ScaledLaplacianKernel.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, Rejean Ducharme and University of Montreal
// Copyright (C) 2001-2002 Nicolas Chapados, Ichiro Takeuchi, Jean-Sebastien Senecal
// Copyright (C) 2002 Xiangdong Wang, Christian Dorion

// 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.
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//  2. Redistributions in binary form must reproduce the above copyright
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//     documentation and/or other materials provided with the distribution.
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/* *******************************************************      
   * $Id: ScaledLaplacianKernel.h,v 1.3 2004/04/07 23:15:17 morinf Exp $
   * This file is part of the PLearn library.
   ******************************************************* */

#ifndef ScaledLaplacianKernel_INC
#define ScaledLaplacianKernel_INC

#include "Kernel.h"

namespace PLearn {
using namespace std;



class ScaledLaplacianKernel: public Kernel
{
    typedef Kernel inherited;
                
protected:
    Vec phi;
public:
    ScaledLaplacianKernel()
        : phi() {}
    ScaledLaplacianKernel(Vec the_phi)
        : phi(the_phi)
        {}

    PLEARN_DECLARE_OBJECT(ScaledLaplacianKernel);

    virtual void makeDeepCopyFromShallowCopy(map<const void*, void*>& copies);
    virtual real evaluate(const Vec& x1, const Vec& x2) const;
};

DECLARE_OBJECT_PTR(ScaledLaplacianKernel);

} // end of namespace PLearn

#endif

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