Couenne::CouenneComplBranchingObject Class Reference

"Spatial" branching object for complementarity constraints. More...

#include <CouenneComplBranchingObject.hpp>

Inheritance diagram for Couenne::CouenneComplBranchingObject:

Public Member Functions
	CouenneComplBranchingObject (OsiSolverInterface *solver, const OsiObject *originalObject, JnlstPtr jnlst, CouenneCutGenerator *c, CouenneProblem *p, expression *var, expression *var2, int way, CouNumber brpoint, bool doFBBT, bool doConvCuts, int sign)
	Constructor. More...
	CouenneComplBranchingObject (const CouenneComplBranchingObject &src)
	Copy constructor. More...
virtual OsiBranchingObject *	clone () const
	cloning method More...
virtual double	branch (OsiSolverInterface *solver=NULL)
	Execute the actions required to branch, as specified by the current state of the branching object, and advance the object's state. More...
Public Member Functions inherited from Couenne::CouenneBranchingObject
	CouenneBranchingObject (OsiSolverInterface *solver, const OsiObject *originalObject, JnlstPtr jnlst, CouenneCutGenerator *c, CouenneProblem *p, expression *var, int way, CouNumber brpoint, bool doFBBT, bool doConvCuts)
	Constructor. More...
	CouenneBranchingObject (const CouenneBranchingObject &src)
	Copy constructor. More...
virtual bool	boundBranch () const
	does this branching object only change variable bounds? More...
void	setSimulate (bool s)
	set simulate_ field below More...
expression *	variable ()
	return branching variable More...
void	branchCore (OsiSolverInterface *, int, int, bool, double, t_chg_bounds *&)
	Perform branching step. More...

Protected Attributes
expression *	variable2_
	use CouenneBranchingObject::variable_ as the first variable to set to 0, and this one as the second More...
int	sign_
	-1 if object is for xi * xj <= 0 +1 if object is for xi * xj <= 0 0 if object is for xi * xj = 0 (classical) More...
Protected Attributes inherited from Couenne::CouenneBranchingObject
CouenneCutGenerator *	cutGen_
	Pointer to CouenneCutGenerator (if any); if not NULL, allows to do extra cut generation during branching. More...
CouenneProblem *	problem_
	Pointer to CouenneProblem (necessary to allow FBBT) More...
expression *	variable_
	The index of the variable this branching object refers to. More...
JnlstPtr	jnlst_
	SmartPointer to the Journalist. More...
bool	doFBBT_
	shall we do Feasibility based Bound Tightening (FBBT) at branching? More...
bool	doConvCuts_
	shall we add convexification cuts at branching? More...
double	downEstimate_
	down branch estimate (done at selectBranch with reduced costs) More...
double	upEstimate_
	up branch estimate More...
bool	simulate_
	are we currently in strong branching? More...

Additional Inherited Members
Static Public Attributes inherited from Couenne::CouenneBranchingObject
static int	nOrbBr
static int	maxDepthOrbBranch
static int	nSGcomputations

Detailed Description

"Spatial" branching object for complementarity constraints.

Branching on such an object x_1 x_2 = 0 is performed by setting either x_1=0 or x_2=0

Definition at line 24 of file CouenneComplBranchingObject.hpp.

Constructor & Destructor Documentation

Couenne::CouenneComplBranchingObject::CouenneComplBranchingObject	(	OsiSolverInterface *	solver,
		const OsiObject *	originalObject,
		JnlstPtr	jnlst,
		CouenneCutGenerator *	c,
		CouenneProblem *	p,
		expression *	var,
		expression *	var2,
		int	way,
		CouNumber	brpoint,
		bool	doFBBT,
		bool	doConvCuts,
		int	sign
	)

Constructor.

Referenced by clone().

Couenne::CouenneComplBranchingObject::CouenneComplBranchingObject ( const CouenneComplBranchingObject &  src )

inline

Copy constructor.

Definition at line 43 of file CouenneComplBranchingObject.hpp.

Member Function Documentation

virtual OsiBranchingObject* Couenne::CouenneComplBranchingObject::clone ( ) const

inlinevirtual

cloning method

Reimplemented from Couenne::CouenneBranchingObject.

Definition at line 49 of file CouenneComplBranchingObject.hpp.

References CouenneComplBranchingObject().

virtual double Couenne::CouenneComplBranchingObject::branch ( OsiSolverInterface *  solver = NULL )

virtual

Execute the actions required to branch, as specified by the current state of the branching object, and advance the object's state.

Returns change in guessed objective on next branch

Reimplemented from Couenne::CouenneBranchingObject.

Member Data Documentation

expression* Couenne::CouenneComplBranchingObject::variable2_

protected

use CouenneBranchingObject::variable_ as the first variable to set to 0, and this one as the second

Definition at line 63 of file CouenneComplBranchingObject.hpp.

int Couenne::CouenneComplBranchingObject::sign_

protected

-1 if object is for xi * xj <= 0 +1 if object is for xi * xj <= 0 0 if object is for xi * xj = 0 (classical)

Definition at line 68 of file CouenneComplBranchingObject.hpp.

---

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

• CouenneComplBranchingObject.hpp