SimpleLocalityImprovedStringKernel.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) 1999-2008 Gunnar Raetsch
00008  * Copyright (C) 1999-2009 Fraunhofer Institute FIRST and Max-Planck-Society
00009  */
00010 
00011 #ifndef _SIMPLELOCALITYIMPROVEDSTRINGKERNEL_H___
00012 #define _SIMPLELOCALITYIMPROVEDSTRINGKERNEL_H___
00013 
00014 #include "lib/common.h"
00015 #include "kernel/StringKernel.h"
00016 
00028 class CSimpleLocalityImprovedStringKernel: public CStringKernel<char>
00029 {
00030     public:
00038         CSimpleLocalityImprovedStringKernel(int32_t size, int32_t length,
00039             int32_t inner_degree, int32_t outer_degree);
00040 
00049         CSimpleLocalityImprovedStringKernel(
00050             CStringFeatures<char>* l, CStringFeatures<char>* r,
00051             int32_t length, int32_t inner_degree, int32_t outer_degree);
00052 
00053         virtual ~CSimpleLocalityImprovedStringKernel();
00054 
00061         virtual bool init(CFeatures *l, CFeatures *r);
00062 
00064         virtual void cleanup();
00065 
00071         bool load_init(FILE *src);
00072 
00078         bool save_init(FILE *dest);
00079 
00084         virtual EKernelType get_kernel_type()
00085         {
00086             return K_SIMPLELOCALITYIMPROVED;
00087         }
00088 
00093         virtual const char* get_name() const { return "SimpleLocalityImproved"; }
00094 
00095     private:
00107         float64_t dot_pyr (const char* const x1, const char* const x2,
00108                 const int32_t NOF_NTS, const int32_t NTWIDTH,
00109                 const int32_t DEGREE1, const int32_t DEGREE2, float64_t *pyra);
00110 
00111     protected:
00120         float64_t compute(int32_t idx_a, int32_t idx_b);
00121 
00122     protected:
00124         int32_t length;
00126         int32_t inner_degree;
00128         int32_t outer_degree;
00130         float64_t *pyramid_weights;
00131 };
00132 
00133 #endif /* _SIMPLELOCALITYIMPROVEDSTRINGKERNEL_H___ */

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