CbcSimpleIntegerFixed Class Reference

Define a single integer class where branching is forced until fixed. More...

#include <CbcBranchUser.hpp>

Inheritance diagram for CbcSimpleIntegerFixed:

Collaboration diagram for CbcSimpleIntegerFixed:

Public Member Functions
	CbcSimpleIntegerFixed ()
	CbcSimpleIntegerFixed (CbcModel *model, int iColumn, double breakEven=0.5)
	CbcSimpleIntegerFixed (const CbcSimpleInteger &simple)
	CbcSimpleIntegerFixed (const CbcSimpleIntegerFixed &)
virtual CbcObject *	clone () const
	Clone. More...
CbcSimpleIntegerFixed &	operator= (const CbcSimpleIntegerFixed &rhs)
	~CbcSimpleIntegerFixed ()
virtual double	infeasibility (int &preferredWay) const
	Infeasibility - large is 0.5. More...
virtual CbcBranchingObject *	createBranch (OsiSolverInterface *solver, const OsiBranchingInformation *info, int way)
	Creates a branching object. More...
Public Member Functions inherited from CbcSimpleInteger
	CbcSimpleInteger ()
	CbcSimpleInteger (CbcModel *model, int iColumn, double breakEven=0.5)
	CbcSimpleInteger (CbcModel *model, const OsiSimpleInteger *object)
	CbcSimpleInteger (const CbcSimpleInteger &)
CbcSimpleInteger &	operator= (const CbcSimpleInteger &rhs)
virtual	~CbcSimpleInteger ()
OsiSimpleInteger *	osiObject () const
	Construct an OsiSimpleInteger object. More...
virtual double	infeasibility (const OsiBranchingInformation *info, int &preferredWay) const
	Infeasibility - large is 0.5. More...
virtual double	feasibleRegion (OsiSolverInterface *solver, const OsiBranchingInformation *info) const
	Set bounds to fix the variable at the current (integer) value. More...
virtual CbcBranchingObject *	createCbcBranch (OsiSolverInterface *solver, const OsiBranchingInformation *info, int way)
	Create a branching object and indicate which way to branch first. More...
void	fillCreateBranch (CbcIntegerBranchingObject *branching, const OsiBranchingInformation *info, int way)
	Fills in a created branching object. More...
virtual OsiSolverBranch *	solverBranch (OsiSolverInterface *solver, const OsiBranchingInformation *info) const
	Create an OsiSolverBranch object. More...
virtual void	feasibleRegion ()
	Set bounds to fix the variable at the current (integer) value. More...
virtual int	columnNumber () const
	Column number if single column object -1 otherwise, so returns >= 0 Used by heuristics. More...
void	setColumnNumber (int value)
	Set column number. More...
virtual void	resetBounds (const OsiSolverInterface *solver)
	Reset variable bounds to their original values. More...
virtual void	resetSequenceEtc (int numberColumns, const int *originalColumns)
	Change column numbers after preprocessing. More...
double	originalLowerBound () const
	Original bounds. More...
void	setOriginalLowerBound (double value)
double	originalUpperBound () const
void	setOriginalUpperBound (double value)
double	breakEven () const
	Breakeven e.g 0.7 -> >= 0.7 go up first. More...
void	setBreakEven (double value)
	Set breakeven e.g 0.7 -> >= 0.7 go up first. 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...
virtual OsiSolverBranch *	solverBranch () const
	Create an OsiSolverBranch object. 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	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	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...

Additional Inherited Members
Protected Attributes inherited from CbcSimpleInteger
double	originalLower_
	data More...
double	originalUpper_
	Original upper bound. More...
double	breakEven_
	Breakeven i.e. >= this preferred is up. More...
int	columnNumber_
	Column number in model. More...
int	preferredWay_
	If -1 down always chosen first, +1 up always, 0 normal. 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 single integer class where branching is forced until fixed.

Definition at line 62 of file CbcBranchUser.hpp.

Constructor & Destructor Documentation

CbcSimpleIntegerFixed() [1/4]

CbcSimpleIntegerFixed::CbcSimpleIntegerFixed

(

)

CbcSimpleIntegerFixed() [2/4]

CbcSimpleIntegerFixed::CbcSimpleIntegerFixed	(	CbcModel *	model,
		int	iColumn,
		double	breakEven = 0.5
	)

CbcSimpleIntegerFixed() [3/4]

CbcSimpleIntegerFixed::CbcSimpleIntegerFixed

(

const CbcSimpleInteger &

simple

)

CbcSimpleIntegerFixed() [4/4]

CbcSimpleIntegerFixed::CbcSimpleIntegerFixed

(

const CbcSimpleIntegerFixed &

)

~CbcSimpleIntegerFixed()

CbcSimpleIntegerFixed::~CbcSimpleIntegerFixed

(

)

Member Function Documentation

clone()

virtual CbcObject* CbcSimpleIntegerFixed::clone ( ) const

virtual

Clone.

Reimplemented from CbcSimpleInteger.

operator=()

CbcSimpleIntegerFixed& CbcSimpleIntegerFixed::operator=

(

const CbcSimpleIntegerFixed &

rhs

)

infeasibility()

virtual double CbcSimpleIntegerFixed::infeasibility ( int &  preferredWay ) const

virtual

Infeasibility - large is 0.5.

Reimplemented from CbcObject.

createBranch()

virtual CbcBranchingObject* CbcSimpleIntegerFixed::createBranch ( OsiSolverInterface *  solver, const OsiBranchingInformation *  info, int  way  )

virtual

Creates a branching object.

The preferred direction is set by way, -1 for down, +1 for up. Create a branching object and indicate which way to branch first.

The branching object has to know how to create branches (fix variables, etc.)

---

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

• /home/ted/Projects/Cbc/Cbc/examples/CbcBranchUser.hpp