sgpp::datadriven::DMSystemMatrix Class Reference

Class that implements the virtual class base::OperationMatrix for applications for the Systemmatrix. More...

#include <DMSystemMatrix.hpp>

Inheritance diagram for sgpp::datadriven::DMSystemMatrix:

Public Member Functions
	DMSystemMatrix (base::Grid &grid, base::DataMatrix &trainData, std::shared_ptr< base::OperationMatrix > C, double lambdaRegression)
	Std-Constructor.
virtual void	generateb (base::DataVector &classes, base::DataVector &b)
	Generates the right hand side of the classification equation.
virtual void	mult (base::DataVector &alpha, base::DataVector &result)
	starts the Multiplication with the matrix
virtual	~DMSystemMatrix ()
	Std-Destructor.
Public Member Functions inherited from sgpp::datadriven::DMSystemMatrixBase
	DMSystemMatrixBase (base::DataMatrix &trainData, double lambda)
	Std-Constructor.
virtual void	getTimers (double &timeMult, double &computeMult, double &timeMultTrans, double &computeMultTrans)
	gets the timer's values by saving them into call by reference values
virtual void	prepareGrid ()
	forward declaration
virtual void	resetTimers ()
	resets all timers to 0
virtual	~DMSystemMatrixBase ()
	Std-Destructor.
Public Member Functions inherited from sgpp::base::OperationMatrix
	OperationMatrix ()
	Constructor.
virtual	~OperationMatrix ()
	Destructor.

Additional Inherited Members
Protected Attributes inherited from sgpp::datadriven::DMSystemMatrixBase
double	completeTimeMult_
	time needed for Mult
double	completeTimeMultTrans_
	time needed for Mult transposed
double	computeTimeMult_
	time needed only for the computation of mult, interesting on accelerator boards
double	computeTimeMultTrans_
	time needed only for the computation of mult transposed, interesting on accelerator boards
base::DataMatrix	dataset_
	the dataset
double	lambda_
	the lambda, the regularisation parameter
base::SGppStopwatch *	myTimer_
	Stopwatch needed to determine the durations of mult and mult transposed.

Detailed Description

Class that implements the virtual class base::OperationMatrix for applications for the Systemmatrix.

Constructor & Destructor Documentation

DMSystemMatrix()

sgpp::datadriven::DMSystemMatrix::DMSystemMatrix	(	base::Grid &	grid,
		base::DataMatrix &	trainData,
		std::shared_ptr< base::OperationMatrix >	C,
		double	lambdaRegression
	)

Std-Constructor.

Parameters

grid	reference to the sparse grid
trainData	reference to base::DataVector that contains the training data
C	the regression functional
lambdaRegression	the lambda, the regression parameter

References sgpp::op_factory::createOperationMultipleEval(), and sgpp::datadriven::DMSystemMatrixBase::dataset_.

~DMSystemMatrix()

sgpp::datadriven::DMSystemMatrix::~DMSystemMatrix ( )

virtual

Std-Destructor.

Member Function Documentation

generateb()

void sgpp::datadriven::DMSystemMatrix::generateb ( base::DataVector &  classes, base::DataVector &  b  )

virtual

Generates the right hand side of the classification equation.

Parameters

classes	the class information of the training data
b	reference to the vector that will contain the result of the matrix vector multiplication on the rhs

Implements sgpp::datadriven::DMSystemMatrixBase.

References sgpp::op_factory::createOperationMultipleEval(), and sgpp::datadriven::DMSystemMatrixBase::dataset_.

mult()

void sgpp::datadriven::DMSystemMatrix::mult ( base::DataVector &  alpha, base::DataVector &  result  )

virtual

starts the Multiplication with the matrix

Parameters

alpha	DataVector that contains the ansatzfunctions' coefficients
result	DataVector into which the result of the Laplace operation is stored

Implements sgpp::datadriven::DMSystemMatrixBase.

References alpha, sgpp::base::DataVector::axpy(), sgpp::op_factory::createOperationMultipleEval(), sgpp::datadriven::DMSystemMatrixBase::dataset_, sgpp::base::DataMatrix::getNrows(), sgpp::base::DataVector::getSize(), and sgpp::datadriven::DMSystemMatrixBase::lambda_.

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

• datadriven/src/sgpp/datadriven/algorithm/DMSystemMatrix.hpp
• datadriven/src/sgpp/datadriven/algorithm/DMSystemMatrix.cpp