FixedDegreeStringKernel.h

Go to the documentation of this file.
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 _FIXEDDEGREESTRINGKERNEL_H___
00012 #define _FIXEDDEGREESTRINGKERNEL_H___
00013 
00014 #include "lib/common.h"
00015 #include "kernel/StringKernel.h"
00016 
00029 class CFixedDegreeStringKernel: public CStringKernel<CHAR>
00030 {
00031     public:
00037         CFixedDegreeStringKernel(INT size, INT degree);
00038 
00045         CFixedDegreeStringKernel(
00046             CStringFeatures<CHAR>* l, CStringFeatures<CHAR>* r,
00047             INT degree);
00048 
00049         virtual ~CFixedDegreeStringKernel();
00050 
00057         virtual bool init(CFeatures* l, CFeatures* r);
00058 
00060         virtual void cleanup();
00061 
00067         bool load_init(FILE* src);
00068 
00074         bool save_init(FILE* dest);
00075 
00080         virtual EKernelType get_kernel_type()
00081         {
00082             return K_FIXEDDEGREE;
00083         }
00084 
00089         virtual const CHAR* get_name()
00090         {
00091             return "FixedDegree";
00092         }
00093 
00094     protected:
00103         DREAL compute(INT idx_a, INT idx_b);
00105         INT degree;
00107         DREAL *sqrtdiag_lhs;
00109         DREAL *sqrtdiag_rhs;
00111         bool initialized;
00112 };
00113 
00114 #endif /* _FIXEDDEGREESTRINGKERNEL_H___ */

SHOGUN Machine Learning Toolbox - Documentation