Vec& x2) const;
  virtual void setParameters(Vec paramvec);

protected:
  static void declareOptions(OptionList &ol);
};

DECLARE_OBJECT_PTR(CompactVMatrixGaussianKernel);


} // end of namespace PLearn

#endif

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