MinkowskiMetric.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) 2006-2009 Christian Gehl
 * Copyright (C) 2006-2009 Fraunhofer Institute FIRST and Max-Planck-Society
 */

#ifndef _MINKOWSKIMETRIC_H___
#define _MINKOWSKIMETRIC_H___

#include <shogun/lib/config.h>

#include <shogun/lib/common.h>
#include <shogun/distance/DenseDistance.h>

namespace shogun
{
class CMinkowskiMetric: public CDenseDistance<float64_t>
{
    public:
        CMinkowskiMetric();

        CMinkowskiMetric(float64_t k);

        CMinkowskiMetric(CDenseFeatures<float64_t>* l, CDenseFeatures<float64_t>* r, float64_t k);
        virtual ~CMinkowskiMetric();

        virtual bool init(CFeatures* l, CFeatures* r);

        virtual void cleanup();

        virtual EDistanceType get_distance_type() { return D_MINKOWSKI;}

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

    protected:
        virtual float64_t compute(int32_t idx_a, int32_t idx_b);

    private:
        void init();

    protected:
        float64_t k;
};

} // namespace shogun
#endif /* _MINKOWSKIMETRIC_H___ */