CompactVMatrixPolynomialKernel.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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// THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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/* *******************************************************      
   * $Id: CompactVMatrixPolynomialKernel.h,v 1.6 2004/07/21 16:30:52 chrish42 Exp $
   * This file is part of the PLearn library.
   ******************************************************* */


#ifndef CompactVMatrixPolynomialKernel_INC
#define CompactVMatrixPolynomialKernel_INC

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

namespace PLearn {
using namespace std;

class CompactVMatrixPolynomialKernel: public Kernel
{
  typedef Kernel inherited;
                
protected:
    int n; 
    real beta; 
    PP<CompactVMatrix> m;
public:
    CompactVMatrixPolynomialKernel()
        : n(), beta() {}
    CompactVMatrixPolynomialKernel(int degree, PP<CompactVMatrix>& vm, real the_beta=1.0)
        : n(degree), beta(the_beta), m(vm) {}

    PLEARN_DECLARE_OBJECT(CompactVMatrixPolynomialKernel);

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

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

DECLARE_OBJECT_PTR(CompactVMatrixPolynomialKernel);

} // end of namespace PLearn

#endif

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