CLinearKernel Class Reference

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Detailed Description

Computes the standard linear kernel on CDotFeatures.

Formally, it computes

Definition at line 31 of file LinearKernel.h.

Inheritance diagram for CLinearKernel:

List of all members.

Public Member Functions
	CLinearKernel ()
	CLinearKernel (CDotFeatures *l, CDotFeatures *r)
virtual	~CLinearKernel ()
virtual bool	init (CFeatures *l, CFeatures *r)
virtual void	cleanup ()
virtual EKernelType	get_kernel_type ()
virtual const char *	get_name () const
virtual bool	init_optimization (int32_t num_suppvec, int32_t *sv_idx, float64_t *alphas)
virtual bool	delete_optimization ()
virtual float64_t	compute_optimized (int32_t idx)
virtual void	clear_normal ()
virtual void	add_to_normal (int32_t idx, float64_t weight)
const float64_t *	get_normal (int32_t &len)
void	get_w (float64_t **dst_w, int32_t *dst_dims)
void	set_w (float64_t *src_w, int32_t src_w_dim)
Protected Attributes
float64_t *	normal
int32_t	normal_length

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Constructor & Destructor Documentation

CLinearKernel

(

)

constructor

Definition at line 20 of file LinearKernel.cpp.

CLinearKernel	(	CDotFeatures *	l,
		CDotFeatures *	r
	)

constructor

Parameters:

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

Definition at line 26 of file LinearKernel.cpp.

~CLinearKernel

(

)

[virtual]

Definition at line 33 of file LinearKernel.cpp.

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Member Function Documentation

void add_to_normal	(	int32_t	idx,
		float64_t	weight
	)			[virtual]

add to normal vector

Parameters:

	idx	where to add
	weight	what to add

Reimplemented from CKernel.

Definition at line 66 of file LinearKernel.cpp.

void cleanup

(

)

[virtual]

clean up kernel

Reimplemented from CKernel.

Definition at line 45 of file LinearKernel.cpp.

void clear_normal

(

)

[virtual]

clear normal vector

Reimplemented from CKernel.

Definition at line 52 of file LinearKernel.cpp.

float64_t compute_optimized

(

int32_t

idx

)

[virtual]

compute optimized

Parameters:

idx

index to compute

Returns:

optimized value at given index

Reimplemented from CKernel.

Definition at line 95 of file LinearKernel.cpp.

bool delete_optimization

(

)

[virtual]

delete optimization

Returns:

if deleting was successful

Reimplemented from CKernel.

Definition at line 85 of file LinearKernel.cpp.

virtual EKernelType get_kernel_type

(

)

[virtual]

return what type of kernel we are

Returns:

kernel type LINEAR

Implements CDotKernel.

Definition at line 62 of file LinearKernel.h.

virtual const char* get_name

(

void

)

const [virtual]

return the kernel's name

Returns:

name Lineaer

Reimplemented from CDotKernel.

Definition at line 68 of file LinearKernel.h.

const float64_t* get_normal

(

int32_t &

len

)

get normal

Parameters:

len

where length of normal vector will be stored

Returns:

normal vector

Definition at line 109 of file LinearKernel.h.

void get_w	(	float64_t **	dst_w,
		int32_t *	dst_dims
	)

get normal vector (swig compatible)

Parameters:

	dst_w	store w in this argument
	dst_dims	dimension of w

Definition at line 128 of file LinearKernel.h.

bool 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 CDotKernel.

Definition at line 38 of file LinearKernel.cpp.

bool init_optimization	(	int32_t	num_suppvec,
		int32_t *	sv_idx,
		float64_t *	alphas
	)			[virtual]

optimizable kernel, i.e. precompute normal vector and as phi(x) = x do scalar product in input space

Parameters:

	num_suppvec	number of support vectors
	sv_idx	support vector index
	alphas	alphas

Returns:

if optimization was successful

Reimplemented from CKernel.

Definition at line 73 of file LinearKernel.cpp.

void set_w	(	float64_t *	src_w,
		int32_t	src_w_dim
	)

set normal vector (swig compatible)

Parameters:

	src_w	new w
	src_w_dim	dimension of new w - must fit dim of lhs

Definition at line 144 of file LinearKernel.h.

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Member Data Documentation

float64_t* normal [protected]

normal vector (used in case of optimized kernel)

Definition at line 153 of file LinearKernel.h.

int32_t normal_length [protected]

length of normal vector

Definition at line 155 of file LinearKernel.h.

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

• LinearKernel.h
• LinearKernel.cpp