DistanceMachine.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
 * Written (W) 2006-2009 Soeren Sonnenburg
 * Copyright (C) 1999-2009 Fraunhofer Institute FIRST and Max-Planck-Society
 */

#ifndef _DISTANCE_MACHINE_H__
#define _DISTANCE_MACHINE_H__

#include <shogun/lib/common.h>
#include <shogun/distance/Distance.h>
#include <shogun/features/Labels.h>
#include <shogun/machine/Machine.h>

#include <stdio.h>

namespace shogun
{
    class CLabels;
    class CDistance;
    class CMachine;

class CDistanceMachine : public CMachine
{
    public:
        CDistanceMachine();
        virtual ~CDistanceMachine();

        inline void set_distance(CDistance* d)
        {
            SG_UNREF(distance);
            SG_REF(d);
            distance=d;
        }

        inline CDistance* get_distance() { SG_REF(distance); return distance; }

        void distances_lhs(float64_t* result,int32_t idx_a1,int32_t idx_a2,int32_t idx_b);

        void distances_rhs(float64_t* result,int32_t idx_b1,int32_t idx_b2,int32_t idx_a);  

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

        virtual CLabels* apply();

        virtual CLabels* apply(CFeatures* data);

        virtual float64_t apply(int32_t num);

    protected:
        virtual void store_model_features()
        {
            SG_ERROR("store_model_features not yet implemented for %s!\n",
                    get_name());
        }

        static void* run_distance_thread_lhs(void* p);

        static void* run_distance_thread_rhs(void* p);

    private:
        void init();

    protected:
        CDistance* distance;
};
}
#endif