SHOGUN
v3.2.0
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Template class SparseFeatures implements sparse matrices.
Features are an array of SGSparseVector. Within each vector feat_index are sorted (increasing).
Sparse feature vectors can be accessed via get_sparse_feature_vector() and should be freed (this operation is a NOP in most cases) via free_sparse_feature_vector().
As this is a template class it can directly be used for different data types like sparse matrices of real valued, integer, byte etc type.
(Partly) subset access is supported for this feature type. Simple use the (inherited) add_subset(), remove_subset() functions. If done, all calls that work with features are translated to the subset. See comments to find out whether it is supported for that method. See also CFeatures class documentation
在文件 HashedDocConverter.h 第 24 行定义.
Public 成员函数 | |
CSparseFeatures (int32_t size=0) | |
CSparseFeatures (SGSparseMatrix< ST > sparse) | |
CSparseFeatures (SGMatrix< ST > dense) | |
CSparseFeatures (const CSparseFeatures &orig) | |
CSparseFeatures (CFile *loader) | |
virtual | ~CSparseFeatures () |
void | free_sparse_feature_matrix () |
void | free_sparse_features () |
virtual CFeatures * | duplicate () const |
ST | get_feature (int32_t num, int32_t index) |
SGVector< ST > | get_full_feature_vector (int32_t num) |
virtual int32_t | get_nnz_features_for_vector (int32_t num) |
SGSparseVector< ST > | get_sparse_feature_vector (int32_t num) |
ST | dense_dot (ST alpha, int32_t num, ST *vec, int32_t dim, ST b) |
void | add_to_dense_vec (float64_t alpha, int32_t num, float64_t *vec, int32_t dim, bool abs_val=false) |
void | free_sparse_feature_vector (int32_t num) |
SGSparseVector< ST > * | get_sparse_feature_matrix (int32_t &num_feat, int32_t &num_vec) |
SGSparseMatrix< ST > | get_sparse_feature_matrix () |
CSparseFeatures< ST > * | get_transposed () |
SGSparseVector< ST > * | get_transposed (int32_t &num_feat, int32_t &num_vec) |
void | set_sparse_feature_matrix (SGSparseMatrix< ST > sm) |
SGMatrix< ST > | get_full_feature_matrix () |
virtual void | set_full_feature_matrix (SGMatrix< ST > full) |
virtual bool | apply_preprocessor (bool force_preprocessing=false) |
void | obtain_from_simple (CDenseFeatures< ST > *sf) |
virtual int32_t | get_num_vectors () const |
int32_t | get_num_features () const |
int32_t | set_num_features (int32_t num) |
virtual EFeatureClass | get_feature_class () const |
virtual EFeatureType | get_feature_type () const |
void | free_feature_vector (int32_t num) |
int64_t | get_num_nonzero_entries () |
float64_t * | compute_squared (float64_t *sq) |
float64_t | compute_squared_norm (CSparseFeatures< float64_t > *lhs, float64_t *sq_lhs, int32_t idx_a, CSparseFeatures< float64_t > *rhs, float64_t *sq_rhs, int32_t idx_b) |
void | load (CFile *loader) |
SGVector< float64_t > | load_with_labels (CLibSVMFile *loader) |
void | save (CFile *writer) |
void | save_with_labels (CLibSVMFile *writer, SGVector< float64_t > labels) |
void | sort_features () |
virtual int32_t | get_dim_feature_space () const |
virtual float64_t | dot (int32_t vec_idx1, CDotFeatures *df, int32_t vec_idx2) |
virtual float64_t | dense_dot (int32_t vec_idx1, const float64_t *vec2, int32_t vec2_len) |
virtual void * | get_feature_iterator (int32_t vector_index) |
virtual bool | get_next_feature (int32_t &index, float64_t &value, void *iterator) |
virtual void | free_feature_iterator (void *iterator) |
virtual CFeatures * | copy_subset (SGVector< index_t > indices) |
virtual const char * | get_name () const |
template<> | |
void | add_to_dense_vec (float64_t alpha, int32_t num, float64_t *vec, int32_t dim, bool abs_val) |
template<> | |
void | obtain_from_simple (CDenseFeatures< complex128_t > *sf) |
template<> | |
float64_t * | compute_squared (float64_t *sq) |
template<> | |
float64_t | dot (int32_t vec_idx1, CDotFeatures *df, int32_t vec_idx2) |
template<> | |
float64_t | dense_dot (int32_t vec_idx1, const float64_t *vec2, int32_t vec2_len) |
template<> | |
bool | get_next_feature (int32_t &index, float64_t &value, void *iterator) |
virtual float64_t | dense_dot_sgvec (int32_t vec_idx1, const SGVector< float64_t > vec2) |
virtual void | dense_dot_range (float64_t *output, int32_t start, int32_t stop, float64_t *alphas, float64_t *vec, int32_t dim, float64_t b) |
virtual void | dense_dot_range_subset (int32_t *sub_index, int32_t num, float64_t *output, float64_t *alphas, float64_t *vec, int32_t dim, float64_t b) |
float64_t | get_combined_feature_weight () |
void | set_combined_feature_weight (float64_t nw) |
SGMatrix< float64_t > | get_computed_dot_feature_matrix () |
SGVector< float64_t > | get_computed_dot_feature_vector (int32_t num) |
void | benchmark_add_to_dense_vector (int32_t repeats=5) |
void | benchmark_dense_dot_range (int32_t repeats=5) |
virtual SGVector< float64_t > | get_mean () |
virtual SGMatrix< float64_t > | get_cov () |
virtual void | add_preprocessor (CPreprocessor *p) |
virtual void | del_preprocessor (int32_t num) |
CPreprocessor * | get_preprocessor (int32_t num) const |
void | set_preprocessed (int32_t num) |
bool | is_preprocessed (int32_t num) const |
int32_t | get_num_preprocessed () const |
int32_t | get_num_preprocessors () const |
void | clean_preprocessors () |
void | list_preprocessors () |
int32_t | get_cache_size () const |
virtual bool | reshape (int32_t num_features, int32_t num_vectors) |
void | list_feature_obj () const |
bool | check_feature_compatibility (CFeatures *f) const |
bool | has_property (EFeatureProperty p) const |
void | set_property (EFeatureProperty p) |
void | unset_property (EFeatureProperty p) |
virtual CFeatures * | create_merged_copy (CList *others) |
virtual CFeatures * | create_merged_copy (CFeatures *other) |
virtual void | add_subset (SGVector< index_t > subset) |
virtual void | remove_subset () |
virtual void | remove_all_subsets () |
virtual CSubsetStack * | get_subset_stack () |
virtual void | subset_changed_post () |
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="", int32_t param_version=Version::get_version_parameter()) |
virtual bool | load_serializable (CSerializableFile *file, const char *prefix="", int32_t param_version=Version::get_version_parameter()) |
DynArray< TParameter * > * | load_file_parameters (const SGParamInfo *param_info, int32_t file_version, CSerializableFile *file, const char *prefix="") |
DynArray< TParameter * > * | load_all_file_parameters (int32_t file_version, int32_t current_version, CSerializableFile *file, const char *prefix="") |
void | map_parameters (DynArray< TParameter * > *param_base, int32_t &base_version, DynArray< const SGParamInfo * > *target_param_infos) |
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 bool | update_parameter_hash () |
virtual bool | equals (CSGObject *other, float64_t accuracy=0.0) |
virtual CSGObject * | clone () |
静态 Public 成员函数 | |
static void * | dense_dot_range_helper (void *p) |
static SGVector< float64_t > | get_mean (CDotFeatures *lhs, CDotFeatures *rhs) |
static SGMatrix< float64_t > | compute_cov (CDotFeatures *lhs, CDotFeatures *rhs) |
Public 属性 | |
SGIO * | io |
Parallel * | parallel |
Version * | version |
Parameter * | m_parameters |
Parameter * | m_model_selection_parameters |
Parameter * | m_gradient_parameters |
ParameterMap * | m_parameter_map |
uint32_t | m_hash |
Protected 成员函数 | |
virtual SGSparseVectorEntry< ST > * | compute_sparse_feature_vector (int32_t num, int32_t &len, SGSparseVectorEntry< ST > *target=NULL) |
void | display_progress (int32_t start, int32_t stop, int32_t v) |
virtual TParameter * | migrate (DynArray< TParameter * > *param_base, const SGParamInfo *target) |
virtual void | one_to_one_migration_prepare (DynArray< TParameter * > *param_base, const SGParamInfo *target, TParameter *&replacement, TParameter *&to_migrate, char *old_name=NULL) |
virtual void | load_serializable_pre () throw (ShogunException) |
virtual void | load_serializable_post () throw (ShogunException) |
virtual void | save_serializable_pre () throw (ShogunException) |
virtual void | save_serializable_post () throw (ShogunException) |
Protected 属性 | |
SGSparseMatrix< ST > | sparse_feature_matrix |
array of sparse vectors of size num_vectors 更多... | |
CCache< SGSparseVectorEntry< ST > > * | feature_cache |
float64_t | combined_weight |
feature weighting in combined dot features 更多... | |
CSubsetStack * | m_subset_stack |
CSparseFeatures | ( | int32_t | size = 0 | ) |
CSparseFeatures | ( | SGSparseMatrix< ST > | sparse | ) |
convenience constructor that creates sparse features from sparse features
sparse | sparse matrix |
在文件 SparseFeatures.cpp 第 21 行定义.
CSparseFeatures | ( | SGMatrix< ST > | dense | ) |
convenience constructor that creates sparse features from dense features
dense | dense feature matrix |
在文件 SparseFeatures.cpp 第 29 行定义.
CSparseFeatures | ( | const CSparseFeatures< ST > & | orig | ) |
copy constructor
在文件 SparseFeatures.cpp 第 37 行定义.
CSparseFeatures | ( | CFile * | loader | ) |
constructor loading features from file
loader | File object to load data from |
在文件 SparseFeatures.cpp 第 46 行定义.
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virtual |
default destructor
在文件 SparseFeatures.cpp 第 54 行定义.
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virtualinherited |
adds a subset of indices on top of the current subsets (possibly subset o subset. Calls subset_changed_post() afterwards
subset | subset of indices to add |
被 CCombinedFeatures 重载.
在文件 Features.cpp 第 307 行定义.
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add a sparse feature vector onto a dense one dense+=alpha*sparse
possible with subset
alpha | scalar to multiply with |
num | index of feature vector |
vec | dense vector |
dim | length of the dense vector |
abs_val | if true, do dense+=alpha*abs(sparse) |
实现了 CDotFeatures.
在文件 SparseFeatures.cpp 第 163 行定义.
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add vector 1 multiplied with alpha to dense vector2
alpha | scalar alpha |
vec_idx1 | index of first vector |
vec2 | pointer to real valued vector |
vec2_len | length of real valued vector |
abs_val | if true add the absolute value |
实现了 CDotFeatures.
在文件 SparseFeatures.cpp 第 197 行定义.
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apply preprocessor
possible with subset
force_preprocessing | if preprocssing shall be forced |
在文件 SparseFeatures.cpp 第 286 行定义.
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run benchmark for add_to_dense_vec
在文件 DotFeatures.cpp 第 318 行定义.
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run benchmark for dense_dot_range
在文件 DotFeatures.cpp 第 341 行定义.
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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 1156 行定义.
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check feature compatibility
f | features to check for compatibility |
在文件 Features.cpp 第 280 行定义.
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clears all preprocs
在文件 Features.cpp 第 113 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 1273 行定义.
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compute feature vector for sample num if target is set the vector is written to target len is returned by reference
NOT IMPLEMENTED!
num | num |
len | len |
target | target |
在文件 SparseFeatures.cpp 第 587 行定义.
compute a^2 on all feature vectors
possible with subset
sq | the square for each vector is stored in here |
在文件 SparseFeatures.cpp 第 365 行定义.
在文件 SparseFeatures.cpp 第 384 行定义.
float64_t compute_squared_norm | ( | CSparseFeatures< float64_t > * | lhs, |
float64_t * | sq_lhs, | ||
int32_t | idx_a, | ||
CSparseFeatures< float64_t > * | rhs, | ||
float64_t * | sq_rhs, | ||
int32_t | idx_b | ||
) |
compute (a-b)^2 (== a^2+b^2-2ab) usually called by kernels'/distances' compute functions works on two feature vectors, although it is a member of a single feature: can either be called by lhs or rhs.
possible wiht subsets on lhs or rhs
lhs | left-hand side features |
sq_lhs | squared values of left-hand side |
idx_a | index of left-hand side's vector to compute |
rhs | right-hand side features |
sq_rhs | squared values of right-hand side |
idx_b | index of right-hand side's vector to compute |
在文件 SparseFeatures.cpp 第 390 行定义.
Creates a new CFeatures instance containing copies of the elements which are specified by the provided indices.
indices | indices of feature elements to copy |
重载 CFeatures .
在文件 SparseFeatures.cpp 第 565 行定义.
Takes a list of feature instances and returns a new instance being a concatenation of a copy of this instace's data and the given instancess data. Note that the feature types have to be equal.
NOT IMPLEMENTED!
others | list of feature objects to append |
被 CDenseFeatures< ST >, CDenseFeatures< uint32_t >, CDenseFeatures< float64_t >, CDenseFeatures< T > , 以及 CDenseFeatures< uint16_t > 重载.
在文件 Features.h 第 229 行定义.
Convenience method for method with same name and list as parameter.
NOT IMPLEMENTED!
other | feature object to append |
被 CDenseFeatures< ST >, CDenseFeatures< uint32_t >, CDenseFeatures< float64_t >, CDenseFeatures< T >, CDenseFeatures< uint16_t > , 以及 CCombinedFeatures 重载.
在文件 Features.h 第 243 行定义.
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A deep copy. All the instance variables will also be copied.
在文件 SGObject.h 第 126 行定义.
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ST dense_dot | ( | ST | alpha, |
int32_t | num, | ||
ST * | vec, | ||
int32_t | dim, | ||
ST | b | ||
) |
compute the dot product between dense weights and a sparse feature vector alpha * sparse^T * w + b
possible with subset
alpha | scalar to multiply with |
num | index of feature vector |
vec | dense vector to compute dot product with |
dim | length of the dense vector |
b | bias |
在文件 SparseFeatures.cpp 第 155 行定义.
compute dot product between vector1 and a dense vector
possible with subset
vec_idx1 | index of first vector |
vec2 | pointer to real valued vector |
vec2_len | length of real valued vector |
实现了 CDotFeatures.
在文件 SparseFeatures.cpp 第 480 行定义.
compute dot product between vector1 and a dense vector
vec_idx1 | index of first vector |
vec2 | pointer to real valued vector |
vec2_len | length of real valued vector |
实现了 CDotFeatures.
在文件 SparseFeatures.cpp 第 510 行定义.
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Compute the dot product for a range of vectors. This function makes use of dense_dot alphas[i] * sparse[i]^T * w + b
output | result for the given vector range |
start | start vector range from this idx |
stop | stop vector range at this idx |
alphas | scalars to multiply with, may be NULL |
vec | dense vector to compute dot product with |
dim | length of the dense vector |
b | bias |
note that the result will be written to output[0...(stop-start-1)]
被 CCombinedDotFeatures , 以及 CHashedWDFeaturesTransposed 重载.
在文件 DotFeatures.cpp 第 67 行定义.
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staticinherited |
Compute the dot product for a range of vectors. This function is called by the threads created in dense_dot_range
在文件 DotFeatures.cpp 第 231 行定义.
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virtualinherited |
Compute the dot product for a subset of vectors. This function makes use of dense_dot alphas[i] * sparse[i]^T * w + b
sub_index | index for which to compute outputs |
num | length of index |
output | result for the given vector range |
alphas | scalars to multiply with, may be NULL |
vec | dense vector to compute dot product with |
dim | length of the dense vector |
b | bias |
被 CCombinedDotFeatures , 以及 CHashedWDFeaturesTransposed 重载.
在文件 DotFeatures.cpp 第 153 行定义.
compute dot product between vector1 and a dense vector
vec_idx1 | index of first vector |
vec2 | dense vector |
被 CHashedDocDotFeatures 重载.
在文件 DotFeatures.cpp 第 62 行定义.
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display progress output
start | minimum value |
stop | maximum value |
v | current value |
在文件 DotFeatures.cpp 第 528 行定义.
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compute dot product between vector1 and vector2, appointed by their indices
possible with subset of this instance and of DotFeatures
vec_idx1 | index of first vector |
df | DotFeatures (of same kind) to compute dot product with |
vec_idx2 | index of second vector |
实现了 CDotFeatures.
在文件 SparseFeatures.cpp 第 455 行定义.
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compute dot product between vector1 and vector2, appointed by their indices
vec_idx1 | index of first vector |
df | DotFeatures (of same kind) to compute dot product with |
vec_idx2 | index of second vector |
实现了 CDotFeatures.
在文件 SparseFeatures.cpp 第 473 行定义.
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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) |
在文件 SGObject.cpp 第 1177 行定义.
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clean up iterator call this function with the iterator returned by get_first_feature
iterator | as returned by get_first_feature |
实现了 CDotFeatures.
在文件 SparseFeatures.cpp 第 557 行定义.
void free_feature_vector | ( | int32_t | num | ) |
free feature vector
possible with subset
num | index of vector in cache |
在文件 SparseFeatures.cpp 第 347 行定义.
void free_sparse_feature_matrix | ( | ) |
void free_sparse_feature_vector | ( | int32_t | num | ) |
free sparse feature vector
possible with subset
num | index of this vector in the cache |
在文件 SparseFeatures.cpp 第 203 行定义.
void free_sparse_features | ( | ) |
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compute the feature matrix in feature space
在文件 DotFeatures.cpp 第 284 行定义.
compute the feature vector in feature space
在文件 DotFeatures.cpp 第 305 行定义.
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obtain the dimensionality of the feature space
(not mix this up with the dimensionality of the input space, usually obtained via get_num_features())
实现了 CDotFeatures.
在文件 SparseFeatures.cpp 第 450 行定义.
ST get_feature | ( | int32_t | num, |
int32_t | index | ||
) |
get a single feature
possible with subset
num | number of feature vector to retrieve |
index | index of feature in this vector |
在文件 SparseFeatures.cpp 第 64 行定义.
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virtual |
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iterate over the non-zero features
call get_feature_iterator first, followed by get_next_feature and free_feature_iterator to cleanup
possible with subset
vector_index | the index of the vector over whose components to iterate over |
实现了 CDotFeatures.
在文件 SparseFeatures.cpp 第 517 行定义.
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SGMatrix< ST > get_full_feature_matrix | ( | ) |
gets a copy of a full feature matrix
possible with subset
在文件 SparseFeatures.cpp 第 243 行定义.
SGVector< ST > get_full_feature_vector | ( | int32_t | num | ) |
get the fully expanded dense feature vector num
num | index of feature vector |
在文件 SparseFeatures.cpp 第 77 行定义.
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在文件 SGObject.cpp 第 1060 行定义.
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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 1084 行定义.
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Returns index of model selection parameter with provided index
param_name | name of model selection parameter |
在文件 SGObject.cpp 第 1097 行定义.
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iterate over the non-zero features
call this function with the iterator returned by get_first_feature and call free_feature_iterator to cleanup
index | is returned by reference (-1 when not available) |
value | is returned by reference |
iterator | as returned by get_first_feature |
实现了 CDotFeatures.
在文件 SparseFeatures.cpp 第 536 行定义.
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virtual |
iterate over the non-zero features
call this function with the iterator returned by get_feature_iterator and call free_feature_iterator to cleanup
index | is returned by reference (-1 when not available) |
value | is returned by reference |
iterator | as returned by get_feature_iterator |
实现了 CDotFeatures.
在文件 SparseFeatures.cpp 第 550 行定义.
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get number of non-zero features in vector
num | which vector |
实现了 CDotFeatures.
在文件 SparseFeatures.cpp 第 85 行定义.
int32_t get_num_features | ( | ) | const |
int64_t get_num_nonzero_entries | ( | ) |
get number of non-zero entries in sparse feature matrix
在文件 SparseFeatures.cpp 第 355 行定义.
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get number of feature vectors, possibly of subset
实现了 CFeatures.
在文件 SparseFeatures.cpp 第 324 行定义.
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SGSparseVector<ST>* get_sparse_feature_matrix | ( | int32_t & | num_feat, |
int32_t & | num_vec | ||
) |
get the pointer to the sparse feature matrix num_feat,num_vectors are returned by reference
not possible with subset
num_feat | number of features in matrix |
num_vec | number of vectors in matrix |
SGSparseMatrix< ST > get_sparse_feature_matrix | ( | ) |
get the sparse feature matrix
not possible with subset
在文件 SparseFeatures.cpp 第 211 行定义.
SGSparseVector< ST > get_sparse_feature_vector | ( | int32_t | num | ) |
get sparse feature vector for sample num from the matrix as it is if matrix is initialized, else return preprocessed compute_feature_vector
possible with subset
num | index of feature vector |
在文件 SparseFeatures.cpp 第 93 行定义.
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virtualinherited |
CSparseFeatures< ST > * get_transposed | ( | ) |
get a transposed copy of the features
not possible with subset
在文件 SparseFeatures.cpp 第 219 行定义.
SGSparseVector<ST>* get_transposed | ( | int32_t & | num_feat, |
int32_t & | num_vec | ||
) |
compute and return the transpose of the sparse feature matrix which will be prepocessed. num_feat, num_vectors are returned by reference caller has to clean up
possible with subset
num_feat | number of features in matrix |
num_vec | number of vectors in matrix |
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check if features have given property
p | feature property |
在文件 Features.cpp 第 292 行定义.
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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 228 行定义.
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get whether specified preprocessor was already applied
num | index of preprocessor in list |
在文件 Features.cpp 第 146 行定义.
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list feature object
在文件 Features.cpp 第 168 行定义.
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print preprocessors
在文件 Features.cpp 第 128 行定义.
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load features from file
any subset is removed before
loader | File object to load data from |
重载 CFeatures .
在文件 SparseFeatures.cpp 第 633 行定义.
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inherited |
maps all parameters of this instance to the provided file version and loads all parameter data from the file into an array, which is sorted (basically calls load_file_parameter(...) for all parameters and puts all results into a sorted array)
file_version | parameter version of the file |
current_version | version from which mapping begins (you want to use Version::get_version_parameter() for this in most cases) |
file | file to load from |
prefix | prefix for members |
在文件 SGObject.cpp 第 633 行定义.
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inherited |
loads some specified parameters from a file with a specified version The provided parameter info has a version which is recursively mapped until the file parameter version is reached. Note that there may be possibly multiple parameters in the mapping, therefore, a set of TParameter instances is returned
param_info | information of parameter |
file_version | parameter version of the file, must be <= provided parameter version |
file | file to load from |
prefix | prefix for members |
在文件 SGObject.cpp 第 474 行定义.
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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 |
param_version | (optional) a parameter version different to (this is mainly for testing, better do not use) |
在文件 SGObject.cpp 第 305 行定义.
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protectedvirtualinherited |
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. |
被 CWeightedDegreePositionStringKernel, CKernel, CList, CAlphabet, CLinearHMM, CGaussianKernel, CInverseMultiQuadricKernel, CCircularKernel , 以及 CExponentialKernel 重载.
在文件 SGObject.cpp 第 989 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 occurres. |
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 984 行定义.
SGVector< float64_t > load_with_labels | ( | CLibSVMFile * | loader | ) |
load features from file
any subset is removed before
loader | File object to load data from |
在文件 SparseFeatures.cpp 第 641 行定义.
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inherited |
Takes a set of TParameter instances (base) with a certain version and a set of target parameter infos and recursively maps the base level wise to the current version using CSGObject::migrate(...). The base is replaced. After this call, the base version containing parameters should be of same version/type as the initial target parameter infos. Note for this to work, the migrate methods and all the internal parameter mappings have to match
param_base | set of TParameter instances that are mapped to the provided target parameter infos |
base_version | version of the parameter base |
target_param_infos | set of SGParamInfo instances that specify the target parameter base |
在文件 SGObject.cpp 第 671 行定义.
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protectedvirtualinherited |
creates a new TParameter instance, which contains migrated data from the version that is provided. The provided parameter data base is used for migration, this base is a collection of all parameter data of the previous version. Migration is done FROM the data in param_base TO the provided param info Migration is always one version step. Method has to be implemented in subclasses, if no match is found, base method has to be called.
If there is an element in the param_base which equals the target, a copy of the element is returned. This represents the case when nothing has changed and therefore, the migrate method is not overloaded in a subclass
param_base | set of TParameter instances to use for migration |
target | parameter info for the resulting TParameter |
在文件 SGObject.cpp 第 878 行定义.
void obtain_from_simple | ( | CDenseFeatures< ST > * | sf | ) |
obtain sparse features from simple features
subset on input is ignored, subset of this instance is removed
sf | simple features |
在文件 SparseFeatures.cpp 第 312 行定义.
void obtain_from_simple | ( | CDenseFeatures< complex128_t > * | sf | ) |
在文件 SparseFeatures.cpp 第 319 行定义.
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protectedvirtualinherited |
This method prepares everything for a one-to-one parameter migration. One to one here means that only ONE element of the parameter base is needed for the migration (the one with the same name as the target). Data is allocated for the target (in the type as provided in the target SGParamInfo), and a corresponding new TParameter instance is written to replacement. The to_migrate pointer points to the single needed TParameter instance needed for migration. If a name change happened, the old name may be specified by old_name. In addition, the m_delete_data flag of to_migrate is set to true. So if you want to migrate data, the only thing to do after this call is converting the data in the m_parameter fields. If unsure how to use - have a look into an example for this. (base_migration_type_conversion.cpp for example)
param_base | set of TParameter instances to use for migration |
target | parameter info for the resulting TParameter |
replacement | (used as output) here the TParameter instance which is returned by migration is created into |
to_migrate | the only source that is used for migration |
old_name | with this parameter, a name change may be specified |
在文件 SGObject.cpp 第 818 行定义.
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inherited |
prints all parameter registered for model selection and their type
在文件 SGObject.cpp 第 1036 行定义.
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virtualinherited |
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virtualinherited |
removes all subsets Calls subset_changed_post() afterwards
被 CCombinedFeatures 重载.
在文件 Features.cpp 第 319 行定义.
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virtualinherited |
removes that last added subset from subset stack, if existing Calls subset_changed_post() afterwards
被 CCombinedFeatures 重载.
在文件 Features.cpp 第 313 行定义.
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virtualinherited |
in case there is a feature matrix allow for reshaping
NOT IMPLEMENTED!
num_features | new number of features |
num_vectors | new number of vectors |
被 CDenseFeatures< ST >, CDenseFeatures< uint32_t >, CDenseFeatures< float64_t >, CDenseFeatures< T > , 以及 CDenseFeatures< uint16_t > 重载.
在文件 Features.cpp 第 162 行定义.
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virtual |
save features to file
not possible with subset
writer | File object to write data to |
重载 CFeatures .
在文件 SparseFeatures.cpp 第 649 行定义.
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virtualinherited |
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 |
param_version | (optional) a parameter version different to (this is mainly for testing, better do not use) |
在文件 SGObject.cpp 第 246 行定义.
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protectedvirtualinherited |
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. |
被 CKernel 重载.
在文件 SGObject.cpp 第 999 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::SAVE_SERIALIZABLE_PRE is called.
ShogunException | Will be thrown if an error occurres. |
被 CKernel, 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 994 行定义.
void save_with_labels | ( | CLibSVMFile * | writer, |
SGVector< float64_t > | labels | ||
) |
save features to file
not possible with subset
writer | File object to write data to |
labels | vector with labels to write out |
在文件 SparseFeatures.cpp 第 657 行定义.
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inherited |
|
virtual |
creates a sparse feature matrix from a full dense feature matrix necessary to set feature_matrix, num_features and num_vectors where num_features is the column offset, and columns are linear in memory see above for definition of sparse_feature_matrix
any subset is removed before
full | full feature matrix |
在文件 SparseFeatures.cpp 第 279 行定义.
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inherited |
在文件 SGObject.cpp 第 41 行定义.
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inherited |
在文件 SGObject.cpp 第 46 行定义.
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inherited |
在文件 SGObject.cpp 第 51 行定义.
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inherited |
在文件 SGObject.cpp 第 56 行定义.
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inherited |
在文件 SGObject.cpp 第 61 行定义.
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inherited |
在文件 SGObject.cpp 第 66 行定义.
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inherited |
在文件 SGObject.cpp 第 71 行定义.
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inherited |
在文件 SGObject.cpp 第 76 行定义.
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inherited |
在文件 SGObject.cpp 第 81 行定义.
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inherited |
在文件 SGObject.cpp 第 86 行定义.
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inherited |
在文件 SGObject.cpp 第 91 行定义.
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inherited |
在文件 SGObject.cpp 第 96 行定义.
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inherited |
在文件 SGObject.cpp 第 101 行定义.
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inherited |
在文件 SGObject.cpp 第 106 行定义.
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inherited |
在文件 SGObject.cpp 第 111 行定义.
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inherited |
set generic type to T
|
inherited |
|
inherited |
|
inherited |
int32_t set_num_features | ( | int32_t | num | ) |
set number of features
Sometimes when loading sparse features not all possible dimensions are used. This may pose a problem to classifiers when being applied to higher dimensional test-data. This function allows to artificially explode the feature space
num | the number of features, must be larger than the current number of features |
在文件 SparseFeatures.cpp 第 334 行定义.
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inherited |
|
inherited |
void set_sparse_feature_matrix | ( | SGSparseMatrix< ST > | sm | ) |
set sparse feature matrix
not possible with subset
sm | sparse feature matrix |
在文件 SparseFeatures.cpp 第 227 行定义.
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virtualinherited |
A shallow copy. All the SGObject instance variables will be simply assigned and SG_REF-ed.
被 CGaussianKernel 重载.
在文件 SGObject.h 第 117 行定义.
void sort_features | ( | ) |
ensure that features occur in ascending order, only call when no preprocessors are attached
not possiblwe with subset
在文件 SparseFeatures.cpp 第 596 行定义.
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virtualinherited |
method may be overwritten to update things that depend on subset
被 CStringFeatures< ST >, CStringFeatures< T >, CStringFeatures< uint8_t >, CStringFeatures< char > , 以及 CStringFeatures< uint16_t > 重载.
在文件 Features.h 第 271 行定义.
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inherited |
unset generic type
this has to be called in classes specializing a template class
在文件 SGObject.cpp 第 235 行定义.
|
inherited |
|
virtualinherited |
Updates the hash of current parameter combination.
在文件 SGObject.cpp 第 187 行定义.
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protectedinherited |
feature weighting in combined dot features
在文件 DotFeatures.h 第 246 行定义.
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protected |
feature cache
在文件 SparseFeatures.h 第 507 行定义.
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inherited |
io
在文件 SGObject.h 第 473 行定义.
|
inherited |
parameters wrt which we can compute gradients
在文件 SGObject.h 第 488 行定义.
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inherited |
Hash of parameter values
在文件 SGObject.h 第 494 行定义.
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inherited |
model selection parameters
在文件 SGObject.h 第 485 行定义.
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inherited |
map for different parameter versions
在文件 SGObject.h 第 491 行定义.
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inherited |
parameters
在文件 SGObject.h 第 482 行定义.
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protectedinherited |
subset used for index transformations
在文件 Features.h 第 302 行定义.
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inherited |
parallel
在文件 SGObject.h 第 476 行定义.
|
protected |
array of sparse vectors of size num_vectors
在文件 SparseFeatures.h 第 504 行定义.
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inherited |
version
在文件 SGObject.h 第 479 行定义.