NystroemMethod< KernelType, PointSelectionPolicy > Class Template Reference

Public Member Functions
	NystroemMethod (const arma::mat &data, KernelType &kernel, const size_t rank)
	Create the NystroemMethod object. More...
void	Apply (arma::mat &output)
	Apply the low-rank factorization to obtain an output matrix G such that K' = G * G^T. More...
void	GetKernelMatrix (const arma::mat *data, arma::mat &miniKernel, arma::mat &semiKernel)
	Construct the kernel matrix with matrix that contains the selected points. More...
void	GetKernelMatrix (const arma::Col< size_t > &selectedPoints, arma::mat &miniKernel, arma::mat &semiKernel)
	Construct the kernel matrix with the selected points. More...

Detailed Description

template<typename KernelType, typename PointSelectionPolicy = KMeansSelection<>>
class mlpack::kernel::NystroemMethod< KernelType, PointSelectionPolicy >

Definition at line 28 of file nystroem_method.hpp.

Constructor & Destructor Documentation

NystroemMethod()

NystroemMethod	(	const arma::mat &	data,
		KernelType &	kernel,
		const size_t	rank
	)

Create the NystroemMethod object.

The constructor here does not really do anything.

Parameters

data	Data matrix.
kernel	Kernel to be used for computation.
rank	Rank to be used for matrix approximation.

Member Function Documentation

Apply()

void Apply

(

arma::mat &

output

)

Apply the low-rank factorization to obtain an output matrix G such that K' = G * G^T.

Parameters

output

Matrix to store kernel approximation into.

Referenced by NystroemKernelRule< KernelType, PointSelectionPolicy >::ApplyKernelMatrix().

GetKernelMatrix() [1/2]

void GetKernelMatrix	(	const arma::mat *	data,
		arma::mat &	miniKernel,
		arma::mat &	semiKernel
	)

Construct the kernel matrix with matrix that contains the selected points.

Parameters

data	Data matrix pointer.
miniKernel	to store the constructed mini-kernel matrix in.
semiKernel	to store the constructed semi-kernel matrix in.

GetKernelMatrix() [2/2]

void GetKernelMatrix	(	const arma::Col< size_t > &	selectedPoints,
		arma::mat &	miniKernel,
		arma::mat &	semiKernel
	)

Construct the kernel matrix with the selected points.

Parameters

selectedPoints	Indices of selected points.
miniKernel	to store the constructed mini-kernel matrix in.
semiKernel	to store the constructed semi-kernel matrix in.

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

• /home/ryan/src/mlpack.org/_src/mlpack-git/src/mlpack/methods/nystroem_method/nystroem_method.hpp