CDiceKernelNormalizer Class Reference

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Detailed Description

DiceKernelNormalizer performs kernel normalization inspired by the Dice coefficient (see http://en.wikipedia.org/wiki/Dice's_coefficient)

Definition at line 26 of file DiceKernelNormalizer.h.

Inheritance diagram for CDiceKernelNormalizer:

List of all members.

Public Member Functions
	CDiceKernelNormalizer (bool use_opt_diag=false)
virtual	~CDiceKernelNormalizer ()
virtual bool	init (CKernel *k)
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)
virtual const char *	get_name () const
bool	alloc_and_compute_diag (CKernel *k, float64_t *&v, int32_t num)
Protected Attributes
float64_t *	diag_lhs
int32_t	num_diag_lhs
float64_t *	diag_rhs
int32_t	num_diag_rhs
bool	use_optimized_diagonal_computation

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Constructor & Destructor Documentation

CDiceKernelNormalizer

(

bool

use_opt_diag = false

)

default constructor

Parameters:

use_opt_diag

- some kernels support faster diagonal compuation via compute_diag(idx), this flag enables this

Definition at line 33 of file DiceKernelNormalizer.h.

virtual ~CDiceKernelNormalizer

(

)

[virtual]

default destructor

Definition at line 47 of file DiceKernelNormalizer.h.

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Member Function Documentation

bool alloc_and_compute_diag	(	CKernel *	k,
		float64_t *&	v,
		int32_t	num
	)

alloc and compute the vector containing the square root of the diagonal elements of this kernel.

Definition at line 125 of file DiceKernelNormalizer.h.

virtual const char* get_name

(

)

const [virtual]

Returns the name of the SGSerializable instance. It MUST BE the CLASS NAME without the prefixed `C'.

Returns:

name of the SGSerializable

Implements CSGObject.

Definition at line 117 of file DiceKernelNormalizer.h.

virtual bool init

(

CKernel *

k

)

[virtual]

initialization of the normalizer

Parameters:

k

kernel

Implements CKernelNormalizer.

Definition at line 55 of file DiceKernelNormalizer.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 85 of file DiceKernelNormalizer.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

Implements CKernelNormalizer.

Definition at line 96 of file DiceKernelNormalizer.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

Implements CKernelNormalizer.

Definition at line 106 of file DiceKernelNormalizer.h.

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Member Data Documentation

float64_t* diag_lhs [protected]

diagonal left-hand side

Definition at line 151 of file DiceKernelNormalizer.h.

float64_t* diag_rhs [protected]

diagonal right-hand side

Definition at line 156 of file DiceKernelNormalizer.h.

int32_t num_diag_lhs [protected]

num diag lhs

Definition at line 153 of file DiceKernelNormalizer.h.

int32_t num_diag_rhs [protected]

num diag rhs

Definition at line 158 of file DiceKernelNormalizer.h.

bool use_optimized_diagonal_computation [protected]

flat if optimized diagonal computation is used

Definition at line 161 of file DiceKernelNormalizer.h.

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

• DiceKernelNormalizer.h