KernelLocallyLinearEmbedding.h

Go to the documentation of this file.

/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * Written (W) 2011 Sergey Lisitsyn
 * Copyright (C) 2011 Berlin Institute of Technology and Max-Planck-Society
 */

#ifndef KERNELLOCALLYLINEAREMBEDDING_H_
#define KERNELLOCALLYLINEAREMBEDDING_H_
#include <shogun/lib/config.h>
#ifdef HAVE_LAPACK
#include <shogun/converter/LocallyLinearEmbedding.h>
#include <shogun/features/Features.h>
#include <shogun/distance/Distance.h>
#include <shogun/kernel/Kernel.h>

namespace shogun
{

class CFeatures;
class CKernel;

class CKernelLocallyLinearEmbedding: public CLocallyLinearEmbedding
{
public:

    CKernelLocallyLinearEmbedding();

    CKernelLocallyLinearEmbedding(CKernel* kernel);

    virtual ~CKernelLocallyLinearEmbedding();

    virtual CFeatures* apply(CFeatures* features);

    CSimpleFeatures<float64_t>* embed_kernel(CKernel* kernel);

    virtual const char* get_name() const;

protected:

    virtual SGMatrix<float64_t> construct_weight_matrix(SGMatrix<float64_t> kernel_matrix,
                                                        SGMatrix<int32_t> neighborhood_matrix);

    virtual SGMatrix<int32_t> get_neighborhood_matrix(SGMatrix<float64_t> kernel_matrix, int32_t k);


protected:

    static void* run_neighborhood_thread(void* p);

    static void* run_linearreconstruction_thread(void* p);

};
}

#endif /* HAVE_LAPACK */
#endif /* KERNELLOCALLYLINEAREMBEDDING_H_ */