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) 1999-2009 Soeren Sonnenburg
00008  * Copyright (C) 1999-2009 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 
00031 class CSparsePolyKernel: public CSparseKernel<float64_t>
00032 {
00033     public:
00042         CSparsePolyKernel(
00043             CSparseFeatures<float64_t>* l, CSparseFeatures<float64_t>* r,
00044             int32_t size, int32_t d, bool inhom);
00045 
00052         CSparsePolyKernel(int32_t size, int32_t degree, bool inhomogene=true);
00053 
00054         virtual ~CSparsePolyKernel();
00055 
00062         virtual bool init(CFeatures* l, CFeatures* r);
00063 
00065         virtual void cleanup();
00066 
00072         virtual bool load_init(FILE* src);
00073 
00079         virtual bool save_init(FILE* dest);
00080 
00085         inline virtual EFeatureType get_feature_type() { return F_DREAL; }
00086 
00091         virtual EKernelType get_kernel_type() { return K_POLY; }
00092 
00097         virtual const char* get_name() const { return "SparsePoly"; }
00098 
00099     protected:
00108         virtual float64_t compute(int32_t idx_a, int32_t idx_b);
00109 
00110     protected:
00112         int32_t degree;
00114         bool inhomogene;
00115 };
00116 
00117 #endif /* _SPARSEPOLYKERNEL_H__ */

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