GaussianStarKernel Class Reference

Standard multivariate Gaussian kernel. More...

List of all members.

Public Member Functions
double	bandwidth_sq () const
double	bandwidth_sq () const
double	CalcMultiplicativeNormConstant (index_t dims) const
	Multiply densities by this value.
double	CalcMultiplicativeNormConstant (index_t dims) const
	Multiply densities by this value.
double	CalcNormConstant (index_t dims) const
	Divide by this constant when you're done.
double	CalcNormConstant (index_t dims) const
	Divide by this constant when you're done.
double	EvalUnnorm (double dist) const
	Evaluates an unnormalized density, given the distance between the kernel's mean and a query point.
double	EvalUnnorm (double dist) const
	Evaluates an unnormalized density, given the distance between the kernel's mean and a query point.
double	EvalUnnormOnSq (double sqdist) const
	Evaluates an unnormalized density, given the square of the distance.
double	EvalUnnormOnSq (double sqdist) const
	Evaluates an unnormalized density, given the square of the distance.
void	Init (double bandwidth_in, index_t dims)
	Initializes to a specific bandwidth.
void	Init (double bandwidth_in, index_t dims)
	Initializes to a specific bandwidth.
DRange	RangeUnnormOnSq (const DRange &range) const
	Unnormalized range on a range of squared distances.
DRange	RangeUnnormOnSq (const DRange &range) const
	Unnormalized range on a range of squared distances.
Static Public Attributes
static const bool	HAS_CUTOFF = false

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Detailed Description

Standard multivariate Gaussian kernel.

Definition at line 128 of file kernel.h.

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Member Function Documentation

double GaussianStarKernel::CalcMultiplicativeNormConstant

(

index_t

dims

)

const [inline]

Multiply densities by this value.

Definition at line 213 of file kernel.h.

References CalcNormConstant().

double GaussianStarKernel::CalcMultiplicativeNormConstant

(

index_t

dims

)

const [inline]

Multiply densities by this value.

Definition at line 213 of file kernel.h.

References CalcNormConstant().

double GaussianStarKernel::CalcNormConstant

(

index_t

dims

)

const [inline]

Divide by this constant when you're done.

Deprecated:

-- this function is very confusing

Definition at line 206 of file kernel.h.

References math::PI_2.

double GaussianStarKernel::CalcNormConstant

(

index_t

dims

)

const [inline]

Divide by this constant when you're done.

Deprecated:

-- this function is very confusing

Definition at line 206 of file kernel.h.

References math::PI_2.

Referenced by CalcMultiplicativeNormConstant().

double GaussianStarKernel::EvalUnnorm

(

double

dist

)

const [inline]

Evaluates an unnormalized density, given the distance between the kernel's mean and a query point.

Definition at line 169 of file kernel.h.

References EvalUnnormOnSq().

double GaussianStarKernel::EvalUnnorm

(

double

dist

)

const [inline]

Evaluates an unnormalized density, given the distance between the kernel's mean and a query point.

Definition at line 169 of file kernel.h.

References EvalUnnormOnSq().

double GaussianStarKernel::EvalUnnormOnSq

(

double

sqdist

)

const [inline]

Evaluates an unnormalized density, given the square of the distance.

Definition at line 177 of file kernel.h.

double GaussianStarKernel::EvalUnnormOnSq

(

double

sqdist

)

const [inline]

Evaluates an unnormalized density, given the square of the distance.

Definition at line 177 of file kernel.h.

Referenced by EvalUnnorm(), Init(), and RangeUnnormOnSq().

void GaussianStarKernel::Init	(	double	bandwidth_in,
		index_t	dims
	)			[inline]

Initializes to a specific bandwidth.

Parameters:

bandwidth_in

the standard deviation sigma

Definition at line 157 of file kernel.h.

References EvalUnnormOnSq(), and math::LN_2.

void GaussianStarKernel::Init	(	double	bandwidth_in,
		index_t	dims
	)			[inline]

Initializes to a specific bandwidth.

Parameters:

bandwidth_in

the standard deviation sigma

Definition at line 157 of file kernel.h.

References EvalUnnormOnSq(), and math::LN_2.

DRange GaussianStarKernel::RangeUnnormOnSq

(

const DRange &

range

)

const [inline]

Unnormalized range on a range of squared distances.

! TODO explain

Definition at line 185 of file kernel.h.

References EvalUnnormOnSq(), DRange::hi, and DRange::lo.

DRange GaussianStarKernel::RangeUnnormOnSq

(

const DRange &

range

)

const [inline]

Unnormalized range on a range of squared distances.

! TODO explain

Definition at line 185 of file kernel.h.

References EvalUnnormOnSq(), DRange::hi, and DRange::lo.

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

• fastlib/math/kernel.h
• include/fastlib/math/kernel.h