PolyKernel.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 Soeren Sonnenburg
00008  * Copyright (C) 1999-2008 Fraunhofer Institute FIRST and Max-Planck-Society
00009  */
00010 
00011 #ifndef _POLYKERNEL_H___
00012 #define _POLYKERNEL_H___
00013 
00014 #include "lib/common.h"
00015 #include "kernel/SimpleKernel.h"
00016 #include "features/RealFeatures.h"
00017 
00028 class CPolyKernel: public CSimpleKernel<DREAL>
00029 {
00030     public:
00040         CPolyKernel(CRealFeatures* l, CRealFeatures* r,
00041             INT d, bool inhom, bool use_norm, INT size=10);
00042 
00050         CPolyKernel(INT size, INT degree,
00051             bool inhomogene=true, bool use_normalization=true);
00052 
00053         virtual ~CPolyKernel();
00054 
00061         virtual bool init(CFeatures* l, CFeatures* r);
00062 
00064         virtual void cleanup();
00065 
00071         virtual bool load_init(FILE* src);
00072 
00078         virtual bool save_init(FILE* dest);
00079 
00084         virtual EKernelType get_kernel_type() { return K_POLY; }
00085 
00090         virtual const CHAR* get_name() { return "Poly"; };
00091 
00092     protected:
00101         virtual DREAL compute(INT idx_a, INT idx_b);
00102 
00103     protected:
00105         INT degree;
00107         bool inhomogene;
00109         bool use_normalization;
00110 
00112         DREAL *sqrtdiag_lhs;
00114         DREAL *sqrtdiag_rhs;
00116         bool initialized;
00117 };
00118 
00119 #endif /* _POLYKERNEL_H__ */

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