PNorm.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 Viktor Gal
 * Copyright (C) 2012 Viktor Gal
 */

#ifndef _PNORM_ONE__H__
#define _PNORM_ONE__H__

#include <shogun/preprocessor/DensePreprocessor.h>
#include <shogun/features/Features.h>
#include <shogun/lib/common.h>

#include <stdio.h>

namespace shogun
{
class CPNorm : public CDensePreprocessor<float64_t>
{
    public:
        CPNorm ();

        CPNorm (double p);
        
        virtual ~CPNorm ();

        virtual bool init (CFeatures* features);
        virtual void cleanup ();
        virtual bool load (FILE* f);
        virtual bool save (FILE* f);

        virtual SGMatrix<float64_t> apply_to_feature_matrix (CFeatures* features);

        virtual SGVector<float64_t> apply_to_feature_vector (SGVector<float64_t> vector);

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

        virtual EPreprocessorType get_type () const { return P_PNORM; }
        
        void set_pnorm (double pnorm);
        
        double get_pnorm () const;
    
    private: 
        void register_param ();
        inline float64_t get_pnorm (float64_t* vec, int32_t vec_len) const;
        
    private:
        double m_p;
};
}
#endif /* _PNORM_ONE__H__ */