MultidimensionalScaling.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) 2011-2013 Sergey Lisitsyn
 * Copyright (C) 2011-2013 Berlin Institute of Technology and Max-Planck-Society
 */

#ifndef MULTIDIMENSIONALSCALING_H_
#define MULTIDIMENSIONALSCALING_H_
#include <shogun/lib/config.h>
#ifdef HAVE_EIGEN3
#include <shogun/converter/EmbeddingConverter.h>
#include <shogun/features/Features.h>
#include <shogun/distance/Distance.h>

namespace shogun
{

class CFeatures;
class CDistance;

class CMultidimensionalScaling: public CEmbeddingConverter
{
public:

    /* constructor */
    CMultidimensionalScaling();

    /* destructor */
    virtual ~CMultidimensionalScaling();

    virtual CDenseFeatures<float64_t>* embed_distance(CDistance* distance);

    virtual CFeatures* apply(CFeatures* features);

    const char* get_name() const;

    SGVector<float64_t> get_eigenvalues() const;

    void set_landmark_number(int32_t num);

    int32_t get_landmark_number() const;

    void set_landmark(bool landmark);

    bool get_landmark() const;

protected:

    virtual void init();

protected:

    SGVector<float64_t> m_eigenvalues;

    bool m_landmark;

    int32_t m_landmark_number;

};

}
#endif /* HAVE_EIGEN3 */
#endif /* MULTIDIMENSIONALSCALING_H_ */