shark::RegularizedKernelMatrix< InputType, CacheType > Class Template Reference

Kernel Gram matrix with modified diagonal. More...

#include <shark/LinAlg/RegularizedKernelMatrix.h>

Public Types
typedef Matrix::QpFloatType	QpFloatType

Public Member Functions
	RegularizedKernelMatrix (AbstractKernelFunction< InputType > const &kernelfunction, Data< InputType > const &data, const RealVector &diagModification)

QpFloatType	operator() (std::size_t i, std::size_t j) const
	return a single matrix entry

QpFloatType	entry (std::size_t i, std::size_t j) const
	return a single matrix entry

void	row (std::size_t k, std::size_t start, std::size_t end, QpFloatType *storage) const
	Computes the i-th row of the kernel matrix.

template<class M >
void	matrix (blas::matrix_expression< M, blas::cpu_tag > &storage) const
	Computes the kernel-matrix.

void	flipColumnsAndRows (std::size_t i, std::size_t j)
	swap two variables

std::size_t	size () const
	return the size of the quadratic matrix

unsigned long long	getAccessCount () const
	query the kernel access counter

void	resetAccessCount ()
	reset the kernel access counter

Protected Attributes
Matrix	m_matrix

RealVector	m_diagMod

Detailed Description

template<class InputType, class CacheType>
class shark::RegularizedKernelMatrix< InputType, CacheType >

Kernel Gram matrix with modified diagonal.

: Regularized version of KernelMatrix. The regularization is achieved by adding a vector to the matrix diagonal. In particular, this is useful for support vector machines with 2-norm penalty term.

Definition at line 62 of file RegularizedKernelMatrix.h.

Member Typedef Documentation

◆ QpFloatType

template<class InputType , class CacheType >

typedef Matrix::QpFloatType shark::RegularizedKernelMatrix< InputType, CacheType >::QpFloatType

Definition at line 67 of file RegularizedKernelMatrix.h.

Constructor & Destructor Documentation

◆ RegularizedKernelMatrix()

template<class InputType , class CacheType >

shark::RegularizedKernelMatrix< InputType, CacheType >::RegularizedKernelMatrix	(	AbstractKernelFunction< InputType > const &	kernelfunction,
		Data< InputType > const &	data,
		const RealVector &	diagModification
	)

inline

Constructor

Parameters

kernelfunction	kernel function
data	data to evaluate the kernel function
diagModification	vector d of diagonal modifiers

Definition at line 73 of file RegularizedKernelMatrix.h.

References shark::RegularizedKernelMatrix< InputType, CacheType >::size(), and SIZE_CHECK.

Member Function Documentation

◆ entry()

template<class InputType , class CacheType >

QpFloatType shark::RegularizedKernelMatrix< InputType, CacheType >::entry	(	std::size_t	i,
		std::size_t	j
	)		const

inline

return a single matrix entry

Definition at line 86 of file RegularizedKernelMatrix.h.

References shark::RegularizedKernelMatrix< InputType, CacheType >::m_diagMod, and shark::RegularizedKernelMatrix< InputType, CacheType >::m_matrix.

Referenced by shark::RegularizedKernelMatrix< InputType, CacheType >::operator()().

◆ flipColumnsAndRows()

template<class InputType , class CacheType >

void shark::RegularizedKernelMatrix< InputType, CacheType >::flipColumnsAndRows	(	std::size_t	i,
		std::size_t	j
	)

inline

swap two variables

Definition at line 117 of file RegularizedKernelMatrix.h.

References shark::KernelMatrix< InputType, CacheType >::flipColumnsAndRows(), shark::RegularizedKernelMatrix< InputType, CacheType >::m_diagMod, and shark::RegularizedKernelMatrix< InputType, CacheType >::m_matrix.

◆ getAccessCount()

template<class InputType , class CacheType >

unsigned long long shark::RegularizedKernelMatrix< InputType, CacheType >::getAccessCount ( ) const

inline

query the kernel access counter

Definition at line 127 of file RegularizedKernelMatrix.h.

References shark::KernelMatrix< InputType, CacheType >::getAccessCount(), and shark::RegularizedKernelMatrix< InputType, CacheType >::m_matrix.

Referenced by shark::SquaredHingeCSvmTrainer< InputType, CacheType >::train().

◆ matrix()

template<class InputType , class CacheType >

template<class M >

void shark::RegularizedKernelMatrix< InputType, CacheType >::matrix ( blas::matrix_expression< M, blas::cpu_tag > & storage ) const

inline

Computes the kernel-matrix.

Definition at line 107 of file RegularizedKernelMatrix.h.

References shark::RegularizedKernelMatrix< InputType, CacheType >::m_diagMod, shark::RegularizedKernelMatrix< InputType, CacheType >::m_matrix, shark::KernelMatrix< InputType, CacheType >::matrix(), and shark::RegularizedKernelMatrix< InputType, CacheType >::size().

◆ operator()()

template<class InputType , class CacheType >

QpFloatType shark::RegularizedKernelMatrix< InputType, CacheType >::operator()	(	std::size_t	i,
		std::size_t	j
	)		const

inline

return a single matrix entry

Definition at line 82 of file RegularizedKernelMatrix.h.

References shark::RegularizedKernelMatrix< InputType, CacheType >::entry().

◆ resetAccessCount()

template<class InputType , class CacheType >

void shark::RegularizedKernelMatrix< InputType, CacheType >::resetAccessCount ( )

inline

reset the kernel access counter

Definition at line 131 of file RegularizedKernelMatrix.h.

References shark::RegularizedKernelMatrix< InputType, CacheType >::m_matrix, and shark::KernelMatrix< InputType, CacheType >::resetAccessCount().

◆ row()

template<class InputType , class CacheType >

void shark::RegularizedKernelMatrix< InputType, CacheType >::row	(	std::size_t	k,
		std::size_t	start,
		std::size_t	end,
		QpFloatType *	storage
	)		const

inline

Computes the i-th row of the kernel matrix.

The entries start,...,end of the i-th row are computed and stored in storage. There must be enough room for this operation preallocated.

Definition at line 97 of file RegularizedKernelMatrix.h.

References shark::RegularizedKernelMatrix< InputType, CacheType >::m_diagMod, shark::RegularizedKernelMatrix< InputType, CacheType >::m_matrix, and shark::KernelMatrix< InputType, CacheType >::row().

◆ size()

template<class InputType , class CacheType >

std::size_t shark::RegularizedKernelMatrix< InputType, CacheType >::size ( ) const

inline

return the size of the quadratic matrix

Definition at line 123 of file RegularizedKernelMatrix.h.

References shark::RegularizedKernelMatrix< InputType, CacheType >::m_matrix, and shark::KernelMatrix< InputType, CacheType >::size().

Referenced by shark::RegularizedKernelMatrix< InputType, CacheType >::matrix(), and shark::RegularizedKernelMatrix< InputType, CacheType >::RegularizedKernelMatrix().

Member Data Documentation

◆ m_diagMod

template<class InputType , class CacheType >

RealVector shark::RegularizedKernelMatrix< InputType, CacheType >::m_diagMod

protected

Definition at line 136 of file RegularizedKernelMatrix.h.

Referenced by shark::RegularizedKernelMatrix< InputType, CacheType >::entry(), shark::RegularizedKernelMatrix< InputType, CacheType >::flipColumnsAndRows(), shark::RegularizedKernelMatrix< InputType, CacheType >::matrix(), and shark::RegularizedKernelMatrix< InputType, CacheType >::row().

◆ m_matrix

template<class InputType , class CacheType >

Matrix shark::RegularizedKernelMatrix< InputType, CacheType >::m_matrix

protected

Definition at line 135 of file RegularizedKernelMatrix.h.

Referenced by shark::RegularizedKernelMatrix< InputType, CacheType >::entry(), shark::RegularizedKernelMatrix< InputType, CacheType >::flipColumnsAndRows(), shark::RegularizedKernelMatrix< InputType, CacheType >::getAccessCount(), shark::RegularizedKernelMatrix< InputType, CacheType >::matrix(), shark::RegularizedKernelMatrix< InputType, CacheType >::resetAccessCount(), shark::RegularizedKernelMatrix< InputType, CacheType >::row(), and shark::RegularizedKernelMatrix< InputType, CacheType >::size().

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

include/shark/LinAlg/RegularizedKernelMatrix.h