Define a follow on class. More...

#include <CbcFollowOn.hpp>

Inheritance diagram for CbcFollowOn:

Collaboration diagram for CbcFollowOn:

Public Member Functions
	CbcFollowOn ()

	CbcFollowOn (CbcModel *model)
	Useful constructor. More...

	CbcFollowOn (const CbcFollowOn &)

virtual CbcObject *	clone () const
	Clone. More...

CbcFollowOn &	operator= (const CbcFollowOn &rhs)

	~CbcFollowOn ()

virtual double	infeasibility (const OsiBranchingInformation *info, int &preferredWay) const
	Infeasibility - large is 0.5. More...

virtual void	feasibleRegion ()
	This looks at solution and sets bounds to contain solution. More...

virtual CbcBranchingObject *	createCbcBranch (OsiSolverInterface solver, const OsiBranchingInformation info, int way)
	Creates a branching object. More...

virtual int	gutsOfFollowOn (int &otherRow, int &preferredWay) const
	As some computation is needed in more than one place - returns row. More...

virtual void	feasibleRegion ()=0
	For the variable(s) referenced by the object, look at the current solution and set bounds to match the solution. More...

virtual double	feasibleRegion (OsiSolverInterface solver, const OsiBranchingInformation info) const
	Dummy one for compatibility. More...

virtual double	feasibleRegion (OsiSolverInterface *solver) const
	For the variable(s) referenced by the object, look at the current solution and set bounds to match the solution. More...

Public Member Functions inherited from CbcObject
	CbcObject ()

	CbcObject (CbcModel *model)

	CbcObject (const CbcObject &)

CbcObject &	operator= (const CbcObject &rhs)

virtual	~CbcObject ()
	Destructor. More...

virtual double	infeasibility (int &) const

virtual double	feasibleRegion (OsiSolverInterface solver, const OsiBranchingInformation info) const
	Dummy one for compatibility. More...

virtual double	feasibleRegion (OsiSolverInterface *solver) const
	For the variable(s) referenced by the object, look at the current solution and set bounds to match the solution. More...

virtual OsiBranchingObject *	createBranch (OsiSolverInterface , const OsiBranchingInformation , int) const

virtual OsiBranchingObject *	createOsiBranch (OsiSolverInterface solver, const OsiBranchingInformation info, int way) const
	Create an Osibranching object and indicate which way to branch first. More...

virtual OsiSolverBranch *	solverBranch () const
	Create an OsiSolverBranch object. More...

virtual CbcBranchingObject *	preferredNewFeasible () const
	Given a valid solution (with reduced costs, etc.), return a branching object which would give a new feasible point in a good direction. More...

virtual CbcBranchingObject *	notPreferredNewFeasible () const
	Given a valid solution (with reduced costs, etc.), return a branching object which would give a new feasible point in a bad direction. More...

virtual void	resetBounds (const OsiSolverInterface *)
	Reset variable bounds to their original values. More...

virtual void	floorCeiling (double &floorValue, double &ceilingValue, double value, double tolerance) const
	Returns floor and ceiling i.e. More...

virtual CbcObjectUpdateData	createUpdateInformation (const OsiSolverInterface solver, const CbcNode node, const CbcBranchingObject *branchingObject)
	Pass in information on branch just done and create CbcObjectUpdateData instance. More...

virtual void	updateInformation (const CbcObjectUpdateData &)
	Update object by CbcObjectUpdateData. More...

int	id () const
	Identifier (normally column number in matrix) More...

void	setId (int value)
	Set identifier (normally column number in matrix) but 1000000000 to 1100000000 means optional branching object i.e. More...

bool	optionalObject () const
	Return true if optional branching object i.e. More...

int	position () const
	Get position in object_ list. More...

void	setPosition (int position)
	Set position in object_ list. More...

void	setModel (CbcModel *model)
	update model More...

CbcModel *	model () const
	Return model. More...

int	preferredWay () const
	If -1 down always chosen first, +1 up always, 0 normal. More...

void	setPreferredWay (int value)
	Set -1 down always chosen first, +1 up always, 0 normal. More...

virtual void	redoSequenceEtc (CbcModel , int, const int )
	Redoes data when sequence numbers change. More...

virtual void	initializeForBranching (CbcModel *)
	Initialize for branching. More...

Protected Attributes
CoinPackedMatrix	matrix_
	data Matrix More...

CoinPackedMatrix	matrixByRow_
	Matrix by row. More...

int *	rhs_
	Possible rhs (if 0 then not possible) More...

Protected Attributes inherited from CbcObject
CbcModel *	model_
	data More...

int	id_
	Identifier (normally column number in matrix) More...

int	position_
	Position in object list. More...

int	preferredWay_
	If -1 down always chosen first, +1 up always, 0 normal. More...

Detailed Description

Define a follow on class.

The idea of this is that in air-crew scheduling problems crew may fly in on flight A and out on flight B or on some other flight. A useful branch is one which on one side fixes all which go out on flight B to 0, while the other branch fixes all those that do NOT go out on flight B to 0.

This branching rule should be in addition to normal rules and have a high priority.

Definition at line 25 of file CbcFollowOn.hpp.

Constructor & Destructor Documentation

◆ CbcFollowOn() [1/3]

CbcFollowOn::CbcFollowOn ( )

◆ CbcFollowOn() [2/3]

CbcFollowOn::CbcFollowOn ( CbcModel * model )

Useful constructor.

◆ CbcFollowOn() [3/3]

CbcFollowOn::CbcFollowOn ( const CbcFollowOn & )

◆ ~CbcFollowOn()

CbcFollowOn::~CbcFollowOn ( )

Member Function Documentation

◆ clone()

virtual CbcObject* CbcFollowOn::clone ( ) const

virtual

Clone.

Implements CbcObject.

◆ operator=()

CbcFollowOn& CbcFollowOn::operator= ( const CbcFollowOn & rhs )

◆ infeasibility()

virtual double CbcFollowOn::infeasibility	(	const OsiBranchingInformation *	info,
		int &	preferredWay
	)		const

virtual

Infeasibility - large is 0.5.

Reimplemented from CbcObject.

◆ feasibleRegion() [1/4]

virtual void CbcFollowOn::feasibleRegion ( )

virtual

This looks at solution and sets bounds to contain solution.

Implements CbcObject.

◆ createCbcBranch()

virtual CbcBranchingObject* CbcFollowOn::createCbcBranch	(	OsiSolverInterface *	solver,
		const OsiBranchingInformation *	info,
		int	way
	)

virtual

Creates a branching object.

Reimplemented from CbcObject.

◆ gutsOfFollowOn()

virtual int CbcFollowOn::gutsOfFollowOn	(	int &	otherRow,
		int &	preferredWay
	)		const

virtual

As some computation is needed in more than one place - returns row.

◆ feasibleRegion() [2/4]

virtual void CbcObject::feasibleRegion

For the variable(s) referenced by the object, look at the current solution and set bounds to match the solution.

◆ feasibleRegion() [3/4]

virtual double CbcObject::feasibleRegion

Dummy one for compatibility.

◆ feasibleRegion() [4/4]

virtual double CbcObject::feasibleRegion

For the variable(s) referenced by the object, look at the current solution and set bounds to match the solution.

Returns measure of how much it had to move solution to make feasible

Member Data Documentation

◆ matrix_

CoinPackedMatrix CbcFollowOn::matrix_

protected

data Matrix

Definition at line 63 of file CbcFollowOn.hpp.

◆ matrixByRow_

CoinPackedMatrix CbcFollowOn::matrixByRow_

protected

Matrix by row.

Definition at line 65 of file CbcFollowOn.hpp.

◆ rhs_

int* CbcFollowOn::rhs_

protected

Possible rhs (if 0 then not possible)

Definition at line 67 of file CbcFollowOn.hpp.

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

/home/ted/Projects/Cbc/Cbc/src/CbcFollowOn.hpp

Public Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ CbcFollowOn() [1/3]

◆ CbcFollowOn() [2/3]

◆ CbcFollowOn() [3/3]

◆ ~CbcFollowOn()

Member Function Documentation

◆ clone()

◆ operator=()

◆ infeasibility()

◆ feasibleRegion() [1/4]

◆ createCbcBranch()

◆ gutsOfFollowOn()

◆ feasibleRegion() [2/4]

◆ feasibleRegion() [3/4]

◆ feasibleRegion() [4/4]

Member Data Documentation

◆ matrix_

◆ matrixByRow_

◆ rhs_