Define an idiotic idea class. More...

#include <CbcFollowOn.hpp>

Inheritance diagram for CbcIdiotBranch:

Collaboration diagram for CbcIdiotBranch:

Public Member Functions
	CbcIdiotBranch ()

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

	CbcIdiotBranch (const CbcIdiotBranch &)

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

CbcIdiotBranch &	operator= (const CbcIdiotBranch &rhs)

	~CbcIdiotBranch ()

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

Protected Member Functions
OsiRowCut	buildCut (const OsiBranchingInformation *info, int type, int &preferredWay) const
	Build "cut". More...

Protected Attributes
CoinThreadRandom	randomNumberGenerator_
	data Thread specific random number generator More...

CoinThreadRandom	savedRandomNumberGenerator_
	Saved version of thread specific random number generator. 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 an idiotic idea class.

The idea of this is that we take some integer variables away from integer and sum them with some randomness to get signed sum close to 0.5. We then can branch to exclude that gap.

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

Definition at line 159 of file CbcFollowOn.hpp.

Constructor & Destructor Documentation

◆ CbcIdiotBranch() [1/3]

CbcIdiotBranch::CbcIdiotBranch ( )

◆ CbcIdiotBranch() [2/3]

CbcIdiotBranch::CbcIdiotBranch ( CbcModel * model )

Useful constructor.

◆ CbcIdiotBranch() [3/3]

CbcIdiotBranch::CbcIdiotBranch ( const CbcIdiotBranch & )

◆ ~CbcIdiotBranch()

CbcIdiotBranch::~CbcIdiotBranch ( )

Member Function Documentation

◆ clone()

virtual CbcObject* CbcIdiotBranch::clone ( ) const

virtual

Clone.

Implements CbcObject.

◆ operator=()

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

◆ infeasibility()

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

virtual

Infeasibility - large is 0.5.

Reimplemented from CbcObject.

◆ feasibleRegion() [1/4]

virtual void CbcIdiotBranch::feasibleRegion ( )

virtual

This looks at solution and sets bounds to contain solution.

Implements CbcObject.

◆ createCbcBranch()

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

virtual

Creates a branching object.

Reimplemented from CbcObject.

◆ initializeForBranching()

virtual void CbcIdiotBranch::initializeForBranching ( CbcModel * )

virtual

Initialize for branching.

Reimplemented from CbcObject.

◆ buildCut()

OsiRowCut CbcIdiotBranch::buildCut	(	const OsiBranchingInformation *	info,
		int	type,
		int &	preferredWay
	)		const

protected

Build "cut".

◆ 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

◆ randomNumberGenerator_

CoinThreadRandom CbcIdiotBranch::randomNumberGenerator_

mutableprotected

data Thread specific random number generator

Definition at line 199 of file CbcFollowOn.hpp.

◆ savedRandomNumberGenerator_

CoinThreadRandom CbcIdiotBranch::savedRandomNumberGenerator_

mutableprotected

Saved version of thread specific random number generator.

Definition at line 201 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 Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ CbcIdiotBranch() [1/3]

◆ CbcIdiotBranch() [2/3]

◆ CbcIdiotBranch() [3/3]

◆ ~CbcIdiotBranch()

Member Function Documentation

◆ clone()

◆ operator=()

◆ infeasibility()

◆ feasibleRegion() [1/4]

◆ createCbcBranch()

◆ initializeForBranching()

◆ buildCut()

◆ feasibleRegion() [2/4]

◆ feasibleRegion() [3/4]

◆ feasibleRegion() [4/4]

Member Data Documentation

◆ randomNumberGenerator_

◆ savedRandomNumberGenerator_