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) 2010 Koen van de Sande 00008 * Copyright (C) 2010 Koen van de Sande / University of Amsterdam 00009 */ 00010 00011 #ifndef _HISTOGRAMINTERSECTIONKERNEL_H___ 00012 #define _HISTOGRAMINTERSECTIONKERNEL_H___ 00013 00014 #include <shogun/lib/common.h> 00015 #include <shogun/kernel/DotKernel.h> 00016 #include <shogun/features/SimpleFeatures.h> 00017 00018 namespace shogun 00019 { 00031 class CHistogramIntersectionKernel: public CDotKernel 00032 { 00033 public: 00035 CHistogramIntersectionKernel(void); 00036 00041 CHistogramIntersectionKernel(int32_t size); 00042 00049 CHistogramIntersectionKernel( 00050 CSimpleFeatures<float64_t>* l, CSimpleFeatures<float64_t>* r, int32_t size); 00051 00052 virtual ~CHistogramIntersectionKernel(); 00053 00060 virtual bool init(CFeatures* l, CFeatures* r); 00061 /* register the parameters 00062 */ 00063 virtual void register_params(); 00064 00069 virtual EKernelType get_kernel_type() { return K_HISTOGRAMINTERSECTION; } 00070 00075 virtual const char* get_name() const { return "HistogramIntersectionKernel"; } 00076 00080 inline float64_t get_beta() { return this->beta; } 00081 00085 inline void set_beta(float64_t value) { this->beta = value; } 00086 00087 protected: 00088 00090 float64_t beta; 00091 00100 virtual float64_t compute(int32_t idx_a, int32_t idx_b); 00101 00102 }; 00103 } 00104 #endif /* _HISTOGRAMINTERSECTIONKERNEL_H__ */