Detailed Description

Rational Quadratic kernel.

Formally described as

$K(x,x') = 1 -\frac{\| x-x'\|^2}{\|x-x'\|^2 + coef}$

Definition at line 35 of file RationalQuadraticKernel.h.

Inheritance diagram for CRationalQuadraticKernel:

Public Member Functions
	CRationalQuadraticKernel ()
	CRationalQuadraticKernel (int32_t cache, float64_t coef, CDistance *dist)
	CRationalQuadraticKernel (CFeatures l, CFeatures r, float64_t c, CDistance *dist)
virtual bool	init (CFeatures l, CFeatures r)
virtual EKernelType	get_kernel_type ()
virtual EFeatureType	get_feature_type ()
virtual EFeatureClass	get_feature_class ()
virtual const char *	get_name () const
virtual const float64_t	get_coef () const
void	set_coef (float64_t coef)
virtual	~CRationalQuadraticKernel ()
Protected Member Functions
virtual float64_t	compute (int32_t idx_a, int32_t idx_b)
Protected Attributes
CDistance *	m_distance
	distance to be used
float64_t	m_coef
	coefficient parameter of kernel

Constructor & Destructor Documentation

CRationalQuadraticKernel ( )

default constructor

Definition at line 16 of file RationalQuadraticKernel.cpp.

CRationalQuadraticKernel	(	int32_t	cache,
		float64_t	coef,
		CDistance *	dist
	)

constructor

Parameters:

	cache	size of cache
	coef	kernel parameter coefficient
	dist	distance to be used

Definition at line 21 of file RationalQuadraticKernel.cpp.

CRationalQuadraticKernel	(	CFeatures *	l,
		CFeatures *	r,
		float64_t	c,
		CDistance *	dist
	)

constructor

Parameters:

	l	features left-side
	r	features right-side
	c	kernel parameter coefficient
	dist	distance to be used

Definition at line 29 of file RationalQuadraticKernel.cpp.

~CRationalQuadraticKernel ( ) [virtual]

Definition at line 38 of file RationalQuadraticKernel.cpp.

Member Function Documentation

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

compute kernel for specific feature vectors corresponding to [idx_a] of left-side and [idx_b] of right-side

Parameters:

	idx_a	left-side index
	idx_b	right-side index

Returns:: kernel value

Implements CKernel.

Definition at line 52 of file RationalQuadraticKernel.cpp.

virtual const float64_t get_coef ( ) const [virtual]

Returns:: coef - coefficient parameter of kernel

Definition at line 86 of file RationalQuadraticKernel.h.

virtual EFeatureClass get_feature_class ( ) [virtual]

Returns:: class of features

Implements CKernel.

Definition at line 76 of file RationalQuadraticKernel.h.

virtual EFeatureType get_feature_type ( ) [virtual]

Returns:: type of features

Implements CKernel.

Definition at line 71 of file RationalQuadraticKernel.h.

virtual EKernelType get_kernel_type ( ) [virtual]

Returns:: kernel type

Implements CKernel.

Definition at line 66 of file RationalQuadraticKernel.h.

virtual const char* get_name ( ) const [virtual]

Returns:: name of kernel

Implements CSGObject.

Definition at line 81 of file RationalQuadraticKernel.h.

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

initialize kernel with features

Parameters:

	l	features left-side
	r	features right-side

Returns:: true if successful

Reimplemented from CKernel.

Definition at line 44 of file RationalQuadraticKernel.cpp.

void set_coef ( float64_t coef )

setter for degree parameter

Parameters:

coef

coefficient parameter of kernel

Definition at line 91 of file RationalQuadraticKernel.h.

Member Data Documentation

float64_t m_coef [protected]

coefficient parameter of kernel

Definition at line 113 of file RationalQuadraticKernel.h.

CDistance* m_distance [protected]

distance to be used

Definition at line 110 of file RationalQuadraticKernel.h.

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

CRationalQuadraticKernel Class Reference

Detailed Description

Public Member Functions

Protected Member Functions

Protected Attributes

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation