PolyMatchWordStringKernel.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 _POLYMATCHWORDSTRINGKERNEL_H___
00012 #define _POLYMATCHWORDSTRINGKERNEL_H___
00013 
00014 #include <shogun/lib/common.h>
00015 #include <shogun/kernel/StringKernel.h>
00016 #include <shogun/features/StringFeatures.h>
00017 
00018 namespace shogun
00019 {
00038 class CPolyMatchWordStringKernel: public CStringKernel<uint16_t>
00039 {
00040     public:
00042         CPolyMatchWordStringKernel();
00043 
00050         CPolyMatchWordStringKernel(int32_t size, int32_t degree, bool inhomogene);
00051 
00059         CPolyMatchWordStringKernel(CStringFeatures<uint16_t>* l, CStringFeatures<uint16_t>* r, int32_t degree, bool inhomogene);
00060 
00061         virtual ~CPolyMatchWordStringKernel();
00062 
00069         virtual bool init(CFeatures* l, CFeatures* r);
00070 
00072         virtual void cleanup();
00073 
00078         virtual EKernelType get_kernel_type() { return K_POLYMATCH; }
00079 
00084         virtual const char* get_name() const { return "PolyMatchWordStringKernel"; }
00085 
00086     protected:
00095         virtual float64_t compute(int32_t idx_a, int32_t idx_b);
00096 
00097     private:
00098         void init();
00099 
00100     protected:
00102         int32_t degree;
00104         bool inhomogene;
00105 };
00106 }
00107 #endif /* _POLYMATCHWORDSTRINGKERNEL_H__ */
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