SparsePolyKernel.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 _SPARSEPOLYKERNEL_H___
00012 #define _SPARSEPOLYKERNEL_H___
00013 
00014 #include "lib/common.h"
00015 #include "kernel/SparseKernel.h"
00016 #include "features/SparseFeatures.h"
00017 
00028 class CSparsePolyKernel: public CSparseKernel<float64_t>
00029 {
00030     public:
00039         CSparsePolyKernel(
00040             CSparseFeatures<float64_t>* l, CSparseFeatures<float64_t>* r,
00041             int32_t size, int32_t d, bool inhom);
00042 
00049         CSparsePolyKernel(int32_t size, int32_t degree, bool inhomogene=true);
00050 
00051         virtual ~CSparsePolyKernel();
00052 
00059         virtual bool init(CFeatures* l, CFeatures* r);
00060 
00062         virtual void cleanup();
00063 
00069         virtual bool load_init(FILE* src);
00070 
00076         virtual bool save_init(FILE* dest);
00077 
00082         inline virtual EFeatureType get_feature_type() { return F_DREAL; }
00083 
00088         virtual EKernelType get_kernel_type() { return K_POLY; }
00089 
00094         virtual const char* get_name() { return "SparsePoly"; }
00095 
00096     protected:
00105         virtual float64_t compute(int32_t idx_a, int32_t idx_b);
00106 
00107     protected:
00109         int32_t degree;
00111         bool inhomogene;
00112 };
00113 
00114 #endif /* _SPARSEPOLYKERNEL_H__ */

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