The MultitaskKernel allows Multitask Learning via a modified kernel function based on taxonomy.
在文件 MultitaskKernelTreeNormalizer.h 第 376 行定义.
Public 成员函数 | |
CMultitaskKernelTreeNormalizer () | |
CMultitaskKernelTreeNormalizer (std::vector< std::string > task_lhs, std::vector< std::string > task_rhs, CTaxonomy tax) | |
virtual | ~CMultitaskKernelTreeNormalizer () |
void | update_cache () |
virtual float64_t | normalize (float64_t value, int32_t idx_lhs, int32_t idx_rhs) |
virtual float64_t | normalize_lhs (float64_t value, int32_t idx_lhs) |
virtual float64_t | normalize_rhs (float64_t value, int32_t idx_rhs) |
void | set_task_vector_lhs (std::vector< std::string > vec) |
void | set_task_vector_rhs (std::vector< std::string > vec) |
void | set_task_vector (std::vector< std::string > vec) |
int32_t | get_num_betas () |
float64_t | get_beta (int32_t idx) |
void | set_beta (int32_t idx, float64_t weight) |
float64_t | get_node_similarity (int32_t node_lhs, int32_t node_rhs) |
void | set_node_similarity (int32_t node_lhs, int32_t node_rhs, float64_t similarity) |
virtual const char * | get_name () const |
CMultitaskKernelTreeNormalizer * | KernelNormalizerToMultitaskKernelTreeNormalizer (CKernelNormalizer *n) |
virtual bool | init (CKernel *k) |
virtual void | register_params () |
ENormalizerType | get_normalizer_type () |
void | set_normalizer_type (ENormalizerType type) |
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 | |
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 | |
CTaxonomy | taxonomy |
int32_t | num_nodes |
std::vector< int32_t > | task_vector_lhs |
std::vector< int32_t > | task_vector_rhs |
std::vector< float64_t > | dependency_matrix |
float64_t | scale |
ENormalizerType | m_type |
default constructor
在文件 MultitaskKernelTreeNormalizer.h 第 383 行定义.
CMultitaskKernelTreeNormalizer | ( | std::vector< std::string > | task_lhs, |
std::vector< std::string > | task_rhs, | ||
CTaxonomy | tax | ||
) |
default constructor
task_lhs | task vector with containing task_id for each example for left hand side |
task_rhs | task vector with containing task_id for each example for right hand side |
tax | taxonomy |
在文件 MultitaskKernelTreeNormalizer.h 第 393 行定义.
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default destructor
在文件 MultitaskKernelTreeNormalizer.h 第 411 行定义.
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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.
dict | dictionary of parameters to be built. |
在文件 SGObject.cpp 第 1195 行定义.
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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.
在文件 SGObject.cpp 第 1312 行定义.
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A deep copy. All the instance variables will also be copied.
在文件 SGObject.h 第 159 行定义.
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.
other | object to compare with |
accuracy | accuracy to use for comparison (optional) |
在文件 SGObject.cpp 第 1216 行定义.
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idx | id of weight |
实现了 CMultitaskKernelMklNormalizer.
在文件 MultitaskKernelTreeNormalizer.h 第 526 行定义.
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在文件 SGObject.cpp 第 1099 行定义.
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Returns description of a given parameter string, if it exists. SG_ERROR otherwise
param_name | name of the parameter |
在文件 SGObject.cpp 第 1123 行定义.
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Returns index of model selection parameter with provided index
param_name | name of model selection parameter |
在文件 SGObject.cpp 第 1136 行定义.
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float64_t get_node_similarity | ( | int32_t | node_lhs, |
int32_t | node_rhs | ||
) |
node_lhs | node_id on left hand side |
node_rhs | node_id on right hand side |
在文件 MultitaskKernelTreeNormalizer.h 第 551 行定义.
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getter for normalizer type
在文件 KernelNormalizer.h 第 100 行定义.
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实现了 CMultitaskKernelMklNormalizer.
在文件 MultitaskKernelTreeNormalizer.h 第 516 行定义.
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initialization of the normalizer
k | kernel |
实现了 CKernelNormalizer.
在文件 MultitaskKernelMklNormalizer.h 第 41 行定义.
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If the SGSerializable is a class template then TRUE will be returned and GENERIC is set to the type of the generic.
generic | set to the type of the generic if returning TRUE |
在文件 SGObject.cpp 第 267 行定义.
CMultitaskKernelTreeNormalizer* KernelNormalizerToMultitaskKernelTreeNormalizer | ( | CKernelNormalizer * | n | ) |
casts kernel normalizer to multitask kernel tree normalizer
n | kernel normalizer to cast |
在文件 MultitaskKernelTreeNormalizer.h 第 586 行定义.
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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)
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 |
在文件 SGObject.cpp 第 672 行定义.
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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
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 |
在文件 SGObject.cpp 第 513 行定义.
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virtualinherited |
Load this object from file. If it will fail (returning FALSE) then this object will contain inconsistent data and should not be used!
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) |
在文件 SGObject.cpp 第 344 行定义.
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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.
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 1028 行定义.
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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.
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 1023 行定义.
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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
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 710 行定义.
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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
param_base | set of TParameter instances to use for migration |
target | parameter info for the resulting TParameter |
在文件 SGObject.cpp 第 917 行定义.
normalize the kernel value
value | kernel value |
idx_lhs | index of left hand side vector |
idx_rhs | index of right hand side vector |
实现了 CKernelNormalizer.
在文件 MultitaskKernelTreeNormalizer.h 第 441 行定义.
normalize only the left hand side vector
value | value of a component of the left hand side feature vector |
idx_lhs | index of left hand side vector |
重载 CMultitaskKernelMklNormalizer .
在文件 MultitaskKernelTreeNormalizer.h 第 462 行定义.
normalize only the right hand side vector
value | value of a component of the right hand side feature vector |
idx_rhs | index of right hand side vector |
重载 CMultitaskKernelMklNormalizer .
在文件 MultitaskKernelTreeNormalizer.h 第 472 行定义.
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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)
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 857 行定义.
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prints all parameter registered for model selection and their type
在文件 SGObject.cpp 第 1075 行定义.
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Save this object to file.
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) |
在文件 SGObject.cpp 第 285 行定义.
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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.
ShogunException | Will be thrown if an error occurres. |
被 CKernel 重载.
在文件 SGObject.cpp 第 1038 行定义.
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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.
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 1033 行定义.
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idx | id of weight |
weight | weight of node with given id |
实现了 CMultitaskKernelMklNormalizer.
在文件 MultitaskKernelTreeNormalizer.h 第 536 行定义.
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在文件 SGObject.cpp 第 40 行定义.
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在文件 SGObject.cpp 第 45 行定义.
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在文件 SGObject.cpp 第 50 行定义.
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在文件 SGObject.cpp 第 55 行定义.
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在文件 SGObject.cpp 第 60 行定义.
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在文件 SGObject.cpp 第 65 行定义.
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在文件 SGObject.cpp 第 70 行定义.
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在文件 SGObject.cpp 第 75 行定义.
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在文件 SGObject.cpp 第 80 行定义.
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在文件 SGObject.cpp 第 85 行定义.
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在文件 SGObject.cpp 第 90 行定义.
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在文件 SGObject.cpp 第 95 行定义.
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在文件 SGObject.cpp 第 100 行定义.
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在文件 SGObject.cpp 第 105 行定义.
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在文件 SGObject.cpp 第 110 行定义.
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set generic type to T
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void set_node_similarity | ( | int32_t | node_lhs, |
int32_t | node_rhs, | ||
float64_t | similarity | ||
) |
node_lhs | node_id on left hand side |
node_rhs | node_id on right hand side |
similarity | similarity between nodes |
在文件 MultitaskKernelTreeNormalizer.h 第 566 行定义.
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void set_task_vector | ( | std::vector< std::string > | vec | ) |
vec | task vector with containing task_id for each example |
在文件 MultitaskKernelTreeNormalizer.h 第 509 行定义.
void set_task_vector_lhs | ( | std::vector< std::string > | vec | ) |
vec | task vector with containing task_id for each example |
在文件 MultitaskKernelTreeNormalizer.h 第 480 行定义.
void set_task_vector_rhs | ( | std::vector< std::string > | vec | ) |
vec | task vector with containing task_id for each example |
在文件 MultitaskKernelTreeNormalizer.h 第 496 行定义.
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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 150 行定义.
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unset generic type
this has to be called in classes specializing a template class
在文件 SGObject.cpp 第 274 行定义.
void update_cache | ( | ) |
update cache
在文件 MultitaskKernelTreeNormalizer.h 第 417 行定义.
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Updates the hash of current parameter combination.
在文件 SGObject.cpp 第 226 行定义.
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MxM matrix encoding similarity between tasks
在文件 MultitaskKernelTreeNormalizer.h 第 605 行定义.
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io
在文件 SGObject.h 第 513 行定义.
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parameters wrt which we can compute gradients
在文件 SGObject.h 第 528 行定义.
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Hash of parameter values
在文件 SGObject.h 第 534 行定义.
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model selection parameters
在文件 SGObject.h 第 525 行定义.
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map for different parameter versions
在文件 SGObject.h 第 531 行定义.
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parameters
在文件 SGObject.h 第 522 行定义.
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normalizer type
在文件 KernelNormalizer.h 第 115 行定义.
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number of tasks
在文件 MultitaskKernelTreeNormalizer.h 第 596 行定义.
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parallel
在文件 SGObject.h 第 516 行定义.
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scale constant obtained from k(0,0)
在文件 MultitaskKernelMklNormalizer.h 第 125 行定义.
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task vector indicating to which task each example on the left hand side belongs
在文件 MultitaskKernelTreeNormalizer.h 第 599 行定义.
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task vector indicating to which task each example on the right hand side belongs
在文件 MultitaskKernelTreeNormalizer.h 第 602 行定义.
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taxonomy
在文件 MultitaskKernelTreeNormalizer.h 第 593 行定义.
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version
在文件 SGObject.h 第 519 行定义.