Isomap.h

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/*
 * 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 ISOMAP_H_
#define ISOMAP_H_
#include <shogun/lib/config.h>
#ifdef HAVE_LAPACK
#include <shogun/converter/MultidimensionalScaling.h>
#include <shogun/lib/common.h>
#include <shogun/mathematics/Math.h>
#include <shogun/io/SGIO.h>
#include <shogun/features/DenseFeatures.h>
#include <shogun/features/Features.h>
#include <shogun/distance/Distance.h>

namespace shogun
{

class CFeatures;
class CDistance;

class CIsomap: public CMultidimensionalScaling
{
public:

    /* constructor */
    CIsomap();

    /* destructor */
    virtual ~CIsomap();

    const char* get_name() const;

    void set_k(int32_t k);

    int32_t get_k() const;

protected:

    virtual void init();

    virtual SGMatrix<float64_t> process_distance_matrix(SGMatrix<float64_t> distance_matrix);


protected:

    int32_t m_k;

protected:

    static void* run_dijkstra_thread(void* p);

    SGMatrix<float64_t> isomap_distance(SGMatrix<float64_t> D_matrix);

};
}
#endif /* HAVE_LAPACK */
#endif /* ISOMAP_H_ */