RichExtrapVerification Class Reference

Class for Richardson extrapolation for code and solution verification. More...

Inheritance diagram for RichExtrapVerification:

List of all members.

Public Member Functions
	RichExtrapVerification (ProblemDescDB &problem_db, Model &model)
	constructor
	~RichExtrapVerification ()
	destructor
void	perform_verification ()
	Redefines the core_run() virtual function for the Verification branch.
void	print_results (std::ostream &s)
	print the final iterator results
Private Member Functions
void	estimate_order ()
	perform a single estimation of convOrder using extrapolation()
void	converge_order ()
	iterate using extrapolation() until convOrder stabilizes
void	converge_qoi ()
	iterate using extrapolation() until QOIs stabilize
void	extrapolation (const RealVector &refine_triple, RealMatrix &qoi_triples)
	estimate convOrder from refinement and quantity of interest (QOI) triples
void	extrapolate_result (const RealVector &refine_triple, const RealMatrix &qoi_triples)
	predict the converged value based on the convergence rate and the value of Phi
Private Attributes
unsigned short	studyType
	internal code for extrapolation study type: SUBMETHOD_{CONVERGE_ORDER,CONVERGE_QOI,ESTIMATE_ORDER}
size_t	numFactors
	number of refinement factors defined from active state variables
RealVector	initialCVars
	initial reference values for refinement factors
size_t	factorIndex
	the index of the active factor
Real	refinementRate
	rate of mesh refinement (default = 2.)
RealMatrix	convOrder
	the orders of convergence of the QOIs (numFunctions by numFactors)
RealMatrix	extrapQOI
	the extrapolated value of the QOI (numFunctions by numFactors)
RealMatrix	numErrorQOI
	the numerical uncertainty associated with level of refinement (numFunctions by numFactors)
RealVector	refinementRefPt
	This is a reference point reported for the converged extrapQOI and numErrorQOI. It currently corresponds to the coarsest mesh in the final refinement triple.

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Detailed Description

Class for Richardson extrapolation for code and solution verification.

The RichExtrapVerification class contains several algorithms for performing Richardson extrapolation.

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Member Function Documentation

void print_results

(

std::ostream &

s

)

[virtual]

print the final iterator results

This virtual function provides additional iterator-specific final results outputs beyond the function evaluation summary printed in finalize_run().

Reimplemented from Verification.

References Model::continuous_variable_labels(), RichExtrapVerification::convOrder, Dakota::copy_data(), RichExtrapVerification::extrapQOI, Iterator::iteratedModel, RichExtrapVerification::numErrorQOI, RichExtrapVerification::refinementRate, RichExtrapVerification::refinementRefPt, and Model::response_labels().

void estimate_order

(

)

[private]

perform a single estimation of convOrder using extrapolation()

This algorithm executes a single refinement triple and returns convergence order estimates.

References RichExtrapVerification::extrapolate_result(), RichExtrapVerification::extrapolation(), RichExtrapVerification::extrapQOI, RichExtrapVerification::factorIndex, RichExtrapVerification::initialCVars, RichExtrapVerification::numErrorQOI, RichExtrapVerification::numFactors, Analyzer::numFunctions, RichExtrapVerification::refinementRate, and RichExtrapVerification::refinementRefPt.

Referenced by RichExtrapVerification::perform_verification().

void converge_order

(

)

[private]

iterate using extrapolation() until convOrder stabilizes

This algorithm continues to refine until the convergence order estimate converges.

References Iterator::convergenceTol, RichExtrapVerification::convOrder, Dakota::copy_data(), RichExtrapVerification::extrapolate_result(), RichExtrapVerification::extrapolation(), RichExtrapVerification::extrapQOI, RichExtrapVerification::factorIndex, RichExtrapVerification::initialCVars, Iterator::maxIterations, RichExtrapVerification::numErrorQOI, RichExtrapVerification::numFactors, Analyzer::numFunctions, Iterator::outputLevel, RichExtrapVerification::refinementRate, and RichExtrapVerification::refinementRefPt.

Referenced by RichExtrapVerification::perform_verification().

void converge_qoi

(

)

[private]

iterate using extrapolation() until QOIs stabilize

This algorithm continues to refine until the discretization error lies within a prescribed tolerance.

References Iterator::convergenceTol, RichExtrapVerification::extrapolate_result(), RichExtrapVerification::extrapolation(), RichExtrapVerification::extrapQOI, RichExtrapVerification::factorIndex, RichExtrapVerification::initialCVars, Iterator::maxIterations, RichExtrapVerification::numErrorQOI, RichExtrapVerification::numFactors, Analyzer::numFunctions, Iterator::outputLevel, RichExtrapVerification::refinementRate, and RichExtrapVerification::refinementRefPt.

Referenced by RichExtrapVerification::perform_verification().

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

• RichExtrapVerification.hpp
• RichExtrapVerification.cpp