MinkowskiMetric.h

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00001 /*
00002  * This program is free software; you can redistribute it and/or modify
00003  * it under the terms of the GNU General Public License as published by
00004  * the Free Software Foundation; either version 3 of the License, or
00005  * (at your option) any later version.
00006  *
00007  * Written (W) 2006-2009 Christian Gehl
00008  * Copyright (C) 2006-2009 Fraunhofer Institute FIRST and Max-Planck-Society
00009  */
00010 
00011 #ifndef _MINKOWSKIMETRIC_H___
00012 #define _MINKOWSKIMETRIC_H___
00013 
00014 #include "lib/common.h"
00015 #include "distance/SimpleDistance.h"
00016 #include "features/SimpleFeatures.h"
00017 
00018 namespace shogun
00019 {
00040 class CMinkowskiMetric: public CSimpleDistance<float64_t>
00041 {
00042     public:
00047         CMinkowskiMetric(float64_t k);
00048 
00055         CMinkowskiMetric(CSimpleFeatures<float64_t>* l, CSimpleFeatures<float64_t>* r, float64_t k);
00056         virtual ~CMinkowskiMetric();
00057 
00063         virtual bool init(CFeatures* l, CFeatures* r);
00064 
00066         virtual void cleanup();
00067 
00072         virtual EDistanceType get_distance_type() { return D_MINKOWSKI;}
00073 
00078         virtual const char* get_name() const { return "Minkowski-Metric"; }
00079 
00080     protected:
00084         virtual float64_t compute(int32_t idx_a, int32_t idx_b);
00085 
00086     protected:
00088         float64_t k;
00089 };
00090 
00091 } // namespace shogun
00092 #endif /* _MINKOWSKIMETRIC_H___ */
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