Ipopt::MinC_1NrmRestorationPhase Class Reference

Restoration Phase that minimizes the 1-norm of the constraint violation - using the interior point method (Ipopt). More...

#include <IpRestoMinC_1Nrm.hpp>

Inheritance diagram for Ipopt::MinC_1NrmRestorationPhase:

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Collaboration diagram for Ipopt::MinC_1NrmRestorationPhase:

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List of all members.

Public Member Functions
virtual bool	InitializeImpl (const OptionsList &options, const std::string &prefix)
	Overloaded from AlgorithmStrategy case class.
Constructors/Destructors

	MinC_1NrmRestorationPhase (IpoptAlgorithm &resto_alg, const SmartPtr< EqMultiplierCalculator > &eq_mult_calculator)
	Constructor, taking strategy objects.
virtual	~MinC_1NrmRestorationPhase ()
	Default destructor.
Static Public Member Functions


static void	RegisterOptions (SmartPtr< RegisteredOptions > roptions)
	Methods for IpoptType.
Protected Member Functions
virtual bool	PerformRestoration ()
	Overloaded method from RestorationPhase.
Private Member Functions
Default Compiler Generated Methods (Hidden to avoid
implicit creation/calling). These methods are not implemented and we do not want the compiler to implement them for us, so we declare them private and do not define them. This ensures that they will not be implicitly created/called.
	MinC_1NrmRestorationPhase ()
	Default Constructor.
	MinC_1NrmRestorationPhase (const MinC_1NrmRestorationPhase &)
	Copy Constructor.
void	operator= (const MinC_1NrmRestorationPhase &)
	Overloaded Equals Operator.
Auxilliary methods

void	ComputeBoundMultiplierStep (Vector &delta_z, const Vector &curr_z, const Vector &curr_slack, const Vector &trial_slack)
	Method for computing "primal-dual" step in bound multipliers, given step in slacks.
Private Attributes
SmartPtr< OptionsList >	resto_options_
	Copy of original options, which is required to initialize the Ipopt algorithm strategy object before restoration phase is started.
Index	count_restorations_
	Counter for the number of time that PerformRestoration is called.
Strategy objects

SmartPtr< IpoptAlgorithm >	resto_alg_
SmartPtr< EqMultiplierCalculator >	eq_mult_calculator_
Algorithmic parameters

Number	constr_mult_reset_threshold_
	Maximal allowed value of a bound multiplier after restoration phase.
Number	bound_mult_reset_threshold_
	Maximal allowed value of a bound multiplier after restoration phase.
bool	expect_infeasible_problem_
	Indicates whether problem can be expected to be infeasible.
Number	constr_viol_tol_
	Constraint violation tolerance.

Detailed Description

Restoration Phase that minimizes the 1-norm of the constraint violation - using the interior point method (Ipopt).

Definition at line 22 of file IpRestoMinC_1Nrm.hpp.

Constructor & Destructor Documentation

Ipopt::MinC_1NrmRestorationPhase::MinC_1NrmRestorationPhase	(	IpoptAlgorithm &	resto_alg,
		const SmartPtr< EqMultiplierCalculator > &	eq_mult_calculator
	)

Constructor, taking strategy objects.

The resto_alg strategy object is the restoration phase Ipopt algorithm. The eq_mult_calculator is used to reinitialize the equality constraint multipliers after the restoration phase algorithm has finished - unless it is NULL, in which case the multipliers are set to 0.

virtual Ipopt::MinC_1NrmRestorationPhase::~MinC_1NrmRestorationPhase ( ) [virtual]

Default destructor.

Ipopt::MinC_1NrmRestorationPhase::MinC_1NrmRestorationPhase ( ) [private]

Default Constructor.

Ipopt::MinC_1NrmRestorationPhase::MinC_1NrmRestorationPhase ( const MinC_1NrmRestorationPhase & ) [private]

Copy Constructor.

Member Function Documentation

virtual bool Ipopt::MinC_1NrmRestorationPhase::InitializeImpl	(	const OptionsList &	options,
		const std::string &	prefix
	)			`[virtual]`

Overloaded from AlgorithmStrategy case class.

Implements Ipopt::RestorationPhase.

static void Ipopt::MinC_1NrmRestorationPhase::RegisterOptions ( SmartPtr< RegisteredOptions > roptions ) [static]

Methods for IpoptType.

virtual bool Ipopt::MinC_1NrmRestorationPhase::PerformRestoration ( ) [protected, virtual]

Overloaded method from RestorationPhase.

Implements Ipopt::RestorationPhase.

void Ipopt::MinC_1NrmRestorationPhase::operator= ( const MinC_1NrmRestorationPhase & ) [private]

Overloaded Equals Operator.

Reimplemented from Ipopt::RestorationPhase.

void Ipopt::MinC_1NrmRestorationPhase::ComputeBoundMultiplierStep	(	Vector &	delta_z,
		const Vector &	curr_z,
		const Vector &	curr_slack,
		const Vector &	trial_slack
	)			`[private]`