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SHOGUN
4.1.0
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SHOGUN
4.1.0
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The class DenseFeatures implements dense feature matrices.
The feature matrices are stored en-block in memory in fortran order, i.e. column-by-column, where a column denotes a feature vector.
There are get_num_vectors() many feature vectors, of dimension get_num_features(). To access a feature vector call get_feature_vector() and when you are done treating it call free_feature_vector(). While free_feature_vector() is a NOP in most cases feature vectors might have been generated on the fly (due to a number preprocessors being attached to them).
From this template class a number the following dense feature matrix types are used and supported:
Partly) subset access is supported for this feature type. Dense 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
Public Member Functions | |
| CDenseFeatures (int32_t size=0) | |
| CDenseFeatures (const CDenseFeatures &orig) | |
| CDenseFeatures (SGMatrix< ST > matrix) | |
| CDenseFeatures (ST *src, int32_t num_feat, int32_t num_vec) | |
| CDenseFeatures (CFile *loader) | |
| virtual CFeatures * | duplicate () const |
| virtual | ~CDenseFeatures () |
| void | free_feature_matrix () |
| void | free_features () |
| ST * | get_feature_vector (int32_t num, int32_t &len, bool &dofree) |
| void | set_feature_vector (SGVector< ST > vector, int32_t num) |
| SGVector< ST > | get_feature_vector (int32_t num) |
| void | free_feature_vector (ST *feat_vec, int32_t num, bool dofree) |
| void | free_feature_vector (SGVector< ST > vec, int32_t num) |
| void | vector_subset (int32_t *idx, int32_t idx_len) |
| void | feature_subset (int32_t *idx, int32_t idx_len) |
| SGMatrix< ST > | get_feature_matrix () |
| SGMatrix< ST > | steal_feature_matrix () |
| void | set_feature_matrix (SGMatrix< ST > matrix) |
| ST * | get_feature_matrix (int32_t &num_feat, int32_t &num_vec) |
| CDenseFeatures< ST > * | get_transposed () |
| ST * | get_transposed (int32_t &num_feat, int32_t &num_vec) |
| virtual void | copy_feature_matrix (SGMatrix< ST > src) |
| void | obtain_from_dot (CDotFeatures *df) |
| virtual bool | apply_preprocessor (bool force_preprocessing=false) |
| virtual int32_t | get_num_vectors () const |
| int32_t | get_num_features () const |
| void | set_num_features (int32_t num) |
| void | set_num_vectors (int32_t num) |
| void | initialize_cache () |
| virtual EFeatureClass | get_feature_class () const |
| virtual EFeatureType | get_feature_type () const |
| virtual bool | reshape (int32_t p_num_features, int32_t p_num_vectors) |
| 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 | load (CFile *loader) |
| virtual void | save (CFile *saver) |
| 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 CFeatures * | copy_dimension_subset (SGVector< index_t > dims) |
| virtual bool | is_equal (CDenseFeatures *rhs) |
| CFeatures * | create_merged_copy (CList *other) |
| CFeatures * | create_merged_copy (CFeatures *other) |
| virtual const char * | get_name () const |
| template<> | |
| void | add_to_dense_vec (float64_t alpha, int32_t vec_idx1, float64_t *vec2, int32_t vec2_len, bool abs_val) |
| template<> | |
| float64_t | dense_dot (int32_t vec_idx1, const float64_t *vec2, int32_t vec2_len) |
| template<> | |
| float64_t | dense_dot (int32_t vec_idx1, const float64_t *vec2, int32_t vec2_len) |
| template<> | |
| float64_t | dense_dot (int32_t vec_idx1, const float64_t *vec2, int32_t vec2_len) |
| template<> | |
| float64_t | dense_dot (int32_t vec_idx1, const float64_t *vec2, int32_t vec2_len) |
| template<> | |
| float64_t | dense_dot (int32_t vec_idx1, const float64_t *vec2, int32_t vec2_len) |
| template<> | |
| float64_t | dense_dot (int32_t vec_idx1, const float64_t *vec2, int32_t vec2_len) |
| template<> | |
| float64_t | dense_dot (int32_t vec_idx1, const float64_t *vec2, int32_t vec2_len) |
| template<> | |
| float64_t | dense_dot (int32_t vec_idx1, const float64_t *vec2, int32_t vec2_len) |
| template<> | |
| float64_t | dense_dot (int32_t vec_idx1, const float64_t *vec2, int32_t vec2_len) |
| template<> | |
| float64_t | dense_dot (int32_t vec_idx1, const float64_t *vec2, int32_t vec2_len) |
| template<> | |
| float64_t | dense_dot (int32_t vec_idx1, const float64_t *vec2, int32_t vec2_len) |
| template<> | |
| float64_t | dense_dot (int32_t vec_idx1, const float64_t *vec2, int32_t vec2_len) |
| template<> | |
| float64_t | dense_dot (int32_t vec_idx1, const float64_t *vec2, int32_t vec2_len) |
| 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 |
| 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 void | add_subset (SGVector< index_t > subset) |
| virtual void | add_subset_in_place (SGVector< index_t > subset) |
| virtual void | remove_subset () |
| virtual void | remove_all_subsets () |
| virtual CSubsetStack * | get_subset_stack () |
| virtual void | subset_changed_post () |
| virtual bool | support_compatible_class () const |
| virtual bool | get_feature_class_compatibility (EFeatureClass rhs) const |
| 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 () |
Static Public Member Functions | |
| static CDenseFeatures * | obtain_from_generic (CFeatures *const base_features) |
| 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 Attributes | |
| SGIO * | io |
| Parallel * | parallel |
| Version * | version |
| Parameter * | m_parameters |
| Parameter * | m_model_selection_parameters |
| Parameter * | m_gradient_parameters |
| uint32_t | m_hash |
Protected Member Functions | |
| virtual ST * | compute_feature_vector (int32_t num, int32_t &len, ST *target=NULL) |
| void | display_progress (int32_t start, int32_t stop, int32_t v) |
| 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 Attributes | |
| int32_t | num_vectors |
| number of vectors in cache More... | |
| int32_t | num_features |
| number of features in cache More... | |
| SGMatrix< ST > | feature_matrix |
| CCache< ST > * | feature_cache |
| float64_t | combined_weight |
| feature weighting in combined dot features More... | |
| CSubsetStack * | m_subset_stack |
| CDenseFeatures | ( | int32_t | size = 0 | ) |
| CDenseFeatures | ( | const CDenseFeatures< ST > & | orig | ) |
copy constructor
Definition at line 29 of file DenseFeatures.cpp.
| CDenseFeatures | ( | SGMatrix< ST > | matrix | ) |
| CDenseFeatures | ( | ST * | src, |
| int32_t | num_feat, | ||
| int32_t | num_vec | ||
| ) |
constructor
| src | feature matrix |
| num_feat | number of features in matrix |
| num_vec | number of vectors in matrix |
Definition at line 51 of file DenseFeatures.cpp.
| CDenseFeatures | ( | CFile * | loader | ) |
constructor loading features from file
| loader | File object via which to load data |
Definition at line 57 of file DenseFeatures.cpp.
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virtual |
Definition at line 69 of file DenseFeatures.cpp.
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virtualinherited |
Adds a 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_subset_in_place() should be used (does not store intermediate index vectors)
Calls subset_changed_post() afterwards
| subset | subset of indices to add |
Reimplemented in CCombinedFeatures.
Definition at line 310 of file Features.cpp.
Sets/changes latest added 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_subset(). If no subset is active, this just adds.
Calls subset_changed_post() afterwards
| subset | subset of indices to replace the latest one with. |
Definition at line 316 of file Features.cpp.
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virtual |
add vector 1 multiplied with alpha to dense vector2
possible with subset
| 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 498 of file DenseFeatures.cpp.
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virtual |
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 524 of file DenseFeatures.cpp.
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virtual |
apply preprocessor
applies preprocessors to ALL features (subset removed before and restored afterwards)
not possible with subset
| force_preprocessing | if preprocssing shall be forced |
Definition at line 379 of file DenseFeatures.cpp.
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inherited |
run benchmark for add_to_dense_vec
Definition at line 318 of file DotFeatures.cpp.
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inherited |
run benchmark for dense_dot_range
Definition at line 341 of file DotFeatures.cpp.
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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. |
Definition at line 597 of file SGObject.cpp.
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inherited |
check feature compatibility
| f | features to check for compatibility |
Definition at line 283 of file Features.cpp.
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inherited |
clears all preprocs
Definition at line 116 of file Features.cpp.
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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.
Definition at line 714 of file SGObject.cpp.
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staticinherited |
compute the covariance of two CDotFeatures together
Definition at line 469 of file DotFeatures.cpp.
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protectedvirtual |
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 |
Reimplemented in CTOPFeatures, CFKFeatures, and CRealFileFeatures.
Definition at line 639 of file DenseFeatures.cpp.
Creates a new CFeatures instance containing only the dimensions of the feature vector which are specified by the provided indices.
This method is needed for feature selection tasks
possible with subset
| dims | indices of feature dimensions to copy |
Reimplemented from CFeatures.
Definition at line 610 of file DenseFeatures.cpp.
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virtual |
copy feature matrix store copy of feature_matrix, where num_features is the column offset, and columns are linear in memory see below for definition of feature_matrix
not possible with subset
| src | feature matrix to copy |
Definition at line 343 of file DenseFeatures.cpp.
Creates a new CFeatures instance containing copies of the elements which are specified by the provided indices.
possible with subset
| indices | indices of feature elements to copy |
Reimplemented from CFeatures.
Definition at line 592 of file DenseFeatures.cpp.
Takes a list of feature instances and returns a new instance which is a concatenation of a copy if this instace's data and the given instancess data. Note that the feature types have to be equal.
| other | feature object to append |
Reimplemented from CFeatures.
Definition at line 976 of file DenseFeatures.cpp.
Convenience method for method with same name and list as parameter.
| other | feature object to append |
Reimplemented from CFeatures.
Definition at line 1058 of file DenseFeatures.cpp.
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virtualinherited |
A deep copy. All the instance variables will also be copied.
Definition at line 198 of file SGObject.cpp.
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virtualinherited |
delete preprocessor from list
| num | index of preprocessor in list |
Definition at line 122 of file Features.cpp.
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 |
Implements CDotFeatures.
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 685 of file DenseFeatures.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 705 of file DenseFeatures.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 725 of file DenseFeatures.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 745 of file DenseFeatures.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 765 of file DenseFeatures.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 785 of file DenseFeatures.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 805 of file DenseFeatures.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 825 of file DenseFeatures.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 845 of file DenseFeatures.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 865 of file DenseFeatures.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 885 of file DenseFeatures.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 905 of file DenseFeatures.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 922 of file DenseFeatures.cpp.
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virtualinherited |
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)]
Reimplemented in CCombinedDotFeatures, and CHashedWDFeaturesTransposed.
Definition at line 67 of file DotFeatures.cpp.
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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
Definition at line 231 of file DotFeatures.cpp.
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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 |
Reimplemented in CCombinedDotFeatures, and CHashedWDFeaturesTransposed.
Definition at line 153 of file DotFeatures.cpp.
compute dot product between vector1 and a dense vector
| vec_idx1 | index of first vector |
| vec2 | dense vector |
Reimplemented in CHashedDocDotFeatures.
Definition at line 62 of file DotFeatures.cpp.
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protectedinherited |
display progress output
| start | minimum value |
| stop | maximum value |
| v | current value |
Definition at line 528 of file DotFeatures.cpp.
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virtual |
compute dot product between vector1 and vector2, appointed by their indices
possible with subset
| 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 476 of file DenseFeatures.cpp.
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virtual |
duplicate feature object
Implements CFeatures.
Definition at line 64 of file DenseFeatures.cpp.
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) |
Definition at line 618 of file SGObject.cpp.
| void feature_subset | ( | int32_t * | idx, |
| int32_t | idx_len | ||
| ) |
Extracts the features mentioned in idx and replaces them in feature matrix in place.
It does not resize the allocated memory block.
Not possible with subset.
| idx | index with features that shall remain in the feature matrix |
| idx_len | length of the index |
Note: assumes idx is sorted
Definition at line 237 of file DenseFeatures.cpp.
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virtual |
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 582 of file DenseFeatures.cpp.
| void free_feature_matrix | ( | ) |
| void free_feature_vector | ( | ST * | feat_vec, |
| int32_t | num, | ||
| bool | dofree | ||
| ) |
free feature vector
possible with subset
| feat_vec | feature vector to free |
| num | index in feature cache |
| dofree | if vector should be really deleted |
Definition at line 191 of file DenseFeatures.cpp.
| void free_feature_vector | ( | SGVector< ST > | vec, |
| int32_t | num | ||
| ) |
free feature vector
possible with subset
| vec | feature vector to free |
| num | index in feature cache |
Definition at line 200 of file DenseFeatures.cpp.
| void free_features | ( | ) |
free feature matrix and cache
Any subset is removed
Definition at line 74 of file DenseFeatures.cpp.
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inherited |
|
inherited |
get combined feature weight
Definition at line 154 of file DotFeatures.h.
compute the feature matrix in feature space
Definition at line 284 of file DotFeatures.cpp.
compute the feature vector in feature space
Definition at line 305 of file DotFeatures.cpp.
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virtual |
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 474 of file DenseFeatures.cpp.
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virtual |
get feature class
Implements CFeatures.
Definition at line 457 of file DenseFeatures.cpp.
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virtualinherited |
Given a class in right hand side, does this class support compatible computation?
for example, is this->dot(rhs_prt) valid, where rhs_prt is the class in right hand side
| rhs | the class in right hand side |
Reimplemented in CDenseSubSamplesFeatures< ST >.
Definition at line 355 of file Features.cpp.
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virtual |
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 |
Implements CDotFeatures.
Definition at line 553 of file DenseFeatures.cpp.
| SGMatrix< ST > get_feature_matrix | ( | ) |
Getter the feature matrix
in-place without subset a copy with subset
Definition at line 267 of file DenseFeatures.cpp.
| ST * get_feature_matrix | ( | int32_t & | num_feat, |
| int32_t & | num_vec | ||
| ) |
get the pointer to the feature matrix num_feat,num_vectors are returned by reference
subset is ignored
| num_feat | number of features in matrix |
| num_vec | number of vectors in matrix |
Definition at line 305 of file DenseFeatures.cpp.
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virtual |
| ST * get_feature_vector | ( | int32_t | num, |
| int32_t & | len, | ||
| bool & | dofree | ||
| ) |
get feature vector for sample num from the matrix as it is if matrix is initialized, else return preprocessed compute_feature_vector (not implemented)
| num | index of feature vector |
| len | length is returned by reference |
| dofree | whether returned vector must be freed by caller via free_feature_vector |
Definition at line 89 of file DenseFeatures.cpp.
| SGVector< ST > get_feature_vector | ( | int32_t | num | ) |
get feature vector num
possible with subset
| num | index of vector |
Definition at line 174 of file DenseFeatures.cpp.
|
inherited |
|
inherited |
|
inherited |
|
staticinherited |
get mean of two CDotFeature objects
Definition at line 402 of file DotFeatures.cpp.
|
inherited |
Definition at line 498 of file SGObject.cpp.
|
inherited |
Returns description of a given parameter string, if it exists. SG_ERROR otherwise
| param_name | name of the parameter |
Definition at line 522 of file SGObject.cpp.
|
inherited |
Returns index of model selection parameter with provided index
| param_name | name of model selection parameter |
Definition at line 535 of file SGObject.cpp.
|
virtual |
Implements CSGObject.
Reimplemented in CTOPFeatures, CFKFeatures, and CRealFileFeatures.
Definition at line 519 of file DenseFeatures.h.
|
virtual |
iterate over the non-zero features
call this function with the iterator returned by get_first_feature and call free_feature_iterator to cleanup
possible with subset
| 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 569 of file DenseFeatures.cpp.
|
virtual |
get number of non-zero features in vector
| num | which vector |
Implements CDotFeatures.
Definition at line 548 of file DenseFeatures.cpp.
| int32_t get_num_features | ( | ) | const |
get number of features (of possible subset)
Definition at line 426 of file DenseFeatures.cpp.
|
inherited |
get the number of applied preprocs
Definition at line 103 of file Features.cpp.
|
inherited |
get number of preprocessors
Definition at line 155 of file Features.cpp.
|
virtual |
get number of feature vectors
Implements CFeatures.
Definition at line 421 of file DenseFeatures.cpp.
|
inherited |
get specified preprocessor
| num | index of preprocessor in list |
Definition at line 93 of file Features.cpp.
|
virtualinherited |
| CDenseFeatures< ST > * get_transposed | ( | ) |
get a transposed copy of the features
possible with subset
Definition at line 312 of file DenseFeatures.cpp.
| ST * get_transposed | ( | int32_t & | num_feat, |
| int32_t & | num_vec | ||
| ) |
compute and return the transpose of the 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 |
Definition at line 321 of file DenseFeatures.cpp.
|
inherited |
check if features have given property
| p | feature property |
Definition at line 295 of file Features.cpp.
| void initialize_cache | ( | ) |
|
virtual |
checks if the contents of this CDenseFeatures object are the same to the contents of rhs
| rhs | other CDenseFeatures object to compare to this one |
Definition at line 942 of file DenseFeatures.cpp.
|
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 |
Definition at line 296 of file SGObject.cpp.
|
inherited |
get whether specified preprocessor was already applied
| num | index of preprocessor in list |
Definition at line 149 of file Features.cpp.
|
inherited |
list feature object
Definition at line 171 of file Features.cpp.
|
inherited |
print preprocessors
Definition at line 131 of file Features.cpp.
|
virtual |
load features from file
| loader | File object via which to load data |
Reimplemented from CFeatures.
Definition at line 1074 of file DenseFeatures.cpp.
|
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 |
Definition at line 369 of file SGObject.cpp.
|
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 occurs. |
Reimplemented in CKernel, CWeightedDegreePositionStringKernel, CList, CAlphabet, CLinearHMM, CGaussianKernel, CInverseMultiQuadricKernel, CCircularKernel, and CExponentialKernel.
Definition at line 426 of file SGObject.cpp.
|
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. |
Reimplemented in CDynamicArray< T >, CDynamicArray< float64_t >, CDynamicArray< float32_t >, CDynamicArray< int32_t >, CDynamicArray< char >, CDynamicArray< bool >, and CDynamicObjectArray.
Definition at line 421 of file SGObject.cpp.
| void obtain_from_dot | ( | CDotFeatures * | df | ) |
obtain dense features from other dotfeatures
removes any subset before
| df | dotfeatures to obtain features from |
Definition at line 355 of file DenseFeatures.cpp.
|
static |
helper method used to specialize a base class instance
Definition at line 1087 of file DenseFeatures.cpp.
|
virtualinherited |
Definition at line 262 of file SGObject.cpp.
|
inherited |
prints all parameter registered for model selection and their type
Definition at line 474 of file SGObject.cpp.
|
virtualinherited |
prints registered parameters out
| prefix | prefix for members |
Definition at line 308 of file SGObject.cpp.
|
virtualinherited |
removes all subsets Calls subset_changed_post() afterwards
Reimplemented in CCombinedFeatures.
Definition at line 328 of file Features.cpp.
|
virtualinherited |
removes that last added subset from subset stack, if existing Calls subset_changed_post() afterwards
Reimplemented in CCombinedFeatures.
Definition at line 322 of file Features.cpp.
|
virtual |
reshape
not possible with subset
| p_num_features | new number of features |
| p_num_vectors | new number of vectors |
Reimplemented from CFeatures.
Definition at line 459 of file DenseFeatures.cpp.
|
virtual |
save features to file
| saver | File object via which to save data |
Reimplemented from CFeatures.
Definition at line 1082 of file DenseFeatures.cpp.
|
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 |
Definition at line 314 of file SGObject.cpp.
|
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 occurs. |
Reimplemented in CKernel.
Definition at line 436 of file SGObject.cpp.
|
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 occurs. |
Reimplemented in CKernel, CDynamicArray< T >, CDynamicArray< float64_t >, CDynamicArray< float32_t >, CDynamicArray< int32_t >, CDynamicArray< char >, CDynamicArray< bool >, and CDynamicObjectArray.
Definition at line 431 of file SGObject.cpp.
|
inherited |
set combined kernel weight
| nw | new combined feature weight |
Definition at line 160 of file DotFeatures.h.
| void set_feature_matrix | ( | SGMatrix< ST > | matrix | ) |
Setter for feature matrix
any subset is removed
num_cols is number of feature vectors num_rows is number of dims of vectors see below for definition of feature_matrix
| matrix | feature matrix to set |
Definition at line 296 of file DenseFeatures.cpp.
| void set_feature_vector | ( | SGVector< ST > | vector, |
| int32_t | num | ||
| ) |
set feature vector num
possible with subset
| vector | vector |
| num | index if vector to set |
Definition at line 152 of file DenseFeatures.cpp.
|
inherited |
Definition at line 41 of file SGObject.cpp.
|
inherited |
Definition at line 46 of file SGObject.cpp.
|
inherited |
Definition at line 51 of file SGObject.cpp.
|
inherited |
Definition at line 56 of file SGObject.cpp.
|
inherited |
Definition at line 61 of file SGObject.cpp.
|
inherited |
Definition at line 66 of file SGObject.cpp.
|
inherited |
Definition at line 71 of file SGObject.cpp.
|
inherited |
Definition at line 76 of file SGObject.cpp.
|
inherited |
Definition at line 81 of file SGObject.cpp.
|
inherited |
Definition at line 86 of file SGObject.cpp.
|
inherited |
Definition at line 91 of file SGObject.cpp.
|
inherited |
Definition at line 96 of file SGObject.cpp.
|
inherited |
Definition at line 101 of file SGObject.cpp.
|
inherited |
Definition at line 106 of file SGObject.cpp.
|
inherited |
Definition at line 111 of file SGObject.cpp.
|
inherited |
set generic type to T
|
inherited |
|
inherited |
set the parallel object
| parallel | parallel object to use |
Definition at line 241 of file SGObject.cpp.
|
inherited |
set the version object
| version | version object to use |
Definition at line 283 of file SGObject.cpp.
| void set_num_features | ( | int32_t | num | ) |
set number of features
| num | number to set |
Definition at line 428 of file DenseFeatures.cpp.
| void set_num_vectors | ( | int32_t | num | ) |
set number of vectors
not possible with subset
| num | number to set |
Definition at line 434 of file DenseFeatures.cpp.
|
inherited |
set applied flag for preprocessor
| num | index of preprocessor in list |
Definition at line 143 of file Features.cpp.
|
inherited |
|
virtualinherited |
A shallow copy. All the SGObject instance variables will be simply assigned and SG_REF-ed.
Reimplemented in CGaussianKernel.
Definition at line 192 of file SGObject.cpp.
| SGMatrix< ST > steal_feature_matrix | ( | ) |
steals feature matrix, i.e. returns matrix and forget about it subset is ignored
Definition at line 286 of file DenseFeatures.cpp.
|
virtualinherited |
method may be overwritten to update things that depend on subset
Reimplemented in CStringFeatures< ST >, CStringFeatures< T >, CStringFeatures< uint8_t >, CStringFeatures< char >, and CStringFeatures< uint16_t >.
Definition at line 293 of file Features.h.
|
virtualinherited |
does this class support compatible computation bewteen difference classes? for example, this->dot(rhs_prt), can rhs_prt be an instance of a difference class?
Reimplemented in CDenseSubSamplesFeatures< ST >.
Definition at line 323 of file Features.h.
|
inherited |
unset generic type
this has to be called in classes specializing a template class
Definition at line 303 of file SGObject.cpp.
|
inherited |
|
virtualinherited |
Updates the hash of current parameter combination
Definition at line 248 of file SGObject.cpp.
| void vector_subset | ( | int32_t * | idx, |
| int32_t | idx_len | ||
| ) |
Extracts the feature vectors mentioned in idx and replaces them in feature matrix in place.
It does not resize the allocated memory block.
not possible with subset
| idx | index with examples that shall remain in the feature matrix |
| idx_len | length of the index |
Note: assumes idx is sorted
Definition at line 206 of file DenseFeatures.cpp.
|
protectedinherited |
feature weighting in combined dot features
Definition at line 249 of file DotFeatures.h.
|
protected |
feature cache
Definition at line 553 of file DenseFeatures.h.
|
protected |
Feature matrix and its associated number of vectors and features. Note that num_vectors / num_features above match matrix sizes if feature_matrix.matrix != NULL
Definition at line 550 of file DenseFeatures.h.
|
inherited |
io
Definition at line 369 of file SGObject.h.
|
inherited |
parameters wrt which we can compute gradients
Definition at line 384 of file SGObject.h.
|
inherited |
Hash of parameter values
Definition at line 387 of file SGObject.h.
|
inherited |
model selection parameters
Definition at line 381 of file SGObject.h.
|
inherited |
parameters
Definition at line 378 of file SGObject.h.
|
protectedinherited |
subset used for index transformations
Definition at line 352 of file Features.h.
|
protected |
number of features in cache
Definition at line 544 of file DenseFeatures.h.
|
protected |
number of vectors in cache
Definition at line 541 of file DenseFeatures.h.
|
inherited |
parallel
Definition at line 372 of file SGObject.h.
|
inherited |
version
Definition at line 375 of file SGObject.h.