SHOGUN
v1.1.0
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The Exponential Kernel, closely related to the Gaussian Kernel computed on CDotFeatures.
It is computed as
where is the kernel width.
Definition at line 37 of file ExponentialKernel.h.
Public Member Functions | |
CExponentialKernel () | |
CExponentialKernel (CDotFeatures *l, CDotFeatures *r, float64_t width, CDistance *distance, int32_t size) | |
virtual | ~CExponentialKernel () |
virtual bool | init (CFeatures *l, CFeatures *r) |
virtual void | cleanup () |
virtual EKernelType | get_kernel_type () |
virtual const char * | get_name () const |
virtual float64_t | get_width () const |
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CDotKernel () | |
CDotKernel (int32_t cachesize) | |
CDotKernel (CFeatures *l, CFeatures *r) | |
virtual EFeatureClass | get_feature_class () |
virtual EFeatureType | get_feature_type () |
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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 () |
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) |
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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) |
Protected Member Functions | |
virtual float64_t | compute (int32_t idx_a, int32_t idx_b) |
virtual void | load_serializable_post () throw (ShogunException) |
Protected Attributes | |
CDistance * | m_distance |
float64_t | m_width |
Additional Inherited Members | |
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SGIO * | io |
Parallel * | parallel |
Version * | version |
Parameter * | m_parameters |
Parameter * | m_model_selection_parameters |
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template<class T > | |
static void * | get_kernel_matrix_helper (void *p) |
default constructor
Definition at line 22 of file ExponentialKernel.cpp.
CExponentialKernel | ( | CDotFeatures * | l, |
CDotFeatures * | r, | ||
float64_t | width, | ||
CDistance * | distance, | ||
int32_t | size | ||
) |
constructor
l | features of left-hand side |
r | features of right-hand side |
width | width |
distance | distance to be used |
size | cache size |
Definition at line 28 of file ExponentialKernel.cpp.
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virtual |
destructor
Definition at line 38 of file ExponentialKernel.cpp.
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virtual |
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protectedvirtual |
compute kernel function for features a and b idx_{a,b} denote the index of the feature vectors in the corresponding feature object
idx_a | index a |
idx_b | index b |
Reimplemented from CDotKernel.
Definition at line 57 of file ExponentialKernel.cpp.
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virtual |
return what type of kernel we are
Implements CDotKernel.
Definition at line 74 of file ExponentialKernel.h.
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virtual |
return the kernel's name
Reimplemented from CDotKernel.
Definition at line 80 of file ExponentialKernel.h.
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virtual |
initialize kernel
l | features of left-hand side |
r | features of right-hand side |
Reimplemented from CDotKernel.
Definition at line 49 of file ExponentialKernel.cpp.
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protectedvirtual |
Can (optionally) be overridden to post-initialize some member variables which are not PARAMETER::ADD'ed. Make sure that at first the overridden method BASE_CLASS::LOAD_SERIALIZABLE_POST is called.
ShogunException | Will be thrown if an error occurres. |
Reimplemented from CKernel.
Definition at line 64 of file ExponentialKernel.cpp.
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protected |
distance
Definition at line 117 of file ExponentialKernel.h.
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protected |
width
Definition at line 119 of file ExponentialKernel.h.