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SHOGUN
4.1.0
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The Custom Kernel allows for custom user provided kernel matrices.
For squared training matrices it allows to store only the upper triangle of the kernel to save memory: Full symmetric kernel matrices can be stored as is or can be internally converted into (or directly given in) upper triangle representation. Also note that values are stored as 32bit floats.
The custom kernel supports subsets each on the rows and the columns. See documentation in CFeatures, CLabels how this works. The interface is similar.
在文件 CustomKernel.h 第 36 行定义.
Public 成员函数 | |
| CCustomKernel () | |
| CCustomKernel (CKernel *k) | |
| CCustomKernel (SGMatrix< float64_t > km) | |
| CCustomKernel (SGMatrix< float32_t > km) | |
| virtual | ~CCustomKernel () |
| virtual bool | dummy_init (int32_t rows, int32_t cols) |
| virtual bool | init (CFeatures *l, CFeatures *r) |
| virtual void | cleanup () |
| void | cleanup_custom () |
| virtual EKernelType | get_kernel_type () |
| virtual EFeatureType | get_feature_type () |
| virtual EFeatureClass | get_feature_class () |
| virtual const char * | get_name () const |
| bool | set_triangle_kernel_matrix_from_triangle (SGVector< float64_t > tri_kernel_matrix) |
| template<class T > | |
| bool | set_triangle_kernel_matrix_from_triangle_generic (SGVector< T > tri_kernel_matrix) |
| bool | set_triangle_kernel_matrix_from_full (SGMatrix< float64_t > full_kernel_matrix) |
| template<class T > | |
| bool | set_triangle_kernel_matrix_from_full_generic (SGMatrix< T > full_kernel_matrix) |
| bool | set_full_kernel_matrix_from_full (SGMatrix< float32_t > full_kernel_matrix, bool check_symmetry=false) |
| bool | set_full_kernel_matrix_from_full (SGMatrix< float64_t > full_kernel_matrix, bool check_symmetry=false) |
| virtual void | add_row_subset (SGVector< index_t > subset) |
| virtual void | add_row_subset_in_place (SGVector< index_t > subset) |
| virtual void | remove_row_subset () |
| virtual void | remove_all_row_subsets () |
| virtual void | row_subset_changed_post () |
| virtual void | add_col_subset (SGVector< index_t > subset) |
| virtual void | add_col_subset_in_place (SGVector< index_t > subset) |
| virtual void | remove_col_subset () |
| virtual void | remove_all_col_subsets () |
| virtual void | col_subset_changed_post () |
| virtual int32_t | get_num_vec_lhs () |
| virtual int32_t | get_num_vec_rhs () |
| virtual bool | has_features () |
| SGMatrix< float32_t > | get_float32_kernel_matrix () |
| float64_t | kernel (int32_t idx_a, int32_t idx_b) |
| SGMatrix< float64_t > | get_kernel_matrix () |
| template<class T > | |
| SGMatrix< T > | get_kernel_matrix () |
| SGVector< float64_t > | get_kernel_diagonal (SGVector< float64_t > preallocated=SGVector< float64_t >()) |
| virtual SGVector< float64_t > | get_kernel_col (int32_t j) |
| virtual SGVector< float64_t > | get_kernel_row (int32_t i) |
| virtual float64_t | sum_symmetric_block (index_t block_begin, index_t block_size, bool no_diag=true) |
| virtual float64_t | sum_block (index_t block_begin_row, index_t block_begin_col, index_t block_size_row, index_t block_size_col, bool no_diag=false) |
| virtual SGVector< float64_t > | row_wise_sum_symmetric_block (index_t block_begin, index_t block_size, bool no_diag=true) |
| virtual SGMatrix< float64_t > | row_wise_sum_squared_sum_symmetric_block (index_t block_begin, index_t block_size, bool no_diag=true) |
| virtual SGVector< float64_t > | row_col_wise_sum_block (index_t block_begin_row, index_t block_begin_col, index_t block_size_row, index_t block_size_col, bool no_diag=false) |
| 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 () |
| 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 更多... | |
| 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 SGVector< float64_t > | get_subkernel_weights () |
| virtual void | set_subkernel_weights (SGVector< float64_t > weights) |
| virtual SGMatrix< float64_t > | get_parameter_gradient (const TParameter *param, index_t index=-1) |
| virtual SGVector< float64_t > | get_parameter_gradient_diagonal (const TParameter *param, index_t index=-1) |
| virtual CSGObject * | shallow_copy () const |
| virtual CSGObject * | deep_copy () const |
| virtual bool | is_generic (EPrimitiveType *generic) const |
| template<class T > | |
| void | set_generic () |
| template<> | |
| void | set_generic () |
| template<> | |
| void | set_generic () |
| template<> | |
| void | set_generic () |
| template<> | |
| void | set_generic () |
| template<> | |
| void | set_generic () |
| template<> | |
| void | set_generic () |
| template<> | |
| void | set_generic () |
| template<> | |
| void | set_generic () |
| template<> | |
| void | set_generic () |
| template<> | |
| void | set_generic () |
| template<> | |
| void | set_generic () |
| template<> | |
| void | set_generic () |
| template<> | |
| void | set_generic () |
| template<> | |
| void | set_generic () |
| template<> | |
| 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 () |
| SGStringList< char > | get_modelsel_names () |
| void | print_modsel_params () |
| char * | get_modsel_param_descr (const char *param_name) |
| index_t | get_modsel_param_index (const char *param_name) |
| void | build_gradient_parameter_dictionary (CMap< TParameter *, CSGObject * > *dict) |
| virtual void | update_parameter_hash () |
| virtual bool | parameter_hash_changed () |
| virtual bool | equals (CSGObject *other, float64_t accuracy=0.0, bool tolerant=false) |
| virtual CSGObject * | clone () |
静态 Public 成员函数 | |
| static CKernel * | obtain_from_generic (CSGObject *kernel) |
Public 属性 | |
| SGIO * | io |
| Parallel * | parallel |
| Version * | version |
| Parameter * | m_parameters |
| Parameter * | m_model_selection_parameters |
| Parameter * | m_gradient_parameters |
| uint32_t | m_hash |
Protected 成员函数 | |
| virtual float64_t | compute (int32_t row, int32_t col) |
| void | set_property (EKernelProperty p) |
| void | unset_property (EKernelProperty p) |
| void | set_is_initialized (bool p_init) |
| int32_t | compute_row_start (int64_t offs, int32_t n, bool symmetric) |
| virtual void | load_serializable_post () throw (ShogunException) |
| virtual void | save_serializable_pre () throw (ShogunException) |
| virtual void | save_serializable_post () throw (ShogunException) |
| virtual void | register_params () |
| virtual void | load_serializable_pre () throw (ShogunException) |
静态 Protected 成员函数 | |
| template<class T > | |
| static void * | get_kernel_matrix_helper (void *p) |
Protected 属性 | |
| SGMatrix< float32_t > | kmatrix |
| bool | upper_diagonal |
| bool | m_is_symmetric |
| CSubsetStack * | m_row_subset_stack |
| CSubsetStack * | m_col_subset_stack |
| bool | m_free_km |
| int32_t | cache_size |
| cache_size in MB 更多... | |
| KERNELCACHE_ELEM * | kernel_matrix |
| CFeatures * | lhs |
| feature vectors to occur on left hand side 更多... | |
| CFeatures * | rhs |
| feature vectors to occur on right hand side 更多... | |
| bool | lhs_equals_rhs |
| lhs 更多... | |
| int32_t | num_lhs |
| number of feature vectors on left hand side 更多... | |
| int32_t | num_rhs |
| number of feature vectors on right hand side 更多... | |
| float64_t | combined_kernel_weight |
| bool | optimization_initialized |
| EOptimizationType | opt_type |
| uint64_t | properties |
| CKernelNormalizer * | normalizer |
| CCustomKernel | ( | ) |
default constructor
在文件 CustomKernel.cpp 第 48 行定义.
| CCustomKernel | ( | CKernel * | k | ) |
constructor
compute custom kernel from given kernel matrix
| k | kernel matrix |
在文件 CustomKernel.cpp 第 55 行定义.
| CCustomKernel | ( | SGMatrix< float64_t > | km | ) |
constructor
sets full kernel matrix from full kernel matrix (from double precision floats)
| km | kernel matrix |
在文件 CustomKernel.cpp 第 76 行定义.
| CCustomKernel | ( | SGMatrix< float32_t > | km | ) |
constructor
sets full kernel matrix from full kernel matrix (from double precision floats)
| km | kernel matrix |
在文件 CustomKernel.cpp 第 85 行定义.
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virtual |
在文件 CustomKernel.cpp 第 94 行定义.
Adds a column subset of indices on top of the current subsets (possibly subset of subset). Every call causes a new active index vector to be stored. Added subsets can be removed one-by-one. If this is not needed, add_col_subset_in_place() should be used (does not store intermediate index vectors)
Calls col_subset_changed_post() afterwards
| subset | subset of indices to add |
在文件 CustomKernel.cpp 第 422 行定义.
Sets/changes latest added column subset. This allows to add multiple subsets with in-place memory requirements. They cannot be removed one-by-one afterwards, only the latest active can. If this is needed, use add_col_subset(). If no subset is active, this just adds.
Calls col_subset_changed_post() afterwards
| subset | subset of indices to replace the latest one with. |
在文件 CustomKernel.cpp 第 428 行定义.
Adds a row subset of indices on top of the current subsets (possibly subset of subset). Every call causes a new active index vector to be stored. Added subsets can be removed one-by-one. If this is not needed, add_row_subset_in_place() should be used (does not store intermediate index vectors)
Calls row_subset_changed_post() afterwards
| subset | subset of indices to add |
在文件 CustomKernel.cpp 第 390 行定义.
Sets/changes latest added row subset. This allows to add multiple subsets with in-place memory requirements. They cannot be removed one-by-one afterwards, only the latest active can. If this is needed, use add_row_subset(). If no subset is active, this just adds.
Calls row_subset_changed_post() afterwards
| subset | subset of indices to replace the latest one with. |
在文件 CustomKernel.cpp 第 396 行定义.
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virtualinherited |
add vector*factor to 'virtual' normal vector
| vector_idx | index |
| weight | weight |
被 CCombinedKernel, CWeightedDegreeStringKernel, CWeightedDegreePositionStringKernel, CCommUlongStringKernel, CCommWordStringKernel, CLinearKernel, CLinearStringKernel , 以及 CWeightedCommWordStringKernel 重载.
在文件 Kernel.cpp 第 366 行定义.
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inherited |
Builds a dictionary of all parameters in SGObject as well of those of SGObjects that are parameters of this object. Dictionary maps parameters to the objects that own them.
| dict | dictionary of parameters to be built. |
在文件 SGObject.cpp 第 597 行定义.
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virtual |
| void cleanup_custom | ( | ) |
only cleanup stuff specific to Custom kernel
在文件 CustomKernel.cpp 第 372 行定义.
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virtualinherited |
for optimizable kernels, i.e. kernels where the weight vector can be computed explicitly (if it fits into memory)
被 CCombinedKernel, CWeightedDegreeStringKernel, CWeightedDegreePositionStringKernel, CCommUlongStringKernel, CCommWordStringKernel, CLinearKernel , 以及 CLinearStringKernel 重载.
在文件 Kernel.cpp 第 371 行定义.
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virtualinherited |
Creates a clone of the current object. This is done via recursively traversing all parameters, which corresponds to a deep copy. Calling equals on the cloned object always returns true although none of the memory of both objects overlaps.
在文件 SGObject.cpp 第 714 行定义.
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virtual |
method may be overwritten to update things that depend on subset
在文件 CustomKernel.cpp 第 446 行定义.
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protectedvirtual |
compute kernel function
works with subset
| row | row |
| col | col |
实现了 CKernel.
在文件 CustomKernel.h 第 580 行定义.
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virtualinherited |
computes output for a batch of examples in an optimized fashion (favorable if kernel supports it, i.e. has KP_BATCHEVALUATION. to the outputvector target (of length num_vec elements) the output for the examples enumerated in vec_idx are added. therefore make sure that it is initialized with ZERO. the following num_suppvec, IDX, alphas arguments are the number of support vectors, their indices and weights
被 CCombinedKernel, CWeightedDegreeStringKernel , 以及 CWeightedDegreePositionStringKernel 重载.
在文件 Kernel.cpp 第 359 行定义.
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virtualinherited |
compute by subkernel
| vector_idx | index |
| subkernel_contrib | subkernel contribution |
被 CCombinedKernel, CWeightedDegreeStringKernel , 以及 CWeightedDegreePositionStringKernel 重载.
在文件 Kernel.cpp 第 381 行定义.
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virtualinherited |
compute optimized
| vector_idx | index to compute |
被 CCombinedKernel, CWeightedDegreeStringKernel, CWeightedDegreePositionStringKernel, CCommWordStringKernel, CCommUlongStringKernel, CLinearKernel, CLinearStringKernel , 以及 CWeightedCommWordStringKernel 重载.
在文件 Kernel.cpp 第 353 行定义.
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protectedinherited |
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virtualinherited |
A deep copy. All the instance variables will also be copied.
在文件 SGObject.cpp 第 198 行定义.
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virtualinherited |
delete optimization
被 CCombinedKernel, CWeightedDegreeStringKernel, CWeightedDegreePositionStringKernel, CCommWordStringKernel, CCommUlongStringKernel, CLinearKernel , 以及 CLinearStringKernel 重载.
在文件 Kernel.cpp 第 347 行定义.
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virtual |
initialize kernel with dummy features
Kernels always need feature objects assigned. As the custom kernel does not really require this it creates some magic dummy features that only know about the number of vectors
removes subset before
| rows | features of left-hand side |
| cols | features of right-hand side |
在文件 CustomKernel.cpp 第 103 行定义.
Recursively compares the current SGObject to another one. Compares all registered numerical parameters, recursion upon complex (SGObject) parameters. Does not compare pointers!
May be overwritten but please do with care! Should not be necessary in most cases.
| other | object to compare with |
| accuracy | accuracy to use for comparison (optional) |
| tolerant | allows linient check on float equality (within accuracy) |
在文件 SGObject.cpp 第 618 行定义.
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inherited |
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inherited |
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virtual |
return feature class the kernel can deal with
实现了 CKernel.
在文件 CustomKernel.h 第 120 行定义.
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virtual |
return feature type the kernel can deal with
实现了 CKernel.
在文件 CustomKernel.h 第 114 行定义.
returns kernel matrix as is (not possible with subset)
在文件 CustomKernel.h 第 553 行定义.
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inherited |
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inherited |
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inherited |
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inherited |
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inherited |
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staticprotectedinherited |
helper for computing the kernel matrix in a parallel way
| p | thread parameters |
在文件 Kernel.cpp 第 803 行定义.
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virtual |
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inherited |
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inherited |
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inherited |
在文件 SGObject.cpp 第 498 行定义.
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inherited |
Returns description of a given parameter string, if it exists. SG_ERROR otherwise
| param_name | name of the parameter |
在文件 SGObject.cpp 第 522 行定义.
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inherited |
Returns index of model selection parameter with provided index
| param_name | name of model selection parameter |
在文件 SGObject.cpp 第 535 行定义.
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virtual |
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virtualinherited |
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virtualinherited |
get number of subkernels
被 CWeightedDegreeStringKernel, CWeightedDegreePositionStringKernel, CCombinedKernel , 以及 CProductKernel 重载.
在文件 Kernel.cpp 第 376 行定义.
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virtual |
get number of vectors of lhs features
works with subset
重载 CKernel .
在文件 CustomKernel.h 第 520 行定义.
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virtual |
get number of vectors of rhs features
works with subset
重载 CKernel .
在文件 CustomKernel.h 第 532 行定义.
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inherited |
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virtualinherited |
return derivative with respect to specified parameter
| param | the parameter |
| index | the index of the element if parameter is a vector |
被 CCombinedKernel, CProductKernel, CGaussianKernel , 以及 CPeriodicKernel 重载.
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virtualinherited |
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inherited |
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virtualinherited |
get subkernel weights
| num_weights | number of weights will be stored here |
被 CCombinedKernel, CWeightedDegreeStringKernel , 以及 CWeightedDegreePositionStringKernel 重载.
在文件 Kernel.cpp 第 387 行定义.
get subkernel weights (swig compatible)
被 CCombinedKernel 重载.
在文件 Kernel.cpp 第 393 行定义.
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virtual |
test whether features have been assigned to lhs and rhs
works with subset
重载 CKernel .
在文件 CustomKernel.h 第 544 行定义.
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inherited |
initialize kernel
removes subset before
| l | features of left-hand side |
| r | features of right-hand side |
重载 CKernel .
在文件 CustomKernel.cpp 第 108 行定义.
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virtualinherited |
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virtualinherited |
initialize optimization
| count | count |
| IDX | index |
| weights | weights |
被 CCombinedKernel, CWeightedDegreeStringKernel, CWeightedDegreePositionStringKernel, CCommWordStringKernel, CCommUlongStringKernel, CLinearKernel , 以及 CLinearStringKernel 重载.
在文件 Kernel.cpp 第 340 行定义.
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inherited |
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virtualinherited |
If the SGSerializable is a class template then TRUE will be returned and GENERIC is set to the type of the generic.
| generic | set to the type of the generic if returning TRUE |
在文件 SGObject.cpp 第 296 行定义.
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inherited |
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inherited |
list kernel
在文件 Kernel.cpp 第 221 行定义.
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inherited |
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virtualinherited |
Load this object from file. If it will fail (returning FALSE) then this object will contain inconsistent data and should not be used!
| file | where to load from |
| prefix | prefix for members |
在文件 SGObject.cpp 第 369 行定义.
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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. |
重载 CSGObject .
被 CWeightedDegreePositionStringKernel, CGaussianKernel, CInverseMultiQuadricKernel, CCircularKernel , 以及 CExponentialKernel 重载.
在文件 Kernel.cpp 第 441 行定义.
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protectedvirtualinherited | |||||||||||||
Can (optionally) be overridden to pre-initialize some member variables which are not PARAMETER::ADD'ed. Make sure that at first the overridden method BASE_CLASS::LOAD_SERIALIZABLE_PRE is called.
| ShogunException | will be thrown if an error occurs. |
被 CDynamicArray< T >, CDynamicArray< float64_t >, CDynamicArray< float32_t >, CDynamicArray< int32_t >, CDynamicArray< char >, CDynamicArray< bool > , 以及 CDynamicObjectArray 重载.
在文件 SGObject.cpp 第 421 行定义.
Obtains a kernel from a generic SGObject with error checking. Note that if passing NULL, result will be NULL
| kernel | Object to cast to CKernel, is not SG_REFed |
在文件 Kernel.cpp 第 409 行定义.
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virtualinherited |
在文件 SGObject.cpp 第 262 行定义.
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inherited |
prints all parameter registered for model selection and their type
在文件 SGObject.cpp 第 474 行定义.
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virtualinherited |
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protectedvirtualinherited |
Separate the function of parameter registration This can be the first stage of a general framework for cross-validation or other parameter-based operations
被 CSpectrumMismatchRBFKernel, CSNPStringKernel, CANOVAKernel, CSubsequenceStringKernel, CGaussianMatchStringKernel, CGaussianShortRealKernel, CTensorProductPairKernel, CDistanceKernel , 以及 CHistogramIntersectionKernel 重载.
在文件 Kernel.cpp 第 464 行定义.
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virtual |
removes all col subsets Calls subset_changed_post() afterwards
在文件 CustomKernel.cpp 第 440 行定义.
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virtual |
removes all row subsets Calls subset_changed_post() afterwards
在文件 CustomKernel.cpp 第 408 行定义.
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virtual |
removes that last added col subset from subset stack, if existing Calls subset_changed_post() afterwards
在文件 CustomKernel.cpp 第 434 行定义.
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virtualinherited |
remove lhs from kernel
被 CWeightedDegreeStringKernel, CWeightedDegreePositionStringKernel, CCombinedKernel, CCommUlongStringKernel , 以及 CProductKernel 重载.
在文件 Kernel.cpp 第 196 行定义.
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virtualinherited |
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virtualinherited |
takes all necessary steps if the rhs is removed from kernel
remove rhs from kernel
被 CCombinedKernel, CCommUlongStringKernel , 以及 CProductKernel 重载.
在文件 Kernel.cpp 第 208 行定义.
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virtual |
removes that last added row subset from subset stack, if existing Calls subset_changed_post() afterwards
在文件 CustomKernel.cpp 第 402 行定义.
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virtualinherited |
Computes row-wise/col-wise sum of kernel values. This method is useful while computing statistical estimation of mean/variance over kernel values but the kernel matrix is too huge to be fit inside memory.
| block_begin_row | the row index at which the block starts |
| block_begin_col | the col index at which the block starts |
| block_size_row | the number of rows in the block |
| block_size_col | the number of cols in the block |
For Example, block_begin_row 0, block_begin_col 4 and block_size_row 5, block_size_col 6 represents the block that starts at index (0,4) in the kernel matrix and goes upto (0+5-1,4+6-1) i.e. (4,9) both inclusive
| no_diag | if true (default is false), the diagonal elements are excluded from the row/col-wise sum, provided that block_size_row and block_size_col are same (i.e. the block is square). Otherwise, these are always added |
\[ v[i]=\sum_{j}k(i+\text{block-begin-row}, j+\text{block-begin-col}) \]
and rest block_size_col entries col-wise sum of kernel values computed as\[ v[\text{block-size-row}+j]=\sum_{i}k(i+\text{block-begin-row}, j+\text{block-begin-col}) \]
where \(i\in[0,\text{block-size-row}-1]\) and \(j\in[0,\text{block-size-col}-1]\)在文件 Kernel.cpp 第 749 行定义.
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virtual |
method may be overwritten to update things that depend on subset
在文件 CustomKernel.cpp 第 414 行定义.
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virtualinherited |
Computes row-wise/col-wise sum and squared sum of kernel values from a symmetric part of the kernel matrix that always is supposed to contain the main upper diagonal. This method is useful while computing statistical estimation of mean/variance over kernel values but the kernel matrix is too huge to be fit inside memory.
| block_begin | the row and col index at which the block starts |
| block_size | the number of rows and cols in the block |
For Example, block_begin 4 and block_size 5 represents the block that starts at index (4,4) in the kernel matrix and goes upto (4+5-1,4+5-1) i.e. (8,8) both inclusive
| no_diag | if true (default), the diagonal elements are excluded from the row/col-wise sum |
\[ v_0[i]=\sum_{j}k(i+\text{block-begin}, j+\text{block-begin}) \]
and second column contains the row-wise sum of squared kernel values\[ v_1[i]=\sum_{j}^k^2(i+\text{block-begin}, j+\text{block-begin}) \]
where \(i,j\in[0,\text{block-size}-1]\)在文件 Kernel.cpp 第 690 行定义.
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virtualinherited |
Computes row-wise/col-wise sum from a symmetric part of the kernel matrix that always is supposed to contain the main upper diagonal. This method is useful while computing statistical estimation of mean/variance over kernel values but the kernel matrix is too huge to be fit inside memory.
| block_begin | the row and col index at which the block starts |
| block_size | the number of rows and cols in the block |
For Example, block_begin 4 and block_size 5 represents the block that starts at index (4,4) in the kernel matrix and goes upto (4+5-1,4+5-1) i.e. (8,8) both inclusive
| no_diag | if true (default), the diagonal elements are excluded from the row/col-wise sum |
\[ v[i]=\sum_{j}k(i+\text{block-begin}, j+\text{block-begin}) \]
where \(i,j\in[0,\text{block-size}-1]\)在文件 Kernel.cpp 第 636 行定义.
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Save this object to file.
| file | where to save the object; will be closed during returning if PREFIX is an empty string. |
| prefix | prefix for members |
在文件 SGObject.cpp 第 314 行定义.
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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::SAVE_SERIALIZABLE_POST is called.
| ShogunException | Will be thrown if an error occurres. |
重载 CSGObject .
在文件 Kernel.cpp 第 456 行定义.
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Can (optionally) be overridden to pre-initialize some member variables which are not PARAMETER::ADD'ed. Make sure that at first the overridden method BASE_CLASS::SAVE_SERIALIZABLE_PRE is called.
| ShogunException | Will be thrown if an error occurres. |
重载 CSGObject .
在文件 Kernel.cpp 第 448 行定义.
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| bool set_full_kernel_matrix_from_full | ( | SGMatrix< float32_t > | full_kernel_matrix, |
| bool | check_symmetry = false |
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set full kernel matrix from full kernel matrix
for float32
works NOT with subset
| full_kernel_matrix | the original kernel matrix to be set from |
| check_symmetry | whether checking for symmetry of the kernel matrix is required |
在文件 CustomKernel.h 第 263 行定义.
| bool set_full_kernel_matrix_from_full | ( | SGMatrix< float64_t > | full_kernel_matrix, |
| bool | check_symmetry = false |
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set full kernel matrix from full kernel matrix
for float64
works NOT with subset
| full_kernel_matrix | the original kernel matrix to be set from |
| check_symmetry | whether checking for symmetry of the kernel matrix is required |
在文件 CustomKernel.h 第 294 行定义.
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在文件 SGObject.cpp 第 41 行定义.
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在文件 SGObject.cpp 第 46 行定义.
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在文件 SGObject.cpp 第 51 行定义.
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在文件 SGObject.cpp 第 56 行定义.
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在文件 SGObject.cpp 第 61 行定义.
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在文件 SGObject.cpp 第 66 行定义.
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在文件 SGObject.cpp 第 71 行定义.
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在文件 SGObject.cpp 第 76 行定义.
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在文件 SGObject.cpp 第 81 行定义.
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在文件 SGObject.cpp 第 86 行定义.
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在文件 SGObject.cpp 第 91 行定义.
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在文件 SGObject.cpp 第 96 行定义.
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在文件 SGObject.cpp 第 101 行定义.
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在文件 SGObject.cpp 第 106 行定义.
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在文件 SGObject.cpp 第 111 行定义.
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set generic type to T
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set the current kernel normalizer
被 CWeightedDegreeStringKernel 重载.
在文件 Kernel.cpp 第 135 行定义.
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set subkernel weights
| weights | new subkernel weights |
被 CCombinedKernel, CWeightedDegreeStringKernel , 以及 CWeightedDegreePositionStringKernel 重载.
在文件 Kernel.cpp 第 400 行定义.
set kernel matrix (only elements from upper triangle) from squared matrix
for float64's
works NOT with subset
在文件 CustomKernel.h 第 204 行定义.
| bool set_triangle_kernel_matrix_from_full_generic | ( | SGMatrix< T > | full_kernel_matrix | ) |
set kernel matrix (only elements from upper triangle) from squared matrix
works NOT with subset
在文件 CustomKernel.h 第 218 行定义.
set kernel matrix (only elements from upper triangle) from elements of upper triangle (concat'd), including the main diagonal
small variant for floats64's, triangle needs to have less than 2**32 elements
works NOT with subset
| tri_kernel_matrix | tri kernel matrix |
在文件 CustomKernel.h 第 139 行定义.
| bool set_triangle_kernel_matrix_from_triangle_generic | ( | SGVector< T > | tri_kernel_matrix | ) |
set kernel matrix (only elements from upper triangle) from elements of upper triangle (concat'd), including the main diagonal
big variant, allowing the triangle to have more than 2**31-1 elements
works NOT with subset
| tri_kernel_matrix | tri kernel matrix |
在文件 CustomKernel.h 第 162 行定义.
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A shallow copy. All the SGObject instance variables will be simply assigned and SG_REF-ed.
被 CGaussianKernel 重载.
在文件 SGObject.cpp 第 192 行定义.
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Computes sum of kernel values from a specified block. This method is useful while computing statistical estimation of mean/variance over kernel values but the kernel matrix is too huge to be fit inside memory.
| block_begin_row | the row index at which the block starts |
| block_begin_col | the col index at which the block starts |
| block_size_row | the number of rows in the block |
| block_size_col | the number of cols in the block |
For example, block_begin_row 0, block_begin_col 4 and block_size_row 5, block_size_col 6 represents the block that starts at index (0,4) in the kernel matrix and goes upto (0+5-1,4+6-1) i.e. (4,9) both inclusive
| no_diag | if true (default is false), the diagonal elements are excluded from the sum, provided that block_size_row and block_size_col are same (i.e. the block is square). Otherwise, these are always added |
\[ \sum_{i}\sum_{j}k(i+\text{block-begin-row}, j+\text{block-begin-col}) \]
where \(i\in[0,\text{block-size-row}-1]\) and \(j\in[0,\text{block-size-col}-1]\)在文件 Kernel.cpp 第 590 行定义.
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virtualinherited |
Computes sum from a symmetric part of the kernel matrix that always is supposed to contain the main upper diagonal. This method is useful while computing statistical estimation of mean/variance over kernel values but the kernel matrix is too huge to be fit inside memory.
| block_begin | the row and col index at which the block starts |
| block_size | the number of rows and cols in the block |
For example, block_begin 4 and block_size 5 represents the block that starts at index (4,4) in the kernel matrix and goes upto (4+5-1,4+5-1) i.e. (8,8) both inclusive
| no_diag | if true (default), the diagonal elements are excluded from the sum |
\[ \sum_{i}\sum_{j}k(i+\text{block-begin}, j+\text{block-begin}) \]
where \(i,j\in[0,\text{block-size}-1]\)在文件 Kernel.cpp 第 537 行定义.
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unset generic type
this has to be called in classes specializing a template class
在文件 SGObject.cpp 第 303 行定义.
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Updates the hash of current parameter combination
在文件 SGObject.cpp 第 248 行定义.
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io
在文件 SGObject.h 第 369 行定义.
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kernel matrix
在文件 CustomKernel.h 第 608 行定义.
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column subset stack
在文件 CustomKernel.h 第 620 行定义.
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indicates whether kernel matrix is to be freed in destructor
在文件 CustomKernel.h 第 623 行定义.
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parameters wrt which we can compute gradients
在文件 SGObject.h 第 384 行定义.
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Hash of parameter values
在文件 SGObject.h 第 387 行定义.
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whether the kernel matrix is symmetric
在文件 CustomKernel.h 第 614 行定义.
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model selection parameters
在文件 SGObject.h 第 381 行定义.
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parameters
在文件 SGObject.h 第 378 行定义.
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row subset stack
在文件 CustomKernel.h 第 617 行定义.
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parallel
在文件 SGObject.h 第 372 行定义.
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upper diagonal
在文件 CustomKernel.h 第 611 行定义.
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version
在文件 SGObject.h 第 375 行定义.
