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CMultilabelLabels Class Reference

Detailed Description

Multilabel Labels for multi-label classification.

Labels are subsets of {0, ..., num_classes-1}

Definition at line 51 of file MultilabelLabels.h.

Inheritance diagram for CMultilabelLabels:
Inheritance graph
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Public Member Functions

 CMultilabelLabels ()
 
 CMultilabelLabels (int32_t num_classes)
 
 CMultilabelLabels (int32_t num_labels, int32_t num_classes)
 
 ~CMultilabelLabels ()
 
void ensure_valid (const char *context=NULL)
 
virtual ELabelType get_label_type () const
 
virtual const char * get_name () const
 
virtual int32_t get_num_labels () const
 
virtual int32_t get_num_classes () const
 
void set_labels (SGVector< int32_t > *labels)
 
SGVector< int32_t > ** get_class_labels () const
 
SGMatrix< int32_t > get_labels () const
 
SGVector< int32_t > get_label (int32_t j)
 
void set_label (int32_t j, SGVector< int32_t > label)
 
void set_class_labels (SGVector< int32_t > **labels_list)
 
void display () const
 
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 void set_value (float64_t value, int32_t idx)
 
virtual float64_t get_value (int32_t idx)
 
virtual void set_values (SGVector< float64_t > values)
 
virtual SGVector< float64_t > get_values ()
 
virtual CSGObject * shallow_copy () const
 
virtual CSGObject * deep_copy () const
 
virtual bool is_generic (EPrimitiveType *generic) const
 
template<class T >
void set_generic ()
 
template<>
void set_generic ()
 
template<>
void set_generic ()
 
template<>
void set_generic ()
 
template<>
void set_generic ()
 
template<>
void set_generic ()
 
template<>
void set_generic ()
 
template<>
void set_generic ()
 
template<>
void set_generic ()
 
template<>
void set_generic ()
 
template<>
void set_generic ()
 
template<>
void set_generic ()
 
template<>
void set_generic ()
 
template<>
void set_generic ()
 
template<>
void set_generic ()
 
template<>
void set_generic ()
 
void unset_generic ()
 
virtual void print_serializable (const char *prefix="")
 
virtual bool save_serializable (CSerializableFile *file, const char *prefix="")
 
virtual bool load_serializable (CSerializableFile *file, const char *prefix="")
 
void set_global_io (SGIO *io)
 
SGIO * get_global_io ()
 
void set_global_parallel (Parallel *parallel)
 
Parallel * get_global_parallel ()
 
void set_global_version (Version *version)
 
Version * get_global_version ()
 
SGStringList< char > get_modelsel_names ()
 
void print_modsel_params ()
 
char * get_modsel_param_descr (const char *param_name)
 
index_t get_modsel_param_index (const char *param_name)
 
void build_gradient_parameter_dictionary (CMap< TParameter *, CSGObject * > *dict)
 
virtual void update_parameter_hash ()
 
virtual bool parameter_hash_changed ()
 
virtual bool equals (CSGObject *other, float64_t accuracy=0.0, bool tolerant=false)
 
virtual CSGObject * clone ()
 

Static Public Member Functions

template<class S , class D >
static SGVector< D > to_dense (SGVector< S > *sparse, int32_t dense_len, D d_true, D d_false)
 

Public Attributes

SGIO * io
 
Parallel * parallel
 
Version * version
 
Parameter * m_parameters
 
Parameter * m_model_selection_parameters
 
Parameter * m_gradient_parameters
 
uint32_t m_hash
 

Protected Member Functions

virtual void load_serializable_pre () throw (ShogunException)
 
virtual void load_serializable_post () throw (ShogunException)
 
virtual void save_serializable_pre () throw (ShogunException)
 
virtual void save_serializable_post () throw (ShogunException)
 

Protected Attributes

int32_t m_num_labels
 
int32_t m_num_classes
 
SGVector< int32_t > * m_labels
 
CSubsetStack * m_subset_stack
 
SGVector< float64_t > m_current_values
 

Constructor & Destructor Documentation

CMultilabelLabels ( )

default constructor

Definition at line 37 of file MultilabelLabels.cpp.

CMultilabelLabels ( int32_t  num_classes)

constructor

Parameters
num_classesnumber of (binary) class assignments per label

Definition at line 44 of file MultilabelLabels.cpp.

CMultilabelLabels ( int32_t  num_labels,
int32_t  num_classes 
)

constructor

Parameters
num_labelsnumber of labels
num_classesnumber of (binary) class assignments per label

Definition at line 51 of file MultilabelLabels.cpp.

~CMultilabelLabels ( )

destructor

Definition at line 58 of file MultilabelLabels.cpp.

Member Function Documentation

void add_subset ( SGVector< index_t >  subset)
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)

Parameters
subsetsubset of indices to add

Definition at line 39 of file Labels.cpp.

void add_subset_in_place ( SGVector< index_t >  subset)
virtualinherited

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.

Parameters
subsetsubset of indices to replace the latest one with.

Definition at line 44 of file Labels.cpp.

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.

Parameters
dictdictionary of parameters to be built.

Definition at line 597 of file SGObject.cpp.

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.

Returns
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

Definition at line 714 of file SGObject.cpp.

CSGObject * deep_copy ( ) const
virtualinherited

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

Definition at line 198 of file SGObject.cpp.

void display ( ) const

print the current labeling

Definition at line 331 of file MultilabelLabels.cpp.

void ensure_valid ( const char *  context = NULL)
virtual

Make sure the label is valid, otherwise raise SG_ERROR.

possible with subset

Parameters
contextoptional message to convey the context

Implements CLabels.

Definition at line 94 of file MultilabelLabels.cpp.

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.

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

Definition at line 618 of file SGObject.cpp.

SGVector< int32_t > ** get_class_labels ( ) const

get list of sparse class labels (one vector per class)

Returns
list of sparse class labels

Definition at line 148 of file MultilabelLabels.cpp.

SGIO * get_global_io ( )
inherited

get the io object

Returns
io object

Definition at line 235 of file SGObject.cpp.

Parallel * get_global_parallel ( )
inherited

get the parallel object

Returns
parallel object

Definition at line 277 of file SGObject.cpp.

Version * get_global_version ( )
inherited

get the version object

Returns
version object

Definition at line 290 of file SGObject.cpp.

SGVector< int32_t > get_label ( int32_t  j)

get sparse assignment for j-th label

Returns
sparse label

Definition at line 225 of file MultilabelLabels.cpp.

virtual ELabelType get_label_type ( ) const
virtual

get label type

Returns
label type multiclass

Implements CLabels.

Definition at line 85 of file MultilabelLabels.h.

SGMatrix< int32_t > get_labels ( ) const

get label matrix, only for multiclass multiple output labels

Returns
label matrix

Definition at line 206 of file MultilabelLabels.cpp.

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

Definition at line 498 of file SGObject.cpp.

char * get_modsel_param_descr ( const char *  param_name)
inherited

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

Parameters
param_namename of the parameter
Returns
description of the parameter

Definition at line 522 of file SGObject.cpp.

index_t get_modsel_param_index ( const char *  param_name)
inherited

Returns index of model selection parameter with provided index

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

Definition at line 535 of file SGObject.cpp.

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

Implements CSGObject.

Definition at line 91 of file MultilabelLabels.h.

int32_t get_num_classes ( ) const
virtual

return number of classes (per label)

Returns
number of classes

Definition at line 131 of file MultilabelLabels.cpp.

int32_t get_num_labels ( ) const
virtual

get the number of stored labels

Returns
the number of labels

Implements CLabels.

Definition at line 124 of file MultilabelLabels.cpp.

float64_t get_value ( int32_t  idx)
virtualinherited

get confidence value for a particular label

Parameters
idxlabel index
Returns
confidence value of label with index idx

Definition at line 59 of file Labels.cpp.

SGVector< float64_t > get_values ( )
virtualinherited

get confidence vector

Returns
confidences

Definition at line 90 of file Labels.cpp.

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.

Parameters
genericset to the type of the generic if returning TRUE
Returns
TRUE if a class template.

Definition at line 296 of file SGObject.cpp.

bool load_serializable ( CSerializableFile *  file,
const char *  prefix = "" 
)
virtualinherited

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

Parameters
filewhere to load from
prefixprefix for members
Returns
TRUE if done, otherwise FALSE

Definition at line 369 of file SGObject.cpp.

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.

Exceptions
ShogunExceptionwill be thrown if an error occurs.

Reimplemented in CKernel, CWeightedDegreePositionStringKernel, CList, CAlphabet, CLinearHMM, CGaussianKernel, CInverseMultiQuadricKernel, CCircularKernel, and CExponentialKernel.

Definition at line 426 of file SGObject.cpp.

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.

Exceptions
ShogunExceptionwill be thrown if an error occurs.

Reimplemented in CDynamicArray< T >, CDynamicArray< float64_t >, CDynamicArray< float32_t >, CDynamicArray< int32_t >, CDynamicArray< char >, CDynamicArray< bool >, and CDynamicObjectArray.

Definition at line 421 of file SGObject.cpp.

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

Definition at line 262 of file SGObject.cpp.

void print_modsel_params ( )
inherited

prints all parameter registered for model selection and their type

Definition at line 474 of file SGObject.cpp.

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

prints registered parameters out

Parameters
prefixprefix for members

Definition at line 308 of file SGObject.cpp.

void remove_all_subsets ( )
virtualinherited

removes all subsets Calls subset_changed_post() afterwards

Definition at line 54 of file Labels.cpp.

void remove_subset ( )
virtualinherited

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

Definition at line 49 of file Labels.cpp.

bool save_serializable ( CSerializableFile *  file,
const char *  prefix = "" 
)
virtualinherited

Save this object to file.

Parameters
filewhere to save the object; will be closed during returning if PREFIX is an empty string.
prefixprefix for members
Returns
TRUE if done, otherwise FALSE

Definition at line 314 of file SGObject.cpp.

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.

Exceptions
ShogunExceptionwill be thrown if an error occurs.

Reimplemented in CKernel.

Definition at line 436 of file SGObject.cpp.

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.

Exceptions
ShogunExceptionwill be thrown if an error occurs.

Reimplemented in CKernel, CDynamicArray< T >, CDynamicArray< float64_t >, CDynamicArray< float32_t >, CDynamicArray< int32_t >, CDynamicArray< char >, CDynamicArray< bool >, and CDynamicObjectArray.

Definition at line 431 of file SGObject.cpp.

void set_class_labels ( SGVector< int32_t > **  labels_list)

assigning class labels

Definition at line 270 of file MultilabelLabels.cpp.

void set_generic ( )
inherited

Definition at line 41 of file SGObject.cpp.

void set_generic ( )
inherited

Definition at line 46 of file SGObject.cpp.

void set_generic ( )
inherited

Definition at line 51 of file SGObject.cpp.

void set_generic ( )
inherited

Definition at line 56 of file SGObject.cpp.

void set_generic ( )
inherited

Definition at line 61 of file SGObject.cpp.

void set_generic ( )
inherited

Definition at line 66 of file SGObject.cpp.

void set_generic ( )
inherited

Definition at line 71 of file SGObject.cpp.

void set_generic ( )
inherited

Definition at line 76 of file SGObject.cpp.

void set_generic ( )
inherited

Definition at line 81 of file SGObject.cpp.

void set_generic ( )
inherited

Definition at line 86 of file SGObject.cpp.

void set_generic ( )
inherited

Definition at line 91 of file SGObject.cpp.

void set_generic ( )
inherited

Definition at line 96 of file SGObject.cpp.

void set_generic ( )
inherited

Definition at line 101 of file SGObject.cpp.

void set_generic ( )
inherited

Definition at line 106 of file SGObject.cpp.

void set_generic ( )
inherited

Definition at line 111 of file SGObject.cpp.

void set_generic ( )
inherited

set generic type to T

void set_global_io ( SGIO *  io)
inherited

set the io object

Parameters
ioio object to use

Definition at line 228 of file SGObject.cpp.

void set_global_parallel ( Parallel *  parallel)
inherited

set the parallel object

Parameters
parallelparallel object to use

Definition at line 241 of file SGObject.cpp.

void set_global_version ( Version *  version)
inherited

set the version object

Parameters
versionversion object to use

Definition at line 283 of file SGObject.cpp.

void set_label ( int32_t  j,
SGVector< int32_t >  label 
)

set sparse assignment for j-th label

Parameters
jlabel index
labelsparse label

Definition at line 260 of file MultilabelLabels.cpp.

void set_labels ( SGVector< int32_t > *  labels)

set labels

Parameters
labelslist of sparse labels

Definition at line 138 of file MultilabelLabels.cpp.

void set_value ( float64_t  value,
int32_t  idx 
)
virtualinherited

set the confidence value for a particular label

Parameters
valuevalue to set
idxlabel index whose conf. value is to be changed

Definition at line 66 of file Labels.cpp.

void set_values ( SGVector< float64_t >  values)
virtualinherited

set confidence vector

Parameters
valuesto be set (should have zero length to disable values or length must match the number of labels)

Definition at line 78 of file Labels.cpp.

CSGObject * shallow_copy ( ) const
virtualinherited

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

Reimplemented in CGaussianKernel.

Definition at line 192 of file SGObject.cpp.

template SGVector< float64_t > to_dense< int32_t, float64_t > ( SGVector< S > *  sparse,
int32_t  dense_len,
D  d_true,
D  d_false 
)
static

Convert sparse label vector to dense. The dense vector will be {d_true; d_false}^dense_dim. Indices in sparse will be marked "d_true", everything else "d_false".

Parameters
sparsesparse vector to convert
dense_lendimension
d_truemarker for "true" labels
d_falsemarker for "false" labels
Returns
dense vector of dimension dense_len

Definition at line 236 of file MultilabelLabels.cpp.

void unset_generic ( )
inherited

unset generic type

this has to be called in classes specializing a template class

Definition at line 303 of file SGObject.cpp.

void update_parameter_hash ( )
virtualinherited

Updates the hash of current parameter combination

Definition at line 248 of file SGObject.cpp.

Member Data Documentation

SGIO* io
inherited

io

Definition at line 369 of file SGObject.h.

SGVector<float64_t> m_current_values
protectedinherited

current active value vector

Definition at line 135 of file Labels.h.

Parameter* m_gradient_parameters
inherited

parameters wrt which we can compute gradients

Definition at line 384 of file SGObject.h.

uint32_t m_hash
inherited

Hash of parameter values

Definition at line 387 of file SGObject.h.

SGVector<int32_t>* m_labels
protected

Labels themselves

Definition at line 170 of file MultilabelLabels.h.

Parameter* m_model_selection_parameters
inherited

model selection parameters

Definition at line 381 of file SGObject.h.

int32_t m_num_classes
protected

Number of classes

Definition at line 167 of file MultilabelLabels.h.

int32_t m_num_labels
protected

Number of labels

Definition at line 164 of file MultilabelLabels.h.

Parameter* m_parameters
inherited

parameters

Definition at line 378 of file SGObject.h.

CSubsetStack* m_subset_stack
protectedinherited

subset class to enable subset support for this class

Definition at line 132 of file Labels.h.

Parallel* parallel
inherited

parallel

Definition at line 372 of file SGObject.h.

Version* version
inherited

version

Definition at line 375 of file SGObject.h.

The documentation for this class was generated from the following files:
SHOGUN Machine Learning Toolbox - Documentation