SHOGUN
v2.0.0
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This class implements streaming features for use with VW.
Each example is stored in a VwExample object, which also contains label and other information. Features are hashed and are supposed to be used with a weight vector of preallocated dimensions.
Definition at line 39 of file StreamingVwFeatures.h.
Public Member Functions | |
CStreamingVwFeatures () | |
CStreamingVwFeatures (CStreamingVwFile *file, bool is_labelled, int32_t size) | |
CStreamingVwFeatures (CStreamingVwCacheFile *file, bool is_labelled, int32_t size) | |
~CStreamingVwFeatures () | |
CFeatures * | duplicate () const |
virtual void | set_vector_reader () |
virtual void | set_vector_and_label_reader () |
virtual void | start_parser () |
virtual void | end_parser () |
virtual void | reset_stream () |
virtual CVwEnvironment * | get_env () |
virtual void | set_env (CVwEnvironment *vw_env) |
virtual bool | get_next_example () |
virtual VwExample * | get_example () |
virtual float64_t | get_label () |
virtual void | release_example () |
virtual void | expand_if_required (float32_t *&vec, int32_t &len) |
virtual void | expand_if_required (float64_t *&vec, int32_t &len) |
virtual int32_t | get_dim_feature_space () const |
virtual float32_t | real_weight (float32_t w, float32_t gravity) |
virtual float32_t | dot (CStreamingDotFeatures *df) |
virtual float32_t | dense_dot (VwExample *&ex, const float32_t *vec2) |
virtual float32_t | dense_dot (const float32_t *vec2, int32_t vec2_len) |
virtual float32_t | dense_dot (SGSparseVector< float32_t > *vec1, const float32_t *vec2) |
virtual float32_t | dense_dot_truncated (const float32_t *vec2, VwExample *&ex, float32_t gravity) |
virtual void | add_to_dense_vec (float32_t alpha, VwExample *&ex, float32_t *vec2, int32_t vec2_len, bool abs_val=false) |
virtual void | add_to_dense_vec (float32_t alpha, float32_t *vec2, int32_t vec2_len, bool abs_val=false) |
virtual int32_t | get_nnz_features_for_vector () |
virtual int32_t | get_num_features () |
virtual EFeatureType | get_feature_type () const |
virtual EFeatureClass | get_feature_class () const |
virtual const char * | get_name () const |
virtual int32_t | get_num_vectors () const |
virtual int32_t | get_size () const |
virtual void | dense_dot_range (float32_t *output, float32_t *alphas, float32_t *vec, int32_t dim, float32_t b, int32_t num_vec=0) |
virtual void * | get_feature_iterator () |
virtual bool | get_next_feature (int32_t &index, float32_t &value, void *iterator) |
virtual void | free_feature_iterator (void *iterator) |
void | set_read_functions () |
virtual bool | get_has_labels () |
virtual bool | is_seekable () |
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) const |
get current preprocessor | |
void | set_preprocessed (int32_t num) |
bool | is_preprocessed (int32_t num) const |
int32_t | get_num_preprocessed () const |
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 () const |
virtual bool | reshape (int32_t num_features, int32_t num_vectors) |
void | list_feature_obj () const |
virtual void | load (CFile *loader) |
virtual void | save (CFile *writer) |
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 (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 CFeatures * | copy_subset (SGVector< index_t > indices) |
virtual CSGObject * | shallow_copy () const |
virtual CSGObject * | deep_copy () const |
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="", int32_t param_version=VERSION_PARAMETER) |
virtual bool | load_serializable (CSerializableFile *file, const char *prefix="", int32_t param_version=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_parameter_dictionary (CMap< TParameter *, CSGObject * > &dict) |
Public Attributes | |
SGIO * | io |
Parallel * | parallel |
Version * | version |
Parameter * | m_parameters |
Parameter * | m_model_selection_parameters |
ParameterMap * | m_parameter_map |
uint32_t | m_hash |
Protected Member Functions | |
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) |
virtual bool | update_parameter_hash () |
Protected Attributes | |
CInputParser< VwExample > | parser |
The parser object, which reads from input and returns parsed example objects. | |
vw_size_t | example_count |
Number of examples processed at a point of time. | |
float64_t | current_label |
The current example's label. | |
int32_t | current_length |
Number of features in current example. | |
CVwEnvironment * | env |
Environment for VW. | |
VwExample * | current_example |
Example currently being processed. | |
float32_t | combined_weight |
feature weighting in combined dot features | |
bool | has_labels |
Whether examples are labelled or not. | |
CStreamingFile * | working_file |
The StreamingFile object to read from. | |
bool | seekable |
Whether the stream is seekable. | |
CSubsetStack * | m_subset_stack |
Default constructor.
Sets the reading functions to be CStreamingFile::get_*_vector and get_*_vector_and_label depending on the type T.
Definition at line 20 of file StreamingVwFeatures.cpp.
CStreamingVwFeatures | ( | CStreamingVwFile * | file, |
bool | is_labelled, | ||
int32_t | size | ||
) |
Constructor taking args. Initializes the parser with the given args.
file | StreamingFile object, input file. |
is_labelled | Whether examples are labelled or not. |
size | Number of example objects to be stored in the parser at a time. |
Definition at line 26 of file StreamingVwFeatures.cpp.
CStreamingVwFeatures | ( | CStreamingVwCacheFile * | file, |
bool | is_labelled, | ||
int32_t | size | ||
) |
Constructor used when initialized with a cache file.
file | StreamingVwCacheFile object |
is_labelled | Whether examples are labelled or not |
size | Number of example objects to be stored in the parser at a time |
Definition at line 34 of file StreamingVwFeatures.cpp.
~CStreamingVwFeatures | ( | ) |
Destructor.
Ends the parsing thread. (Waits for pthread_join to complete)
Definition at line 42 of file StreamingVwFeatures.cpp.
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set preprocessor
add preprocessor
p | preprocessor to set |
Definition at line 81 of file Features.cpp.
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 |
Reimplemented in CCombinedFeatures.
Definition at line 351 of file Features.cpp.
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Add alpha*an example's feature vector to another dense vector. Takes the absolute value of current_vector if specified
alpha | alpha |
ex | example whose vector should be used |
vec2 | vector to add to |
vec2_len | length of vector |
abs_val | true if abs of example's vector should be taken |
Definition at line 350 of file StreamingVwFeatures.cpp.
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Add alpha*current_vector to another dense vector. Takes the absolute value of current_vector if specified
alpha | alpha |
vec2 | vector to add to |
vec2_len | length of vector |
abs_val | true if abs of current_vector should be taken |
Implements CStreamingDotFeatures.
Definition at line 370 of file StreamingVwFeatures.cpp.
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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. |
Definition at line 1204 of file SGObject.cpp.
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check feature compatibility
f | features to check for compatibility |
Definition at line 326 of file Features.cpp.
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clears all preprocs
Definition at line 137 of file Features.cpp.
Creates a new CFeatures instance containing copies of the elements which are specified by the provided indices.
This method is needed for a KernelMachine to store its model data. NOT IMPLEMENTED!
indices | indices of feature elements to copy |
Reimplemented in CStringFeatures< ST >, CStringFeatures< T >, CStringFeatures< uint8_t >, CStringFeatures< char >, CStringFeatures< uint16_t >, CSparseFeatures< ST >, CSparseFeatures< float64_t >, CSparseFeatures< T >, CDenseFeatures< ST >, CDenseFeatures< uint32_t >, CDenseFeatures< float64_t >, CDenseFeatures< T >, CDenseFeatures< uint16_t >, and CCombinedFeatures.
Definition at line 374 of file Features.cpp.
Takes another feature instance and returns a new instance which is a concatenation of a copy if this instace's data and the given instance's data. Note that the feature types have to be equal.
NOT IMPLEMENTED!
other | feature object to append |
Reimplemented in CDenseFeatures< ST >, CDenseFeatures< uint32_t >, CDenseFeatures< float64_t >, CDenseFeatures< T >, CDenseFeatures< uint16_t >, and CCombinedFeatures.
Definition at line 234 of file Features.h.
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A deep copy. All the instance variables will also be copied.
Definition at line 131 of file SGObject.h.
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del current preprocessor
delete preprocessor from list caller has to clean up returned preproc
num | index of preprocessor in list |
Definition at line 143 of file Features.cpp.
Dot product of an example with a vector
ex | example, as VwExample |
vec2 | vector to take dot product with |
Definition at line 309 of file StreamingVwFeatures.cpp.
Dot product of current feature vector with a dense vector which stores weights in hashed indices
vec2 | dense weight vector |
vec2_len | length of weight vector (not used) |
Implements CStreamingDotFeatures.
Definition at line 320 of file StreamingVwFeatures.cpp.
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Dot product between a dense weight vector and a sparse feature vector. Assumes the features to belong to the constant namespace.
vec1 | sparse feature vector |
vec2 | weight vector |
Definition at line 325 of file StreamingVwFeatures.cpp.
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Compute the dot product for all vectors. This function makes use of dense_dot alphas[i] * sparse[i]^T * w + b
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 |
num_vec | number of vectors to operate on (indices 0 to num_vec-1) |
If num_vec == 0 or left to its default value, the function attempts to return dot product for all vectors. However, the given output vector must be preallocated!
note that the result will be written to output[0...(num_vec-1)] except when num_vec = 0
Definition at line 38 of file StreamingDotFeatures.cpp.
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Calculate dot product of features with another vector, truncating the elements of that vector by magnitude 'gravity' to a minimum final magnitude of zero.
vec2 | vector to take dot product with |
ex | example whose features have to be taken |
gravity | value to use for truncating |
Definition at line 334 of file StreamingVwFeatures.cpp.
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Dot product taken with another StreamingDotFeatures object.
Currently only works if it is a CStreamingVwFeatures object. It takes the dot product of the current_vectors of both objects.
df | CStreamingDotFeatures object. |
Implements CStreamingDotFeatures.
Definition at line 303 of file StreamingVwFeatures.cpp.
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Duplicate this object
Implements CFeatures.
Definition at line 48 of file StreamingVwFeatures.cpp.
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Ends the parsing thread.
Waits for the thread to join.
Implements CStreamingFeatures.
Definition at line 244 of file StreamingVwFeatures.cpp.
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Expand the vector passed so that it its length is equal to the dimensionality of the features. The previous values are kept intact through realloc, and the new ones are set to zero.
vec | float32_t* vector |
len | length of the vector |
Reimplemented from CStreamingDotFeatures.
Definition at line 89 of file StreamingVwFeatures.cpp.
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Expand the vector passed so that it its length is equal to the dimensionality of the features. The previous values are kept intact through realloc, and the new ones are set to zero.
vec | float64_t* vector |
len | length of the vector |
Reimplemented from CStreamingDotFeatures.
Definition at line 100 of file StreamingVwFeatures.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 |
Definition at line 101 of file StreamingDotFeatures.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 CStreamingDotFeatures.
Definition at line 298 of file StreamingVwFeatures.cpp.
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Returns the current example.
Definition at line 269 of file StreamingVwFeatures.cpp.
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Return the feature class
Implements CFeatures.
Definition at line 380 of file StreamingVwFeatures.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
Definition at line 83 of file StreamingDotFeatures.cpp.
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Return the feature type, depending on T.
Implements CFeatures.
Definition at line 137 of file StreamingVwFeatures.cpp.
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Return whether the examples are labelled or not.
Definition at line 20 of file StreamingFeatures.cpp.
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Return the label of the current example as a float.
Examples must be labelled, otherwise an error occurs.
Implements CStreamingFeatures.
Definition at line 274 of file StreamingVwFeatures.cpp.
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Definition at line 1108 of file SGObject.cpp.
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Returns description of a given parameter string, if it exists. SG_ERROR otherwise
param_name | name of the parameter |
Definition at line 1132 of file SGObject.cpp.
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Returns index of model selection parameter with provided index
param_name | name of model selection parameter |
Definition at line 1145 of file SGObject.cpp.
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Return the name.
Implements CSGObject.
Definition at line 329 of file StreamingVwFeatures.h.
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Instructs the parser to return the next example.
This example is stored as the current_example in this object.
Implements CStreamingFeatures.
Definition at line 249 of file StreamingVwFeatures.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 |
Definition at line 95 of file StreamingDotFeatures.cpp.
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get number of non-zero features in vector
Reimplemented from CStreamingDotFeatures.
Definition at line 119 of file StreamingVwFeatures.cpp.
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Return the number of features in the current example.
Implements CStreamingFeatures.
Definition at line 375 of file StreamingVwFeatures.cpp.
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get whether specified preprocessor (or all if num=1) was/were already applied
get the number of applied preprocs
Definition at line 123 of file Features.cpp.
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get number of preprocessors
Definition at line 198 of file Features.cpp.
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Return the number of vectors stored in this object.
Implements CFeatures.
Definition at line 124 of file StreamingVwFeatures.cpp.
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get current preprocessor
get specified preprocessor
num | index of preprocessor in list |
Definition at line 111 of file Features.cpp.
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Return the size of one T object.
Implements CFeatures.
Definition at line 132 of file StreamingVwFeatures.cpp.
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check if features have given property
p | feature property |
Definition at line 336 of file Features.cpp.
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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 |
Definition at line 278 of file SGObject.cpp.
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get whether specified preprocessor was already applied
num | index of preprocessor in list |
Definition at line 193 of file Features.cpp.
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Whether the stream is seekable (to check if multiple epochs are possible), i.e., whether we can process examples in a batch fashion.
A stream can usually seekable when it comes from a file or when it comes from another conventional CFeatures object.
Definition at line 25 of file StreamingFeatures.cpp.
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list feature object
Definition at line 214 of file Features.cpp.
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load features from file
loader | File object via which data shall be loaded |
Reimplemented in CDenseFeatures< ST >, CDenseFeatures< uint32_t >, CDenseFeatures< float64_t >, CDenseFeatures< T >, CDenseFeatures< uint16_t >, CSparseFeatures< ST >, CSparseFeatures< float64_t >, CSparseFeatures< T >, CStringFeatures< ST >, CStringFeatures< T >, CStringFeatures< uint8_t >, CStringFeatures< char >, and CStringFeatures< uint16_t >.
Definition at line 312 of file Features.cpp.
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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_PARAMETER for this in most cases) |
file | file to load from |
prefix | prefix for members |
Definition at line 679 of file SGObject.cpp.
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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 |
Definition at line 523 of file SGObject.cpp.
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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) |
Reimplemented in CModelSelectionParameters.
Definition at line 354 of file SGObject.cpp.
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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. |
Reimplemented in CKernel, CWeightedDegreePositionStringKernel, CList, CAlphabet, CLinearHMM, CGaussianKernel, CANOVAKernel, CInverseMultiQuadricKernel, CCircularKernel, and CExponentialKernel.
Definition at line 1033 of file SGObject.cpp.
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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::LOAD_SERIALIZABLE_PRE is called.
ShogunException | Will be thrown if an error occurres. |
Definition at line 1028 of file SGObject.cpp.
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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 |
Definition at line 717 of file SGObject.cpp.
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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 |
Definition at line 923 of file SGObject.cpp.
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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 |
Definition at line 864 of file SGObject.cpp.
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prints all parameter registered for model selection and their type
Definition at line 1084 of file SGObject.cpp.
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prints registered parameters out
prefix | prefix for members |
Definition at line 290 of file SGObject.cpp.
Reduce element 'w' to max(w-gravity, 0)
w | value to truncate |
gravity | value to truncate using |
Definition at line 111 of file StreamingVwFeatures.cpp.
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Release the current example, indicating to the parser that it has been processed by the learning algorithm.
The parser is then free to throw away that example.
Implements CStreamingFeatures.
Definition at line 281 of file StreamingVwFeatures.cpp.
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removes all subsets Calls subset_changed_post() afterwards
Reimplemented in CCombinedFeatures.
Definition at line 363 of file Features.cpp.
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removes that last added subset from subset stack, if existing Calls subset_changed_post() afterwards
Reimplemented in CCombinedFeatures.
Definition at line 357 of file Features.cpp.
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Reset the file back to the first example. Only works for cache files.
Reimplemented from CStreamingFeatures.
Definition at line 63 of file StreamingVwFeatures.cpp.
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in case there is a feature matrix allow for reshaping
NOT IMPLEMENTED!
num_features | new number of features |
num_vectors | new number of vectors |
Reimplemented in CDenseFeatures< ST >, CDenseFeatures< uint32_t >, CDenseFeatures< float64_t >, CDenseFeatures< T >, and CDenseFeatures< uint16_t >.
Definition at line 208 of file Features.cpp.
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save features to file
writer | File object via which data shall be saved |
Reimplemented in CStringFeatures< ST >, CStringFeatures< T >, CStringFeatures< uint8_t >, CStringFeatures< char >, CStringFeatures< uint16_t >, CDenseFeatures< ST >, CDenseFeatures< uint32_t >, CDenseFeatures< float64_t >, CDenseFeatures< T >, CDenseFeatures< uint16_t >, CSparseFeatures< ST >, CSparseFeatures< float64_t >, and CSparseFeatures< T >.
Definition at line 319 of file Features.cpp.
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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 |
param_version | (optional) a parameter version different to (this is mainly for testing, better do not use) |
Reimplemented in CModelSelectionParameters.
Definition at line 296 of file SGObject.cpp.
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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. |
Reimplemented in CKernel.
Definition at line 1043 of file SGObject.cpp.
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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. |
Reimplemented in CKernel.
Definition at line 1038 of file SGObject.cpp.
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Set the environment
vw_env | environment |
Definition at line 83 of file StreamingVwFeatures.cpp.
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set generic type to T
Definition at line 41 of file SGObject.cpp.
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set the parallel object
parallel | parallel object to use |
Definition at line 230 of file SGObject.cpp.
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set the version object
version | version object to use |
Definition at line 265 of file SGObject.cpp.
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inherited |
set applied flag for preprocessor
num | index of preprocessor in list |
Definition at line 188 of file Features.cpp.
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inherited |
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inherited |
Set the vector reading functions.
The functions are implemented specific to the type in the derived class.
Definition at line 14 of file StreamingFeatures.cpp.
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virtual |
Sets the read function (in case the examples are labelled) to get_*_vector_and_label from CStreamingFile.
The exact function depends on type T.
The parser uses the function set by this while reading labelled examples.
Implements CStreamingFeatures.
Definition at line 58 of file StreamingVwFeatures.cpp.
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virtual |
Sets the read function (in case the examples are unlabelled) to get_*_vector() from CStreamingFile.
The exact function depends on type T.
The parser uses the function set by this while reading unlabelled examples.
Implements CStreamingFeatures.
Definition at line 53 of file StreamingVwFeatures.cpp.
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virtualinherited |
A shallow copy. All the SGObject instance variables will be simply assigned and SG_REF-ed.
Reimplemented in CGaussianKernel.
Definition at line 122 of file SGObject.h.
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virtual |
Starts the parsing thread.
To be called before trying to use any feature vectors from this object.
Implements CStreamingFeatures.
Definition at line 238 of file StreamingVwFeatures.cpp.
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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 262 of file Features.h.
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inherited |
unset generic type
this has to be called in classes specializing a template class
Definition at line 285 of file SGObject.cpp.
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inherited |
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protectedvirtualinherited |
Updates the hash of current parameter combination.
Definition at line 237 of file SGObject.cpp.
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protectedinherited |
feature weighting in combined dot features
Definition at line 193 of file StreamingDotFeatures.h.
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protected |
Example currently being processed.
Definition at line 396 of file StreamingVwFeatures.h.
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protected |
The current example's label.
Definition at line 387 of file StreamingVwFeatures.h.
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protected |
Number of features in current example.
Definition at line 390 of file StreamingVwFeatures.h.
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protected |
Environment for VW.
Definition at line 393 of file StreamingVwFeatures.h.
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protected |
Number of examples processed at a point of time.
Definition at line 384 of file StreamingVwFeatures.h.
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protectedinherited |
Whether examples are labelled or not.
Definition at line 185 of file StreamingFeatures.h.
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inherited |
io
Definition at line 462 of file SGObject.h.
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inherited |
Hash of parameter values
Definition at line 480 of file SGObject.h.
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inherited |
model selection parameters
Definition at line 474 of file SGObject.h.
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inherited |
map for different parameter versions
Definition at line 477 of file SGObject.h.
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inherited |
parameters
Definition at line 471 of file SGObject.h.
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protectedinherited |
subset used for index transformations
Definition at line 296 of file Features.h.
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inherited |
parallel
Definition at line 465 of file SGObject.h.
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protected |
The parser object, which reads from input and returns parsed example objects.
Definition at line 381 of file StreamingVwFeatures.h.
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protectedinherited |
Whether the stream is seekable.
Definition at line 191 of file StreamingFeatures.h.
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inherited |
version
Definition at line 468 of file SGObject.h.
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protectedinherited |
The StreamingFile object to read from.
Definition at line 188 of file StreamingFeatures.h.