The class TOPFeatures implements TOP kernel features obtained from two Hidden Markov models.
It was used in
K. Tsuda, M. Kawanabe, G. Raetsch, S. Sonnenburg, and K.R. Mueller. A new discriminative kernel from probabilistic models. Neural Computation, 14:2397-2414, 2002.
which also has the details.
Note that TOP-features are computed on the fly, so to be effective feature caching should be enabled.
It inherits its functionality from CDenseFeatures, which should be consulted for further reference.
在文件 TOPFeatures.h 第 70 行定义.
Public 成员函数 | |
CTOPFeatures () | |
CTOPFeatures (int32_t size, CHMM *p, CHMM *n, bool neglin, bool poslin) | |
CTOPFeatures (const CTOPFeatures &orig) | |
virtual | ~CTOPFeatures () |
void | set_models (CHMM *p, CHMM *n) |
virtual float64_t * | set_feature_matrix () |
int32_t | compute_num_features () |
bool | compute_relevant_indizes (CHMM *hmm, T_HMM_INDIZES *hmm_idx) |
virtual const char * | get_name () const |
virtual CFeatures * | duplicate () const |
void | free_feature_matrix () |
void | free_features () |
float64_t * | get_feature_vector (int32_t num, int32_t &len, bool &dofree) |
SGVector< float64_t > | get_feature_vector (int32_t num) |
void | set_feature_vector (SGVector< float64_t > vector, int32_t num) |
void | free_feature_vector (float64_t *feat_vec, int32_t num, bool dofree) |
void | free_feature_vector (SGVector< float64_t > 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< float64_t > | get_feature_matrix () |
float64_t * | get_feature_matrix (int32_t &num_feat, int32_t &num_vec) |
SGMatrix< float64_t > | steal_feature_matrix () |
void | set_feature_matrix (SGMatrix< float64_t > matrix) |
CDenseFeatures< float64_t > * | get_transposed () |
float64_t * | get_transposed (int32_t &num_feat, int32_t &num_vec) |
virtual void | copy_feature_matrix (SGMatrix< float64_t > 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 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 () |
静态 Public 成员函数 | |
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 属性 | |
SGIO * | io |
Parallel * | parallel |
Version * | version |
Parameter * | m_parameters |
Parameter * | m_model_selection_parameters |
Parameter * | m_gradient_parameters |
uint32_t | m_hash |
Protected 成员函数 | |
virtual float64_t * | compute_feature_vector (int32_t num, int32_t &len, float64_t *target=NULL) |
void | compute_feature_vector (float64_t *addr, int32_t num, int32_t &len) |
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 属性 | |
CHMM * | pos |
CHMM * | neg |
bool | neglinear |
bool | poslinear |
T_HMM_INDIZES | pos_relevant_indizes |
T_HMM_INDIZES | neg_relevant_indizes |
int32_t | num_vectors |
number of vectors in cache 更多... | |
int32_t | num_features |
number of features in cache 更多... | |
SGMatrix< float64_t > | feature_matrix |
CCache< float64_t > * | feature_cache |
float64_t | combined_weight |
feature weighting in combined dot features 更多... | |
CSubsetStack * | m_subset_stack |
CTOPFeatures | ( | ) |
default constructor
在文件 TOPFeatures.cpp 第 18 行定义.
CTOPFeatures | ( | int32_t | size, |
CHMM * | p, | ||
CHMM * | n, | ||
bool | neglin, | ||
bool | poslin | ||
) |
constructor
size | cache size |
p | positive HMM |
n | negative HMM |
neglin | if negative HMM is of linear shape |
poslin | if positive HMM is of linear shape |
在文件 TOPFeatures.cpp 第 23 行定义.
CTOPFeatures | ( | const CTOPFeatures & | orig | ) |
copy constructor
在文件 TOPFeatures.cpp 第 34 行定义.
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virtual |
在文件 TOPFeatures.cpp 第 44 行定义.
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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 |
被 CCombinedFeatures 重载.
在文件 Features.cpp 第 310 行定义.
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. |
在文件 Features.cpp 第 316 行定义.
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virtualinherited |
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 |
实现了 CDotFeatures.
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virtualinherited |
apply preprocessor
applies preprocessors to ALL features (subset removed before and restored afterwards)
not possible with subset
force_preprocessing | if preprocssing shall be forced |
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inherited |
run benchmark for add_to_dense_vec
在文件 DotFeatures.cpp 第 318 行定义.
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inherited |
run benchmark for dense_dot_range
在文件 DotFeatures.cpp 第 341 行定义.
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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. |
在文件 SGObject.cpp 第 597 行定义.
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inherited |
check feature compatibility
f | features to check for compatibility |
在文件 Features.cpp 第 283 行定义.
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inherited |
clears all preprocs
在文件 Features.cpp 第 116 行定义.
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virtualinherited |
Creates a clone of the current object. This is done via recursively traversing all parameters, which corresponds to a deep copy. Calling equals on the cloned object always returns true although none of the memory of both objects overlaps.
在文件 SGObject.cpp 第 714 行定义.
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staticinherited |
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protectedvirtual |
compute feature vector
num | num |
len | len |
target |
重载 CDenseFeatures< float64_t > .
在文件 TOPFeatures.cpp 第 86 行定义.
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protected |
computes the feature vector to the address addr
addr | address |
num | num |
len | len |
在文件 TOPFeatures.cpp 第 102 行定义.
int32_t compute_num_features | ( | ) |
bool compute_relevant_indizes | ( | CHMM * | hmm, |
T_HMM_INDIZES * | hmm_idx | ||
) |
compute relevant indices
hmm | HMM to compute for |
hmm_idx | HMM index |
在文件 TOPFeatures.cpp 第 229 行定义.
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 |
重载 CFeatures .
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 |
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 |
重载 CFeatures .
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 |
重载 CFeatures .
Convenience method for method with same name and list as parameter.
other | feature object to append |
重载 CFeatures .
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virtualinherited |
A deep copy. All the instance variables will also be copied.
在文件 SGObject.cpp 第 198 行定义.
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virtualinherited |
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virtualinherited |
compute dot product between vector1 and a dense vector
possible with subset
vec_idx1 | index of first vector |
vec2 | pointer to real valued vector |
vec2_len | length of real valued vector |
实现了 CDotFeatures.
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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)]
被 CCombinedDotFeatures , 以及 CHashedWDFeaturesTransposed 重载.
在文件 DotFeatures.cpp 第 67 行定义.
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staticinherited |
Compute the dot product for a range of vectors. This function is called by the threads created in dense_dot_range
在文件 DotFeatures.cpp 第 231 行定义.
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virtualinherited |
Compute the dot product for a subset of vectors. This function makes use of dense_dot alphas[i] * sparse[i]^T * w + b
sub_index | index for which to compute outputs |
num | length of index |
output | result for the given vector range |
alphas | scalars to multiply with, may be NULL |
vec | dense vector to compute dot product with |
dim | length of the dense vector |
b | bias |
被 CCombinedDotFeatures , 以及 CHashedWDFeaturesTransposed 重载.
在文件 DotFeatures.cpp 第 153 行定义.
compute dot product between vector1 and a dense vector
vec_idx1 | index of first vector |
vec2 | dense vector |
被 CHashedDocDotFeatures 重载.
在文件 DotFeatures.cpp 第 62 行定义.
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protectedinherited |
display progress output
start | minimum value |
stop | maximum value |
v | current value |
在文件 DotFeatures.cpp 第 528 行定义.
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virtualinherited |
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 |
实现了 CDotFeatures.
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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.
other | object to compare with |
accuracy | accuracy to use for comparison (optional) |
tolerant | allows linient check on float equality (within accuracy) |
在文件 SGObject.cpp 第 618 行定义.
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inherited |
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
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virtualinherited |
clean up iterator call this function with the iterator returned by get_first_feature
iterator | as returned by get_first_feature |
实现了 CDotFeatures.
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inherited |
free feature matrix
Any subset is removed
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inherited |
free feature vector
possible with subset
feat_vec | feature vector to free |
num | index in feature cache |
dofree | if vector should be really deleted |
free feature vector
possible with subset
vec | feature vector to free |
num | index in feature cache |
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inherited |
free feature matrix and cache
Any subset is removed
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inherited |
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inherited |
compute the feature matrix in feature space
在文件 DotFeatures.cpp 第 284 行定义.
compute the feature vector in feature space
在文件 DotFeatures.cpp 第 305 行定义.
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virtualinherited |
obtain the dimensionality of the feature space
(not mix this up with the dimensionality of the input space, usually obtained via get_num_features())
实现了 CDotFeatures.
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virtualinherited |
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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 |
被 CDenseSubSamplesFeatures< ST > 重载.
在文件 Features.cpp 第 355 行定义.
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virtualinherited |
iterate over the non-zero features
call get_feature_iterator first, followed by get_next_feature and free_feature_iterator to cleanup
possible with subset
vector_index | the index of the vector over whose components to iterate over |
实现了 CDotFeatures.
Getter the feature matrix
in-place without subset a copy with subset
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inherited |
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 |
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virtualinherited |
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inherited |
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 |
get feature vector num
possible with subset
num | index of vector |
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inherited |
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inherited |
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inherited |
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staticinherited |
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inherited |
在文件 SGObject.cpp 第 498 行定义.
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inherited |
Returns description of a given parameter string, if it exists. SG_ERROR otherwise
param_name | name of the parameter |
在文件 SGObject.cpp 第 522 行定义.
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inherited |
Returns index of model selection parameter with provided index
param_name | name of model selection parameter |
在文件 SGObject.cpp 第 535 行定义.
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virtual |
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virtualinherited |
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 |
实现了 CDotFeatures.
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virtualinherited |
get number of non-zero features in vector
num | which vector |
实现了 CDotFeatures.
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inherited |
get number of features (of possible subset)
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inherited |
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inherited |
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virtualinherited |
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inherited |
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virtualinherited |
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inherited |
get a transposed copy of the features
possible with subset
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inherited |
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 |
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inherited |
check if features have given property
p | feature property |
在文件 Features.cpp 第 295 行定义.
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inherited |
Initialize cache
not possible with subset
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virtualinherited |
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 |
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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 |
在文件 SGObject.cpp 第 296 行定义.
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inherited |
get whether specified preprocessor was already applied
num | index of preprocessor in list |
在文件 Features.cpp 第 149 行定义.
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list feature object
在文件 Features.cpp 第 171 行定义.
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inherited |
print preprocessors
在文件 Features.cpp 第 131 行定义.
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virtualinherited |
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virtualinherited |
Load this object from file. If it will fail (returning FALSE) then this object will contain inconsistent data and should not be used!
file | where to load from |
prefix | prefix for members |
在文件 SGObject.cpp 第 369 行定义.
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protectedvirtualinherited |
Can (optionally) be overridden to post-initialize some member variables which are not PARAMETER::ADD'ed. Make sure that at first the overridden method BASE_CLASS::LOAD_SERIALIZABLE_POST is called.
ShogunException | will be thrown if an error occurs. |
被 CKernel, CWeightedDegreePositionStringKernel, CList, CAlphabet, CLinearHMM, CGaussianKernel, CInverseMultiQuadricKernel, CCircularKernel , 以及 CExponentialKernel 重载.
在文件 SGObject.cpp 第 426 行定义.
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protectedvirtualinherited |
Can (optionally) be overridden to pre-initialize some member variables which are not PARAMETER::ADD'ed. Make sure that at first the overridden method BASE_CLASS::LOAD_SERIALIZABLE_PRE is called.
ShogunException | will be thrown if an error occurs. |
被 CDynamicArray< T >, CDynamicArray< float64_t >, CDynamicArray< float32_t >, CDynamicArray< int32_t >, CDynamicArray< char >, CDynamicArray< bool > , 以及 CDynamicObjectArray 重载.
在文件 SGObject.cpp 第 421 行定义.
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inherited |
obtain dense features from other dotfeatures
removes any subset before
df | dotfeatures to obtain features from |
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staticinherited |
helper method used to specialize a base class instance
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virtualinherited |
在文件 SGObject.cpp 第 262 行定义.
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inherited |
prints all parameter registered for model selection and their type
在文件 SGObject.cpp 第 474 行定义.
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virtualinherited |
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virtualinherited |
removes all subsets Calls subset_changed_post() afterwards
被 CCombinedFeatures 重载.
在文件 Features.cpp 第 328 行定义.
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virtualinherited |
removes that last added subset from subset stack, if existing Calls subset_changed_post() afterwards
被 CCombinedFeatures 重载.
在文件 Features.cpp 第 322 行定义.
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virtualinherited |
reshape
not possible with subset
p_num_features | new number of features |
p_num_vectors | new number of vectors |
重载 CFeatures .
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virtualinherited |
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virtualinherited |
Save this object to file.
file | where to save the object; will be closed during returning if PREFIX is an empty string. |
prefix | prefix for members |
在文件 SGObject.cpp 第 314 行定义.
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protectedvirtualinherited |
Can (optionally) be overridden to post-initialize some member variables which are not PARAMETER::ADD'ed. Make sure that at first the overridden method BASE_CLASS::SAVE_SERIALIZABLE_POST is called.
ShogunException | will be thrown if an error occurs. |
被 CKernel 重载.
在文件 SGObject.cpp 第 436 行定义.
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protectedvirtualinherited |
Can (optionally) be overridden to pre-initialize some member variables which are not PARAMETER::ADD'ed. Make sure that at first the overridden method BASE_CLASS::SAVE_SERIALIZABLE_PRE is called.
ShogunException | will be thrown if an error occurs. |
被 CKernel, CDynamicArray< T >, CDynamicArray< float64_t >, CDynamicArray< float32_t >, CDynamicArray< int32_t >, CDynamicArray< char >, CDynamicArray< bool > , 以及 CDynamicObjectArray 重载.
在文件 SGObject.cpp 第 431 行定义.
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inherited |
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virtual |
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 |
set feature vector num
possible with subset
vector | vector |
num | index if vector to set |
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inherited |
在文件 SGObject.cpp 第 41 行定义.
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inherited |
在文件 SGObject.cpp 第 46 行定义.
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inherited |
在文件 SGObject.cpp 第 51 行定义.
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inherited |
在文件 SGObject.cpp 第 56 行定义.
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在文件 SGObject.cpp 第 61 行定义.
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inherited |
在文件 SGObject.cpp 第 66 行定义.
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inherited |
在文件 SGObject.cpp 第 71 行定义.
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在文件 SGObject.cpp 第 76 行定义.
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在文件 SGObject.cpp 第 81 行定义.
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在文件 SGObject.cpp 第 86 行定义.
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在文件 SGObject.cpp 第 91 行定义.
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在文件 SGObject.cpp 第 96 行定义.
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在文件 SGObject.cpp 第 101 行定义.
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在文件 SGObject.cpp 第 106 行定义.
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在文件 SGObject.cpp 第 111 行定义.
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set generic type to T
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set number of features
num | number to set |
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set number of vectors
not possible with subset
num | number to set |
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A shallow copy. All the SGObject instance variables will be simply assigned and SG_REF-ed.
被 CGaussianKernel 重载.
在文件 SGObject.cpp 第 192 行定义.
steals feature matrix, i.e. returns matrix and forget about it subset is ignored
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method may be overwritten to update things that depend on subset
被 CStringFeatures< ST >, CStringFeatures< T >, CStringFeatures< uint8_t >, CStringFeatures< char > , 以及 CStringFeatures< uint16_t > 重载.
在文件 Features.h 第 293 行定义.
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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?
被 CDenseSubSamplesFeatures< ST > 重载.
在文件 Features.h 第 323 行定义.
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unset generic type
this has to be called in classes specializing a template class
在文件 SGObject.cpp 第 303 行定义.
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Updates the hash of current parameter combination
在文件 SGObject.cpp 第 248 行定义.
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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
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feature weighting in combined dot features
在文件 DotFeatures.h 第 249 行定义.
feature cache
在文件 DenseFeatures.h 第 553 行定义.
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.h 第 550 行定义.
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io
在文件 SGObject.h 第 369 行定义.
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parameters wrt which we can compute gradients
在文件 SGObject.h 第 384 行定义.
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Hash of parameter values
在文件 SGObject.h 第 387 行定义.
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model selection parameters
在文件 SGObject.h 第 381 行定义.
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parameters
在文件 SGObject.h 第 378 行定义.
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subset used for index transformations
在文件 Features.h 第 352 行定义.
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negative HMM
在文件 TOPFeatures.h 第 147 行定义.
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negative relevant indices
在文件 TOPFeatures.h 第 156 行定义.
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if negative HMM is a LinearHMM
在文件 TOPFeatures.h 第 149 行定义.
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number of features in cache
在文件 DenseFeatures.h 第 544 行定义.
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number of vectors in cache
在文件 DenseFeatures.h 第 541 行定义.
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parallel
在文件 SGObject.h 第 372 行定义.
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positive HMM
在文件 TOPFeatures.h 第 145 行定义.
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positive relevant indices
在文件 TOPFeatures.h 第 154 行定义.
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if positive HMM is a LinearHMM
在文件 TOPFeatures.h 第 151 行定义.
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version
在文件 SGObject.h 第 375 行定义.