SHOGUN
v1.1.0
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Features that compute the Weighted Degreee Kernel feature space explicitly.
Definition at line 28 of file WDFeatures.h.
Public Member Functions | |
CWDFeatures () | |
CWDFeatures (CStringFeatures< uint8_t > *str, int32_t order, int32_t from_order) | |
CWDFeatures (const CWDFeatures &orig) | |
virtual | ~CWDFeatures () |
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 | add_to_dense_vec (float64_t alpha, int32_t vec_idx1, float64_t *vec2, int32_t vec2_len, bool abs_val=false) |
virtual int32_t | get_nnz_features_for_vector (int32_t num) |
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 * | duplicate () const |
virtual EFeatureType | get_feature_type () |
virtual EFeatureClass | get_feature_class () |
virtual int32_t | get_num_vectors () const |
virtual int32_t | get_size () |
void | set_normalization_const (float64_t n=0) |
float64_t | get_normalization_const () |
virtual const char * | get_name () const |
void | set_wd_weights (SGVector< float64_t > weights) |
void | set_wd_weights () |
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CDotFeatures (int32_t size=0) | |
CDotFeatures (const CDotFeatures &orig) | |
CDotFeatures (CFile *loader) | |
virtual | ~CDotFeatures () |
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 () |
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CFeatures (int32_t size=0) | |
CFeatures (const CFeatures &orig) | |
CFeatures (CFile *loader) | |
virtual | ~CFeatures () |
virtual int32_t | add_preprocessor (CPreprocessor *p) |
set preprocessor | |
virtual CPreprocessor * | del_preprocessor (int32_t num) |
del current preprocessor | |
CPreprocessor * | get_preprocessor (int32_t num) |
get current preprocessor | |
void | set_preprocessed (int32_t num) |
bool | is_preprocessed (int32_t num) |
int32_t | get_num_preprocessed () |
get whether specified preprocessor (or all if num=1) was/were already applied | |
int32_t | get_num_preprocessors () const |
void | clean_preprocessors () |
int32_t | get_cache_size () |
virtual bool | reshape (int32_t num_features, int32_t num_vectors) |
void | list_feature_obj () |
virtual void | load (CFile *loader) |
virtual void | save (CFile *writer) |
bool | check_feature_compatibility (CFeatures *f) |
bool | has_property (EFeatureProperty p) |
void | set_property (EFeatureProperty p) |
void | unset_property (EFeatureProperty p) |
virtual void | set_subset (CSubset *subset) |
virtual void | remove_subset () |
virtual void | subset_changed_post () |
index_t | subset_idx_conversion (index_t idx) const |
bool | has_subset () const |
virtual CFeatures * | copy_subset (SGVector< index_t > indices) |
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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 Attributes | |
CStringFeatures< uint8_t > * | strings |
int32_t | degree |
int32_t | from_degree |
int32_t | string_length |
int32_t | num_strings |
int32_t | alphabet_size |
int32_t | w_dim |
float64_t * | wd_weights |
float64_t | normalization_const |
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float64_t | combined_weight |
feature weighting in combined dot features | |
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CSubset * | m_subset |
Additional Inherited Members | |
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static void * | dense_dot_range_helper (void *p) |
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SGIO * | io |
Parallel * | parallel |
Version * | version |
Parameter * | m_parameters |
Parameter * | m_model_selection_parameters |
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void | display_progress (int32_t start, int32_t stop, int32_t v) |
CWDFeatures | ( | ) |
defualt constructor
Definition at line 16 of file WDFeatures.cpp.
CWDFeatures | ( | CStringFeatures< uint8_t > * | str, |
int32_t | order, | ||
int32_t | from_order | ||
) |
constructor
str | stringfeatures (of bytes) |
order | of wd kernel |
from_order | use first order weights from higher order weighting |
Definition at line 33 of file WDFeatures.cpp.
CWDFeatures | ( | const CWDFeatures & | orig | ) |
copy constructor
Definition at line 55 of file WDFeatures.cpp.
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destructor
Definition at line 71 of file WDFeatures.cpp.
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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 |
Implements CDotFeatures.
Definition at line 146 of file WDFeatures.cpp.
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 |
Implements CDotFeatures.
Definition at line 108 of file WDFeatures.cpp.
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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 |
Implements CDotFeatures.
Definition at line 77 of file WDFeatures.cpp.
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duplicate feature object
Implements CFeatures.
Definition at line 292 of file WDFeatures.cpp.
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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 |
Implements CDotFeatures.
Definition at line 283 of file WDFeatures.cpp.
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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())
Implements CDotFeatures.
Definition at line 297 of file WDFeatures.cpp.
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get feature class
Implements CFeatures.
Definition at line 316 of file WDFeatures.cpp.
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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
vector_index | the index of the vector over whose components to iterate over |
Implements CDotFeatures.
Definition at line 217 of file WDFeatures.cpp.
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get feature type
Implements CFeatures.
Definition at line 311 of file WDFeatures.cpp.
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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 |
Implements CDotFeatures.
Definition at line 245 of file WDFeatures.cpp.
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get number of non-zero features in vector
num | which vector |
Implements CDotFeatures.
Definition at line 302 of file WDFeatures.cpp.
float64_t get_normalization_const | ( | ) |
get normalization constant
Definition at line 331 of file WDFeatures.cpp.
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get number of examples/vectors, possibly corresponding to the current subset
abstract base method
Implements CFeatures.
Definition at line 321 of file WDFeatures.cpp.
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get memory footprint of one feature
abstract base method
Implements CFeatures.
Definition at line 326 of file WDFeatures.cpp.
void set_normalization_const | ( | float64_t | n = 0 | ) |
set normalization constant
n | n=0 means automagic |
Definition at line 201 of file WDFeatures.cpp.
void set_wd_weights | ( | ) |
create wd kernel weighting heuristic
Definition at line 185 of file WDFeatures.cpp.
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size of alphabet
Definition at line 205 of file WDFeatures.h.
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degree
Definition at line 197 of file WDFeatures.h.
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from degree
Definition at line 199 of file WDFeatures.h.
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normalization const
Definition at line 212 of file WDFeatures.h.
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number of strings
Definition at line 203 of file WDFeatures.h.
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length of string in vector
Definition at line 201 of file WDFeatures.h.
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stringfeatures the wdfeatures are based on
Definition at line 194 of file WDFeatures.h.
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w dim
Definition at line 207 of file WDFeatures.h.
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wd weights
Definition at line 209 of file WDFeatures.h.