CSimpleLocalityImprovedStringKernel Class Reference

Inheritance diagram for CSimpleLocalityImprovedStringKernel:

List of all members.

Public Member Functions

CSimpleLocalityImprovedStringKernel (int32_t size, int32_t length, int32_t inner_degree, int32_t outer_degree)

CSimpleLocalityImprovedStringKernel (CStringFeatures< char > *l, CStringFeatures< char > *r, int32_t length, int32_t inner_degree, int32_t outer_degree)

virtual ~CSimpleLocalityImprovedStringKernel ()

virtual bool init (CFeatures *l, CFeatures *r)

virtual void cleanup ()

bool load_init (FILE *src)

bool save_init (FILE *dest)

virtual EKernelType get_kernel_type ()

virtual const char * get_name ()

Protected Member Functions

float64_t compute (int32_t idx_a, int32_t idx_b)

Protected Attributes

int32_t length

int32_t inner_degree

int32_t outer_degree

float64_t * pyramid_weights

Detailed Description

SimpleLocalityImprovedString kernel, is a ``simplified'' and better performing version of the Locality improved kernel.

It can be defined as

$K({\bf x},{\bf x'})=\left(\sum_{i=0}^{T-1}\left(\sum_{j=-l}^{+l}w_jI_{i+j}({\bf x},{\bf x'})\right)^{d_1}\right)^{d_2},$

where $I_i({\bf x},{\bf x'})=1$ if $x_i=x'_i$ and 0 otherwise.

Definition at line 27 of file SimpleLocalityImprovedStringKernel.h.

Constructor & Destructor Documentation

CSimpleLocalityImprovedStringKernel::CSimpleLocalityImprovedStringKernel	(	int32_t	size,
		int32_t	length,
		int32_t	inner_degree,
		int32_t	outer_degree
	)

constructor

Parameters:

	size	cache size
	length	length
	inner_degree	inner degree
	outer_degree	outer degree

Definition at line 17 of file SimpleLocalityImprovedStringKernel.cpp.

CSimpleLocalityImprovedStringKernel::CSimpleLocalityImprovedStringKernel	(	CStringFeatures< char > *	l,
		CStringFeatures< char > *	r,
		int32_t	length,
		int32_t	inner_degree,
		int32_t	outer_degree
	)

constructor

Parameters:

	l	features of left-hand side
	r	features of right-hand side
	length	length
	inner_degree	inner degree
	outer_degree	outer degree

Definition at line 24 of file SimpleLocalityImprovedStringKernel.cpp.

CSimpleLocalityImprovedStringKernel::~CSimpleLocalityImprovedStringKernel ( ) [virtual]

Definition at line 33 of file SimpleLocalityImprovedStringKernel.cpp.

Member Function Documentation

void CSimpleLocalityImprovedStringKernel::cleanup ( ) [virtual]

clean up kernel

Reimplemented from CKernel.

Definition at line 87 of file SimpleLocalityImprovedStringKernel.cpp.

float64_t CSimpleLocalityImprovedStringKernel::compute	(	int32_t	idx_a,
		int32_t	idx_b
	)			`[protected, virtual]`

compute kernel function for features a and b idx_{a,b} denote the index of the feature vectors in the corresponding feature object

Parameters:

	idx_a	index a
	idx_b	index b

Returns:: computed kernel function at indices a,b

Implements CKernel.

Definition at line 192 of file SimpleLocalityImprovedStringKernel.cpp.

virtual EKernelType CSimpleLocalityImprovedStringKernel::get_kernel_type ( ) [virtual]

return what type of kernel we are

Returns:: kernel type SIMPLELOCALITYIMPROVED

Implements CKernel.

Definition at line 83 of file SimpleLocalityImprovedStringKernel.h.

virtual const char* CSimpleLocalityImprovedStringKernel::get_name ( ) [virtual]

return the kernel's name

Returns:: name SimpleLocalityImproved

Implements CKernel.

Definition at line 92 of file SimpleLocalityImprovedStringKernel.h.

bool CSimpleLocalityImprovedStringKernel::init	(	CFeatures *	l,
		CFeatures *	r
	)			`[virtual]`

initialize kernel

Parameters:

	l	features of left-hand side
	r	features of right-hand side

Returns:: if initializing was successful

Reimplemented from CStringKernel< char >.

Definition at line 38 of file SimpleLocalityImprovedStringKernel.cpp.

bool CSimpleLocalityImprovedStringKernel::load_init ( FILE * src ) [virtual]

load kernel init_data

Parameters:

src

file to load from

Returns:: if loading was successful

Implements CKernel.

Definition at line 95 of file SimpleLocalityImprovedStringKernel.cpp.

bool CSimpleLocalityImprovedStringKernel::save_init ( FILE * dest ) [virtual]

save kernel init_data

Parameters:

dest

file to save to

Returns:: if saving was successful

Implements CKernel.

Definition at line 100 of file SimpleLocalityImprovedStringKernel.cpp.

Member Data Documentation

int32_t CSimpleLocalityImprovedStringKernel::inner_degree [protected]

inner degree

Definition at line 128 of file SimpleLocalityImprovedStringKernel.h.

int32_t CSimpleLocalityImprovedStringKernel::length [protected]

length

Definition at line 126 of file SimpleLocalityImprovedStringKernel.h.

int32_t CSimpleLocalityImprovedStringKernel::outer_degree [protected]

outer degree

Definition at line 130 of file SimpleLocalityImprovedStringKernel.h.

float64_t* CSimpleLocalityImprovedStringKernel::pyramid_weights [protected]

pyramid weights

Definition at line 132 of file SimpleLocalityImprovedStringKernel.h.

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


Public Member Functions
	CSimpleLocalityImprovedStringKernel (int32_t size, int32_t length, int32_t inner_degree, int32_t outer_degree)
	CSimpleLocalityImprovedStringKernel (CStringFeatures< char > l, CStringFeatures< char > r, int32_t length, int32_t inner_degree, int32_t outer_degree)
virtual	~CSimpleLocalityImprovedStringKernel ()
virtual bool	init (CFeatures l, CFeatures r)
virtual void	cleanup ()
bool	load_init (FILE *src)
bool	save_init (FILE *dest)
virtual EKernelType	get_kernel_type ()
virtual const char *	get_name ()
Protected Member Functions
float64_t	compute (int32_t idx_a, int32_t idx_b)
Protected Attributes
int32_t	length
int32_t	inner_degree
int32_t	outer_degree
float64_t *	pyramid_weights