CglCutGenerator Class Reference

Cut Generator Base Class. More...

#include <CglCutGenerator.hpp>

Inheritance diagram for CglCutGenerator:

Public Member Functions
Generate Cuts

virtual void	generateCuts (const OsiSolverInterface &si, OsiCuts &cs, const CglTreeInfo info=CglTreeInfo()) const =0
	Generate cuts for the model data contained in si.
Constructors and destructors

	CglCutGenerator ()
	Default constructor.
	CglCutGenerator (const CglCutGenerator &)
	Copy constructor.
virtual CglCutGenerator *	clone () const =0
	Clone.
CglCutGenerator &	operator= (const CglCutGenerator &rhs)
	Assignment operator.
virtual	~CglCutGenerator ()
	Destructor.
virtual std::string	generateCpp (FILE *fp)
	Create C++ lines to set the generator in the current state.
virtual void	refreshSolver (OsiSolverInterface *solver)
	This can be used to refresh any inforamtion.
Gets and Sets

int	getAggressiveness () const
	Get Aggressiveness - 0 = neutral, 100 is normal root node.
void	setAggressiveness (int value)
	Set Aggressiveness - 0 = neutral, 100 is normal root node.
virtual bool	mayGenerateRowCutsInTree () const
	Returns true if may generate Row cuts in tree (rather than root node).
virtual bool	needsOptimalBasis () const
	Return true if needs optimal basis to do cuts.
Public Attributes
int	aggressive_
	Aggressiveness - 0 = neutral, 100 is normal root node.

Detailed Description

Cut Generator Base Class.

This is an abstract base class for generating cuts. A specific cut generator will inherit from this class.

Definition at line 21 of file CglCutGenerator.hpp.

Constructor & Destructor Documentation

CglCutGenerator::CglCutGenerator ( )

Default constructor.

CglCutGenerator::CglCutGenerator ( const CglCutGenerator & )

Copy constructor.

virtual CglCutGenerator::~CglCutGenerator ( ) [virtual]

Destructor.

Member Function Documentation

virtual void CglCutGenerator::generateCuts	(	const OsiSolverInterface &	si,
		OsiCuts &	cs,
		const CglTreeInfo	info = `CglTreeInfo()`
	)			const `[pure virtual]`

Generate cuts for the model data contained in si.

The generated cuts are inserted into and returned in the collection of cuts cs.

Implemented in CglTemporary, CglAllDifferent, CglClique, CglFakeClique, CglDuplicateRow, CglFlowCover, CglGomory, CglKnapsackCover, CglLandP, CglLiftAndProject, CglMixedIntegerRounding, CglMixedIntegerRounding2, CglOddHole, CglProbing, CglRedSplit, CglResidualCapacity, CglSimpleRounding, CglStored, and CglTwomir.

virtual CglCutGenerator* CglCutGenerator::clone ( ) const [pure virtual]

Clone.

Implemented in CglTemporary, CglAllDifferent, CglClique, CglFakeClique, CglDuplicateRow, CglFlowCover, CglGomory, CglKnapsackCover, CglLandP, CglLiftAndProject, CglMixedIntegerRounding, CglMixedIntegerRounding2, CglOddHole, CglProbing, CglRedSplit, CglResidualCapacity, CglSimpleRounding, CglStored, and CglTwomir.

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

Assignment operator.

Reimplemented in CglTemporary, CglAllDifferent, CglClique, CglFakeClique, CglDuplicateRow, CglFlowCover, CglGomory, CglKnapsackCover, CglLandP, CglLiftAndProject, CglMixedIntegerRounding, CglMixedIntegerRounding2, CglOddHole, CglProbing, CglRedSplit, CglResidualCapacity, CglSimpleRounding, CglStored, and CglTwomir.

virtual std::string CglCutGenerator::generateCpp ( FILE * fp ) [inline, virtual]

Create C++ lines to set the generator in the current state.

The output must be parsed by the calling code, as each line starts with a key indicating the following:
0: must be kept (for includes etc)
3: Set to changed (not default) values
4: Set to default values (redundant)

Keys 1, 2, 5, 6, 7, 8 are defined, but not applicable to cut generators.

Reimplemented in CglAllDifferent, CglClique, CglDuplicateRow, CglFlowCover, CglGomory, CglKnapsackCover, CglLiftAndProject, CglMixedIntegerRounding, CglMixedIntegerRounding2, CglProbing, CglRedSplit, CglSimpleRounding, and CglTwomir.