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CDenseFeatures< ST > 模板类 参考

详细描述

template<class ST>
class shogun::CDenseFeatures< ST >

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

在文件 LDA.h24 行定义.

类 CDenseFeatures< ST > 继承关系图:
Inheritance graph
[图例]

Public 成员函数

 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 CFeaturesduplicate () 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 CFeaturescopy_subset (SGVector< index_t > indices)
 
virtual bool is_equal (CDenseFeatures *rhs)
 
CFeaturescreate_merged_copy (CList *other)
 
CFeaturescreate_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_tget_computed_dot_feature_matrix ()
 
SGVector< float64_tget_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_tget_mean ()
 
virtual SGMatrix< float64_tget_cov ()
 
virtual void add_preprocessor (CPreprocessor *p)
 
virtual void del_preprocessor (int32_t num)
 
CPreprocessorget_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 remove_subset ()
 
virtual void remove_all_subsets ()
 
virtual CSubsetStackget_subset_stack ()
 
virtual void subset_changed_post ()
 
virtual CSGObjectshallow_copy () const
 
virtual CSGObjectdeep_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)
 
SGIOget_global_io ()
 
void set_global_parallel (Parallel *parallel)
 
Parallelget_global_parallel ()
 
void set_global_version (Version *version)
 
Versionget_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 CSGObjectclone ()
 

静态 Public 成员函数

static CDenseFeaturesobtain_from_generic (CFeatures *const base_features)
 
static void * dense_dot_range_helper (void *p)
 
static SGVector< float64_tget_mean (CDotFeatures *lhs, CDotFeatures *rhs)
 
static SGMatrix< float64_tcompute_cov (CDotFeatures *lhs, CDotFeatures *rhs)
 

Public 属性

SGIOio
 
Parallelparallel
 
Versionversion
 
Parameterm_parameters
 
Parameterm_model_selection_parameters
 
Parameterm_gradient_parameters
 
ParameterMapm_parameter_map
 
uint32_t m_hash
 

Protected 成员函数

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 TParametermigrate (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

int32_t num_vectors
 number of vectors in cache 更多...
 
int32_t num_features
 number of features in cache 更多...
 
SGMatrix< ST > feature_matrix
 
CCache< ST > * feature_cache
 
float64_t combined_weight
 feature weighting in combined dot features 更多...
 
CSubsetStackm_subset_stack
 

构造及析构函数说明

CDenseFeatures ( int32_t  size = 0)

constructor

参数
sizecache size

在文件 DenseFeatures.cpp24 行定义.

CDenseFeatures ( const CDenseFeatures< ST > &  orig)

copy constructor

在文件 DenseFeatures.cpp29 行定义.

CDenseFeatures ( SGMatrix< ST >  matrix)

constructor

参数
matrixfeature matrix

在文件 DenseFeatures.cpp44 行定义.

CDenseFeatures ( ST *  src,
int32_t  num_feat,
int32_t  num_vec 
)

constructor

参数
srcfeature matrix
num_featnumber of features in matrix
num_vecnumber of vectors in matrix

在文件 DenseFeatures.cpp51 行定义.

CDenseFeatures ( CFile loader)

constructor loading features from file

参数
loaderFile object via which to load data

在文件 DenseFeatures.cpp57 行定义.

~CDenseFeatures ( )
virtual

在文件 DenseFeatures.cpp69 行定义.

成员函数说明

void add_preprocessor ( CPreprocessor p)
virtualinherited

add preprocessor

参数
ppreprocessor to set

在文件 Features.cpp82 行定义.

void add_subset ( SGVector< index_t subset)
virtualinherited

adds a subset of indices on top of the current subsets (possibly subset o subset. Calls subset_changed_post() afterwards

参数
subsetsubset of indices to add

CCombinedFeatures 重载.

在文件 Features.cpp307 行定义.

void add_to_dense_vec ( float64_t  alpha,
int32_t  vec_idx1,
float64_t vec2,
int32_t  vec2_len,
bool  abs_val = false 
)
virtual

add vector 1 multiplied with alpha to dense vector2

possible with subset

参数
alphascalar alpha
vec_idx1index of first vector
vec2pointer to real valued vector
vec2_lenlength of real valued vector
abs_valif true add the absolute value

实现了 CDotFeatures.

在文件 DenseFeatures.cpp498 行定义.

void add_to_dense_vec ( float64_t  alpha,
int32_t  vec_idx1,
float64_t vec2,
int32_t  vec2_len,
bool  abs_val 
)
virtual

add vector 1 multiplied with alpha to dense vector2

参数
alphascalar alpha
vec_idx1index of first vector
vec2pointer to real valued vector
vec2_lenlength of real valued vector
abs_valif true add the absolute value

实现了 CDotFeatures.

在文件 DenseFeatures.cpp524 行定义.

bool apply_preprocessor ( bool  force_preprocessing = false)
virtual

apply preprocessor

applies preprocessors to ALL features (subset removed before and restored afterwards)

not possible with subset

参数
force_preprocessingif preprocssing shall be forced
返回
if applying was successful

在文件 DenseFeatures.cpp379 行定义.

void benchmark_add_to_dense_vector ( int32_t  repeats = 5)
inherited

run benchmark for add_to_dense_vec

在文件 DotFeatures.cpp318 行定义.

void benchmark_dense_dot_range ( int32_t  repeats = 5)
inherited

run benchmark for dense_dot_range

在文件 DotFeatures.cpp341 行定义.

void build_gradient_parameter_dictionary ( CMap< TParameter *, CSGObject * > *  dict)
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.

参数
dictdictionary of parameters to be built.

在文件 SGObject.cpp1174 行定义.

bool check_feature_compatibility ( CFeatures f) const
inherited

check feature compatibility

参数
ffeatures to check for compatibility
返回
if features are compatible

在文件 Features.cpp280 行定义.

void clean_preprocessors ( )
inherited

clears all preprocs

在文件 Features.cpp113 行定义.

CSGObject * clone ( )
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.

返回
an identical copy of the given object, which is disjoint in memory. NULL if the clone fails. Note that the returned object is SG_REF'ed

在文件 SGObject.cpp1291 行定义.

SGMatrix< float64_t > compute_cov ( CDotFeatures lhs,
CDotFeatures rhs 
)
staticinherited

compute the covariance of two CDotFeatures together

返回
covariance

在文件 DotFeatures.cpp469 行定义.

ST * compute_feature_vector ( int32_t  num,
int32_t &  len,
ST *  target = NULL 
)
protectedvirtual

compute feature vector for sample num if target is set the vector is written to target len is returned by reference

NOT IMPLEMENTED!

参数
numnum
lenlen
target
返回
feature vector

CTOPFeatures, CFKFeatures , 以及 CRealFileFeatures 重载.

在文件 DenseFeatures.cpp609 行定义.

void copy_feature_matrix ( SGMatrix< ST >  src)
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

参数
srcfeature matrix to copy

在文件 DenseFeatures.cpp343 行定义.

CFeatures * copy_subset ( SGVector< index_t indices)
virtual

Creates a new CFeatures instance containing copies of the elements which are specified by the provided indices.

possible with subset

参数
indicesindices of feature elements to copy
返回
new CFeatures instance with copies of feature data

重载 CFeatures .

在文件 DenseFeatures.cpp592 行定义.

CFeatures * create_merged_copy ( CList other)
virtual

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.

参数
otherfeature object to append
返回
new feature object which contains copy of data of this instance and of given one

重载 CFeatures .

在文件 DenseFeatures.cpp946 行定义.

CFeatures * create_merged_copy ( CFeatures other)
virtual

Convenience method for method with same name and list as parameter.

参数
otherfeature object to append
返回
new feature object which contains copy of data of this instance and of given one

重载 CFeatures .

在文件 DenseFeatures.cpp1028 行定义.

virtual CSGObject* deep_copy ( ) const
virtualinherited

A deep copy. All the instance variables will also be copied.

在文件 SGObject.h126 行定义.

void del_preprocessor ( int32_t  num)
virtualinherited

delete preprocessor from list

参数
numindex of preprocessor in list

在文件 Features.cpp119 行定义.

virtual float64_t dense_dot ( int32_t  vec_idx1,
const float64_t vec2,
int32_t  vec2_len 
)
virtual

compute dot product between vector1 and a dense vector

possible with subset

参数
vec_idx1index of first vector
vec2pointer to real valued vector
vec2_lenlength of real valued vector

实现了 CDotFeatures.

float64_t dense_dot ( int32_t  vec_idx1,
const float64_t vec2,
int32_t  vec2_len 
)
virtual

compute dot product between vector1 and a dense vector

参数
vec_idx1index of first vector
vec2pointer to real valued vector
vec2_lenlength of real valued vector

实现了 CDotFeatures.

在文件 DenseFeatures.cpp655 行定义.

float64_t dense_dot ( int32_t  vec_idx1,
const float64_t vec2,
int32_t  vec2_len 
)
virtual

compute dot product between vector1 and a dense vector

参数
vec_idx1index of first vector
vec2pointer to real valued vector
vec2_lenlength of real valued vector

实现了 CDotFeatures.

在文件 DenseFeatures.cpp675 行定义.

float64_t dense_dot ( int32_t  vec_idx1,
const float64_t vec2,
int32_t  vec2_len 
)
virtual

compute dot product between vector1 and a dense vector

参数
vec_idx1index of first vector
vec2pointer to real valued vector
vec2_lenlength of real valued vector

实现了 CDotFeatures.

在文件 DenseFeatures.cpp695 行定义.

float64_t dense_dot ( int32_t  vec_idx1,
const float64_t vec2,
int32_t  vec2_len 
)
virtual

compute dot product between vector1 and a dense vector

参数
vec_idx1index of first vector
vec2pointer to real valued vector
vec2_lenlength of real valued vector

实现了 CDotFeatures.

在文件 DenseFeatures.cpp715 行定义.

float64_t dense_dot ( int32_t  vec_idx1,
const float64_t vec2,
int32_t  vec2_len 
)
virtual

compute dot product between vector1 and a dense vector

参数
vec_idx1index of first vector
vec2pointer to real valued vector
vec2_lenlength of real valued vector

实现了 CDotFeatures.

在文件 DenseFeatures.cpp735 行定义.

float64_t dense_dot ( int32_t  vec_idx1,
const float64_t vec2,
int32_t  vec2_len 
)
virtual

compute dot product between vector1 and a dense vector

参数
vec_idx1index of first vector
vec2pointer to real valued vector
vec2_lenlength of real valued vector

实现了 CDotFeatures.

在文件 DenseFeatures.cpp755 行定义.

float64_t dense_dot ( int32_t  vec_idx1,
const float64_t vec2,
int32_t  vec2_len 
)
virtual

compute dot product between vector1 and a dense vector

参数
vec_idx1index of first vector
vec2pointer to real valued vector
vec2_lenlength of real valued vector

实现了 CDotFeatures.

在文件 DenseFeatures.cpp775 行定义.

float64_t dense_dot ( int32_t  vec_idx1,
const float64_t vec2,
int32_t  vec2_len 
)
virtual

compute dot product between vector1 and a dense vector

参数
vec_idx1index of first vector
vec2pointer to real valued vector
vec2_lenlength of real valued vector

实现了 CDotFeatures.

在文件 DenseFeatures.cpp795 行定义.

float64_t dense_dot ( int32_t  vec_idx1,
const float64_t vec2,
int32_t  vec2_len 
)
virtual

compute dot product between vector1 and a dense vector

参数
vec_idx1index of first vector
vec2pointer to real valued vector
vec2_lenlength of real valued vector

实现了 CDotFeatures.

在文件 DenseFeatures.cpp815 行定义.

float64_t dense_dot ( int32_t  vec_idx1,
const float64_t vec2,
int32_t  vec2_len 
)
virtual

compute dot product between vector1 and a dense vector

参数
vec_idx1index of first vector
vec2pointer to real valued vector
vec2_lenlength of real valued vector

实现了 CDotFeatures.

在文件 DenseFeatures.cpp835 行定义.

float64_t dense_dot ( int32_t  vec_idx1,
const float64_t vec2,
int32_t  vec2_len 
)
virtual

compute dot product between vector1 and a dense vector

参数
vec_idx1index of first vector
vec2pointer to real valued vector
vec2_lenlength of real valued vector

实现了 CDotFeatures.

在文件 DenseFeatures.cpp855 行定义.

float64_t dense_dot ( int32_t  vec_idx1,
const float64_t vec2,
int32_t  vec2_len 
)
virtual

compute dot product between vector1 and a dense vector

参数
vec_idx1index of first vector
vec2pointer to real valued vector
vec2_lenlength of real valued vector

实现了 CDotFeatures.

在文件 DenseFeatures.cpp875 行定义.

float64_t dense_dot ( int32_t  vec_idx1,
const float64_t vec2,
int32_t  vec2_len 
)
virtual

compute dot product between vector1 and a dense vector

参数
vec_idx1index of first vector
vec2pointer to real valued vector
vec2_lenlength of real valued vector

实现了 CDotFeatures.

在文件 DenseFeatures.cpp892 行定义.

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 
)
virtualinherited

Compute the dot product for a range of vectors. This function makes use of dense_dot alphas[i] * sparse[i]^T * w + b

参数
outputresult for the given vector range
startstart vector range from this idx
stopstop vector range at this idx
alphasscalars to multiply with, may be NULL
vecdense vector to compute dot product with
dimlength of the dense vector
bbias

note that the result will be written to output[0...(stop-start-1)]

CCombinedDotFeatures , 以及 CHashedWDFeaturesTransposed 重载.

在文件 DotFeatures.cpp67 行定义.

void * dense_dot_range_helper ( void *  p)
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.cpp231 行定义.

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 
)
virtualinherited

Compute the dot product for a subset of vectors. This function makes use of dense_dot alphas[i] * sparse[i]^T * w + b

参数
sub_indexindex for which to compute outputs
numlength of index
outputresult for the given vector range
alphasscalars to multiply with, may be NULL
vecdense vector to compute dot product with
dimlength of the dense vector
bbias

CCombinedDotFeatures , 以及 CHashedWDFeaturesTransposed 重载.

在文件 DotFeatures.cpp153 行定义.

float64_t dense_dot_sgvec ( int32_t  vec_idx1,
const SGVector< float64_t vec2 
)
virtualinherited

compute dot product between vector1 and a dense vector

参数
vec_idx1index of first vector
vec2dense vector

CHashedDocDotFeatures 重载.

在文件 DotFeatures.cpp62 行定义.

void display_progress ( int32_t  start,
int32_t  stop,
int32_t  v 
)
protectedinherited

display progress output

参数
startminimum value
stopmaximum value
vcurrent value

在文件 DotFeatures.cpp528 行定义.

float64_t dot ( int32_t  vec_idx1,
CDotFeatures df,
int32_t  vec_idx2 
)
virtual

compute dot product between vector1 and vector2, appointed by their indices

possible with subset

参数
vec_idx1index of first vector
dfDotFeatures (of same kind) to compute dot product with
vec_idx2index of second vector

实现了 CDotFeatures.

在文件 DenseFeatures.cpp476 行定义.

CFeatures * duplicate ( ) const
virtual

duplicate feature object

返回
feature object

实现了 CFeatures.

在文件 DenseFeatures.cpp64 行定义.

bool equals ( CSGObject other,
float64_t  accuracy = 0.0,
bool  tolerant = false 
)
virtualinherited

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.

参数
otherobject to compare with
accuracyaccuracy to use for comparison (optional)
tolerantallows linient check on float equality (within accuracy)
返回
true if all parameters were equal, false if not

在文件 SGObject.cpp1195 行定义.

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.

参数
idxindex with features that shall remain in the feature matrix
idx_lenlength of the index

Note: assumes idx is sorted

在文件 DenseFeatures.cpp237 行定义.

void free_feature_iterator ( void *  iterator)
virtual

clean up iterator call this function with the iterator returned by get_first_feature

参数
iteratoras returned by get_first_feature

实现了 CDotFeatures.

在文件 DenseFeatures.cpp582 行定义.

void free_feature_matrix ( )

free feature matrix

Any subset is removed

在文件 DenseFeatures.cpp81 行定义.

void free_feature_vector ( ST *  feat_vec,
int32_t  num,
bool  dofree 
)

free feature vector

possible with subset

参数
feat_vecfeature vector to free
numindex in feature cache
dofreeif vector should be really deleted

在文件 DenseFeatures.cpp191 行定义.

void free_feature_vector ( SGVector< ST >  vec,
int32_t  num 
)

free feature vector

possible with subset

参数
vecfeature vector to free
numindex in feature cache

在文件 DenseFeatures.cpp200 行定义.

void free_features ( )

free feature matrix and cache

Any subset is removed

在文件 DenseFeatures.cpp74 行定义.

int32_t get_cache_size ( ) const
inherited

get cache size

返回
cache size

在文件 Features.cpp157 行定义.

float64_t get_combined_feature_weight ( )
inherited

get combined feature weight

返回
combined feature weight

在文件 DotFeatures.h151 行定义.

SGMatrix< float64_t > get_computed_dot_feature_matrix ( )
inherited

compute the feature matrix in feature space

返回
computed feature matrix

在文件 DotFeatures.cpp284 行定义.

SGVector< float64_t > get_computed_dot_feature_vector ( int32_t  num)
inherited

compute the feature vector in feature space

返回
computed feature vector

在文件 DotFeatures.cpp305 行定义.

SGMatrix< float64_t > get_cov ( )
virtualinherited

get covariance

返回
covariance

在文件 DotFeatures.cpp427 行定义.

int32_t get_dim_feature_space ( ) const
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())

返回
dimensionality

实现了 CDotFeatures.

在文件 DenseFeatures.cpp474 行定义.

EFeatureClass get_feature_class ( ) const
virtual

get feature class

返回
feature class DENSE

实现了 CFeatures.

在文件 DenseFeatures.cpp457 行定义.

void * get_feature_iterator ( int32_t  vector_index)
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

参数
vector_indexthe index of the vector over whose components to iterate over
返回
feature iterator (to be passed to get_next_feature)

实现了 CDotFeatures.

在文件 DenseFeatures.cpp553 行定义.

SGMatrix< ST > get_feature_matrix ( )

Getter the feature matrix

in-place without subset a copy with subset

返回
matrix feature matrix

在文件 DenseFeatures.cpp267 行定义.

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

参数
num_featnumber of features in matrix
num_vecnumber of vectors in matrix
返回
feature matrix

在文件 DenseFeatures.cpp305 行定义.

virtual EFeatureType get_feature_type ( ) const
virtual

get feature type

返回
templated feature type

实现了 CFeatures.

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)

参数
numindex of feature vector
lenlength is returned by reference
dofreewhether returned vector must be freed by caller via free_feature_vector
返回
feature vector

在文件 DenseFeatures.cpp89 行定义.

SGVector< ST > get_feature_vector ( int32_t  num)

get feature vector num

possible with subset

参数
numindex of vector
返回
feature vector

在文件 DenseFeatures.cpp174 行定义.

SGIO * get_global_io ( )
inherited

get the io object

返回
io object

在文件 SGObject.cpp174 行定义.

Parallel * get_global_parallel ( )
inherited

get the parallel object

返回
parallel object

在文件 SGObject.cpp215 行定义.

Version * get_global_version ( )
inherited

get the version object

返回
version object

在文件 SGObject.cpp228 行定义.

SGVector< float64_t > get_mean ( )
virtualinherited

get mean

返回
mean returned

在文件 DotFeatures.cpp384 行定义.

SGVector< float64_t > get_mean ( CDotFeatures lhs,
CDotFeatures rhs 
)
staticinherited

get mean of two CDotFeature objects

返回
mean returned

在文件 DotFeatures.cpp402 行定义.

SGStringList< char > get_modelsel_names ( )
inherited
返回
vector of names of all parameters which are registered for model selection

在文件 SGObject.cpp1066 行定义.

char * get_modsel_param_descr ( const char *  param_name)
inherited

Returns description of a given parameter string, if it exists. SG_ERROR otherwise

参数
param_namename of the parameter
返回
description of the parameter

在文件 SGObject.cpp1090 行定义.

index_t get_modsel_param_index ( const char *  param_name)
inherited

Returns index of model selection parameter with provided index

参数
param_namename of model selection parameter
返回
index of model selection parameter with provided name, -1 if there is no such

在文件 SGObject.cpp1103 行定义.

virtual const char* get_name ( ) const
virtual
返回
object name

实现了 CSGObject.

CTOPFeatures, CFKFeatures , 以及 CRealFileFeatures 重载.

在文件 DenseFeatures.h503 行定义.

bool get_next_feature ( int32_t &  index,
float64_t value,
void *  iterator 
)
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

参数
indexis returned by reference (-1 when not available)
valueis returned by reference
iteratoras returned by get_first_feature
返回
true if a new non-zero feature got returned

实现了 CDotFeatures.

在文件 DenseFeatures.cpp569 行定义.

int32_t get_nnz_features_for_vector ( int32_t  num)
virtual

get number of non-zero features in vector

参数
numwhich vector
返回
number of non-zero features in vector

实现了 CDotFeatures.

在文件 DenseFeatures.cpp548 行定义.

int32_t get_num_features ( ) const

get number of features (of possible subset)

返回
number of features

在文件 DenseFeatures.cpp426 行定义.

int32_t get_num_preprocessed ( ) const
inherited

get the number of applied preprocs

返回
number of applied preprocessors

在文件 Features.cpp100 行定义.

int32_t get_num_preprocessors ( ) const
inherited

get number of preprocessors

返回
number of preprocessors

在文件 Features.cpp152 行定义.

int32_t get_num_vectors ( ) const
virtual

get number of feature vectors

返回
number of feature vectors

实现了 CFeatures.

在文件 DenseFeatures.cpp421 行定义.

CPreprocessor * get_preprocessor ( int32_t  num) const
inherited

get specified preprocessor

参数
numindex of preprocessor in list

在文件 Features.cpp90 行定义.

CSubsetStack * get_subset_stack ( )
virtualinherited

returns subset stack

返回
subset stack

在文件 Features.cpp325 行定义.

CDenseFeatures< ST > * get_transposed ( )

get a transposed copy of the features

possible with subset

返回
transposed copy

在文件 DenseFeatures.cpp312 行定义.

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

参数
num_featnumber of features in matrix
num_vecnumber of vectors in matrix
返回
transposed sparse feature matrix

在文件 DenseFeatures.cpp321 行定义.

bool has_property ( EFeatureProperty  p) const
inherited

check if features have given property

参数
pfeature property
返回
if features have given property

在文件 Features.cpp292 行定义.

void initialize_cache ( )

Initialize cache

not possible with subset

在文件 DenseFeatures.cpp443 行定义.

bool is_equal ( CDenseFeatures< ST > *  rhs)
virtual

checks if the contents of this CDenseFeatures object are the same to the contents of rhs

参数
rhsother CDenseFeatures object to compare to this one
返回
whether they represent the same information

在文件 DenseFeatures.cpp912 行定义.

bool is_generic ( EPrimitiveType *  generic) const
virtualinherited

If the SGSerializable is a class template then TRUE will be returned and GENERIC is set to the type of the generic.

参数
genericset to the type of the generic if returning TRUE
返回
TRUE if a class template.

在文件 SGObject.cpp234 行定义.

bool is_preprocessed ( int32_t  num) const
inherited

get whether specified preprocessor was already applied

参数
numindex of preprocessor in list

在文件 Features.cpp146 行定义.

void list_feature_obj ( ) const
inherited

list feature object

在文件 Features.cpp168 行定义.

void list_preprocessors ( )
inherited

print preprocessors

在文件 Features.cpp128 行定义.

void load ( CFile loader)
virtual

load features from file

参数
loaderFile object via which to load data

重载 CFeatures .

在文件 DenseFeatures.cpp1044 行定义.

DynArray< TParameter * > * load_all_file_parameters ( int32_t  file_version,
int32_t  current_version,
CSerializableFile file,
const char *  prefix = "" 
)
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)

参数
file_versionparameter version of the file
current_versionversion from which mapping begins (you want to use Version::get_version_parameter() for this in most cases)
filefile to load from
prefixprefix for members
返回
(sorted) array of created TParameter instances with file data

在文件 SGObject.cpp639 行定义.

DynArray< TParameter * > * load_file_parameters ( const SGParamInfo param_info,
int32_t  file_version,
CSerializableFile file,
const char *  prefix = "" 
)
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

参数
param_infoinformation of parameter
file_versionparameter version of the file, must be <= provided parameter version
filefile to load from
prefixprefix for members
返回
new array with TParameter instances with the attached data

在文件 SGObject.cpp480 行定义.

bool load_serializable ( CSerializableFile file,
const char *  prefix = "",
int32_t  param_version = Version::get_version_parameter() 
)
virtualinherited

Load this object from file. If it will fail (returning FALSE) then this object will contain inconsistent data and should not be used!

参数
filewhere to load from
prefixprefix for members
param_version(optional) a parameter version different to (this is mainly for testing, better do not use)
返回
TRUE if done, otherwise FALSE

在文件 SGObject.cpp311 行定义.

void load_serializable_post ( ) throw (ShogunException)
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.

异常
ShogunExceptionWill be thrown if an error occurres.

CWeightedDegreePositionStringKernel, CKernel, CList, CAlphabet, CLinearHMM, CGaussianKernel, CInverseMultiQuadricKernel, CCircularKernel , 以及 CExponentialKernel 重载.

在文件 SGObject.cpp995 行定义.

void load_serializable_pre ( ) throw (ShogunException)
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.

异常
ShogunExceptionWill be thrown if an error occurres.

CDynamicArray< T >, CDynamicArray< float64_t >, CDynamicArray< float32_t >, CDynamicArray< int32_t >, CDynamicArray< char >, CDynamicArray< bool > , 以及 CDynamicObjectArray 重载.

在文件 SGObject.cpp990 行定义.

void map_parameters ( DynArray< TParameter * > *  param_base,
int32_t &  base_version,
DynArray< const SGParamInfo * > *  target_param_infos 
)
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

参数
param_baseset of TParameter instances that are mapped to the provided target parameter infos
base_versionversion of the parameter base
target_param_infosset of SGParamInfo instances that specify the target parameter base

在文件 SGObject.cpp677 行定义.

TParameter * migrate ( DynArray< TParameter * > *  param_base,
const SGParamInfo target 
)
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

参数
param_baseset of TParameter instances to use for migration
targetparameter info for the resulting TParameter
返回
a new TParameter instance with migrated data from the base of the type which is specified by the target parameter

在文件 SGObject.cpp884 行定义.

void obtain_from_dot ( CDotFeatures df)

obtain dense features from other dotfeatures

removes any subset before

参数
dfdotfeatures to obtain features from

在文件 DenseFeatures.cpp355 行定义.

CDenseFeatures< ST > * obtain_from_generic ( CFeatures *const  base_features)
static

helper method used to specialize a base class instance

在文件 DenseFeatures.cpp1057 行定义.

void one_to_one_migration_prepare ( DynArray< TParameter * > *  param_base,
const SGParamInfo target,
TParameter *&  replacement,
TParameter *&  to_migrate,
char *  old_name = NULL 
)
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)

参数
param_baseset of TParameter instances to use for migration
targetparameter info for the resulting TParameter
replacement(used as output) here the TParameter instance which is returned by migration is created into
to_migratethe only source that is used for migration
old_namewith this parameter, a name change may be specified

在文件 SGObject.cpp824 行定义.

bool parameter_hash_changed ( )
virtualinherited
返回
whether parameter combination has changed since last update

在文件 SGObject.cpp200 行定义.

void print_modsel_params ( )
inherited

prints all parameter registered for model selection and their type

在文件 SGObject.cpp1042 行定义.

void print_serializable ( const char *  prefix = "")
virtualinherited

prints registered parameters out

参数
prefixprefix for members

在文件 SGObject.cpp246 行定义.

void remove_all_subsets ( )
virtualinherited

removes all subsets Calls subset_changed_post() afterwards

CCombinedFeatures 重载.

在文件 Features.cpp319 行定义.

void remove_subset ( )
virtualinherited

removes that last added subset from subset stack, if existing Calls subset_changed_post() afterwards

CCombinedFeatures 重载.

在文件 Features.cpp313 行定义.

bool reshape ( int32_t  p_num_features,
int32_t  p_num_vectors 
)
virtual

reshape

not possible with subset

参数
p_num_featuresnew number of features
p_num_vectorsnew number of vectors
返回
if reshaping was successful

重载 CFeatures .

在文件 DenseFeatures.cpp459 行定义.

void save ( CFile saver)
virtual

save features to file

参数
saverFile object via which to save data

重载 CFeatures .

在文件 DenseFeatures.cpp1052 行定义.

bool save_serializable ( CSerializableFile file,
const char *  prefix = "",
int32_t  param_version = Version::get_version_parameter() 
)
virtualinherited

Save this object to file.

参数
filewhere to save the object; will be closed during returning if PREFIX is an empty string.
prefixprefix for members
param_version(optional) a parameter version different to (this is mainly for testing, better do not use)
返回
TRUE if done, otherwise FALSE

在文件 SGObject.cpp252 行定义.

void save_serializable_post ( ) throw (ShogunException)
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.

异常
ShogunExceptionWill be thrown if an error occurres.

CKernel 重载.

在文件 SGObject.cpp1005 行定义.

void save_serializable_pre ( ) throw (ShogunException)
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.

异常
ShogunExceptionWill be thrown if an error occurres.

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.cpp1000 行定义.

void set_combined_feature_weight ( float64_t  nw)
inherited

set combined kernel weight

参数
nwnew combined feature weight

在文件 DotFeatures.h157 行定义.

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

参数
matrixfeature matrix to set

在文件 DenseFeatures.cpp296 行定义.

void set_feature_vector ( SGVector< ST >  vector,
int32_t  num 
)

set feature vector num

possible with subset

参数
vectorvector
numindex if vector to set

在文件 DenseFeatures.cpp152 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp41 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp46 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp51 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp56 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp61 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp66 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp71 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp76 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp81 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp86 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp91 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp96 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp101 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp106 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp111 行定义.

void set_generic ( )
inherited

set generic type to T

void set_global_io ( SGIO io)
inherited

set the io object

参数
ioio object to use

在文件 SGObject.cpp167 行定义.

void set_global_parallel ( Parallel parallel)
inherited

set the parallel object

参数
parallelparallel object to use

在文件 SGObject.cpp180 行定义.

void set_global_version ( Version version)
inherited

set the version object

参数
versionversion object to use

在文件 SGObject.cpp221 行定义.

void set_num_features ( int32_t  num)

set number of features

参数
numnumber to set

在文件 DenseFeatures.cpp428 行定义.

void set_num_vectors ( int32_t  num)

set number of vectors

not possible with subset

参数
numnumber to set

在文件 DenseFeatures.cpp434 行定义.

void set_preprocessed ( int32_t  num)
inherited

set applied flag for preprocessor

参数
numindex of preprocessor in list

在文件 Features.cpp140 行定义.

void set_property ( EFeatureProperty  p)
inherited

set property

参数
pkernel property to set

在文件 Features.cpp297 行定义.

virtual CSGObject* shallow_copy ( ) const
virtualinherited

A shallow copy. All the SGObject instance variables will be simply assigned and SG_REF-ed.

CGaussianKernel 重载.

在文件 SGObject.h117 行定义.

SGMatrix< ST > steal_feature_matrix ( )

steals feature matrix, i.e. returns matrix and forget about it subset is ignored

返回
matrix feature matrix

在文件 DenseFeatures.cpp286 行定义.

virtual void subset_changed_post ( )
virtualinherited

method may be overwritten to update things that depend on subset

CStringFeatures< ST >, CStringFeatures< T >, CStringFeatures< uint8_t >, CStringFeatures< char > , 以及 CStringFeatures< uint16_t > 重载.

在文件 Features.h271 行定义.

void unset_generic ( )
inherited

unset generic type

this has to be called in classes specializing a template class

在文件 SGObject.cpp241 行定义.

void unset_property ( EFeatureProperty  p)
inherited

unset property

参数
pkernel property to unset

在文件 Features.cpp302 行定义.

void update_parameter_hash ( )
virtualinherited

Updates the hash of current parameter combination

在文件 SGObject.cpp187 行定义.

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

参数
idxindex with examples that shall remain in the feature matrix
idx_lenlength of the index

Note: assumes idx is sorted

在文件 DenseFeatures.cpp206 行定义.

类成员变量说明

float64_t combined_weight
protectedinherited

feature weighting in combined dot features

在文件 DotFeatures.h246 行定义.

CCache<ST>* feature_cache
protected

feature cache

在文件 DenseFeatures.h537 行定义.

SGMatrix<ST> feature_matrix
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

在文件 DenseFeatures.h534 行定义.

SGIO* io
inherited

io

在文件 SGObject.h473 行定义.

Parameter* m_gradient_parameters
inherited

parameters wrt which we can compute gradients

在文件 SGObject.h488 行定义.

uint32_t m_hash
inherited

Hash of parameter values

在文件 SGObject.h494 行定义.

Parameter* m_model_selection_parameters
inherited

model selection parameters

在文件 SGObject.h485 行定义.

ParameterMap* m_parameter_map
inherited

map for different parameter versions

在文件 SGObject.h491 行定义.

Parameter* m_parameters
inherited

parameters

在文件 SGObject.h482 行定义.

CSubsetStack* m_subset_stack
protectedinherited

subset used for index transformations

在文件 Features.h302 行定义.

int32_t num_features
protected

number of features in cache

在文件 DenseFeatures.h528 行定义.

int32_t num_vectors
protected

number of vectors in cache

在文件 DenseFeatures.h525 行定义.

Parallel* parallel
inherited

parallel

在文件 SGObject.h476 行定义.

Version* version
inherited

version

在文件 SGObject.h479 行定义.


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