SHOGUN
v3.2.0
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The MultitaskKernel allows Multitask Learning via a modified kernel function.
Normalization is based on a mask that is defined by a number of pair of tasks.
Definition at line 29 of file MultitaskKernelMaskPairNormalizer.h.
Public Member Functions | |
CMultitaskKernelMaskPairNormalizer () | |
CMultitaskKernelMaskPairNormalizer (std::vector< int32_t > task_vector_, std::vector< std::pair< int32_t, int32_t > > active_pairs_) | |
virtual | ~CMultitaskKernelMaskPairNormalizer () |
virtual bool | init (CKernel *k) |
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) |
std::vector< int32_t > | get_task_vector_lhs () const |
void | set_task_vector_lhs (std::vector< int32_t > vec) |
std::vector< int32_t > | get_task_vector_rhs () const |
void | set_task_vector_rhs (std::vector< int32_t > vec) |
void | set_task_vector (std::vector< int32_t > vec) |
float64_t | get_similarity (int32_t task_lhs, int32_t task_rhs) |
std::vector< std::pair< int32_t, int32_t > > | get_active_pairs () |
float64_t | get_normalization_constant () const |
float64_t | set_normalization_constant (float64_t constant) |
virtual const char * | get_name () const |
CMultitaskKernelMaskPairNormalizer * | KernelNormalizerToMultitaskKernelMaskPairNormalizer (CKernelNormalizer *n) |
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 Attributes | |
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 Member Functions | |
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 Attributes | |
std::vector< std::pair< int32_t, int32_t > > | active_pairs |
std::vector< int32_t > | task_vector_lhs |
std::vector< int32_t > | task_vector_rhs |
float64_t | scale |
float64_t | normalization_constant |
ENormalizerType | m_type |
default constructor
Definition at line 36 of file MultitaskKernelMaskPairNormalizer.h.
CMultitaskKernelMaskPairNormalizer | ( | std::vector< int32_t > | task_vector_, |
std::vector< std::pair< int32_t, int32_t > > | active_pairs_ | ||
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default constructor
task_vector_ | |
active_pairs_ |
Definition at line 45 of file MultitaskKernelMaskPairNormalizer.h.
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virtual |
default destructor
Definition at line 57 of file MultitaskKernelMaskPairNormalizer.h.
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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. |
Definition at line 1156 of file SGObject.cpp.
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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.
Definition at line 1273 of file SGObject.cpp.
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virtualinherited |
A deep copy. All the instance variables will also be copied.
Definition at line 126 of file SGObject.h.
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) |
Definition at line 1177 of file SGObject.cpp.
std::vector<std::pair<int32_t, int32_t> > get_active_pairs | ( | ) |
Definition at line 217 of file MultitaskKernelMaskPairNormalizer.h.
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Definition at line 1060 of file SGObject.cpp.
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Returns description of a given parameter string, if it exists. SG_ERROR otherwise
param_name | name of the parameter |
Definition at line 1084 of file SGObject.cpp.
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Returns index of model selection parameter with provided index
param_name | name of model selection parameter |
Definition at line 1097 of file SGObject.cpp.
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Implements CSGObject.
Definition at line 239 of file MultitaskKernelMaskPairNormalizer.h.
float64_t get_normalization_constant | ( | ) | const |
Definition at line 223 of file MultitaskKernelMaskPairNormalizer.h.
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getter for normalizer type
Definition at line 100 of file KernelNormalizer.h.
float64_t get_similarity | ( | int32_t | task_lhs, |
int32_t | task_rhs | ||
) |
task_lhs | task_id on left hand side |
task_rhs | task_id on right hand side |
Definition at line 193 of file MultitaskKernelMaskPairNormalizer.h.
std::vector<int32_t> get_task_vector_lhs | ( | ) | const |
Definition at line 140 of file MultitaskKernelMaskPairNormalizer.h.
std::vector<int32_t> get_task_vector_rhs | ( | ) | const |
Definition at line 161 of file MultitaskKernelMaskPairNormalizer.h.
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initialization of the normalizer
k | kernel |
Implements CKernelNormalizer.
Definition at line 63 of file MultitaskKernelMaskPairNormalizer.h.
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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 |
Definition at line 228 of file SGObject.cpp.
CMultitaskKernelMaskPairNormalizer* KernelNormalizerToMultitaskKernelMaskPairNormalizer | ( | CKernelNormalizer * | n | ) |
casts kernel normalizer to multitask kernel mask normalizer
n | kernel normalizer to cast |
Definition at line 247 of file MultitaskKernelMaskPairNormalizer.h.
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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 |
Definition at line 633 of file SGObject.cpp.
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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
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 |
Definition at line 474 of file SGObject.cpp.
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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) |
Definition at line 305 of file SGObject.cpp.
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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. |
Reimplemented in CWeightedDegreePositionStringKernel, CKernel, CList, CAlphabet, CLinearHMM, CGaussianKernel, CInverseMultiQuadricKernel, CCircularKernel, and CExponentialKernel.
Definition at line 989 of file SGObject.cpp.
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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. |
Reimplemented in CDynamicArray< T >, CDynamicArray< float64_t >, CDynamicArray< float32_t >, CDynamicArray< int32_t >, CDynamicArray< char >, CDynamicArray< bool >, and CDynamicObjectArray.
Definition at line 984 of file SGObject.cpp.
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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
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 |
Definition at line 671 of file SGObject.cpp.
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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 |
Definition at line 878 of file SGObject.cpp.
normalize the kernel value
value | kernel value |
idx_lhs | index of left hand side vector |
idx_rhs | index of right hand side vector |
Implements CKernelNormalizer.
Definition at line 101 of file MultitaskKernelMaskPairNormalizer.h.
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 |
Implements CKernelNormalizer.
Definition at line 123 of file MultitaskKernelMaskPairNormalizer.h.
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 |
Implements CKernelNormalizer.
Definition at line 133 of file MultitaskKernelMaskPairNormalizer.h.
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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)
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 |
Definition at line 818 of file SGObject.cpp.
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prints all parameter registered for model selection and their type
Definition at line 1036 of file SGObject.cpp.
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prints registered parameters out
prefix | prefix for members |
Definition at line 240 of file SGObject.cpp.
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register the parameters
Reimplemented in CMultitaskKernelPlifNormalizer.
Definition at line 92 of file KernelNormalizer.h.
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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) |
Definition at line 246 of file SGObject.cpp.
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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. |
Reimplemented in CKernel.
Definition at line 999 of file SGObject.cpp.
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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. |
Reimplemented in CKernel, CDynamicArray< T >, CDynamicArray< float64_t >, CDynamicArray< float32_t >, CDynamicArray< int32_t >, CDynamicArray< char >, CDynamicArray< bool >, and CDynamicObjectArray.
Definition at line 994 of file SGObject.cpp.
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Definition at line 41 of file SGObject.cpp.
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Definition at line 46 of file SGObject.cpp.
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Definition at line 51 of file SGObject.cpp.
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Definition at line 56 of file SGObject.cpp.
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Definition at line 61 of file SGObject.cpp.
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Definition at line 66 of file SGObject.cpp.
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Definition at line 71 of file SGObject.cpp.
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Definition at line 76 of file SGObject.cpp.
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Definition at line 81 of file SGObject.cpp.
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Definition at line 86 of file SGObject.cpp.
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Definition at line 91 of file SGObject.cpp.
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Definition at line 96 of file SGObject.cpp.
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Definition at line 101 of file SGObject.cpp.
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Definition at line 106 of file SGObject.cpp.
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Definition at line 111 of file SGObject.cpp.
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set generic type to T
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set the parallel object
parallel | parallel object to use |
Definition at line 180 of file SGObject.cpp.
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set the version object
version | version object to use |
Definition at line 215 of file SGObject.cpp.
constant | normalization constant |
Definition at line 229 of file MultitaskKernelMaskPairNormalizer.h.
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setter for normalizer type
type | type of normalizer |
Definition at line 108 of file KernelNormalizer.h.
void set_task_vector | ( | std::vector< int32_t > | vec | ) |
vec | task vector with containing task_id for each example |
Definition at line 181 of file MultitaskKernelMaskPairNormalizer.h.
void set_task_vector_lhs | ( | std::vector< int32_t > | vec | ) |
vec | task vector with containing task_id for each example |
Definition at line 147 of file MultitaskKernelMaskPairNormalizer.h.
void set_task_vector_rhs | ( | std::vector< int32_t > | vec | ) |
vec | task vector with containing task_id for each example |
Definition at line 168 of file MultitaskKernelMaskPairNormalizer.h.
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A shallow copy. All the SGObject instance variables will be simply assigned and SG_REF-ed.
Reimplemented in CGaussianKernel.
Definition at line 117 of file SGObject.h.
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unset generic type
this has to be called in classes specializing a template class
Definition at line 235 of file SGObject.cpp.
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Updates the hash of current parameter combination.
Definition at line 187 of file SGObject.cpp.
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list of active tasks
Definition at line 255 of file MultitaskKernelMaskPairNormalizer.h.
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io
Definition at line 473 of file SGObject.h.
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parameters wrt which we can compute gradients
Definition at line 488 of file SGObject.h.
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Hash of parameter values
Definition at line 494 of file SGObject.h.
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model selection parameters
Definition at line 485 of file SGObject.h.
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map for different parameter versions
Definition at line 491 of file SGObject.h.
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parameters
Definition at line 482 of file SGObject.h.
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normalizer type
Definition at line 115 of file KernelNormalizer.h.
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outer normalization constant
Definition at line 267 of file MultitaskKernelMaskPairNormalizer.h.
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parallel
Definition at line 476 of file SGObject.h.
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value of first element
Definition at line 264 of file MultitaskKernelMaskPairNormalizer.h.
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task vector indicating to which task each example on the left hand side belongs
Definition at line 258 of file MultitaskKernelMaskPairNormalizer.h.
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task vector indicating to which task each example on the right hand side belongs
Definition at line 261 of file MultitaskKernelMaskPairNormalizer.h.
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version
Definition at line 479 of file SGObject.h.