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) 2011 Joanna Stocka 00008 * Copyright (C) 2007-2011 Fraunhofer Institute FIRST and Max-Planck-Society 00009 */ 00010 00011 #include <shogun/lib/config.h> 00012 00013 #ifndef MULTIQUADRIC_H_ 00014 #define MULTIQUADRIC_H_ 00015 00016 #include <shogun/lib/common.h> 00017 #include <shogun/kernel/Kernel.h> 00018 #include <shogun/distance/Distance.h> 00019 00020 namespace shogun 00021 { 00022 00023 class CDistance; 00030 class CMultiquadricKernel: public CKernel 00031 { 00032 public: 00034 CMultiquadricKernel(); 00035 00041 CMultiquadricKernel(int32_t cache, float64_t coef, CDistance* dist); 00042 00049 CMultiquadricKernel(CFeatures *l, CFeatures *r, float64_t coef, CDistance* dist); 00050 00056 virtual bool init(CFeatures* l, CFeatures* r); 00057 00061 inline virtual EKernelType get_kernel_type() { return K_MULTIQUADRIC; } 00062 00066 inline virtual EFeatureType get_feature_type() { return m_distance->get_feature_type(); } 00067 00071 inline virtual EFeatureClass get_feature_class() { return m_distance->get_feature_class(); } 00072 00076 inline virtual const char* get_name() const { return "Multiquadric"; } 00077 00081 inline float64_t get_coef() { return m_coef; } 00082 00086 inline void set_coef(float64_t value) { m_coef = value; } 00087 00088 virtual ~CMultiquadricKernel(); 00089 00090 protected: 00098 virtual float64_t compute(int32_t idx_a, int32_t idx_b); 00099 00100 private: 00101 void init(); 00102 00103 protected: 00104 00106 CDistance* m_distance; 00107 00109 float64_t m_coef; 00110 00111 }; 00112 } 00113 00114 #endif /* MULTIQUADRIC_H_ */