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) 1999-2008 Gunnar Raetsch 00008 * Written (W) 1999-2008 Soeren Sonnenburg 00009 * Copyright (C) 1999-2009 Fraunhofer Institute FIRST and Max-Planck-Society 00010 */ 00011 00012 #ifndef _LOCALITYIMPROVEDSTRINGKERNEL_H___ 00013 #define _LOCALITYIMPROVEDSTRINGKERNEL_H___ 00014 00015 #include <shogun/lib/common.h> 00016 #include <shogun/kernel/StringKernel.h> 00017 00018 namespace shogun 00019 { 00030 class CLocalityImprovedStringKernel: public CStringKernel<char> 00031 { 00032 public: 00034 CLocalityImprovedStringKernel(); 00035 00043 CLocalityImprovedStringKernel(int32_t size, int32_t length, 00044 int32_t inner_degree, int32_t outer_degree); 00045 00054 CLocalityImprovedStringKernel( 00055 CStringFeatures<char>* l, CStringFeatures<char>* r, 00056 int32_t length, int32_t inner_degree, int32_t outer_degree); 00057 00058 virtual ~CLocalityImprovedStringKernel(); 00059 00066 virtual bool init(CFeatures* l, CFeatures* r); 00067 00072 virtual EKernelType get_kernel_type() { return K_LOCALITYIMPROVED; } 00073 00078 virtual const char* get_name() const { return "LocalityImprovedStringKernel"; } 00079 00080 protected: 00089 float64_t compute(int32_t idx_a, int32_t idx_b); 00090 00091 private: 00092 void init(); 00093 00094 protected: 00096 int32_t length; 00098 int32_t inner_degree; 00100 int32_t outer_degree; 00101 }; 00102 } 00103 #endif /* _LOCALITYIMPROVEDSTRINGKERNEL_H__ */