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 _POLYMATCHSTRINGKERNEL_H___ 00012 #define _POLYMATCHSTRINGKERNEL_H___ 00013 00014 #include <shogun/lib/common.h> 00015 #include <shogun/kernel/StringKernel.h> 00016 00017 namespace shogun 00018 { 00036 class CPolyMatchStringKernel: public CStringKernel<char> 00037 { 00038 public: 00040 CPolyMatchStringKernel(); 00041 00048 CPolyMatchStringKernel(int32_t size, int32_t degree, bool inhomogene); 00049 00057 CPolyMatchStringKernel( 00058 CStringFeatures<char>* l, CStringFeatures<char>* r, 00059 int32_t degree, bool inhomogene); 00060 00061 virtual ~CPolyMatchStringKernel(); 00062 00069 virtual bool init(CFeatures* l, CFeatures* r); 00070 00072 virtual void cleanup(); 00073 00078 virtual EKernelType get_kernel_type() 00079 { 00080 return K_POLYMATCH; 00081 } 00082 00087 virtual const char* get_name() const { return "PolyMatchStringKernel"; } 00088 00093 void set_rescaling_enabled(bool n) 00094 { 00095 rescaling=n; 00096 } 00097 00102 bool get_rescaling_enabled() 00103 { 00104 return rescaling; 00105 } 00106 00107 protected: 00116 virtual float64_t compute(int32_t idx_a, int32_t idx_b); 00117 00118 private: 00119 void init(); 00120 00121 protected: 00123 int32_t degree; 00125 bool inhomogene; 00127 bool rescaling; 00128 }; 00129 } 00130 #endif /* _POLYMATCHSTRINGKERNEL_H___ */