MatchWordStringKernel.h

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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 _MATCHWORDSTRINGKERNEL_H___
00012 #define _MATCHWORDSTRINGKERNEL_H___
00013 
00014 #include <shogun/lib/common.h>
00015 #include <shogun/kernel/string/StringKernel.h>
00016 #include <shogun/features/StringFeatures.h>
00017 
00018 namespace shogun
00019 {
00037 class CMatchWordStringKernel: public CStringKernel<uint16_t>
00038 {
00039     public:
00041         CMatchWordStringKernel();
00042 
00048         CMatchWordStringKernel(int32_t size, int32_t d);
00049 
00056         CMatchWordStringKernel(CStringFeatures<uint16_t>* l, CStringFeatures<uint16_t>* r, int32_t degree);
00057 
00058         virtual ~CMatchWordStringKernel();
00059 
00066         virtual bool init(CFeatures* l, CFeatures* r);
00067 
00072         virtual EKernelType get_kernel_type() { return K_MATCHWORD; }
00073 
00078         virtual const char* get_name() const { return "MatchWordStringKernel"; }
00079 
00080     protected:
00089         virtual float64_t compute(int32_t idx_a, int32_t idx_b);
00090 
00091     private:
00092         void init();
00093 
00094     protected:
00096         int32_t degree;
00097 };
00098 }
00099 #endif /* _MATCHWORDSTRINGKERNEL_H__ */
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