Detailed Description

The MultitaskKernel allows Multitask Learning via a modified kernel function based on taxonomy.

Definition at line 366 of file MultitaskKernelTreeNormalizer.h.

Inheritance diagram for CMultitaskKernelTreeNormalizer:

Public Member Functions
	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)
Protected Attributes
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

Constructor & Destructor Documentation

CMultitaskKernelTreeNormalizer ( )

default constructor

Definition at line 375 of file MultitaskKernelTreeNormalizer.h.

CMultitaskKernelTreeNormalizer	(	std::vector< std::string >	task_lhs,
		std::vector< std::string >	task_rhs,
		CTaxonomy	tax
	)

default constructor

Parameters:

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

Definition at line 385 of file MultitaskKernelTreeNormalizer.h.

virtual ~CMultitaskKernelTreeNormalizer ( ) [virtual]

default destructor

Definition at line 403 of file MultitaskKernelTreeNormalizer.h.

Member Function Documentation

float64_t get_beta ( int32_t idx ) [virtual]

Parameters:

idx	id of weight

Returns:: weight of node with given id

Implements CMultitaskKernelMklNormalizer.

Definition at line 518 of file MultitaskKernelTreeNormalizer.h.

virtual const char* get_name ( ) const [virtual]

Returns:: object name

Reimplemented from CMultitaskKernelMklNormalizer.

Definition at line 570 of file MultitaskKernelTreeNormalizer.h.

float64_t get_node_similarity	(	int32_t	node_lhs,
		int32_t	node_rhs
	)

Parameters:

node_lhs	node_id on left hand side
node_rhs	node_id on right hand side

Returns:: similarity between nodes

Definition at line 543 of file MultitaskKernelTreeNormalizer.h.

int32_t get_num_betas ( ) [virtual]

Returns:: number of parameters/weights

Implements CMultitaskKernelMklNormalizer.

Definition at line 508 of file MultitaskKernelTreeNormalizer.h.

CMultitaskKernelTreeNormalizer* KernelNormalizerToMultitaskKernelTreeNormalizer ( CKernelNormalizer * n )

casts kernel normalizer to multitask kernel tree normalizer

Parameters:

n	kernel normalizer to cast

Definition at line 578 of file MultitaskKernelTreeNormalizer.h.

virtual float64_t normalize	(	float64_t	value,
		int32_t	idx_lhs,
		int32_t	idx_rhs
	)		`[virtual]`

normalize the kernel value

Parameters:

value	kernel value
idx_lhs	index of left hand side vector
idx_rhs	index of right hand side vector

Implements CKernelNormalizer.

Definition at line 433 of file MultitaskKernelTreeNormalizer.h.

virtual float64_t normalize_lhs	(	float64_t	value,
		int32_t	idx_lhs
	)		`[virtual]`

normalize only the left hand side vector

Parameters:

value	value of a component of the left hand side feature vector
idx_lhs	index of left hand side vector

Reimplemented from CMultitaskKernelMklNormalizer.

Definition at line 454 of file MultitaskKernelTreeNormalizer.h.

virtual float64_t normalize_rhs	(	float64_t	value,
		int32_t	idx_rhs
	)		`[virtual]`

normalize only the right hand side vector

Parameters:

value	value of a component of the right hand side feature vector
idx_rhs	index of right hand side vector

Reimplemented from CMultitaskKernelMklNormalizer.

Definition at line 464 of file MultitaskKernelTreeNormalizer.h.

void set_beta	(	int32_t	idx,
		float64_t	weight
	)		`[virtual]`

Parameters:

idx	id of weight
weight	weight of node with given id

Implements CMultitaskKernelMklNormalizer.

Definition at line 528 of file MultitaskKernelTreeNormalizer.h.

void set_node_similarity	(	int32_t	node_lhs,
		int32_t	node_rhs,
		float64_t	similarity
	)

Parameters:

node_lhs	node_id on left hand side
node_rhs	node_id on right hand side
similarity	similarity between nodes

Definition at line 558 of file MultitaskKernelTreeNormalizer.h.

void set_task_vector ( std::vector< std::string > vec )

Parameters:

vec	task vector with containing task_id for each example

Definition at line 501 of file MultitaskKernelTreeNormalizer.h.

void set_task_vector_lhs ( std::vector< std::string > vec )

Parameters:

vec	task vector with containing task_id for each example

Definition at line 472 of file MultitaskKernelTreeNormalizer.h.

void set_task_vector_rhs ( std::vector< std::string > vec )

Parameters:

vec	task vector with containing task_id for each example

Definition at line 488 of file MultitaskKernelTreeNormalizer.h.

void update_cache ( )

update cache

Definition at line 409 of file MultitaskKernelTreeNormalizer.h.

Member Data Documentation

std::vector<float64_t> dependency_matrix [protected]

MxM matrix encoding similarity between tasks

Definition at line 597 of file MultitaskKernelTreeNormalizer.h.

int32_t num_nodes [protected]

number of tasks

Definition at line 588 of file MultitaskKernelTreeNormalizer.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 591 of file MultitaskKernelTreeNormalizer.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 594 of file MultitaskKernelTreeNormalizer.h.

CTaxonomy taxonomy [protected]

taxonomy

Definition at line 585 of file MultitaskKernelTreeNormalizer.h.

The documentation for this class was generated from the following file:

MultitaskKernelTreeNormalizer.h

Detailed Description

Public Member Functions

Protected Attributes

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation