This class computes the rhythm distance of a given descriptor. More...

Inheritance diagram for gaia2::RhythmDistance:

Public Member Functions
	RhythmDistance (const PointLayout &layout, const ParameterMap &params)

Real	operator() (const Point &p1, const Point &p2, int seg1, int seg2) const
	This function computes the distance between the two given points. More...

Public Member Functions inherited from gaia2::DistanceFunction
	DistanceFunction (const PointLayout &layout, const ParameterMap &params)

const PointLayout &	layout () const

const Region &	checkFixedLength (const Region &region) const
	Checks that the given Region only contains fixed-length descriptors and throws an exception if not. More...

Protected Member Functions
Real	distance (const Real &x, const Real &yi, const QString &t1, const QString &t2) const

Protected Attributes
bool	_fixedLength

int	_index

Real	_alpha

GVarLengthArray< Real, 16 >	_indexRange

GVarLengthArray< Real, 16 >	_alphaWeights

Protected Attributes inherited from gaia2::DistanceFunction
PointLayout	_layout

ParameterMap	_params

Region	_region

Additional Inherited Members
Public Attributes inherited from gaia2::DistanceFunction
QString	name
	Name for the metric, usually the key that was used to instantiate it from the factory.

QStringList	validParams
	List of valid parameters this analyzer accepts. More...

Detailed Description

This class computes the rhythm distance of a given descriptor.

It is defined as $d_{BPM}(X,Y) = \min_{i=1,2,4,6,...}{\alpha_{BPM}^{i-1}|\frac{X_{BPM}}{Y_{BPM}} - i|}, X_{BPM} > Y_{BPM}$ .

Parameters

descriptorName	the names of the descriptor to be used for the computation of the distance. Only accepts real descriptors.
alpha	the `alpha` coefficient (from the formula)
indexRange	the list of indices upon which to iterate.

Member Function Documentation

Real RhythmDistance::operator()	(	const Point &	p1,
		const Point &	p2,
		int	seg1,
		int	seg2
	)		const

virtual

This function computes the distance between the two given points.

It needs to be implemented in each subclass. It takes as optional arguments the number of the segments on which to operate.

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