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) 1999-2010 Soeren Sonnenburg 00008 * Copyright (C) 1999-2009 Fraunhofer Institute FIRST and Max-Planck-Society 00009 * Copyright (C) 2010 Berlin Institute of Technology 00010 */ 00011 00012 #ifndef _POLYKERNEL_H___ 00013 #define _POLYKERNEL_H___ 00014 00015 #include <shogun/lib/common.h> 00016 #include <shogun/kernel/DotKernel.h> 00017 #include <shogun/features/DotFeatures.h> 00018 00019 namespace shogun 00020 { 00021 class CDotFeatures; 00022 00036 class CPolyKernel: public CDotKernel 00037 { 00038 public: 00040 CPolyKernel(); 00041 00050 CPolyKernel(CDotFeatures* l, CDotFeatures* r, 00051 int32_t d, bool inhom, int32_t size=10); 00052 00059 CPolyKernel(int32_t size, int32_t degree, bool inhomogene=true); 00060 00061 virtual ~CPolyKernel(); 00062 00069 virtual bool init(CFeatures* l, CFeatures* r); 00070 00072 virtual void cleanup(); 00073 00078 virtual EKernelType get_kernel_type() { return K_POLY; } 00079 00084 virtual const char* get_name() const { return "PolyKernel"; }; 00085 00086 protected: 00095 virtual float64_t compute(int32_t idx_a, int32_t idx_b); 00096 00097 private: 00098 void init(); 00099 00100 protected: 00102 int32_t degree; 00104 bool inhomogene; 00105 }; 00106 } 00107 #endif /* _POLYKERNEL_H__ */