CompactVMatrixPolynomialKernel.cc

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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: CompactVMatrixPolynomialKernel.cc,v 1.4 2004/04/07 23:15:58 morinf Exp $
   * This file is part of the PLearn library.
   ******************************************************* */

#include "CompactVMatrixPolynomialKernel.h"

namespace PLearn {
using namespace std;

PLEARN_IMPLEMENT_OBJECT(CompactVMatrixPolynomialKernel, "ONE LINE DESCR", "NO HELP");

real CompactVMatrixPolynomialKernel::evaluate(const Vec& x1, const Vec& x2) const
{ // return ipow(beta*dot(x1,x2)+1.0, n);
  real dot_product=0;
  if (m)
    dot_product=m->dotProduct(int(x1[0]),int(x2[0]));
  else
    dot_product=dot(x1,x2);
  return ipow(beta*dot_product+1.0, n);
}

void CompactVMatrixPolynomialKernel::declareOptions(OptionList &ol)
{
    declareOption(ol, "n", &CompactVMatrixPolynomialKernel::n, OptionBase::buildoption,
                  "TODO: Some comments");
    declareOption(ol, "beta", &CompactVMatrixPolynomialKernel::beta, OptionBase::buildoption,
                  "TODO: Some comments");
    declareOption(ol, "m", &CompactVMatrixPolynomialKernel::m, OptionBase::buildoption, "");
    inherited::declareOptions(ol);
}


} // end of namespace PLearn

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