SHOGUN  v3.2.0
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CFactor类 参考

详细描述

Class CFactor A factor is defined on a clique in the factor graph. Each factor can have its own data, either dense, sparse or shared data. Note that currently this class is table factor oriented.

在文件 Factor.h87 行定义.

类 CFactor 继承关系图:
Inheritance graph
[图例]

Public 成员函数

 CFactor ()
 
 CFactor (CTableFactorType *ftype, SGVector< int32_t > var_index, SGVector< float64_t > data)
 
 CFactor (CTableFactorType *ftype, SGVector< int32_t > var_index, SGSparseVector< float64_t > data_sparse)
 
 CFactor (CTableFactorType *ftype, SGVector< int32_t > var_index, CFactorDataSource *data_source)
 
virtual ~CFactor ()
 
virtual const char * get_name () const
 
CTableFactorTypeget_factor_type () const
 
void set_factor_type (CTableFactorType *ftype)
 
const SGVector< int32_t > get_variables () const
 
void set_variables (SGVector< int32_t > vars)
 
const SGVector< int32_t > get_cardinalities () const
 
SGVector< float64_tget_data () const
 
SGSparseVector< float64_tget_data_sparse () const
 
void set_data (SGVector< float64_t > data_dense)
 
void set_data_sparse (SGSparseVectorEntry< float64_t > *data_sparse, int32_t dlen)
 
bool is_data_dependent () const
 
bool is_data_sparse () const
 
SGVector< float64_tget_energies () const
 
float64_t get_energy (int32_t index) const
 
void set_energies (SGVector< float64_t > ft_energies)
 
void set_energy (int32_t ei, float64_t value)
 
float64_t evaluate_energy (const SGVector< int32_t > state) const
 
void compute_energies ()
 
void compute_gradients (const SGVector< float64_t > marginals, SGVector< float64_t > &parameter_gradient, double mult=1.0) const
 
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 bool update_parameter_hash ()
 
virtual bool equals (CSGObject *other, float64_t accuracy=0.0)
 
virtual CSGObjectclone ()
 

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 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

CTableFactorTypem_factor_type
 
SGVector< int32_t > m_var_index
 
SGVector< float64_tm_energies
 
CFactorDataSourcem_data_source
 
SGVector< float64_tm_data
 
SGSparseVector< float64_tm_data_sparse
 
bool m_is_data_dep
 

构造及析构函数说明

◆ CFactor() [1/4]

CFactor ( )

default constructor

在文件 Factor.cpp16 行定义.

◆ CFactor() [2/4]

CFactor ( CTableFactorType ftype,
SGVector< int32_t >  var_index,
SGVector< float64_t data 
)

Constructor

参数
ftypefactor type
var_indexindices of variables
datadense data, can be empty

在文件 Factor.cpp22 行定义.

◆ CFactor() [3/4]

CFactor ( CTableFactorType ftype,
SGVector< int32_t >  var_index,
SGSparseVector< float64_t data_sparse 
)

Constructor

参数
ftypefactor type
var_indexindices of variables
data_sparsesparse data, can be empty

在文件 Factor.cpp45 行定义.

◆ CFactor() [4/4]

CFactor ( CTableFactorType ftype,
SGVector< int32_t >  var_index,
CFactorDataSource data_source 
)

Constructor

参数
ftypefactor type
var_indexindices of variables
data_sourcecommon data for many factors

在文件 Factor.cpp68 行定义.

◆ ~CFactor()

~CFactor ( )
virtual

deconstructor

在文件 Factor.cpp89 行定义.

成员函数说明

◆ build_gradient_parameter_dictionary()

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.cpp1156 行定义.

◆ clone()

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.cpp1273 行定义.

◆ compute_energies()

void compute_energies ( )

Compute energy table

在文件 Factor.cpp205 行定义.

◆ compute_gradients()

void compute_gradients ( const SGVector< float64_t marginals,
SGVector< float64_t > &  parameter_gradient,
double  mult = 1.0 
) const

Compute parameter gradient from marginals and factor data

参数
marginalsmarginal distribution of the factor
parameter_gradientoutput gradients
multmultiplier

在文件 Factor.cpp224 行定义.

◆ deep_copy()

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.

◆ equals()

bool equals ( CSGObject other,
float64_t  accuracy = 0.0 
)
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)
返回
true if all parameters were equal, false if not

在文件 SGObject.cpp1177 行定义.

◆ evaluate_energy()

float64_t evaluate_energy ( const SGVector< int32_t >  state) const

evaluate energy for a given assignment

参数
statevariable assignments
返回
energy

在文件 Factor.cpp199 行定义.

◆ get_cardinalities()

const SGVector< int32_t > get_cardinalities ( ) const
返回
cardinalities of variables

在文件 Factor.cpp117 行定义.

◆ get_data()

SGVector< float64_t > get_data ( ) const
返回
dense factor data

在文件 Factor.cpp122 行定义.

◆ get_data_sparse()

SGSparseVector< float64_t > get_data_sparse ( ) const
返回
sparse factor data, note that call get_dense() to get SGVector

在文件 Factor.cpp130 行定义.

◆ get_energies()

SGVector< float64_t > get_energies ( ) const
返回
energy table which are in Matlab-linearized order: leftmost indices run by one.

在文件 Factor.cpp164 行定义.

◆ get_energy()

float64_t get_energy ( int32_t  index) const

get an entry in the energy table

参数
indexin the table
返回
energy value

在文件 Factor.cpp175 行定义.

◆ get_factor_type()

CTableFactorType * get_factor_type ( ) const
返回
factor type pointer

在文件 Factor.cpp95 行定义.

◆ get_global_io()

SGIO * get_global_io ( )
inherited

get the io object

返回
io object

在文件 SGObject.cpp174 行定义.

◆ get_global_parallel()

Parallel * get_global_parallel ( )
inherited

get the parallel object

返回
parallel object

在文件 SGObject.cpp209 行定义.

◆ get_global_version()

Version * get_global_version ( )
inherited

get the version object

返回
version object

在文件 SGObject.cpp222 行定义.

◆ get_modelsel_names()

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

在文件 SGObject.cpp1060 行定义.

◆ get_modsel_param_descr()

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.cpp1084 行定义.

◆ get_modsel_param_index()

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.cpp1097 行定义.

◆ get_name()

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

实现了 CSGObject.

在文件 Factor.h123 行定义.

◆ get_variables()

const SGVector< int32_t > get_variables ( ) const
返回
adjacent variables

在文件 Factor.cpp107 行定义.

◆ is_data_dependent()

bool is_data_dependent ( ) const
返回
whether this factor has data

在文件 Factor.cpp151 行定义.

◆ is_data_sparse()

bool is_data_sparse ( ) const
返回
whether data vector is sparse

在文件 Factor.cpp156 行定义.

◆ is_generic()

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.cpp228 行定义.

◆ load_all_file_parameters()

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.cpp633 行定义.

◆ load_file_parameters()

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.cpp474 行定义.

◆ load_serializable()

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.cpp305 行定义.

◆ load_serializable_post()

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.cpp989 行定义.

◆ load_serializable_pre()

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.cpp984 行定义.

◆ map_parameters()

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.cpp671 行定义.

◆ migrate()

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.cpp878 行定义.

◆ one_to_one_migration_prepare()

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.cpp818 行定义.

◆ print_modsel_params()

void print_modsel_params ( )
inherited

prints all parameter registered for model selection and their type

在文件 SGObject.cpp1036 行定义.

◆ print_serializable()

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

prints registered parameters out

参数
prefixprefix for members

在文件 SGObject.cpp240 行定义.

◆ save_serializable()

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.cpp246 行定义.

◆ save_serializable_post()

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.cpp999 行定义.

◆ save_serializable_pre()

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.cpp994 行定义.

◆ set_data()

void set_data ( SGVector< float64_t data_dense)

set dense data

参数
data_densedata vector

在文件 Factor.cpp138 行定义.

◆ set_data_sparse()

void set_data_sparse ( SGSparseVectorEntry< float64_t > *  data_sparse,
int32_t  dlen 
)

set sparse data

参数
data_sparsepointer to sparse entries
dlennumber of entries

在文件 Factor.cpp144 行定义.

◆ set_energies()

void set_energies ( SGVector< float64_t ft_energies)

set energies with new values

参数
ft_energiesnew energy table

在文件 Factor.cpp180 行定义.

◆ set_energy()

void set_energy ( int32_t  ei,
float64_t  value 
)

set energy for a particular state

参数
eiindex in the energy table
valueenergy value

在文件 Factor.cpp188 行定义.

◆ set_factor_type()

void set_factor_type ( CTableFactorType ftype)

set factor type

参数
ftypefactor type

在文件 Factor.cpp101 行定义.

◆ set_generic() [1/16]

void set_generic ( )
inherited

在文件 SGObject.cpp41 行定义.

◆ set_generic() [2/16]

void set_generic ( )
inherited

在文件 SGObject.cpp46 行定义.

◆ set_generic() [3/16]

void set_generic ( )
inherited

在文件 SGObject.cpp51 行定义.

◆ set_generic() [4/16]

void set_generic ( )
inherited

在文件 SGObject.cpp56 行定义.

◆ set_generic() [5/16]

void set_generic ( )
inherited

在文件 SGObject.cpp61 行定义.

◆ set_generic() [6/16]

void set_generic ( )
inherited

在文件 SGObject.cpp66 行定义.

◆ set_generic() [7/16]

void set_generic ( )
inherited

在文件 SGObject.cpp71 行定义.

◆ set_generic() [8/16]

void set_generic ( )
inherited

在文件 SGObject.cpp76 行定义.

◆ set_generic() [9/16]

void set_generic ( )
inherited

在文件 SGObject.cpp81 行定义.

◆ set_generic() [10/16]

void set_generic ( )
inherited

在文件 SGObject.cpp86 行定义.

◆ set_generic() [11/16]

void set_generic ( )
inherited

在文件 SGObject.cpp91 行定义.

◆ set_generic() [12/16]

void set_generic ( )
inherited

在文件 SGObject.cpp96 行定义.

◆ set_generic() [13/16]

void set_generic ( )
inherited

在文件 SGObject.cpp101 行定义.

◆ set_generic() [14/16]

void set_generic ( )
inherited

在文件 SGObject.cpp106 行定义.

◆ set_generic() [15/16]

void set_generic ( )
inherited

在文件 SGObject.cpp111 行定义.

◆ set_generic() [16/16]

void set_generic ( )
inherited

set generic type to T

◆ set_global_io()

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.

◆ set_global_parallel()

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.

◆ set_global_version()

void set_global_version ( Version version)
inherited

set the version object

参数
versionversion object to use

在文件 SGObject.cpp215 行定义.

◆ set_variables()

void set_variables ( SGVector< int32_t >  vars)

set variables

参数
varsindices of variables

在文件 Factor.cpp112 行定义.

◆ shallow_copy()

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.

◆ unset_generic()

void unset_generic ( )
inherited

unset generic type

this has to be called in classes specializing a template class

在文件 SGObject.cpp235 行定义.

◆ update_parameter_hash()

bool update_parameter_hash ( )
virtualinherited

Updates the hash of current parameter combination.

返回
bool if parameter combination has changed since last update.

在文件 SGObject.cpp187 行定义.

类成员变量说明

◆ io

SGIO* io
inherited

io

在文件 SGObject.h473 行定义.

◆ m_data

SGVector<float64_t> m_data
protected

dense data

在文件 Factor.h225 行定义.

◆ m_data_source

CFactorDataSource* m_data_source
protected

shared data

在文件 Factor.h222 行定义.

◆ m_data_sparse

SGSparseVector<float64_t> m_data_sparse
protected

sparse data

在文件 Factor.h228 行定义.

◆ m_energies

SGVector<float64_t> m_energies
protected

energy table

在文件 Factor.h219 行定义.

◆ m_factor_type

CTableFactorType* m_factor_type
protected

factor type

在文件 Factor.h213 行定义.

◆ m_gradient_parameters

Parameter* m_gradient_parameters
inherited

parameters wrt which we can compute gradients

在文件 SGObject.h488 行定义.

◆ m_hash

uint32_t m_hash
inherited

Hash of parameter values

在文件 SGObject.h494 行定义.

◆ m_is_data_dep

bool m_is_data_dep
protected

whether the factor is data dependent

在文件 Factor.h231 行定义.

◆ m_model_selection_parameters

Parameter* m_model_selection_parameters
inherited

model selection parameters

在文件 SGObject.h485 行定义.

◆ m_parameter_map

ParameterMap* m_parameter_map
inherited

map for different parameter versions

在文件 SGObject.h491 行定义.

◆ m_parameters

Parameter* m_parameters
inherited

parameters

在文件 SGObject.h482 行定义.

◆ m_var_index

SGVector<int32_t> m_var_index
protected

variable indices

在文件 Factor.h216 行定义.

◆ parallel

Parallel* parallel
inherited

parallel

在文件 SGObject.h476 行定义.

◆ version

Version* version
inherited

version

在文件 SGObject.h479 行定义.


该类的文档由以下文件生成:

SHOGUN Machine Learning Toolbox - Documentation