SHOGUN  6.1.3
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CLibLinear Class Reference

Detailed Description

This class provides an interface to the LibLinear library for large- scale linear learning focusing on SVM [1]. This is the classification interface. For regression, see CLibLinearRegression. There is also an online version, see COnlineLibLinear.

LIBLINEAR is a linear SVM solver for data with millions of instances and features. It supports (for classification)

See the LIBLINEAR_SOLVER_TYPE enum for types of solvers.

[1] http://www.csie.ntu.edu.tw/~cjlin/liblinear/

Definition at line 61 of file LibLinear.h.

Inheritance diagram for CLibLinear:
[legend]

Public Types

typedef rxcpp::subjects::subject< ObservedValueSGSubject
 
typedef rxcpp::observable< ObservedValue, rxcpp::dynamic_observable< ObservedValue > > SGObservable
 
typedef rxcpp::subscriber< ObservedValue, rxcpp::observer< ObservedValue, void, void, void, void > > SGSubscriber
 

Public Member Functions

 CLibLinear ()
 
 CLibLinear (LIBLINEAR_SOLVER_TYPE liblinear_solver_type)
 
 CLibLinear (float64_t C, CDotFeatures *traindat, CLabels *trainlab)
 
virtual ~CLibLinear ()
 
LIBLINEAR_SOLVER_TYPE get_liblinear_solver_type ()
 
void set_liblinear_solver_type (LIBLINEAR_SOLVER_TYPE st)
 
virtual EMachineType get_classifier_type ()
 
void set_C (float64_t c_neg, float64_t c_pos)
 
float64_t get_C1 ()
 
float64_t get_C2 ()
 
void set_epsilon (float64_t eps)
 
float64_t get_epsilon ()
 
void set_bias_enabled (bool enable_bias)
 
bool get_bias_enabled ()
 
virtual const char * get_name () const
 
int32_t get_max_iterations ()
 
void set_max_iterations (int32_t max_iter=1000)
 
void set_linear_term (const SGVector< float64_t > linear_term)
 
SGVector< float64_tget_linear_term ()
 
void init_linear_term ()
 
virtual bool train (CFeatures *data=NULL)
 
virtual SGVector< float64_tget_w () const
 
virtual void set_w (const SGVector< float64_t > src_w)
 
virtual void set_bias (float64_t b)
 
virtual float64_t get_bias ()
 
virtual void set_compute_bias (bool compute_bias)
 
virtual bool get_compute_bias ()
 
virtual void set_features (CDotFeatures *feat)
 
virtual CBinaryLabelsapply_binary (CFeatures *data=NULL)
 
virtual CRegressionLabelsapply_regression (CFeatures *data=NULL)
 
virtual float64_t apply_one (int32_t vec_idx)
 
virtual CDotFeaturesget_features ()
 
virtual CLabelsapply (CFeatures *data=NULL)
 
virtual CMulticlassLabelsapply_multiclass (CFeatures *data=NULL)
 
virtual CStructuredLabelsapply_structured (CFeatures *data=NULL)
 
virtual CLatentLabelsapply_latent (CFeatures *data=NULL)
 
virtual void set_labels (CLabels *lab)
 
virtual CLabelsget_labels ()
 
void set_max_train_time (float64_t t)
 
float64_t get_max_train_time ()
 
void set_solver_type (ESolverType st)
 
ESolverType get_solver_type ()
 
virtual void set_store_model_features (bool store_model)
 
virtual bool train_locked (SGVector< index_t > indices)
 
virtual CLabelsapply_locked (SGVector< index_t > indices)
 
virtual CBinaryLabelsapply_locked_binary (SGVector< index_t > indices)
 
virtual CRegressionLabelsapply_locked_regression (SGVector< index_t > indices)
 
virtual CMulticlassLabelsapply_locked_multiclass (SGVector< index_t > indices)
 
virtual CStructuredLabelsapply_locked_structured (SGVector< index_t > indices)
 
virtual CLatentLabelsapply_locked_latent (SGVector< index_t > indices)
 
virtual void data_lock (CLabels *labs, CFeatures *features)
 
virtual void post_lock (CLabels *labs, CFeatures *features)
 
virtual void data_unlock ()
 
virtual bool supports_locking () const
 
bool is_data_locked () const
 
virtual EProblemType get_machine_problem_type () const
 
SG_FORCED_INLINE bool cancel_computation () const
 
SG_FORCED_INLINE void pause_computation ()
 
SG_FORCED_INLINE void resume_computation ()
 
int32_t ref ()
 
int32_t ref_count ()
 
int32_t unref ()
 
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="")
 
virtual bool load_serializable (CSerializableFile *file, const char *prefix="")
 
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)
 
bool has (const std::string &name) const
 
template<typename T >
bool has (const Tag< T > &tag) const
 
template<typename T , typename U = void>
bool has (const std::string &name) const
 
template<typename T >
void set (const Tag< T > &_tag, const T &value)
 
template<typename T , typename U = void>
void set (const std::string &name, const T &value)
 
template<typename T >
get (const Tag< T > &_tag) const
 
template<typename T , typename U = void>
get (const std::string &name) const
 
SGObservableget_parameters_observable ()
 
void subscribe_to_parameters (ParameterObserverInterface *obs)
 
void list_observable_parameters ()
 
virtual void update_parameter_hash ()
 
virtual bool parameter_hash_changed ()
 
virtual bool equals (CSGObject *other, float64_t accuracy=0.0, bool tolerant=false)
 
virtual CSGObjectclone ()
 

Public Attributes

SGIOio
 
Parallelparallel
 
Versionversion
 
Parameterm_parameters
 
Parameterm_model_selection_parameters
 
Parameterm_gradient_parameters
 
uint32_t m_hash
 

Protected Member Functions

virtual bool train_machine (CFeatures *data=NULL)
 
virtual SGVector< float64_tapply_get_outputs (CFeatures *data)
 
virtual void store_model_features ()
 
void compute_bias (CFeatures *data)
 
virtual bool is_label_valid (CLabels *lab) const
 
virtual bool train_require_labels () const
 
rxcpp::subscription connect_to_signal_handler ()
 
void reset_computation_variables ()
 
virtual void on_next ()
 
virtual void on_pause ()
 
virtual void on_complete ()
 
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)
 
template<typename T >
void register_param (Tag< T > &_tag, const T &value)
 
template<typename T >
void register_param (const std::string &name, const T &value)
 
bool clone_parameters (CSGObject *other)
 
void observe (const ObservedValue value)
 
void register_observable_param (const std::string &name, const SG_OBS_VALUE_TYPE type, const std::string &description)
 

Protected Attributes

float64_t C1
 
float64_t C2
 
bool use_bias
 
float64_t epsilon
 
int32_t max_iterations
 
SGVector< float64_tm_linear_term
 
LIBLINEAR_SOLVER_TYPE liblinear_solver_type
 
float64_t bias
 
CDotFeaturesfeatures
 
bool m_compute_bias
 
float64_t m_max_train_time
 
CLabelsm_labels
 
ESolverType m_solver_type
 
bool m_store_model_features
 
bool m_data_locked
 
std::atomic< bool > m_cancel_computation
 
std::atomic< bool > m_pause_computation_flag
 
std::condition_variable m_pause_computation
 
std::mutex m_mutex
 

Member Typedef Documentation

◆ SGObservable

Definition at line 130 of file SGObject.h.

◆ SGSubject

Definition at line 127 of file SGObject.h.

◆ SGSubscriber

typedef rxcpp::subscriber< ObservedValue, rxcpp::observer<ObservedValue, void, void, void, void> > SGSubscriber
inherited

Definition at line 133 of file SGObject.h.

Constructor & Destructor Documentation

◆ CLibLinear() [1/3]

default constructor

Definition at line 25 of file LibLinear.cpp.

◆ CLibLinear() [2/3]

CLibLinear ( LIBLINEAR_SOLVER_TYPE  liblinear_solver_type)

constructor

Parameters
liblinear_solver_typeliblinear_solver_type

Definition at line 31 of file LibLinear.cpp.

◆ CLibLinear() [3/3]

CLibLinear ( float64_t  C,
CDotFeatures traindat,
CLabels trainlab 
)

constructor (using L2R_L1LOSS_SVC_DUAL as default)

Parameters
Cconstant C
traindattraining features
trainlabtraining labels

Definition at line 38 of file LibLinear.cpp.

◆ ~CLibLinear()

~CLibLinear ( )
virtual

destructor

Definition at line 75 of file LibLinear.cpp.

Member Function Documentation

◆ apply()

CLabels * apply ( CFeatures data = NULL)
virtualinherited

apply machine to data if data is not specified apply to the current features

Parameters
data(test)data to be classified
Returns
classified labels

Definition at line 159 of file Machine.cpp.

◆ apply_binary()

CBinaryLabels * apply_binary ( CFeatures data = NULL)
virtualinherited

apply linear machine to data for binary classification problem

Parameters
data(test)data to be classified
Returns
classified labels

Reimplemented from CMachine.

Reimplemented in CDomainAdaptationSVMLinear.

Definition at line 70 of file LinearMachine.cpp.

◆ apply_get_outputs()

SGVector< float64_t > apply_get_outputs ( CFeatures data)
protectedvirtualinherited

apply get outputs

Parameters
datafeatures to compute outputs
Returns
outputs

Definition at line 76 of file LinearMachine.cpp.

◆ apply_latent()

CLatentLabels * apply_latent ( CFeatures data = NULL)
virtualinherited

apply machine to data in means of latent problem

Reimplemented in CLinearLatentMachine.

Definition at line 239 of file Machine.cpp.

◆ apply_locked()

CLabels * apply_locked ( SGVector< index_t indices)
virtualinherited

Applies a locked machine on a set of indices. Error if machine is not locked

Parameters
indicesindex vector (of locked features) that is predicted

Definition at line 194 of file Machine.cpp.

◆ apply_locked_binary()

CBinaryLabels * apply_locked_binary ( SGVector< index_t indices)
virtualinherited

applies a locked machine on a set of indices for binary problems

Reimplemented in CKernelMachine.

Definition at line 245 of file Machine.cpp.

◆ apply_locked_latent()

CLatentLabels * apply_locked_latent ( SGVector< index_t indices)
virtualinherited

applies a locked machine on a set of indices for latent problems

Definition at line 273 of file Machine.cpp.

◆ apply_locked_multiclass()

CMulticlassLabels * apply_locked_multiclass ( SGVector< index_t indices)
virtualinherited

applies a locked machine on a set of indices for multiclass problems

Definition at line 259 of file Machine.cpp.

◆ apply_locked_regression()

CRegressionLabels * apply_locked_regression ( SGVector< index_t indices)
virtualinherited

applies a locked machine on a set of indices for regression problems

Reimplemented in CKernelMachine.

Definition at line 252 of file Machine.cpp.

◆ apply_locked_structured()

CStructuredLabels * apply_locked_structured ( SGVector< index_t indices)
virtualinherited

applies a locked machine on a set of indices for structured problems

Definition at line 266 of file Machine.cpp.

◆ apply_multiclass()

CMulticlassLabels * apply_multiclass ( CFeatures data = NULL)
virtualinherited

◆ apply_one()

float64_t apply_one ( int32_t  vec_idx)
virtualinherited

applies to one vector

Reimplemented from CMachine.

Definition at line 59 of file LinearMachine.cpp.

◆ apply_regression()

CRegressionLabels * apply_regression ( CFeatures data = NULL)
virtualinherited

apply linear machine to data for regression problem

Parameters
data(test)data to be classified
Returns
classified labels

Reimplemented from CMachine.

Definition at line 64 of file LinearMachine.cpp.

◆ apply_structured()

CStructuredLabels * apply_structured ( CFeatures data = NULL)
virtualinherited

apply machine to data in means of SO classification problem

Reimplemented in CLinearStructuredOutputMachine.

Definition at line 233 of file Machine.cpp.

◆ 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.

Parameters
dictdictionary of parameters to be built.

Definition at line 635 of file SGObject.cpp.

◆ cancel_computation()

SG_FORCED_INLINE bool cancel_computation ( ) const
inherited
Returns
whether the algorithm needs to be stopped

Definition at line 319 of file Machine.h.

◆ 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.

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

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

Definition at line 734 of file SGObject.cpp.

◆ clone_parameters()

bool clone_parameters ( CSGObject other)
protectedinherited

Definition at line 759 of file SGObject.cpp.

◆ compute_bias()

void compute_bias ( CFeatures data)
protectedinherited

Computes the added bias. The bias is computed as the mean error between the predictions and the true labels.

Definition at line 145 of file LinearMachine.cpp.

◆ connect_to_signal_handler()

rxcpp::subscription connect_to_signal_handler ( )
protectedinherited

connect the machine instance to the signal handler

Definition at line 280 of file Machine.cpp.

◆ data_lock()

void data_lock ( CLabels labs,
CFeatures features 
)
virtualinherited

Locks the machine on given labels and data. After this call, only train_locked and apply_locked may be called

Only possible if supports_locking() returns true

Parameters
labslabels used for locking
featuresfeatures used for locking

Reimplemented in CKernelMachine.

Definition at line 119 of file Machine.cpp.

◆ data_unlock()

void data_unlock ( )
virtualinherited

Unlocks a locked machine and restores previous state

Reimplemented in CKernelMachine.

Definition at line 150 of file Machine.cpp.

◆ deep_copy()

CSGObject * deep_copy ( ) const
virtualinherited

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

Definition at line 232 of file SGObject.cpp.

◆ equals()

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 656 of file SGObject.cpp.

◆ get() [1/2]

T get ( const Tag< T > &  _tag) const
inherited

Getter for a class parameter, identified by a Tag. Throws an exception if the class does not have such a parameter.

Parameters
_tagname and type information of parameter
Returns
value of the parameter identified by the input tag

Definition at line 381 of file SGObject.h.

◆ get() [2/2]

T get ( const std::string &  name) const
inherited

Getter for a class parameter, identified by a name. Throws an exception if the class does not have such a parameter.

Parameters
namename of the parameter
Returns
value of the parameter corresponding to the input name and type

Definition at line 404 of file SGObject.h.

◆ get_bias()

float64_t get_bias ( )
virtualinherited

get bias

Returns
bias

Definition at line 113 of file LinearMachine.cpp.

◆ get_bias_enabled()

bool get_bias_enabled ( )

check if bias is enabled

Returns
if bias is enabled

Definition at line 152 of file LibLinear.h.

◆ get_C1()

float64_t get_C1 ( )

get C1

Returns
C1

Definition at line 122 of file LibLinear.h.

◆ get_C2()

float64_t get_C2 ( )

get C2

Returns
C2

Definition at line 128 of file LibLinear.h.

◆ get_classifier_type()

virtual EMachineType get_classifier_type ( )
virtual

get classifier type

Returns
the classifier type

Reimplemented from CMachine.

Reimplemented in CDomainAdaptationSVMLinear.

Definition at line 109 of file LibLinear.h.

◆ get_compute_bias()

bool get_compute_bias ( )
virtualinherited

Get compute bias

Returns
compute_bias

Definition at line 123 of file LinearMachine.cpp.

◆ get_epsilon()

float64_t get_epsilon ( )

get epsilon

Returns
epsilon

Definition at line 140 of file LibLinear.h.

◆ get_features()

CDotFeatures * get_features ( )
virtualinherited

get features

Returns
features

Definition at line 135 of file LinearMachine.cpp.

◆ get_global_io()

SGIO * get_global_io ( )
inherited

get the io object

Returns
io object

Definition at line 269 of file SGObject.cpp.

◆ get_global_parallel()

Parallel * get_global_parallel ( )
inherited

get the parallel object

Returns
parallel object

Definition at line 311 of file SGObject.cpp.

◆ get_global_version()

Version * get_global_version ( )
inherited

get the version object

Returns
version object

Definition at line 324 of file SGObject.cpp.

◆ get_labels()

CLabels * get_labels ( )
virtualinherited

get labels

Returns
labels

Definition at line 83 of file Machine.cpp.

◆ get_liblinear_solver_type()

LIBLINEAR_SOLVER_TYPE get_liblinear_solver_type ( )
Returns
the currently used liblinear solver

Definition at line 91 of file LibLinear.h.

◆ get_linear_term()

SGVector< float64_t > get_linear_term ( )

get the linear term for qp

Definition at line 1366 of file LibLinear.cpp.

◆ get_machine_problem_type()

virtual EProblemType get_machine_problem_type ( ) const
virtualinherited

returns type of problem machine solves

Reimplemented in CNeuralNetwork, CRandomForest, CCHAIDTree, CCARTree, and CBaseMulticlassMachine.

Definition at line 311 of file Machine.h.

◆ get_max_iterations()

int32_t get_max_iterations ( )

get the maximum number of iterations liblinear is allowed to do

Definition at line 158 of file LibLinear.h.

◆ get_max_train_time()

float64_t get_max_train_time ( )
inherited

get maximum training time

Returns
maximum training time

Definition at line 94 of file Machine.cpp.

◆ get_modelsel_names()

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

Definition at line 536 of file SGObject.cpp.

◆ 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

Parameters
param_namename of the parameter
Returns
description of the parameter

Definition at line 560 of file SGObject.cpp.

◆ get_modsel_param_index()

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 573 of file SGObject.cpp.

◆ get_name()

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

Reimplemented from CLinearMachine.

Reimplemented in CDomainAdaptationSVMLinear.

Definition at line 155 of file LibLinear.h.

◆ get_parameters_observable()

SGObservable* get_parameters_observable ( )
inherited

Get parameters observable

Returns
RxCpp observable

Definition at line 415 of file SGObject.h.

◆ get_solver_type()

ESolverType get_solver_type ( )
inherited

get solver type

Returns
solver

Definition at line 109 of file Machine.cpp.

◆ get_w()

SGVector< float64_t > get_w ( ) const
virtualinherited

get w

Returns
weight vector

Definition at line 98 of file LinearMachine.cpp.

◆ has() [1/3]

bool has ( const std::string &  name) const
inherited

Checks if object has a class parameter identified by a name.

Parameters
namename of the parameter
Returns
true if the parameter exists with the input name

Definition at line 304 of file SGObject.h.

◆ has() [2/3]

bool has ( const Tag< T > &  tag) const
inherited

Checks if object has a class parameter identified by a Tag.

Parameters
tagtag of the parameter containing name and type information
Returns
true if the parameter exists with the input tag

Definition at line 315 of file SGObject.h.

◆ has() [3/3]

bool has ( const std::string &  name) const
inherited

Checks if a type exists for a class parameter identified by a name.

Parameters
namename of the parameter
Returns
true if the parameter exists with the input name and type

Definition at line 326 of file SGObject.h.

◆ init_linear_term()

void init_linear_term ( )

set the linear term for qp

Definition at line 1374 of file LibLinear.cpp.

◆ is_data_locked()

bool is_data_locked ( ) const
inherited
Returns
whether this machine is locked

Definition at line 308 of file Machine.h.

◆ 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.

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

Definition at line 330 of file SGObject.cpp.

◆ is_label_valid()

virtual bool is_label_valid ( CLabels lab) const
protectedvirtualinherited

check whether the labels is valid.

Subclasses can override this to implement their check of label types.

Parameters
labthe labels being checked, guaranteed to be non-NULL

Reimplemented in CNeuralNetwork, CCARTree, CCHAIDTree, CGaussianProcessRegression, and CBaseMulticlassMachine.

Definition at line 391 of file Machine.h.

◆ list_observable_parameters()

void list_observable_parameters ( )
inherited

Print to stdout a list of observable parameters

Definition at line 878 of file SGObject.cpp.

◆ load_serializable()

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 403 of file SGObject.cpp.

◆ 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.

Exceptions
ShogunExceptionwill be thrown if an error occurs.

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

Definition at line 460 of file SGObject.cpp.

◆ 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.

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 455 of file SGObject.cpp.

◆ observe()

void observe ( const ObservedValue  value)
protectedinherited

Observe a parameter value and emit them to observer.

Parameters
valueObserved parameter's value

Definition at line 828 of file SGObject.cpp.

◆ on_complete()

virtual void on_complete ( )
protectedvirtualinherited

The action which will be done when the user decides to return to prompt and terminate the program execution

Definition at line 427 of file Machine.h.

◆ on_next()

virtual void on_next ( )
protectedvirtualinherited

The action which will be done when the user decides to premature stop the CMachine execution

Definition at line 411 of file Machine.h.

◆ on_pause()

virtual void on_pause ( )
protectedvirtualinherited

The action which will be done when the user decides to pause the CMachine execution

Definition at line 418 of file Machine.h.

◆ parameter_hash_changed()

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

Definition at line 296 of file SGObject.cpp.

◆ pause_computation()

SG_FORCED_INLINE void pause_computation ( )
inherited

Pause the algorithm if the flag is set

Definition at line 327 of file Machine.h.

◆ post_lock()

virtual void post_lock ( CLabels labs,
CFeatures features 
)
virtualinherited

post lock

Definition at line 299 of file Machine.h.

◆ print_modsel_params()

void print_modsel_params ( )
inherited

prints all parameter registered for model selection and their type

Definition at line 512 of file SGObject.cpp.

◆ print_serializable()

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

prints registered parameters out

Parameters
prefixprefix for members

Definition at line 342 of file SGObject.cpp.

◆ ref()

int32_t ref ( )
inherited

increase reference counter

Returns
reference count

Definition at line 186 of file SGObject.cpp.

◆ ref_count()

int32_t ref_count ( )
inherited

display reference counter

Returns
reference count

Definition at line 193 of file SGObject.cpp.

◆ register_observable_param()

void register_observable_param ( const std::string &  name,
const SG_OBS_VALUE_TYPE  type,
const std::string &  description 
)
protectedinherited

Register which params this object can emit.

Parameters
namethe param name
typethe param type
descriptiona user oriented description

Definition at line 871 of file SGObject.cpp.

◆ register_param() [1/2]

void register_param ( Tag< T > &  _tag,
const T &  value 
)
protectedinherited

Registers a class parameter which is identified by a tag. This enables the parameter to be modified by set() and retrieved by get(). Parameters can be registered in the constructor of the class.

Parameters
_tagname and type information of parameter
valuevalue of the parameter

Definition at line 472 of file SGObject.h.

◆ register_param() [2/2]

void register_param ( const std::string &  name,
const T &  value 
)
protectedinherited

Registers a class parameter which is identified by a name. This enables the parameter to be modified by set() and retrieved by get(). Parameters can be registered in the constructor of the class.

Parameters
namename of the parameter
valuevalue of the parameter along with type information

Definition at line 485 of file SGObject.h.

◆ reset_computation_variables()

void reset_computation_variables ( )
protectedinherited

reset the computation variables

Definition at line 403 of file Machine.h.

◆ resume_computation()

SG_FORCED_INLINE void resume_computation ( )
inherited

Resume current computation (sets the flag)

Definition at line 340 of file Machine.h.

◆ save_serializable()

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 348 of file SGObject.cpp.

◆ 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.

Exceptions
ShogunExceptionwill be thrown if an error occurs.

Reimplemented in CKernel.

Definition at line 470 of file SGObject.cpp.

◆ 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.

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 465 of file SGObject.cpp.

◆ set() [1/2]

void set ( const Tag< T > &  _tag,
const T &  value 
)
inherited

Setter for a class parameter, identified by a Tag. Throws an exception if the class does not have such a parameter.

Parameters
_tagname and type information of parameter
valuevalue of the parameter

Definition at line 342 of file SGObject.h.

◆ set() [2/2]

void set ( const std::string &  name,
const T &  value 
)
inherited

Setter for a class parameter, identified by a name. Throws an exception if the class does not have such a parameter.

Parameters
namename of the parameter
valuevalue of the parameter along with type information

Definition at line 368 of file SGObject.h.

◆ set_bias()

void set_bias ( float64_t  b)
virtualinherited

set bias

Parameters
bnew bias

Definition at line 108 of file LinearMachine.cpp.

◆ set_bias_enabled()

void set_bias_enabled ( bool  enable_bias)

set if bias shall be enabled

Parameters
enable_biasif bias shall be enabled

Definition at line 146 of file LibLinear.h.

◆ set_C()

void set_C ( float64_t  c_neg,
float64_t  c_pos 
)

set C

Parameters
c_negC1
c_posC2

Definition at line 116 of file LibLinear.h.

◆ set_compute_bias()

void set_compute_bias ( bool  compute_bias)
virtualinherited

Set m_compute_bias

Determines if bias compution is considered or not

Parameters
compute_biasnew m_compute_bias

Definition at line 118 of file LinearMachine.cpp.

◆ set_epsilon()

void set_epsilon ( float64_t  eps)

set epsilon

Parameters
epsnew epsilon

Definition at line 134 of file LibLinear.h.

◆ set_features()

void set_features ( CDotFeatures feat)
virtualinherited

set features

Parameters
featfeatures to set

Reimplemented in CLDA, CLPBoost, and CLPM.

Definition at line 128 of file LinearMachine.cpp.

◆ set_generic() [1/16]

void set_generic ( )
inherited

Definition at line 73 of file SGObject.cpp.

◆ set_generic() [2/16]

void set_generic ( )
inherited

Definition at line 78 of file SGObject.cpp.

◆ set_generic() [3/16]

void set_generic ( )
inherited

Definition at line 83 of file SGObject.cpp.

◆ set_generic() [4/16]

void set_generic ( )
inherited

Definition at line 88 of file SGObject.cpp.

◆ set_generic() [5/16]

void set_generic ( )
inherited

Definition at line 93 of file SGObject.cpp.

◆ set_generic() [6/16]

void set_generic ( )
inherited

Definition at line 98 of file SGObject.cpp.

◆ set_generic() [7/16]

void set_generic ( )
inherited

Definition at line 103 of file SGObject.cpp.

◆ set_generic() [8/16]

void set_generic ( )
inherited

Definition at line 108 of file SGObject.cpp.

◆ set_generic() [9/16]

void set_generic ( )
inherited

Definition at line 113 of file SGObject.cpp.

◆ set_generic() [10/16]

void set_generic ( )
inherited

Definition at line 118 of file SGObject.cpp.

◆ set_generic() [11/16]

void set_generic ( )
inherited

Definition at line 123 of file SGObject.cpp.

◆ set_generic() [12/16]

void set_generic ( )
inherited

Definition at line 128 of file SGObject.cpp.

◆ set_generic() [13/16]

void set_generic ( )
inherited

Definition at line 133 of file SGObject.cpp.

◆ set_generic() [14/16]

void set_generic ( )
inherited

Definition at line 138 of file SGObject.cpp.

◆ set_generic() [15/16]

void set_generic ( )
inherited

Definition at line 143 of file SGObject.cpp.

◆ 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

Parameters
ioio object to use

Definition at line 262 of file SGObject.cpp.

◆ set_global_parallel()

void set_global_parallel ( Parallel parallel)
inherited

set the parallel object

Parameters
parallelparallel object to use

Definition at line 275 of file SGObject.cpp.

◆ set_global_version()

void set_global_version ( Version version)
inherited

set the version object

Parameters
versionversion object to use

Definition at line 317 of file SGObject.cpp.

◆ set_labels()

void set_labels ( CLabels lab)
virtualinherited

set labels

Parameters
lablabels

Reimplemented in CNeuralNetwork, CGaussianProcessMachine, CCARTree, CStructuredOutputMachine, CRelaxedTree, and CMulticlassMachine.

Definition at line 72 of file Machine.cpp.

◆ set_liblinear_solver_type()

void set_liblinear_solver_type ( LIBLINEAR_SOLVER_TYPE  st)

set the liblinear solver

Parameters
stthe liblinear solver

Definition at line 100 of file LibLinear.h.

◆ set_linear_term()

void set_linear_term ( const SGVector< float64_t linear_term)

set the linear term for qp

Definition at line 1349 of file LibLinear.cpp.

◆ set_max_iterations()

void set_max_iterations ( int32_t  max_iter = 1000)

set the maximum number of iterations liblinear is allowed to do

Definition at line 164 of file LibLinear.h.

◆ set_max_train_time()

void set_max_train_time ( float64_t  t)
inherited

set maximum training time

Parameters
tmaximimum training time

Definition at line 89 of file Machine.cpp.

◆ set_solver_type()

void set_solver_type ( ESolverType  st)
inherited

set solver type

Parameters
stsolver type

Definition at line 104 of file Machine.cpp.

◆ set_store_model_features()

void set_store_model_features ( bool  store_model)
virtualinherited

Setter for store-model-features-after-training flag

Parameters
store_modelwhether model should be stored after training

Definition at line 114 of file Machine.cpp.

◆ set_w()

void set_w ( const SGVector< float64_t src_w)
virtualinherited

set w

Parameters
src_wnew w

Definition at line 103 of file LinearMachine.cpp.

◆ shallow_copy()

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 226 of file SGObject.cpp.

◆ store_model_features()

void store_model_features ( )
protectedvirtualinherited

Stores feature data of underlying model. Does nothing because Linear machines store the normal vector of the separating hyperplane and therefore the model anyway

Reimplemented from CMachine.

Definition at line 141 of file LinearMachine.cpp.

◆ subscribe_to_parameters()

void subscribe_to_parameters ( ParameterObserverInterface obs)
inherited

Subscribe a parameter observer to watch over params

Definition at line 811 of file SGObject.cpp.

◆ supports_locking()

virtual bool supports_locking ( ) const
virtualinherited
Returns
whether this machine supports locking

Reimplemented in CKernelMachine.

Definition at line 305 of file Machine.h.

◆ train()

bool train ( CFeatures data = NULL)
virtualinherited

Train machine

Returns
whether training was successful

Reimplemented from CMachine.

Reimplemented in CSGDQN.

Definition at line 169 of file LinearMachine.cpp.

◆ train_locked()

virtual bool train_locked ( SGVector< index_t indices)
virtualinherited

Trains a locked machine on a set of indices. Error if machine is not locked

NOT IMPLEMENTED

Parameters
indicesindex vector (of locked features) that is used for training
Returns
whether training was successful

Reimplemented in CKernelMachine.

Definition at line 248 of file Machine.h.

◆ train_machine()

bool train_machine ( CFeatures data = NULL)
protectedvirtual

train linear SVM classifier

Parameters
datatraining data (parameter can be avoided if distance or kernel-based classifiers are used and distance/kernels are initialized with train data)
Returns
whether training was successful

Reimplemented from CMachine.

Reimplemented in CDomainAdaptationSVMLinear.

Definition at line 79 of file LibLinear.cpp.

◆ train_require_labels()

virtual bool train_require_labels ( ) const
protectedvirtualinherited

returns whether machine require labels for training

Reimplemented in COnlineLinearMachine, CKMeansBase, CHierarchical, CLinearLatentMachine, CVwConditionalProbabilityTree, CConditionalProbabilityTree, and CLibSVMOneClass.

Definition at line 397 of file Machine.h.

◆ unref()

int32_t unref ( )
inherited

decrement reference counter and deallocate object if refcount is zero before or after decrementing it

Returns
reference count

Definition at line 200 of file SGObject.cpp.

◆ unset_generic()

void unset_generic ( )
inherited

unset generic type

this has to be called in classes specializing a template class

Definition at line 337 of file SGObject.cpp.

◆ update_parameter_hash()

void update_parameter_hash ( )
virtualinherited

Updates the hash of current parameter combination

Definition at line 282 of file SGObject.cpp.

Member Data Documentation

◆ bias

float64_t bias
protectedinherited

bias

Definition at line 195 of file LinearMachine.h.

◆ C1

float64_t C1
protected

C1

Definition at line 205 of file LibLinear.h.

◆ C2

float64_t C2
protected

C2

Definition at line 207 of file LibLinear.h.

◆ epsilon

float64_t epsilon
protected

epsilon

Definition at line 211 of file LibLinear.h.

◆ features

CDotFeatures* features
protectedinherited

features

Definition at line 197 of file LinearMachine.h.

◆ io

SGIO* io
inherited

io

Definition at line 600 of file SGObject.h.

◆ liblinear_solver_type

LIBLINEAR_SOLVER_TYPE liblinear_solver_type
protected

solver type

Definition at line 219 of file LibLinear.h.

◆ m_cancel_computation

std::atomic<bool> m_cancel_computation
protectedinherited

Cancel computation

Definition at line 448 of file Machine.h.

◆ m_compute_bias

bool m_compute_bias
protectedinherited

If true, bias is computed in train method

Definition at line 199 of file LinearMachine.h.

◆ m_data_locked

bool m_data_locked
protectedinherited

whether data is locked

Definition at line 445 of file Machine.h.

◆ m_gradient_parameters

Parameter* m_gradient_parameters
inherited

parameters wrt which we can compute gradients

Definition at line 615 of file SGObject.h.

◆ m_hash

uint32_t m_hash
inherited

Hash of parameter values

Definition at line 618 of file SGObject.h.

◆ m_labels

CLabels* m_labels
protectedinherited

labels

Definition at line 436 of file Machine.h.

◆ m_linear_term

SGVector<float64_t> m_linear_term
protected

precomputed linear term

Definition at line 216 of file LibLinear.h.

◆ m_max_train_time

float64_t m_max_train_time
protectedinherited

maximum training time

Definition at line 433 of file Machine.h.

◆ m_model_selection_parameters

Parameter* m_model_selection_parameters
inherited

model selection parameters

Definition at line 612 of file SGObject.h.

◆ m_mutex

std::mutex m_mutex
protectedinherited

Mutex used to pause threads

Definition at line 457 of file Machine.h.

◆ m_parameters

Parameter* m_parameters
inherited

parameters

Definition at line 609 of file SGObject.h.

◆ m_pause_computation

std::condition_variable m_pause_computation
protectedinherited

Conditional variable to make threads wait

Definition at line 454 of file Machine.h.

◆ m_pause_computation_flag

std::atomic<bool> m_pause_computation_flag
protectedinherited

Pause computation flag

Definition at line 451 of file Machine.h.

◆ m_solver_type

ESolverType m_solver_type
protectedinherited

solver type

Definition at line 439 of file Machine.h.

◆ m_store_model_features

bool m_store_model_features
protectedinherited

whether model features should be stored after training

Definition at line 442 of file Machine.h.

◆ max_iterations

int32_t max_iterations
protected

maximum number of iterations

Definition at line 213 of file LibLinear.h.

◆ parallel

Parallel* parallel
inherited

parallel

Definition at line 603 of file SGObject.h.

◆ use_bias

bool use_bias
protected

if bias shall be used

Definition at line 209 of file LibLinear.h.

◆ version

Version* version
inherited

version

Definition at line 606 of file SGObject.h.


The documentation for this class was generated from the following files:

SHOGUN Machine Learning Toolbox - Documentation