MatrixFeatures.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) 2012 Fernando José Iglesias García
 * Copyright (C) 2012 Fernando José Iglesias García
 */

#ifndef _MATRIX_FEATURES__H__
#define _MATRIX_FEATURES__H__

#include <shogun/features/Features.h>
#include <shogun/lib/SGMatrixList.h>


namespace shogun
{

template< class ST > class CMatrixFeatures : public CFeatures
{
    public:
        CMatrixFeatures();

        CMatrixFeatures(int32_t num_vecs, int32_t num_feats = 0);

        CMatrixFeatures(SGMatrixList< ST > feats, int32_t num_feats = 0);

        CMatrixFeatures(SGMatrix< ST > feats, int32_t feat_length, int32_t num_vecs);

        virtual CFeatures* duplicate() const;

        virtual ~CMatrixFeatures();

        virtual EFeatureType get_feature_type() const;

        virtual EFeatureClass get_feature_class() const;

        virtual int32_t get_num_vectors() const { return m_num_vectors; }

        SGMatrix< ST > get_feature_vector(int32_t num) const;

        void get_feature_vector_col(SGVector< ST > out, int32_t num, int32_t col) const;

        void set_feature_vector(SGMatrix< ST > const vec, int32_t num);

        inline SGMatrixList< ST > get_features() const { return m_features; }

        void set_features(SGMatrixList< ST > features, int32_t num_feats);

        virtual const char* get_name() const { return "MatrixFeatures"; }

        inline int32_t get_num_features() const { return m_num_features; }

        static CMatrixFeatures* obtain_from_generic(CFeatures* const base_features);

    private:
        void init();

        void cleanup();

    private:
        int32_t m_num_vectors;

        int32_t m_num_features;

        SGMatrixList< ST > m_features;

}; /* class CMatrixFeatures */

} /* namespace shogun */

#endif /* _MATRIX_FEATURES__H__ */