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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.h48 行定义.

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

Public 成员函数

 CRandomFourierGaussPreproc ()
 
 CRandomFourierGaussPreproc (const CRandomFourierGaussPreproc &pr)
 
 ~CRandomFourierGaussPreproc ()
 
virtual SGMatrix< float64_tapply_to_feature_matrix (CFeatures *features)
 
virtual SGVector< float64_tapply_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 CFeaturesapply (CFeatures *features)
 
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 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 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

void copy (const CRandomFourierGaussPreproc &feats)
 
bool test_rfinited () const
 
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

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_trandomcoeff_additive
 
float64_trandomcoeff_multiplicative
 

构造及析构函数说明

default constructor

在文件 RandomFourierGaussPreproc.cpp64 行定义.

alternative constructor

在文件 RandomFourierGaussPreproc.cpp99 行定义.

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

在文件 RandomFourierGaussPreproc.cpp129 行定义.

成员函数说明

virtual CFeatures* apply ( CFeatures features)
virtualinherited

generic interface for applying the preprocessor. used as a wrapper for apply_to_feature_matrix() method

参数
featuresthe dense input features
返回
the result feature object after applying the preprocessor

实现了 CPreprocessor.

SGMatrix< float64_t > apply_to_feature_matrix ( CFeatures features)
virtual

default processing routine, inherited from base class

参数
featuresthe 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.cpp370 行定义.

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

alternative processing routine, inherited from base class

参数
vectorthe 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.cpp352 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
dictdictionary of parameters to be built.

在文件 SGObject.cpp1243 行定义.

void cleanup ( )
virtual

inherited from base class does nothing

实现了 CPreprocessor.

在文件 RandomFourierGaussPreproc.cpp413 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.cpp1360 行定义.

void copy ( const CRandomFourierGaussPreproc feats)
protected

helper for copy constructor and assignment operator=

在文件 RandomFourierGaussPreproc.cpp19 行定义.

CSGObject * deep_copy ( ) const
virtualinherited

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

在文件 SGObject.cpp200 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.cpp1264 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.cpp144 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.cpp158 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.cpp136 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.cpp140 行定义.

SGIO * get_global_io ( )
inherited

get the io object

返回
io object

在文件 SGObject.cpp237 行定义.

Parallel * get_global_parallel ( )
inherited

get the parallel object

返回
parallel object

在文件 SGObject.cpp278 行定义.

Version * get_global_version ( )
inherited

get the version object

返回
version object

在文件 SGObject.cpp291 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.cpp170 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.cpp1135 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.cpp1159 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.cpp1172 行定义.

virtual const char* get_name ( ) const
virtual

return the name of the preprocessor

实现了 CSGObject.

在文件 RandomFourierGaussPreproc.h168 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.cpp258 行定义.

virtual EPreprocessorType get_type ( ) const
virtual

return a type of preprocessor

重载 CDensePreprocessor< float64_t > .

在文件 RandomFourierGaussPreproc.h171 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
fthe 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.cpp320 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.cpp200 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.cpp297 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_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.cpp704 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_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.cpp545 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
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.cpp374 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.

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

在文件 SGObject.cpp1062 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.

CDynamicArray< T >, CDynamicArray< float64_t >, CDynamicArray< float32_t >, CDynamicArray< int32_t >, CDynamicArray< char >, CDynamicArray< bool > , 以及 CDynamicObjectArray 重载.

在文件 SGObject.cpp1057 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_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.cpp742 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_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.cpp949 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_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.cpp889 行定义.

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

在文件 SGObject.cpp263 行定义.

void print_modsel_params ( )
inherited

prints all parameter registered for model selection and their type

在文件 SGObject.cpp1111 行定义.

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

prints registered parameters out

参数
prefixprefix for members

在文件 SGObject.cpp309 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
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.cpp315 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.

CKernel 重载.

在文件 SGObject.cpp1072 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.

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.cpp1067 行定义.

void set_dim_feature_space ( const int32_t  dim)

a setter

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

在文件 RandomFourierGaussPreproc.cpp148 行定义.

void set_dim_input_space ( const int32_t  dim)

a setter

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

在文件 RandomFourierGaussPreproc.cpp174 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp42 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp47 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp52 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp57 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp62 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp67 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp72 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp77 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp82 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp87 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp92 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp97 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp102 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp107 行定义.

void set_generic ( )
inherited

在文件 SGObject.cpp112 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.cpp230 行定义.

void set_global_parallel ( Parallel parallel)
inherited

set the parallel object

参数
parallelparallel object to use

在文件 SGObject.cpp243 行定义.

void set_global_version ( Version version)
inherited

set the version object

参数
versionversion object to use

在文件 SGObject.cpp284 行定义.

void set_kernelwidth ( const float64_t  width)

setter for kernel width

参数
widthkernel width to be set

在文件 RandomFourierGaussPreproc.cpp162 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.cpp290 行定义.

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.cpp194 行定义.

bool test_rfinited ( ) const
protected

tests whether rf features have already been initialized

在文件 RandomFourierGaussPreproc.cpp184 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.cpp304 行定义.

void update_parameter_hash ( )
virtualinherited

Updates the hash of current parameter combination

在文件 SGObject.cpp250 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.h210 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.h199 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.h189 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.h205 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.h194 行定义.

SGIO* io
inherited

io

在文件 SGObject.h496 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.h184 行定义.

Parameter* m_gradient_parameters
inherited

parameters wrt which we can compute gradients

在文件 SGObject.h511 行定义.

uint32_t m_hash
inherited

Hash of parameter values

在文件 SGObject.h517 行定义.

Parameter* m_model_selection_parameters
inherited

model selection parameters

在文件 SGObject.h508 行定义.

ParameterMap* m_parameter_map
inherited

map for different parameter versions

在文件 SGObject.h514 行定义.

Parameter* m_parameters
inherited

parameters

在文件 SGObject.h505 行定义.

Parallel* parallel
inherited

parallel

在文件 SGObject.h499 行定义.

float64_t* randomcoeff_additive
protected

random coefficient length = cur_dim_feature_space

在文件 RandomFourierGaussPreproc.h221 行定义.

float64_t* randomcoeff_multiplicative
protected

random coefficient length = cur_dim_feature_space* cur_dim_input_space

在文件 RandomFourierGaussPreproc.h227 行定义.

Version* version
inherited

version

在文件 SGObject.h502 行定义.


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