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) 1999-2009 Soeren Sonnenburg 00008 * Copyright (C) 1999-2009 Fraunhofer Institute FIRST and Max-Planck-Society 00009 */ 00010 00011 #ifndef _CONSTKERNEL_H___ 00012 #define _CONSTKERNEL_H___ 00013 00014 #include <shogun/mathematics/Math.h> 00015 #include <shogun/lib/common.h> 00016 #include <shogun/kernel/Kernel.h> 00017 #include <shogun/features/Features.h> 00018 00019 namespace shogun 00020 { 00027 class CConstKernel: public CKernel 00028 { 00029 public: 00031 CConstKernel(); 00032 00037 CConstKernel(float64_t c); 00038 00045 CConstKernel(CFeatures* l, CFeatures *r, float64_t c); 00046 00047 virtual ~CConstKernel(); 00048 00055 virtual bool init(CFeatures* l, CFeatures* r); 00056 00061 inline virtual EKernelType get_kernel_type() { return K_CONST; } 00062 00067 inline virtual EFeatureType get_feature_type() 00068 { 00069 return F_ANY; 00070 } 00071 00076 inline virtual EFeatureClass get_feature_class() 00077 { 00078 return C_ANY; 00079 } 00080 00085 virtual const char* get_name() const { return "ConstKernel"; } 00086 00087 protected: 00094 inline virtual float64_t compute(int32_t row, int32_t col) 00095 { 00096 return const_value; 00097 } 00098 00099 private: 00100 void init(); 00101 00102 protected: 00104 float64_t const_value; 00105 }; 00106 } 00107 #endif /* _CONSTKERNEL_H__ */