CRandomFourierGaussPreproc类 参考

详细描述

Preprocessor CRandomFourierGaussPreproc implements Random Fourier Features for the Gauss kernel a la Ali Rahimi and Ben Recht Nips2007 after preprocessing the features using them in a linear kernel approximates a gaussian kernel.

approximation quality depends on dimension of feature space, NOT on number of data.

effectively it requires two parameters for initialization: (A) the dimension of the input features stored in dim_input_space (B) the dimension of the output feature space

in order to make it work there are two ways: (1) if you have already previously computed random fourier features which you want to use together with newly computed ones, then you have to take the random coefficients from the previous computation and provide them via void set_randomcoefficients(...) for the new computation this case is important for example if you compute separately features on training and testing data in two feature objects

in this case you have to set 1a) void set_randomcoefficients(...)

(2) if you compute random fourier features from scratch in this case you have to set 2a) set_kernelwidth(...) 2b) void set_dim_feature_space(const int32_t dim); 2c) set_dim_input_space(const int32_t dim); 2d) init_randomcoefficients() or apply_to_feature_matrix(...)

在文件 RandomFourierGaussPreproc.h 第 49 行定义.

类 CRandomFourierGaussPreproc 继承关系图:

Public 成员函数
	CRandomFourierGaussPreproc ()
	CRandomFourierGaussPreproc (const CRandomFourierGaussPreproc &pr)
	~CRandomFourierGaussPreproc ()
virtual SGMatrix< float64_t >	apply_to_feature_matrix (CFeatures *features)
virtual SGVector< float64_t >	apply_to_feature_vector (SGVector< float64_t > vector)
virtual EFeatureType	get_feature_type ()
virtual EFeatureClass	get_feature_class ()
virtual bool	init (CFeatures *f)
void	set_kernelwidth (const float64_t width)
float64_t	get_kernelwidth () const
void	get_randomcoefficients (float64_t **randomcoeff_additive2, float64_t **randomcoeff_multiplicative2, int32_t *dim_feature_space2, int32_t *dim_input_space2, float64_t *kernelwidth2) const
void	set_randomcoefficients (float64_t *randomcoeff_additive2, float64_t *randomcoeff_multiplicative2, const int32_t dim_feature_space2, const int32_t dim_input_space2, const float64_t kernelwidth2)
void	set_dim_input_space (const int32_t dim)
void	set_dim_feature_space (const int32_t dim)
bool	init_randomcoefficients ()
int32_t	get_dim_input_space () const
int32_t	get_dim_feature_space () const
void	cleanup ()
virtual const char *	get_name () const
	return the name of the preprocessor 更多...
virtual EPreprocessorType	get_type () const
	return a type of preprocessor 更多...
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="", 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)
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 bool	update_parameter_hash ()
virtual bool	equals (CSGObject *other, float64_t accuracy=0.0)
virtual CSGObject *	clone ()

Public 属性
SGIO *	io
Parallel *	parallel
Version *	version
Parameter *	m_parameters
Parameter *	m_model_selection_parameters
Parameter *	m_gradient_parameters
ParameterMap *	m_parameter_map
uint32_t	m_hash

Protected 成员函数
void	copy (const CRandomFourierGaussPreproc &feats)
bool	test_rfinited () const
virtual TParameter *	migrate (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
float64_t	kernelwidth
float64_t	cur_kernelwidth
int32_t	dim_input_space
int32_t	cur_dim_input_space
int32_t	dim_feature_space
int32_t	cur_dim_feature_space
float64_t *	randomcoeff_additive
float64_t *	randomcoeff_multiplicative

构造及析构函数说明

CRandomFourierGaussPreproc

(

)

default constructor

在文件 RandomFourierGaussPreproc.cpp 第 62 行定义.

CRandomFourierGaussPreproc

(

const CRandomFourierGaussPreproc &

pr

)

alternative constructor

在文件 RandomFourierGaussPreproc.cpp 第 97 行定义.

~CRandomFourierGaussPreproc

(

)

default destructor takes care for float64_t* randomcoeff_additive,float64_t* randomcoeff_multiplicative;

在文件 RandomFourierGaussPreproc.cpp 第 127 行定义.

成员函数说明

SGMatrix< float64_t > apply_to_feature_matrix ( CFeatures *  features )

virtual

default processing routine, inherited from base class

参数

features

the features to be processed, must be of type CDenseFeatures<float64_t>

返回

the processed feature matrix from the CDenseFeatures<float64_t> class in case (2) (see description above) this routine requires only steps 2a) and 2b), the rest is determined automatically

实现了 CDensePreprocessor< float64_t >.

在文件 RandomFourierGaussPreproc.cpp 第 368 行定义.

SGVector< float64_t > apply_to_feature_vector ( SGVector< float64_t >  vector )

virtual

alternative processing routine, inherited from base class

参数

vector

the feature vector to be processed

返回

processed feature vector in order to work this routine requires the steps described above under cases (1) or two (2) before calling this routine

实现了 CDensePreprocessor< float64_t >.

在文件 RandomFourierGaussPreproc.cpp 第 350 行定义.

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

dict	dictionary of parameters to be built.

在文件 SGObject.cpp 第 1156 行定义.

void cleanup ( )

virtual

inherited from base class does nothing

实现了 CPreprocessor.

在文件 RandomFourierGaussPreproc.cpp 第 411 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 1273 行定义.

void copy ( const CRandomFourierGaussPreproc &  feats )

protected

helper for copy constructor and assignment operator=

在文件 RandomFourierGaussPreproc.cpp 第 17 行定义.

virtual CSGObject* deep_copy ( ) const

virtualinherited

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

在文件 SGObject.h 第 126 行定义.

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

other	object to compare with
accuracy	accuracy to use for comparison (optional)

返回

true if all parameters were equal, false if not

在文件 SGObject.cpp 第 1177 行定义.

int32_t get_dim_feature_space

(

)

const

a getter

返回

the set value of protected member dim_feature_space

在文件 RandomFourierGaussPreproc.cpp 第 142 行定义.

int32_t get_dim_input_space

(

)

const

a getter

返回

the set value of protected member dim_input_space

在文件 RandomFourierGaussPreproc.cpp 第 156 行定义.

EFeatureClass get_feature_class ( )

virtual

inherited from base class

返回

F_DREAL

重载 CDensePreprocessor< float64_t > .

在文件 RandomFourierGaussPreproc.cpp 第 134 行定义.

EFeatureType get_feature_type ( )

virtual

inherited from base class

返回

C_DENSE

重载 CDensePreprocessor< float64_t > .

在文件 RandomFourierGaussPreproc.cpp 第 138 行定义.

SGIO * get_global_io ( )

inherited

get the io object

返回

io object

在文件 SGObject.cpp 第 174 行定义.

Parallel * get_global_parallel ( )

inherited

get the parallel object

返回

parallel object

在文件 SGObject.cpp 第 209 行定义.

Version * get_global_version ( )

inherited

get the version object

返回

version object

在文件 SGObject.cpp 第 222 行定义.

float64_t get_kernelwidth

(

)

const

getter for kernel width

返回

kernel width throws exception if kernelwidth <=0

在文件 RandomFourierGaussPreproc.cpp 第 168 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 1060 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_name

name of the parameter

返回

description of the parameter

在文件 SGObject.cpp 第 1084 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_name

name 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 1097 行定义.

virtual const char* get_name ( ) const

virtual

return the name of the preprocessor

实现了 CSGObject.

在文件 RandomFourierGaussPreproc.h 第 169 行定义.

void get_randomcoefficients	(	float64_t **	randomcoeff_additive2,
		float64_t **	randomcoeff_multiplicative2,
		int32_t *	dim_feature_space2,
		int32_t *	dim_input_space2,
		float64_t *	kernelwidth2
	)		const

getter for the random coefficients necessary for creating random fourier features compatible to the current ones returns values of internal members randomcoeff_additive and randomcoeff_multiplicative

在文件 RandomFourierGaussPreproc.cpp 第 256 行定义.

virtual EPreprocessorType get_type ( ) const

virtual

return a type of preprocessor

重载 CDensePreprocessor< float64_t > .

在文件 RandomFourierGaussPreproc.h 第 172 行定义.

bool init ( CFeatures *  f )

virtual

initializer routine calls set_dim_input_space(const int32_t dim); with the proper value calls init_randomcoefficients(); this call does NOT override a previous call to void set_randomcoefficients(...) IF and ONLY IF the dimensions of input AND feature space are equal to the values from the previous call to void set_randomcoefficients(...)

参数

f	the features to be processed, must be of type CDenseFeatures<float64_t>

返回

true if new random coefficients were generated, false if old ones from a call to set_randomcoefficients(...) are kept

实现了 CPreprocessor.

在文件 RandomFourierGaussPreproc.cpp 第 318 行定义.

bool init_randomcoefficients

(

)

computes new random coefficients IF test_rfinited() evaluates to false test_rfinited() evaluates to TRUE if void set_randomcoefficients(...) hase been called and the values set by set_dim_input_space(...) , set_dim_feature_space(...) and set_kernelwidth(...) are consistent to the call of void set_randomcoefficients(...)

throws shogun exception if dim_feature_space <= 0 or dim_input_space <= 0

返回

returns true if test_rfinited() evaluates to false and new coefficients are computed returns false if test_rfinited() evaluates to true and old random coefficients are kept which were set by a previous call to void set_randomcoefficients(...)

this function is useful if you want to use apply_to_feature_vector but cannot call before it init(CFeatures *f)

在文件 RandomFourierGaussPreproc.cpp 第 198 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

generic

set to the type of the generic if returning TRUE

返回

TRUE if a class template.

在文件 SGObject.cpp 第 228 行定义.

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_version	parameter version of the file
current_version	version from which mapping begins (you want to use Version::get_version_parameter() for this in most cases)
file	file to load from
prefix	prefix for members

返回

(sorted) array of created TParameter instances with file data

在文件 SGObject.cpp 第 633 行定义.

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_info	information of parameter
file_version	parameter version of the file, must be <= provided parameter version
file	file to load from
prefix	prefix for members

返回

new array with TParameter instances with the attached data

在文件 SGObject.cpp 第 474 行定义.

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

file	where to load from
prefix	prefix 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.cpp 第 305 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

ShogunException

Will be thrown if an error occurres.

被 CWeightedDegreePositionStringKernel, CKernel, CList, CAlphabet, CLinearHMM, CGaussianKernel, CInverseMultiQuadricKernel, CCircularKernel , 以及 CExponentialKernel 重载.

在文件 SGObject.cpp 第 989 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

ShogunException

Will be thrown if an error occurres.

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 984 行定义.

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_base	set of TParameter instances that are mapped to the provided target parameter infos
base_version	version of the parameter base
target_param_infos	set of SGParamInfo instances that specify the target parameter base

在文件 SGObject.cpp 第 671 行定义.

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_base	set of TParameter instances to use for migration
target	parameter 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.cpp 第 878 行定义.

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_base	set of TParameter instances to use for migration
target	parameter info for the resulting TParameter
replacement	(used as output) here the TParameter instance which is returned by migration is created into
to_migrate	the only source that is used for migration
old_name	with this parameter, a name change may be specified

在文件 SGObject.cpp 第 818 行定义.

void print_modsel_params ( )

inherited

prints all parameter registered for model selection and their type

在文件 SGObject.cpp 第 1036 行定义.

void print_serializable ( const char *  prefix = "" )

virtualinherited

prints registered parameters out

参数

prefix

prefix for members

在文件 SGObject.cpp 第 240 行定义.

bool save_serializable ( CSerializableFile *  file, const char *  prefix = "", int32_t  param_version = Version::get_version_parameter()  )

virtualinherited

Save this object to file.

参数

file	where to save the object; will be closed during returning if PREFIX is an empty string.
prefix	prefix 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.cpp 第 246 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

ShogunException

Will be thrown if an error occurres.

被 CKernel 重载.

在文件 SGObject.cpp 第 999 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

ShogunException

Will be thrown if an error occurres.

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 994 行定义.

void set_dim_feature_space

(

const int32_t

dim

)

a setter

参数

dim	the value of protected member dim_feature_space throws a shogun exception if dim<=0

在文件 RandomFourierGaussPreproc.cpp 第 146 行定义.

void set_dim_input_space

(

const int32_t

dim

)

a setter

参数

dim	the value of protected member dim_input_space throws a shogun exception if dim<=0

在文件 RandomFourierGaussPreproc.cpp 第 172 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

io	io object to use

在文件 SGObject.cpp 第 167 行定义.

void set_global_parallel ( Parallel *  parallel )

inherited

set the parallel object

参数

parallel

parallel object to use

在文件 SGObject.cpp 第 180 行定义.

void set_global_version ( Version *  version )

inherited

set the version object

参数

version

version object to use

在文件 SGObject.cpp 第 215 行定义.

void set_kernelwidth

(

const float64_t

width

)

setter for kernel width

参数

width

kernel width to be set

在文件 RandomFourierGaussPreproc.cpp 第 160 行定义.

void set_randomcoefficients	(	float64_t *	randomcoeff_additive2,
		float64_t *	randomcoeff_multiplicative2,
		const int32_t	dim_feature_space2,
		const int32_t	dim_input_space2,
		const float64_t	kernelwidth2
	)

setter for the random coefficients necessary for creating random fourier features compatible to the previous ones sets values of internal members randomcoeff_additive and randomcoeff_multiplicative simply use as input what you got from get_random_coefficients(...)

在文件 RandomFourierGaussPreproc.cpp 第 288 行定义.

virtual 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.h 第 117 行定义.

bool test_rfinited ( ) const

protected

tests whether rf features have already been initialized

在文件 RandomFourierGaussPreproc.cpp 第 182 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 235 行定义.

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.cpp 第 187 行定义.

类成员变量说明

int32_t cur_dim_feature_space

protected

actual dimension of output features as set by bool init_randomcoefficients() or void set_randomcoefficients

在文件 RandomFourierGaussPreproc.h 第 211 行定义.

int32_t cur_dim_input_space

protected

actual dimension of input features as set by bool init_randomcoefficients() or void set_randomcoefficients

在文件 RandomFourierGaussPreproc.h 第 200 行定义.

float64_t cur_kernelwidth

protected

dimension of input features width of gaussian kernel in the form of exp(-x^2 / (2.0 kernelwidth^2) ) NOTE the 2.0 and the power ^2 !

在文件 RandomFourierGaussPreproc.h 第 190 行定义.

int32_t dim_feature_space

protected

desired dimension of output features as set by void set_dim_feature_space(const int32_t dim)

在文件 RandomFourierGaussPreproc.h 第 206 行定义.

int32_t dim_input_space

protected

desired dimension of input features as set by void set_dim_input_space(const int32_t dim)

在文件 RandomFourierGaussPreproc.h 第 195 行定义.

SGIO* io

inherited

io

在文件 SGObject.h 第 473 行定义.

float64_t kernelwidth

protected

dimension of input features width of gaussian kernel in the form of exp(-x^2 / (2.0 kernelwidth^2) ) NOTE the 2.0 and the power ^2 !

在文件 RandomFourierGaussPreproc.h 第 185 行定义.

Parameter* m_gradient_parameters

inherited

parameters wrt which we can compute gradients

在文件 SGObject.h 第 488 行定义.

uint32_t m_hash

inherited

Hash of parameter values

在文件 SGObject.h 第 494 行定义.

Parameter* m_model_selection_parameters

inherited

model selection parameters

在文件 SGObject.h 第 485 行定义.

ParameterMap* m_parameter_map

inherited

map for different parameter versions

在文件 SGObject.h 第 491 行定义.

Parameter* m_parameters

inherited

parameters

在文件 SGObject.h 第 482 行定义.

Parallel* parallel

inherited

parallel

在文件 SGObject.h 第 476 行定义.

float64_t* randomcoeff_additive

protected

random coefficient length = cur_dim_feature_space

在文件 RandomFourierGaussPreproc.h 第 222 行定义.

float64_t* randomcoeff_multiplicative

protected

random coefficient length = cur_dim_feature_space* cur_dim_input_space

在文件 RandomFourierGaussPreproc.h 第 228 行定义.

Version* version

inherited

version

在文件 SGObject.h 第 479 行定义.

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该类的文档由以下文件生成:

• RandomFourierGaussPreproc.h
• RandomFourierGaussPreproc.cpp