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CMulticlassStrategy类 参考abstract

详细描述

class MulticlassStrategy used to construct generic multiclass classifiers with ensembles of binary classifiers

在文件 MulticlassStrategy.h 第 49 行定义.

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

Public 成员函数

 CMulticlassStrategy ()
 
 CMulticlassStrategy (EProbHeuristicType prob_heuris)
 
virtual ~CMulticlassStrategy ()
 
virtual const char * get_name () const
 
void set_num_classes (int32_t num_classes)
 
int32_t get_num_classes () const
 
CRejectionStrategy * get_rejection_strategy ()
 
void set_rejection_strategy (CRejectionStrategy *rejection_strategy)
 
virtual void train_start (CMulticlassLabels *orig_labels, CBinaryLabels *train_labels)
 
virtual bool train_has_more ()=0
 
virtual SGVector< int32_t > train_prepare_next ()
 
virtual void train_stop ()
 
virtual int32_t decide_label (SGVector< float64_t > outputs)=0
 
virtual SGVector< index_t > decide_label_multiple_output (SGVector< float64_t > outputs, int32_t n_outputs)
 
virtual int32_t get_num_machines ()=0
 
EProbHeuristicType get_prob_heuris_type ()
 
void set_prob_heuris_type (EProbHeuristicType prob_heuris)
 
virtual void rescale_outputs (SGVector< float64_t > outputs)
 
virtual void rescale_outputs (SGVector< float64_t > outputs, const SGVector< float64_t > As, const SGVector< float64_t > Bs)
 
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 ()
 

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 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

CRejectionStrategy * m_rejection_strategy
 rejection strategy 更多...
 
CBinaryLabels * m_train_labels
 labels used to train the submachines 更多...
 
CMulticlassLabels * m_orig_labels
 original multiclass labels 更多...
 
int32_t m_train_iter
 index of current iterations 更多...
 
int32_t m_num_classes
 number of classes in this problem 更多...
 
EProbHeuristicType m_prob_heuris
 prob output heuristic 更多...
 

构造及析构函数说明

CMulticlassStrategy ( )

constructor

在文件 MulticlassStrategy.cpp 第 18 行定义.

CMulticlassStrategy ( EProbHeuristicType  prob_heuris)

constructor

参数
prob_heurisprobability estimation heuristic

在文件 MulticlassStrategy.cpp 第 24 行定义.

virtual ~CMulticlassStrategy ( )
virtual

destructor

在文件 MulticlassStrategy.h 第 61 行定义.

成员函数说明

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.cpp 第 597 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.cpp 第 714 行定义.

virtual int32_t decide_label ( SGVector< float64_t >  outputs)
pure virtual

decide the final label.

参数
outputsa vector of output from each machine (in that order)

在 CMulticlassOneVsRestStrategy, CECOCStrategy , 以及 CMulticlassOneVsOneStrategy 内被实现.

virtual SGVector<index_t> decide_label_multiple_output ( SGVector< float64_t >  outputs,
int32_t  n_outputs 
)
virtual

decide the final label.

参数
outputsa vector of output from each machine (in that order)
n_outputsnumber of outputs

被 CMulticlassOneVsRestStrategy 重载.

在文件 MulticlassStrategy.h 第 119 行定义.

CSGObject * deep_copy ( ) const
virtualinherited

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

在文件 SGObject.cpp 第 198 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.cpp 第 618 行定义.

SGIO * get_global_io ( )
inherited

get the io object

返回
io object

在文件 SGObject.cpp 第 235 行定义.

Parallel * get_global_parallel ( )
inherited

get the parallel object

返回
parallel object

在文件 SGObject.cpp 第 277 行定义.

Version * get_global_version ( )
inherited

get the version object

返回
version object

在文件 SGObject.cpp 第 290 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.cpp 第 498 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.cpp 第 522 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.cpp 第 535 行定义.

virtual const char* get_name ( ) const
virtual

get name

实现了 CSGObject.

被 CMulticlassOneVsRestStrategy, CMulticlassOneVsOneStrategy , 以及 CECOCStrategy 重载.

在文件 MulticlassStrategy.h 第 64 行定义.

int32_t get_num_classes ( ) const

get number of classes

在文件 MulticlassStrategy.h 第 76 行定义.

virtual int32_t get_num_machines ( )
pure virtual

get number of machines used in this strategy.

在 CMulticlassOneVsRestStrategy, CECOCStrategy , 以及 CMulticlassOneVsOneStrategy 内被实现.

EProbHeuristicType get_prob_heuris_type ( )

get prob output heuristic type

在文件 MulticlassStrategy.h 第 130 行定义.

CRejectionStrategy* get_rejection_strategy ( )

get rejection strategy

在文件 MulticlassStrategy.h 第 82 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.cpp 第 296 行定义.

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!

参数
filewhere to load from
prefixprefix for members
返回
TRUE if done, otherwise FALSE

在文件 SGObject.cpp 第 369 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 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.

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 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.

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

在文件 SGObject.cpp 第 262 行定义.

void print_modsel_params ( )
inherited

prints all parameter registered for model selection and their type

在文件 SGObject.cpp 第 474 行定义.

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

prints registered parameters out

参数
prefixprefix for members

在文件 SGObject.cpp 第 308 行定义.

virtual void rescale_outputs ( SGVector< float64_t >  outputs)
virtual

rescale multiclass outputs according to the selected heuristic NOTE: no matter OVA or OVO, only num_classes rescaled outputs will be returned as the posteriors

参数
outputsa vector of output from each machine (in that order)

被 CMulticlassOneVsRestStrategy , 以及 CMulticlassOneVsOneStrategy 重载.

在文件 MulticlassStrategy.h 第 148 行定义.

virtual void rescale_outputs ( SGVector< float64_t >  outputs,
const SGVector< float64_t >  As,
const SGVector< float64_t >  Bs 
)
virtual

rescale multiclass outputs according to the selected heuristic this function only being called with OVA_SOFTMAX heuristic the CStatistics::fit_sigmoid() should be called first

参数
outputsa vector of output from each machine (in that order)
Asfitted sigmoid parameters a one for each machine
Bsfitted sigmoid parameters b one for each machine

被 CMulticlassOneVsRestStrategy 重载.

在文件 MulticlassStrategy.h 第 160 行定义.

bool save_serializable ( CSerializableFile *  file,
const char *  prefix = "" 
)
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
返回
TRUE if done, otherwise FALSE

在文件 SGObject.cpp 第 314 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 occurs.

被 CKernel 重载.

在文件 SGObject.cpp 第 436 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 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.

void set_generic ( )
inherited

在文件 SGObject.cpp 第 41 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp 第 46 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp 第 51 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp 第 56 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp 第 61 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp 第 66 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp 第 71 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp 第 76 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp 第 81 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp 第 86 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp 第 91 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp 第 96 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp 第 101 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp 第 106 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp 第 111 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.cpp 第 228 行定义.

void set_global_parallel ( Parallel *  parallel)
inherited

set the parallel object

参数
parallelparallel object to use

在文件 SGObject.cpp 第 241 行定义.

void set_global_version ( Version *  version)
inherited

set the version object

参数
versionversion object to use

在文件 SGObject.cpp 第 283 行定义.

void set_num_classes ( int32_t  num_classes)

set number of classes

在文件 MulticlassStrategy.h 第 70 行定义.

void set_prob_heuris_type ( EProbHeuristicType  prob_heuris)

set prob output heuristic type

参数
prob_heuristype of probability heuristic

在文件 MulticlassStrategy.h 第 138 行定义.

void set_rejection_strategy ( CRejectionStrategy *  rejection_strategy)

set rejection strategy

在文件 MulticlassStrategy.h 第 89 行定义.

CSGObject * shallow_copy ( ) const
virtualinherited

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.

virtual bool train_has_more ( )
pure virtual

has more training phase

在 CMulticlassOneVsRestStrategy, CECOCStrategy , 以及 CMulticlassOneVsOneStrategy 内被实现.

SGVector< int32_t > train_prepare_next ( )
virtual

prepare for the next training phase.

返回
The subset that should be applied. Return NULL when no subset is needed.

被 CMulticlassOneVsRestStrategy, CECOCStrategy , 以及 CMulticlassOneVsOneStrategy 重载.

在文件 MulticlassStrategy.cpp 第 57 行定义.

void train_start ( CMulticlassLabels *  orig_labels,
CBinaryLabels *  train_labels 
)
virtual

start training

被 CMulticlassOneVsRestStrategy, CECOCStrategy , 以及 CMulticlassOneVsOneStrategy 重载.

在文件 MulticlassStrategy.cpp 第 46 行定义.

void train_stop ( )
virtual

finish training, release resources

在文件 MulticlassStrategy.cpp 第 63 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.cpp 第 303 行定义.

void update_parameter_hash ( )
virtualinherited

Updates the hash of current parameter combination

在文件 SGObject.cpp 第 248 行定义.

类成员变量说明

SGIO* io
inherited

io

在文件 SGObject.h 第 369 行定义.

Parameter* m_gradient_parameters
inherited

parameters wrt which we can compute gradients

在文件 SGObject.h 第 384 行定义.

uint32_t m_hash
inherited

Hash of parameter values

在文件 SGObject.h 第 387 行定义.

Parameter* m_model_selection_parameters
inherited

model selection parameters

在文件 SGObject.h 第 381 行定义.

int32_t m_num_classes
protected

number of classes in this problem

在文件 MulticlassStrategy.h 第 176 行定义.

CMulticlassLabels* m_orig_labels
protected

original multiclass labels

在文件 MulticlassStrategy.h 第 174 行定义.

Parameter* m_parameters
inherited

parameters

在文件 SGObject.h 第 378 行定义.

EProbHeuristicType m_prob_heuris
protected

prob output heuristic

在文件 MulticlassStrategy.h 第 177 行定义.

CRejectionStrategy* m_rejection_strategy
protected

rejection strategy

在文件 MulticlassStrategy.h 第 172 行定义.

int32_t m_train_iter
protected

index of current iterations

在文件 MulticlassStrategy.h 第 175 行定义.

CBinaryLabels* m_train_labels
protected

labels used to train the submachines

在文件 MulticlassStrategy.h 第 173 行定义.

Parallel* parallel
inherited

parallel

在文件 SGObject.h 第 372 行定义.

Version* version
inherited

version

在文件 SGObject.h 第 375 行定义.

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