SimpleDistance.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 _SIMPLEDISTANCE_H___
#define _SIMPLEDISTANCE_H___

#include <shogun/distance/Distance.h>
#include <shogun/features/SimpleFeatures.h>
#include <shogun/io/SGIO.h>

namespace shogun
{
template <class ST> class CSimpleDistance : public CDistance
{
    public:
        CSimpleDistance() : CDistance() {}

        virtual bool init(CFeatures* l, CFeatures* r)
        {
            CDistance::init(l,r);

            ASSERT(l->get_feature_class()==C_SIMPLE);
            ASSERT(r->get_feature_class()==C_SIMPLE);
            ASSERT(l->get_feature_type()==this->get_feature_type());
            ASSERT(r->get_feature_type()==this->get_feature_type());
            
            
            if ( ((CSimpleFeatures<ST>*) l)->get_num_features() != ((CSimpleFeatures<ST>*) r)->get_num_features() )
            {  
                SG_ERROR( "train or test features #dimension mismatch (l:%d vs. r:%d)\n",
                        ((CSimpleFeatures<ST>*) l)->get_num_features(),((CSimpleFeatures<ST>*) r)->get_num_features());
            }
        
            return true;
        }

        inline virtual EFeatureClass get_feature_class() { return C_SIMPLE; }

        inline virtual EFeatureType get_feature_type();

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

        virtual void cleanup()=0;

        virtual EDistanceType get_distance_type()=0;
};

template<> inline EFeatureType CSimpleDistance<float64_t>::get_feature_type() { return F_DREAL; }

template<> inline EFeatureType CSimpleDistance<uint64_t>::get_feature_type() { return F_ULONG; }

template<> inline EFeatureType CSimpleDistance<int32_t>::get_feature_type() { return F_INT; }

template<> inline EFeatureType CSimpleDistance<uint16_t>::get_feature_type() { return F_WORD; }

template<> inline EFeatureType CSimpleDistance<int16_t>::get_feature_type() { return F_SHORT; }

template<> inline EFeatureType CSimpleDistance<uint8_t>::get_feature_type() { return F_BYTE; }

template<> inline EFeatureType CSimpleDistance<char>::get_feature_type() { return F_CHAR; }

} // namespace shogun
#endif