linearkernel.h

/*
 * The GURLS Package in C++
 *
 * Copyright (C) 2011-1013, IIT@MIT Lab
 * All rights reserved.
 *
 * authors:  M. Santoro
 * email:   msantoro@mit.edu
 * website: http://cbcl.mit.edu/IIT@MIT/IIT@MIT.html
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *     * Redistributions of source code must retain the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer.
 *     * 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.
 *     * Neither the name(s) of the copyright holders nor the names
 *       of its contributors or of the Massacusetts Institute of
 *       Technology or of the Italian Institute of Technology may be
 *       used to endorse or promote products derived from this software
 *       without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "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
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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 */


#ifndef _GURLS_LINEARKERNEL_H_
#define _GURLS_LINEARKERNEL_H_


#include "gurls++/kernel.h"
#include "gurls++/gmath.h"
#include "gurls++/optmatrix.h"

namespace gurls {

template <typename T>
class KernelLinear: public Kernel<T>
{
public:
    GurlsOptionsList* execute(const gMat2D<T>& X, const gMat2D<T>& Y, const GurlsOptionsList& opt)  throw(gException);
};

template<typename T>
GurlsOptionsList* KernelLinear<T>::execute(const gMat2D<T>& X, const gMat2D<T>& /*Y*/, const GurlsOptionsList &/*opt*/) throw(gException)
{

    GurlsOptionsList* kernel = new GurlsOptionsList("kernel");
    kernel->addOpt("type", "linear");

    gMat2D<T>* K = new gMat2D<T>(X.rows(), X.rows());

    dot(X.getData(), X.getData(), K->getData(), X.rows(), X.cols(), X.rows(), X.cols(), K->rows(), K->cols(), CblasNoTrans, CblasTrans, CblasColMajor);

    kernel->addOpt("K", new OptMatrix<gMat2D<T> >(*K));

    return kernel;
}

}

#endif //_GURLS_LINEARKERNEL_H_