Provides an interface to run the projected gradient algorithm. More...

#include <ROL_TypeB_GradientAlgorithm.hpp>

Inheritance diagram for ROL::TypeB::GradientAlgorithm< Real >:

Public Member Functions
	GradientAlgorithm (ParameterList &list)

void	run (Vector< Real > &x, const Vector< Real > &g, Objective< Real > &obj, BoundConstraint< Real > &bnd, std::ostream &outStream=std::cout) override
	Run algorithm on bound constrained problems (Type-B). This general interface supports the use of dual optimization vector spaces, where the user does not define the dual() method. More...

void	writeHeader (std::ostream &os) const override
	Print iterate header. More...

void	writeName (std::ostream &os) const override
	Print step name. More...

void	writeOutput (std::ostream &os, const bool write_header=false) const override
	Print iterate status. More...

Public Member Functions inherited from ROL::TypeB::Algorithm< Real >
virtual	~Algorithm ()

	Algorithm ()
	Constructor, given a step and a status test. More...

void	setStatusTest (const Ptr< StatusTest< Real >> &status, const bool combineStatus=false)

virtual void	run (Problem< Real > &problem, std::ostream &outStream=std::cout)
	Run algorithm on bound constrained problems (Type-B). This is the primary Type-B interface. More...

virtual void	run (Vector< Real > &x, Objective< Real > &obj, BoundConstraint< Real > &bnd, std::ostream &outStream=std::cout)
	Run algorithm on bound constrained problems (Type-B). This is the primary Type-B interface. More...

virtual void	run (Vector< Real > &x, Objective< Real > &obj, BoundConstraint< Real > &bnd, Constraint< Real > &linear_econ, Vector< Real > &linear_emul, std::ostream &outStream=std::cout)
	Run algorithm on bound constrained problems with explicit linear constraints (Type-B). This is the primary Type-B with explicit linear constraints interface. More...

virtual void	run (Vector< Real > &x, const Vector< Real > &g, Objective< Real > &obj, BoundConstraint< Real > &bnd, Constraint< Real > &linear_econ, Vector< Real > &linear_emul, const Vector< Real > &linear_eres, std::ostream &outStream=std::cout)
	Run algorithm on bound constrained problems with explicit linear constraints (Type-B). This general interface supports the use of dual optimization vector spaces, where the user does not define the dual() method. More...

virtual void	run (Vector< Real > &x, Objective< Real > &obj, BoundConstraint< Real > &bnd, Constraint< Real > &linear_icon, Vector< Real > &linear_imul, BoundConstraint< Real > &linear_ibnd, std::ostream &outStream=std::cout)
	Run algorithm on bound constrained problems with explicit linear constraints (Type-B). This is the primary Type-B with explicit linear constraints interface. More...

virtual void	run (Vector< Real > &x, const Vector< Real > &g, Objective< Real > &obj, BoundConstraint< Real > &bnd, Constraint< Real > &linear_icon, Vector< Real > &linear_imul, BoundConstraint< Real > &linear_ibnd, const Vector< Real > &linear_ires, std::ostream &outStream=std::cout)
	Run algorithm on bound constrained problems with explicit linear constraints (Type-B). This general interface supports the use of dual optimization vector spaces, where the user does not define the dual() method. More...

virtual void	run (Vector< Real > &x, Objective< Real > &obj, BoundConstraint< Real > &bnd, Constraint< Real > &linear_econ, Vector< Real > &linear_emul, Constraint< Real > &linear_icon, Vector< Real > &linear_imul, BoundConstraint< Real > &linear_ibnd, std::ostream &outStream=std::cout)
	Run algorithm on bound constrained problems with explicit linear constraints (Type-B). This is the primary Type-B with explicit linear constraints interface. More...

virtual void	run (Vector< Real > &x, const Vector< Real > &g, Objective< Real > &obj, BoundConstraint< Real > &bnd, Constraint< Real > &linear_econ, Vector< Real > &linear_emul, const Vector< Real > &linear_eres, Constraint< Real > &linear_icon, Vector< Real > &linear_imul, BoundConstraint< Real > &linear_ibnd, const Vector< Real > &linear_ires, std::ostream &outStream=std::cout)
	Run algorithm on bound constrained problems with explicit linear constraints (Type-B). This general interface supports the use of dual optimization vector spaces, where the user does not define the dual() method. More...

virtual void	writeExitStatus (std::ostream &os) const

Ptr< const AlgorithmState< Real > >	getState () const

void	reset ()

Private Member Functions
void	initialize (Vector< Real > &x, const Vector< Real > &g, Objective< Real > &obj, BoundConstraint< Real > &bnd, std::ostream &outStream=std::cout)

Private Attributes
int	maxit_

Real	alpha0_

Real	alpha0bnd_

Real	rhodec_

Real	rhoinc_

Real	c1_

Real	maxAlpha_

bool	useralpha_

bool	usePrevAlpha_

bool	useAdapt_

bool	normAlpha_

int	verbosity_

bool	writeHeader_

Additional Inherited Members
Protected Member Functions inherited from ROL::TypeB::Algorithm< Real >
void	initialize (const Vector< Real > &x, const Vector< Real > &g)

Real	optimalityCriterion (const Vector< Real > &x, const Vector< Real > &g, Vector< Real > &primal, std::ostream &outStream=std::cout) const

Protected Attributes inherited from ROL::TypeB::Algorithm< Real >
const Ptr< CombinedStatusTest < Real > >	status_

const Ptr< AlgorithmState< Real > >	state_

Ptr< PolyhedralProjection< Real > >	proj_

Detailed Description

template<typename Real>
class ROL::TypeB::GradientAlgorithm< Real >

Provides an interface to run the projected gradient algorithm.

Definition at line 57 of file ROL_TypeB_GradientAlgorithm.hpp.

Constructor & Destructor Documentation

template<typename Real >

ROL::TypeB::GradientAlgorithm< Real >::GradientAlgorithm ( ParameterList & list )

Definition at line 51 of file ROL_TypeB_GradientAlgorithm_Def.hpp.

Member Function Documentation

template<typename Real >

void ROL::TypeB::GradientAlgorithm< Real >::initialize	(	Vector< Real > &	x,
		const Vector< Real > &	g,
		Objective< Real > &	obj,
		BoundConstraint< Real > &	bnd,
		std::ostream &	outStream = `std::cout`
	)

private

Definition at line 74 of file ROL_TypeB_GradientAlgorithm_Def.hpp.

References ROL::Objective< Real >::gradient(), ROL::Initial, ROL::TypeB::Algorithm< Real >::initialize(), ROL::Revert, ROL::Trial, ROL::Objective< Real >::update(), and ROL::Objective< Real >::value().

template<typename Real >

void ROL::TypeB::GradientAlgorithm< Real >::run	(	Vector< Real > &	x,
		const Vector< Real > &	g,
		Objective< Real > &	obj,
		BoundConstraint< Real > &	bnd,
		std::ostream &	outStream = `std::cout`
	)

overridevirtual

Run algorithm on bound constrained problems (Type-B). This general interface supports the use of dual optimization vector spaces, where the user does not define the dual() method.

Implements ROL::TypeB::Algorithm< Real >.

Definition at line 126 of file ROL_TypeB_GradientAlgorithm_Def.hpp.

References ROL::Accept, ROL::Vector< Real >::clone(), ROL::Objective< Real >::gradient(), ROL::Revert, ROL::Vector< Real >::set(), ROL::Trial, ROL::Objective< Real >::update(), ROL::Objective< Real >::value(), and ROL::TypeB::Algorithm< Real >::writeExitStatus().