CLinearWordKernel Class Reference

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Detailed Description

Computes the standard linear kernel on dense word (2-byte) valued features.

Formally, it computes

Definition at line 29 of file LinearWordKernel.h.

Inheritance diagram for CLinearWordKernel:

List of all members.

Public Member Functions
	CLinearWordKernel ()
	CLinearWordKernel (CSimpleFeatures< uint16_t > *l, CSimpleFeatures< uint16_t > *r)
virtual	~CLinearWordKernel ()
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)
Protected Member Functions
virtual float64_t	compute (int32_t idx_a, int32_t idx_b)
Protected Attributes
float64_t *	normal

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Constructor & Destructor Documentation

CLinearWordKernel

(

)

constructor

Definition at line 19 of file LinearWordKernel.cpp.

CLinearWordKernel	(	CSimpleFeatures< uint16_t > *	l,
		CSimpleFeatures< uint16_t > *	r
	)

constructor

Parameters:

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

Definition at line 24 of file LinearWordKernel.cpp.

~CLinearWordKernel

(

)

[virtual]

Definition at line 30 of file LinearWordKernel.cpp.

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Member Function Documentation

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

add to normal

Parameters:

	idx	where to add
	weight	what to add

Reimplemented from CKernel.

Definition at line 54 of file LinearWordKernel.cpp.

void cleanup

(

)

[virtual]

clean up kernel

Reimplemented from CKernel.

Definition at line 41 of file LinearWordKernel.cpp.

void clear_normal

(

)

[virtual]

clear normal

Reimplemented from CKernel.

Definition at line 48 of file LinearWordKernel.cpp.

float64_t 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 66 of file LinearWordKernel.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 123 of file LinearWordKernel.cpp.

bool delete_optimization

(

)

[virtual]

delete optimization

Returns:

if deleting was successful

Reimplemented from CKernel.

Definition at line 114 of file LinearWordKernel.cpp.

virtual EKernelType get_kernel_type

(

)

[virtual]

return what type of kernel we are

Returns:

kernel type LINEAR

Implements CKernel.

Definition at line 60 of file LinearWordKernel.h.

virtual const char* get_name

(

)

const [virtual]

return the kernel's name

Returns:

name Linear

Implements CSGObject.

Definition at line 66 of file LinearWordKernel.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 CSimpleKernel< uint16_t >.

Definition at line 35 of file LinearWordKernel.cpp.

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

initialize optimization

Parameters:

	num_suppvec	number of support vectors
	sv_idx	support vector index
	alphas	alphas

Returns:

if initializing was successful

Reimplemented from CKernel.

Definition at line 85 of file LinearWordKernel.cpp.

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Member Data Documentation

float64_t* normal [protected]

normal vector (used in case of optimized kernel)

Definition at line 114 of file LinearWordKernel.h.

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

• LinearWordKernel.h
• LinearWordKernel.cpp