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 00018 namespace shogun 00019 { 00033 class CSparsePolyKernel: public CSparseKernel<float64_t> 00034 { 00035 public: 00044 CSparsePolyKernel( 00045 CSparseFeatures<float64_t>* l, CSparseFeatures<float64_t>* r, 00046 int32_t size, int32_t d, bool inhom); 00047 00054 CSparsePolyKernel(int32_t size, int32_t degree, bool inhomogene=true); 00055 00056 virtual ~CSparsePolyKernel(); 00057 00064 virtual bool init(CFeatures* l, CFeatures* r); 00065 00067 virtual void cleanup(); 00068 00073 inline virtual EFeatureType get_feature_type() { return F_DREAL; } 00074 00079 virtual EKernelType get_kernel_type() { return K_POLY; } 00080 00085 virtual const char* get_name() const { return "SparsePoly"; } 00086 00087 protected: 00096 virtual float64_t compute(int32_t idx_a, int32_t idx_b); 00097 00098 protected: 00100 int32_t degree; 00102 bool inhomogene; 00103 }; 00104 } 00105 #endif /* _SPARSEPOLYKERNEL_H__ */