CFirstElementKernelNormalizer Class Reference

Inheritance diagram for CFirstElementKernelNormalizer:

List of all members.

Public Member Functions

CFirstElementKernelNormalizer ()

virtual ~CFirstElementKernelNormalizer ()

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)

Protected Attributes

float64_t scale

scale constant obtained from k(0,0)

Detailed Description

Normalize the kernel by a constant obtained from the first element of the kernel matrix, i.e. $c=k({\bf x},{\bf x})$

$k'(x,x')= \frac{k(x,x')}{c}$

useful if the kernel returns constant elements along the diagonal anyway and all one wants is to scale the kernel down to 1 on the diagonal.

CFirstElementKernelNormalizer::CFirstElementKernelNormalizer ( )

constructor

virtual CFirstElementKernelNormalizer::~CFirstElementKernelNormalizer ( ) [virtual]

default destructor

virtual bool CFirstElementKernelNormalizer::init ( CKernel * k ) [virtual]

initialization of the normalizer (if needed)

Parameters:

k

kernel

virtual float64_t CFirstElementKernelNormalizer::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

virtual float64_t CFirstElementKernelNormalizer::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

virtual float64_t CFirstElementKernelNormalizer::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

scale constant obtained from k(0,0)

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


Public Member Functions
	CFirstElementKernelNormalizer ()
virtual	~CFirstElementKernelNormalizer ()
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)
Protected Attributes
float64_t	scale
	scale constant obtained from k(0,0)