ClpAmplObjective Class Reference

Ampl Objective Class. More...

#include <ClpAmplObjective.hpp>

Inheritance diagram for ClpAmplObjective:

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Collaboration diagram for ClpAmplObjective:

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List of all members.

Public Member Functions
Stuff

virtual double *	gradient (const ClpSimplex model, const double solution, double &offset, bool refresh, int includeLinear=2)
	Returns gradient.
virtual double	reducedGradient (ClpSimplex model, double region, bool useFeasibleCosts)
	Resize objective.
virtual double	stepLength (ClpSimplex model, const double solution, const double *change, double maximumTheta, double &currentObj, double &predictedObj, double &thetaObj)
	Returns step length which gives minimum of objective for solution + theta * change vector up to maximum theta.
virtual double	objectiveValue (const ClpSimplex model, const double solution) const
	Return objective value (without any ClpModel offset) (model may be NULL).
virtual void	resize (int newNumberColumns)
	Returns gradient.
virtual void	deleteSome (int numberToDelete, const int *which)
	Delete columns in objective.
virtual void	reallyScale (const double *columnScale)
	Scale objective.
virtual int	markNonlinear (char *which)
	Given a zeroed array sets nonlinear columns to 1.
virtual void	newXValues ()
	Say we have new primal solution - so may need to recompute.
Constructors and destructors

	ClpAmplObjective ()
	Default Constructor.
	ClpAmplObjective (void *amplInfo)
	Constructor from ampl info.
	ClpAmplObjective (const ClpAmplObjective &rhs)
	Copy constructor .
ClpAmplObjective &	operator= (const ClpAmplObjective &rhs)
	Assignment operator.
virtual	~ClpAmplObjective ()
	Destructor.
virtual ClpObjective *	clone () const
	Clone.
Gets and sets

double *	linearObjective () const
	Linear objective.
Private Attributes
Private member data
Saved offset
double	offset_
	Ampl info.
void *	amplObjective_
	Ampl info.
double *	objective_
	Objective.
double *	gradient_
	Gradient.

Detailed Description

Ampl Objective Class.

Definition at line 15 of file ClpAmplObjective.hpp.

Constructor & Destructor Documentation

ClpAmplObjective::ClpAmplObjective ( )

Default Constructor.

ClpAmplObjective::ClpAmplObjective ( void * amplInfo )

Constructor from ampl info.

ClpAmplObjective::ClpAmplObjective ( const ClpAmplObjective & rhs )

Copy constructor .

virtual ClpAmplObjective::~ClpAmplObjective ( ) [virtual]

Destructor.

Member Function Documentation

virtual double* ClpAmplObjective::gradient	(	const ClpSimplex *	model,
		const double *	solution,
		double &	offset,
		bool	refresh,
		int	includeLinear = `2`
	)			`[virtual]`

Returns gradient.

If Ampl then solution may be NULL, also returns an offset (to be added to current one) If refresh is false then uses last solution Uses model for scaling includeLinear 0 - no, 1 as is, 2 as feasible

Implements ClpObjective.

virtual double ClpAmplObjective::reducedGradient	(	ClpSimplex *	model,
		double *	region,
		bool	useFeasibleCosts
	)			`[virtual]`

Resize objective.

Returns reduced gradient.Returns an offset (to be added to current one).

Implements ClpObjective.

virtual double ClpAmplObjective::stepLength	(	ClpSimplex *	model,
		const double *	solution,
		const double *	change,
		double	maximumTheta,
		double &	currentObj,
		double &	predictedObj,
		double &	thetaObj
	)			`[virtual]`

Returns step length which gives minimum of objective for solution + theta * change vector up to maximum theta.

arrays are numberColumns+numberRows Also sets current objective, predicted and at maximumTheta

Implements ClpObjective.

virtual double ClpAmplObjective::objectiveValue	(	const ClpSimplex *	model,
		const double *	solution
	)			const `[virtual]`

Return objective value (without any ClpModel offset) (model may be NULL).

Implements ClpObjective.

virtual void ClpAmplObjective::resize ( int newNumberColumns ) [virtual]

Returns gradient.

If Ampl then solution may be NULL, also returns an offset (to be added to current one) If refresh is false then uses last solution Uses model for scaling includeLinear 0 - no, 1 as is, 2 as feasible

Implements ClpObjective.