FixedDegreeStringKernel.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 _FIXEDDEGREESTRINGKERNEL_H___
00012 #define _FIXEDDEGREESTRINGKERNEL_H___
00013 
00014 #include "lib/common.h"
00015 #include "kernel/StringKernel.h"
00016 
00017 namespace shogun
00018 {
00031 class CFixedDegreeStringKernel: public CStringKernel<char>
00032 {
00033     public:
00039         CFixedDegreeStringKernel(int32_t size, int32_t degree);
00040 
00047         CFixedDegreeStringKernel(
00048             CStringFeatures<char>* l, CStringFeatures<char>* r,
00049             int32_t degree);
00050 
00051         virtual ~CFixedDegreeStringKernel();
00052 
00059         virtual bool init(CFeatures* l, CFeatures* r);
00060 
00062         virtual void cleanup();
00063 
00068         virtual EKernelType get_kernel_type()
00069         {
00070             return K_FIXEDDEGREE;
00071         }
00072 
00077         virtual const char* get_name() const { return "FixedDegree"; }
00078 
00079     protected:
00088         float64_t compute(int32_t idx_a, int32_t idx_b);
00090         int32_t degree;
00091 };
00092 }
00093 #endif /* _FIXEDDEGREESTRINGKERNEL_H___ */

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