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00011 #ifndef PYRAMIDCHI2_H_
00012 #define PYRAMIDCHI2_H_
00013
00014 #include "lib/common.h"
00015 #include "kernel/SimpleKernel.h"
00016 #include "features/Features.h"
00017 #include "features/SimpleFeatures.h"
00018
00019 namespace shogun
00020 {
00021 template <class T> class CSimpleFeatures;
00022
00028 class CPyramidChi2 : public CSimpleKernel<float64_t>
00029 {
00030 public:
00031
00046 CPyramidChi2(int32_t size, int32_t num_cells2,
00047 float64_t* weights_foreach_cell2,
00048 int32_t width_computation_type2,
00049 float64_t width2);
00050
00069 CPyramidChi2(
00070 CSimpleFeatures<float64_t>* l, CSimpleFeatures<float64_t>* r,
00071 int32_t size, int32_t num_cells2,
00072 float64_t* weights_foreach_cell2,
00073 int32_t width_computation_type2,
00074 float64_t width2 );
00075
00081 virtual bool init(CFeatures* l, CFeatures* r);
00082
00083
00084 virtual ~CPyramidChi2();
00085
00087 virtual void cleanup();
00088
00090 virtual EKernelType get_kernel_type()
00091 {
00092 return K_PYRAMIDCHI2;
00093 }
00094
00096 virtual const char* get_name() const { return "PyramidoverChi2"; }
00097
00098
00112 virtual void setparams_pychi2(int32_t num_cells2,
00113 float64_t* weights_foreach_cell2,
00114 int32_t width_computation_type2,
00115 float64_t width2);
00116
00117 protected:
00119 CPyramidChi2();
00126 virtual float64_t compute(int32_t idx_a, int32_t idx_b);
00127
00128 protected:
00129
00131 int32_t num_cells;
00132
00134 float64_t* weights;
00135
00137 int32_t width_computation_type;
00139 float64_t width;
00141 int32_t num_randfeats_forwidthcomputation;
00142
00143
00144
00145
00146 };
00147 }
00148 #endif