Spherical kernel.
Formally described as
![\[ k(x, y) = 1 - \frac{3}{2} \frac{|x-y|}{\sigma} + \frac{1}{2} \left( \frac{|x-y|}{\sigma} \right)^3 \mbox{if}~ |x-y| \leq \sigma \mbox{, zero otherwise} \]](form_162.png)
Definition at line 38 of file SphericalKernel.h.
Public Member Functions |
| | CSphericalKernel () |
| | CSphericalKernel (int32_t size, float64_t sigma, CDistance *dist) |
| | CSphericalKernel (CFeatures *l, CFeatures *r, float64_t sigma, CDistance *dist) |
| virtual bool | init (CFeatures *l, CFeatures *r) |
| void | init () |
| virtual EKernelType | get_kernel_type () |
| virtual EFeatureType | get_feature_type () |
| virtual EFeatureClass | get_feature_class () |
| virtual const char * | get_name () const |
| virtual void | set_sigma (float64_t s) |
| virtual float64_t | get_sigma () const |
| virtual | ~CSphericalKernel () |
| | CKernel () |
| | CKernel (int32_t size) |
| | CKernel (CFeatures *l, CFeatures *r, int32_t size) |
| virtual | ~CKernel () |
| float64_t | kernel (int32_t idx_a, int32_t idx_b) |
| SGMatrix< float64_t > | get_kernel_matrix () |
| virtual SGVector< float64_t > | get_kernel_col (int32_t j) |
| virtual SGVector< float64_t > | get_kernel_row (int32_t i) |
| template<class T > |
| SGMatrix< T > | get_kernel_matrix () |
| virtual bool | set_normalizer (CKernelNormalizer *normalizer) |
| virtual CKernelNormalizer * | get_normalizer () |
| virtual bool | init_normalizer () |
| virtual void | cleanup () |
| void | load (CFile *loader) |
| void | save (CFile *writer) |
| CFeatures * | get_lhs () |
| CFeatures * | get_rhs () |
| virtual int32_t | get_num_vec_lhs () |
| virtual int32_t | get_num_vec_rhs () |
| virtual bool | has_features () |
| bool | get_lhs_equals_rhs () |
| virtual void | remove_lhs_and_rhs () |
| virtual void | remove_lhs () |
| virtual void | remove_rhs () |
| | takes all necessary steps if the rhs is removed from kernel
|
| void | set_cache_size (int32_t size) |
| int32_t | get_cache_size () |
| void | list_kernel () |
| bool | has_property (EKernelProperty p) |
| virtual void | clear_normal () |
| virtual void | add_to_normal (int32_t vector_idx, float64_t weight) |
| EOptimizationType | get_optimization_type () |
| virtual void | set_optimization_type (EOptimizationType t) |
| bool | get_is_initialized () |
| virtual bool | init_optimization (int32_t count, int32_t *IDX, float64_t *weights) |
| virtual bool | delete_optimization () |
| bool | init_optimization_svm (CSVM *svm) |
| virtual float64_t | compute_optimized (int32_t vector_idx) |
| virtual void | compute_batch (int32_t num_vec, int32_t *vec_idx, float64_t *target, int32_t num_suppvec, int32_t *IDX, float64_t *alphas, float64_t factor=1.0) |
| float64_t | get_combined_kernel_weight () |
| void | set_combined_kernel_weight (float64_t nw) |
| virtual int32_t | get_num_subkernels () |
| virtual void | compute_by_subkernel (int32_t vector_idx, float64_t *subkernel_contrib) |
| virtual const float64_t * | get_subkernel_weights (int32_t &num_weights) |
| virtual void | set_subkernel_weights (SGVector< float64_t > weights) |
| | CSGObject () |
| | CSGObject (const CSGObject &orig) |
| virtual | ~CSGObject () |
| virtual bool | is_generic (EPrimitiveType *generic) const |
| template<class T > |
| void | set_generic () |
| void | unset_generic () |
| virtual void | print_serializable (const char *prefix="") |
| virtual bool | save_serializable (CSerializableFile *file, const char *prefix="") |
| virtual bool | load_serializable (CSerializableFile *file, const char *prefix="") |
| void | set_global_io (SGIO *io) |
| SGIO * | get_global_io () |
| void | set_global_parallel (Parallel *parallel) |
| Parallel * | get_global_parallel () |
| void | set_global_version (Version *version) |
| Version * | get_global_version () |
| SGVector< char * > | get_modelsel_names () |
| char * | get_modsel_param_descr (const char *param_name) |
| index_t | get_modsel_param_index (const char *param_name) |
Public Member Functions inherited from CKernel