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) 2008-2009 Christian Gehl 00008 * Copyright (C) 2008-2009 Fraunhofer Institute FIRST 00009 */ 00010 00011 #ifndef _CHISQUAREDISTANCE_H___ 00012 #define __CHISQUAREDISTANCE___ 00013 00014 #include <shogun/lib/common.h> 00015 #include <shogun/distance/SimpleDistance.h> 00016 #include <shogun/features/SimpleFeatures.h> 00017 00018 namespace shogun 00019 { 00033 class CChiSquareDistance: public CSimpleDistance<float64_t> 00034 { 00035 public: 00037 CChiSquareDistance(); 00038 00044 CChiSquareDistance(CSimpleFeatures<float64_t>* l, CSimpleFeatures<float64_t>* r); 00045 virtual ~CChiSquareDistance(); 00046 00053 virtual bool init(CFeatures* l, CFeatures* r); 00054 00056 virtual void cleanup(); 00057 00062 virtual EDistanceType get_distance_type() { return D_CHISQUARE; } 00063 00068 virtual const char* get_name() const { return "ChiSquareDistance"; } 00069 00070 protected: 00074 virtual float64_t compute(int32_t idx_a, int32_t idx_b); 00075 }; 00076 00077 } // namespace shogun 00078 #endif /* _CHISQUAREDISTANCE_H___ */
