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 _SPARSEGAUSSIANKERNEL_H___ 00012 #define _SPARSEGAUSSIANKERNEL_H___ 00013 00014 #include "lib/common.h" 00015 #include "kernel/SparseKernel.h" 00016 #include "features/SparseFeatures.h" 00017 00029 class CSparseGaussianKernel: public CSparseKernel<float64_t> 00030 { 00031 public: 00037 CSparseGaussianKernel(int32_t size, float64_t width); 00038 00045 CSparseGaussianKernel( 00046 CSparseFeatures<float64_t>* l, CSparseFeatures<float64_t>* r, 00047 float64_t width); 00048 00049 virtual ~CSparseGaussianKernel(); 00050 00057 virtual bool init(CFeatures* l, CFeatures* r); 00058 00060 virtual void cleanup(); 00061 00067 virtual bool load_init(FILE* src); 00068 00074 virtual bool save_init(FILE* dest); 00075 00080 virtual EKernelType get_kernel_type() { return K_SPARSEGAUSSIAN; } 00081 00086 inline virtual EFeatureType get_feature_type() { return F_DREAL; } 00087 00092 virtual const char* get_name() const { return "SparseGaussian"; } 00093 00094 protected: 00103 virtual float64_t compute(int32_t idx_a, int32_t idx_b); 00104 00105 protected: 00107 float64_t width; 00109 float64_t* sq_lhs; 00111 float64_t* sq_rhs; 00112 }; 00113 00114 #endif /* _SPARSEGAUSSIANKERNEL_H__ */