The MultitaskKernel allows learning a piece-wise linear function (PLIF) via MKL.
Definition at line 25 of file MultitaskKernelPlifNormalizer.h.
Public Member Functions | |
CMultitaskKernelPlifNormalizer () | |
CMultitaskKernelPlifNormalizer (std::vector< float64_t > support_, std::vector< int32_t > task_vector) | |
virtual float64_t | normalize (float64_t value, int32_t idx_lhs, int32_t idx_rhs) |
int32_t | get_num_unique_tasks (std::vector< int32_t > vec) |
virtual | ~CMultitaskKernelPlifNormalizer () |
void | update_cache () |
float64_t | compute_task_similarity (int32_t task_a, int32_t task_b) |
virtual std::vector< int32_t > | get_task_vector_lhs () const |
virtual void | set_task_vector_lhs (std::vector< int32_t > vec) |
virtual std::vector< int32_t > | get_task_vector_rhs () const |
virtual void | set_task_vector_rhs (std::vector< int32_t > vec) |
virtual void | set_task_vector (std::vector< int32_t > vec) |
float64_t | get_task_distance (int32_t task_lhs, int32_t task_rhs) |
void | set_task_distance (int32_t task_lhs, int32_t task_rhs, float64_t distance) |
float64_t | get_task_similarity (int32_t task_lhs, int32_t task_rhs) |
void | set_task_similarity (int32_t task_lhs, int32_t task_rhs, float64_t similarity) |
float64_t | get_beta (int32_t idx) |
void | set_beta (int32_t idx, float64_t weight) |
int32_t | get_num_betas () |
virtual const char * | get_name () const |
CMultitaskKernelPlifNormalizer * | KernelNormalizerToMultitaskKernelPlifNormalizer (CKernelNormalizer *n) |
virtual bool | init (CKernel *k) |
virtual float64_t | normalize_lhs (float64_t value, int32_t idx_lhs) |
virtual float64_t | normalize_rhs (float64_t value, int32_t idx_rhs) |
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 () |
void | unset_generic () |
virtual void | print_serializable (const char *prefix="") |
virtual bool | save_serializable (CSerializableFile *file, const char *prefix="", int32_t param_version=VERSION_PARAMETER) |
virtual bool | load_serializable (CSerializableFile *file, const char *prefix="", int32_t param_version=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_parameter_dictionary (CMap< TParameter *, CSGObject * > &dict) |
Public Attributes | |
SGIO * | io |
Parallel * | parallel |
Version * | version |
Parameter * | m_parameters |
Parameter * | m_model_selection_parameters |
ParameterMap * | m_parameter_map |
uint32_t | m_hash |
Protected Member Functions | |
virtual void | register_params () |
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) |
virtual bool | update_parameter_hash () |
Protected Attributes | |
int32_t | num_tasks |
int32_t | num_tasksqr |
std::vector< int32_t > | task_vector_lhs |
std::vector< int32_t > | task_vector_rhs |
std::vector< float64_t > | distance_matrix |
std::vector< float64_t > | similarity_matrix |
int32_t | num_betas |
std::vector< float64_t > | betas |
std::vector< float64_t > | support |
float64_t | scale |
ENormalizerType | m_type |
default constructor
Definition at line 30 of file MultitaskKernelPlifNormalizer.h.
CMultitaskKernelPlifNormalizer | ( | std::vector< float64_t > | support_, | |
std::vector< int32_t > | task_vector | |||
) |
constructor
Definition at line 39 of file MultitaskKernelPlifNormalizer.h.
virtual ~CMultitaskKernelPlifNormalizer | ( | ) | [virtual] |
default destructor
Definition at line 116 of file MultitaskKernelPlifNormalizer.h.
void build_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.
dict | dictionary of parameters to be built. |
Definition at line 1201 of file SGObject.cpp.
float64_t compute_task_similarity | ( | int32_t | task_a, | |
int32_t | task_b | |||
) |
derive similarity from distance with plif
Definition at line 141 of file MultitaskKernelPlifNormalizer.h.
virtual CSGObject* deep_copy | ( | ) | const [virtual, inherited] |
A deep copy. All the instance variables will also be copied.
Definition at line 131 of file SGObject.h.
float64_t get_beta | ( | int32_t | idx | ) | [virtual] |
idx | index of MKL weight to get |
Implements CMultitaskKernelMklNormalizer.
Definition at line 281 of file MultitaskKernelPlifNormalizer.h.
SGIO * get_global_io | ( | ) | [inherited] |
Parallel * get_global_parallel | ( | ) | [inherited] |
Version * get_global_version | ( | ) | [inherited] |
SGStringList< char > get_modelsel_names | ( | ) | [inherited] |
Definition at line 1108 of file SGObject.cpp.
char * get_modsel_param_descr | ( | const char * | param_name | ) | [inherited] |
Returns description of a given parameter string, if it exists. SG_ERROR otherwise
param_name | name of the parameter |
Definition at line 1132 of file SGObject.cpp.
index_t get_modsel_param_index | ( | const char * | param_name | ) | [inherited] |
Returns index of model selection parameter with provided index
param_name | name of model selection parameter |
Definition at line 1145 of file SGObject.cpp.
virtual const char* get_name | ( | ) | const [virtual] |
Reimplemented from CMultitaskKernelMklNormalizer.
Definition at line 313 of file MultitaskKernelPlifNormalizer.h.
ENormalizerType get_normalizer_type | ( | ) | [inherited] |
getter for normalizer type
Definition at line 100 of file KernelNormalizer.h.
int32_t get_num_betas | ( | ) | [virtual] |
Implements CMultitaskKernelMklNormalizer.
Definition at line 304 of file MultitaskKernelPlifNormalizer.h.
int32_t get_num_unique_tasks | ( | std::vector< int32_t > | vec | ) |
helper routine
vec | vector with containing task_id for each example |
Definition at line 99 of file MultitaskKernelPlifNormalizer.h.
float64_t get_task_distance | ( | 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 221 of file MultitaskKernelPlifNormalizer.h.
float64_t get_task_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 252 of file MultitaskKernelPlifNormalizer.h.
virtual std::vector<int32_t> get_task_vector_lhs | ( | ) | const [virtual] |
Definition at line 186 of file MultitaskKernelPlifNormalizer.h.
virtual std::vector<int32_t> get_task_vector_rhs | ( | ) | const [virtual] |
Definition at line 198 of file MultitaskKernelPlifNormalizer.h.
virtual bool init | ( | CKernel * | k | ) | [virtual, inherited] |
initialization of the normalizer
k | kernel |
Implements CKernelNormalizer.
Definition at line 41 of file MultitaskKernelMklNormalizer.h.
bool is_generic | ( | EPrimitiveType * | generic | ) | const [virtual, inherited] |
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 278 of file SGObject.cpp.
CMultitaskKernelPlifNormalizer* KernelNormalizerToMultitaskKernelPlifNormalizer | ( | CKernelNormalizer * | n | ) |
casts kernel normalizer to multitask kernel plif normalizer
n | kernel normalizer to cast |
Definition at line 321 of file MultitaskKernelPlifNormalizer.h.
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)
file_version | parameter version of the file | |
current_version | version from which mapping begins (you want to use VERSION_PARAMETER for this in most cases) | |
file | file to load from | |
prefix | prefix for members |
Definition at line 679 of file SGObject.cpp.
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
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 523 of file SGObject.cpp.
bool load_serializable | ( | CSerializableFile * | file, | |
const char * | prefix = "" , |
|||
int32_t | param_version = VERSION_PARAMETER | |||
) | [virtual, inherited] |
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) |
Reimplemented in CModelSelectionParameters.
Definition at line 354 of file SGObject.cpp.
void load_serializable_post | ( | ) | throw (ShogunException) [protected, virtual, inherited] |
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 CLinearHMM, CAlphabet, CANOVAKernel, CCircularKernel, CExponentialKernel, CGaussianKernel, CInverseMultiQuadricKernel, CKernel, CWeightedDegreePositionStringKernel, and CList.
Definition at line 1033 of file SGObject.cpp.
void load_serializable_pre | ( | ) | throw (ShogunException) [protected, virtual, inherited] |
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. |
Definition at line 1028 of file SGObject.cpp.
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
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 717 of file SGObject.cpp.
TParameter * migrate | ( | DynArray< TParameter * > * | param_base, | |
const SGParamInfo * | target | |||
) | [protected, virtual, inherited] |
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 923 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 74 of file MultitaskKernelPlifNormalizer.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.
Reimplemented in CMultitaskKernelTreeNormalizer.
Definition at line 78 of file MultitaskKernelMklNormalizer.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.
Reimplemented in CMultitaskKernelTreeNormalizer.
Definition at line 88 of file MultitaskKernelMklNormalizer.h.
void one_to_one_migration_prepare | ( | DynArray< TParameter * > * | param_base, | |
const SGParamInfo * | target, | |||
TParameter *& | replacement, | |||
TParameter *& | to_migrate, | |||
char * | old_name = NULL | |||
) | [protected, virtual, inherited] |
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 864 of file SGObject.cpp.
void print_modsel_params | ( | ) | [inherited] |
prints all parameter registered for model selection and their type
Definition at line 1084 of file SGObject.cpp.
void print_serializable | ( | const char * | prefix = "" |
) | [virtual, inherited] |
prints registered parameters out
prefix | prefix for members |
Definition at line 290 of file SGObject.cpp.
virtual void register_params | ( | ) | [protected, virtual] |
register the parameters
Reimplemented from CKernelNormalizer.
Definition at line 329 of file MultitaskKernelPlifNormalizer.h.
bool save_serializable | ( | CSerializableFile * | file, | |
const char * | prefix = "" , |
|||
int32_t | param_version = VERSION_PARAMETER | |||
) | [virtual, inherited] |
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) |
Reimplemented in CModelSelectionParameters.
Definition at line 296 of file SGObject.cpp.
void save_serializable_post | ( | ) | throw (ShogunException) [protected, virtual, inherited] |
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 1043 of file SGObject.cpp.
void save_serializable_pre | ( | ) | throw (ShogunException) [protected, virtual, inherited] |
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.
Definition at line 1038 of file SGObject.cpp.
void set_beta | ( | int32_t | idx, | |
float64_t | weight | |||
) | [virtual] |
idx | index of MKL weight to set | |
weight | MKL weight to set |
Implements CMultitaskKernelMklNormalizer.
Definition at line 292 of file MultitaskKernelPlifNormalizer.h.
void set_generic< floatmax_t > | ( | ) | [inherited] |
set generic type to T
void set_global_io | ( | SGIO * | io | ) | [inherited] |
void set_global_parallel | ( | Parallel * | parallel | ) | [inherited] |
set the parallel object
parallel | parallel object to use |
Definition at line 230 of file SGObject.cpp.
void set_global_version | ( | Version * | version | ) | [inherited] |
set the version object
version | version object to use |
Definition at line 265 of file SGObject.cpp.
void set_normalizer_type | ( | ENormalizerType | type | ) | [inherited] |
setter for normalizer type
type | type of normalizer |
Definition at line 108 of file KernelNormalizer.h.
void set_task_distance | ( | int32_t | task_lhs, | |
int32_t | task_rhs, | |||
float64_t | distance | |||
) |
task_lhs | task_id on left hand side | |
task_rhs | task_id on right hand side | |
distance | distance between tasks |
Definition at line 236 of file MultitaskKernelPlifNormalizer.h.
void set_task_similarity | ( | int32_t | task_lhs, | |
int32_t | task_rhs, | |||
float64_t | similarity | |||
) |
task_lhs | task_id on left hand side | |
task_rhs | task_id on right hand side | |
similarity | similarity between tasks |
Definition at line 267 of file MultitaskKernelPlifNormalizer.h.
virtual void set_task_vector | ( | std::vector< int32_t > | vec | ) | [virtual] |
vec | task vector with containing task_id for each example |
Definition at line 210 of file MultitaskKernelPlifNormalizer.h.
virtual void set_task_vector_lhs | ( | std::vector< int32_t > | vec | ) | [virtual] |
vec | task vector with containing task_id for each example |
Definition at line 192 of file MultitaskKernelPlifNormalizer.h.
virtual void set_task_vector_rhs | ( | std::vector< int32_t > | vec | ) | [virtual] |
vec | task vector with containing task_id for each example |
Definition at line 204 of file MultitaskKernelPlifNormalizer.h.
virtual CSGObject* shallow_copy | ( | ) | const [virtual, inherited] |
A shallow copy. All the SGObject instance variables will be simply assigned and SG_REF-ed.
Reimplemented in CGaussianKernel.
Definition at line 122 of file SGObject.h.
void unset_generic | ( | ) | [inherited] |
unset generic type
this has to be called in classes specializing a template class
Definition at line 285 of file SGObject.cpp.
void update_cache | ( | ) |
update cache
Definition at line 122 of file MultitaskKernelPlifNormalizer.h.
bool update_parameter_hash | ( | ) | [protected, virtual, inherited] |
Updates the hash of current parameter combination.
Definition at line 237 of file SGObject.cpp.
weights
Definition at line 360 of file MultitaskKernelPlifNormalizer.h.
std::vector<float64_t> distance_matrix [protected] |
MxM matrix encoding distance between tasks
Definition at line 351 of file MultitaskKernelPlifNormalizer.h.
io
Definition at line 462 of file SGObject.h.
uint32_t m_hash [inherited] |
Hash of parameter values
Definition at line 480 of file SGObject.h.
Parameter* m_model_selection_parameters [inherited] |
model selection parameters
Definition at line 474 of file SGObject.h.
ParameterMap* m_parameter_map [inherited] |
map for different parameter versions
Definition at line 477 of file SGObject.h.
Parameter* m_parameters [inherited] |
parameters
Definition at line 471 of file SGObject.h.
ENormalizerType m_type [protected, inherited] |
normalizer type
Definition at line 115 of file KernelNormalizer.h.
int32_t num_betas [protected] |
number of weights
Definition at line 357 of file MultitaskKernelPlifNormalizer.h.
int32_t num_tasks [protected] |
number of tasks
Definition at line 340 of file MultitaskKernelPlifNormalizer.h.
int32_t num_tasksqr [protected] |
square of num_tasks -- for registration purpose
Definition at line 342 of file MultitaskKernelPlifNormalizer.h.
parallel
Definition at line 465 of file SGObject.h.
scale constant obtained from k(0,0)
Definition at line 125 of file MultitaskKernelMklNormalizer.h.
std::vector<float64_t> similarity_matrix [protected] |
MxM matrix encoding similarity between tasks
Definition at line 354 of file MultitaskKernelPlifNormalizer.h.
support points
Definition at line 363 of file MultitaskKernelPlifNormalizer.h.
std::vector<int32_t> task_vector_lhs [protected] |
task vector indicating to which task each example on the left hand side belongs
Definition at line 345 of file MultitaskKernelPlifNormalizer.h.
std::vector<int32_t> task_vector_rhs [protected] |
task vector indicating to which task each example on the right hand side belongs
Definition at line 348 of file MultitaskKernelPlifNormalizer.h.
version
Definition at line 468 of file SGObject.h.