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 Soeren Sonnenburg 00008 * Copyright (C) 1999-2008 Fraunhofer Institute FIRST and Max-Planck-Society 00009 */ 00010 00011 #ifndef _WORDMATCHKERNEL_H___ 00012 #define _WORDMATCHKERNEL_H___ 00013 00014 #include "lib/common.h" 00015 #include "kernel/SimpleKernel.h" 00016 #include "features/WordFeatures.h" 00017 00019 class CWordMatchKernel: public CSimpleKernel<WORD> 00020 { 00021 public: 00029 CWordMatchKernel(INT size, INT d, 00030 bool do_rescale=true, DREAL scale=1.); 00031 00040 CWordMatchKernel(CWordFeatures* l, CWordFeatures* r, INT degree, 00041 bool do_rescale=true, DREAL scale=1.); 00042 00043 virtual ~CWordMatchKernel(); 00044 00051 virtual bool init(CFeatures* l, CFeatures* r); 00052 00058 virtual bool load_init(FILE* src); 00059 00065 virtual bool save_init(FILE* dest); 00066 00071 virtual EKernelType get_kernel_type() { return K_LINEAR; } 00072 00077 virtual const CHAR* get_name() { return "WordMatch"; } 00078 00079 protected: 00088 virtual DREAL compute(INT idx_a, INT idx_b); 00089 00091 virtual void init_rescale(); 00092 00093 protected: 00095 double scale; 00097 bool do_rescale; 00099 bool initialized; 00100 00102 INT degree; 00103 }; 00104 00105 #endif /* _WORDMATCHKERNEL_H__ */