OsiBiLinearEquality Class Reference

Define Continuous BiLinear objects for an == bound. More...

#include <CbcLinked.hpp>

Inheritance diagram for OsiBiLinearEquality:

Collaboration diagram for OsiBiLinearEquality:

Public Member Functions
	OsiBiLinearEquality ()
	OsiBiLinearEquality (OsiSolverInterface *solver, int xColumn, int yColumn, int xyRow, double rhs, double xMesh)
	Useful constructor - This Adds in rows and variables to construct Ordered Set for x*y = b So note not const solver.
	OsiBiLinearEquality (const OsiBiLinearEquality &)
virtual OsiObject *	clone () const
	Clone.
OsiBiLinearEquality &	operator= (const OsiBiLinearEquality &rhs)
virtual	~OsiBiLinearEquality ()
virtual double	improvement (const OsiSolverInterface *solver) const
	Possible improvement.
double	newGrid (OsiSolverInterface *solver, int type) const
	change grid if type 0 then use solution and make finer if 1 then back to original returns mesh size
int	numberPoints () const
	Number of points.
void	setNumberPoints (int value)
Public Member Functions inherited from OsiBiLinear
	OsiBiLinear ()
	OsiBiLinear (OsiSolverInterface *solver, int xColumn, int yColumn, int xyRow, double coefficient, double xMesh, double yMesh, int numberExistingObjects=0, const OsiObject **objects=NULL)
	Useful constructor - This Adds in rows and variables to construct valid Linked Ordered Set Adds extra constraints to match other x/y So note not const solver.
	OsiBiLinear (CoinModel *coinModel, int xColumn, int yColumn, int xyRow, double coefficient, double xMesh, double yMesh, int numberExistingObjects=0, const OsiObject **objects=NULL)
	Useful constructor - This Adds in rows and variables to construct valid Linked Ordered Set Adds extra constraints to match other x/y So note not const model.
	OsiBiLinear (const OsiBiLinear &)
OsiBiLinear &	operator= (const OsiBiLinear &rhs)
virtual	~OsiBiLinear ()
virtual double	infeasibility (const OsiBranchingInformation *info, int &whichWay) const
	Infeasibility - large is 0.5.
virtual double	feasibleRegion (OsiSolverInterface *solver, const OsiBranchingInformation *info) const
	Set bounds to fix the variable at the current (integer) value.
virtual OsiBranchingObject *	createBranch (OsiSolverInterface *solver, const OsiBranchingInformation *info, int way) const
	Creates a branching object.
virtual void	resetSequenceEtc (int numberColumns, const int *originalColumns)
	Redoes data when sequence numbers change.
virtual double	checkInfeasibility (const OsiBranchingInformation *info) const
virtual bool	canDoHeuristics () const
	Return true if object can take part in normal heuristics.
virtual bool	boundBranch () const
	Return true if branch should only bound variables.
int	xColumn () const
	X column.
int	yColumn () const
	Y column.
int	xRow () const
	X row.
int	yRow () const
	Y row.
int	xyRow () const
	XY row.
double	coefficient () const
	Coefficient.
void	setCoefficient (double value)
	Set coefficient.
int	firstLambda () const
	First lambda (of 4).
double	xSatisfied () const
	X satisfied if less than this away from mesh.
void	setXSatisfied (double value)
double	ySatisfied () const
	Y satisfied if less than this away from mesh.
void	setYSatisfied (double value)
double	xOtherSatisfied () const
	X other satisfied if less than this away from mesh.
void	setXOtherSatisfied (double value)
double	yOtherSatisfied () const
	Y other satisfied if less than this away from mesh.
void	setYOtherSatisfied (double value)
double	xMeshSize () const
	X meshSize.
void	setXMeshSize (double value)
double	yMeshSize () const
	Y meshSize.
void	setYMeshSize (double value)
double	xySatisfied () const
	XY satisfied if two version differ by less than this.
void	setXYSatisfied (double value)
void	setMeshSizes (const OsiSolverInterface *solver, double x, double y)
	Set sizes and other stuff.
int	branchingStrategy () const
	branching strategy etc bottom 2 bits 0 branch on either, 1 branch on x, 2 branch on y next bit 4 set to say don't update coefficients next bit 8 set to say don't use in feasible region next bit 16 set to say - Always satisfied !
void	setBranchingStrategy (int value)
int	boundType () const
	Simple quadratic bound marker.
void	setBoundType (int value)
void	newBounds (OsiSolverInterface *solver, int way, short xOrY, double separator) const
	Does work of branching.
int	updateCoefficients (const double *lower, const double *upper, double *objective, CoinPackedMatrix *matrix, CoinWarmStartBasis *basis) const
	Updates coefficients - returns number updated.
double	xyCoefficient (const double *solution) const
	Returns true value of single xyRow coefficient.
void	getCoefficients (const OsiSolverInterface *solver, double xB[2], double yB[2], double xybar[4]) const
	Get LU coefficients from matrix.
double	computeLambdas (const double xB[3], const double yB[3], const double xybar[4], double lambda[4]) const
	Compute lambdas (third entry in each .B is current value) (nonzero if bad).
void	addExtraRow (int row, double multiplier)
	Adds in data for extra row with variable coefficients.
void	getPseudoShadow (const OsiBranchingInformation *info)
	Sets infeasibility and other when pseudo shadow prices.
double	getMovement (const OsiBranchingInformation *info)
	Gets sum of movements to correct value.

Protected Attributes
int	numberPoints_
	Number of points.
Protected Attributes inherited from OsiBiLinear
double	coefficient_
	data
double	xMeshSize_
	x mesh
double	yMeshSize_
	y mesh
double	xSatisfied_
	x satisfied if less than this away from mesh
double	ySatisfied_
	y satisfied if less than this away from mesh
double	xOtherSatisfied_
	X other satisfied if less than this away from mesh.
double	yOtherSatisfied_
	Y other satisfied if less than this away from mesh.
double	xySatisfied_
	xy satisfied if less than this away from true
double	xyBranchValue_
	value of x or y to branch about
int	xColumn_
	x column
int	yColumn_
	y column
int	firstLambda_
	First lambda (of 4).
int	branchingStrategy_
	branching strategy etc bottom 2 bits 0 branch on either, 1 branch on x, 2 branch on y next bit 4 set to say don't update coefficients next bit 8 set to say don't use in feasible region next bit 16 set to say - Always satisfied !
int	boundType_
	Simple quadratic bound marker.
int	xRow_
	x row
int	yRow_
	y row (-1 if x*x)
int	xyRow_
	Output row.
int	convexity_
	Convexity row.
int	numberExtraRows_
	Number of extra rows (coefficients to be modified).
double *	multiplier_
	Multiplier for coefficient on row.
int *	extraRow_
	Row number.
short	chosen_
	Which chosen -1 none, 0 x, 1 y.

Additional Inherited Members
Protected Member Functions inherited from OsiBiLinear
void	computeLambdas (const OsiSolverInterface *solver, double lambda[4]) const
	Compute lambdas if coefficients not changing.

Detailed Description

Define Continuous BiLinear objects for an == bound.

This models x*y = b where both are continuous

Definition at line 1077 of file CbcLinked.hpp.

Constructor & Destructor Documentation

OsiBiLinearEquality() [1/3]

OsiBiLinearEquality::OsiBiLinearEquality

(

)

OsiBiLinearEquality() [2/3]

OsiBiLinearEquality::OsiBiLinearEquality	(	OsiSolverInterface *	solver,
		int	xColumn,
		int	yColumn,
		int	xyRow,
		double	rhs,
		double	xMesh )

Useful constructor - This Adds in rows and variables to construct Ordered Set for x*y = b So note not const solver.

OsiBiLinearEquality() [3/3]

OsiBiLinearEquality::OsiBiLinearEquality

(

const OsiBiLinearEquality &

)

~OsiBiLinearEquality()

virtual OsiBiLinearEquality::~OsiBiLinearEquality ( )

virtual

Member Function Documentation

clone()

virtual OsiObject * OsiBiLinearEquality::clone ( ) const

virtual

Clone.

Reimplemented from OsiBiLinear.

operator=()

OsiBiLinearEquality & OsiBiLinearEquality::operator=

(

const OsiBiLinearEquality &

rhs

)

improvement()

virtual double OsiBiLinearEquality::improvement ( const OsiSolverInterface * solver ) const

virtual

Possible improvement.

newGrid()

double OsiBiLinearEquality::newGrid	(	OsiSolverInterface *	solver,
		int	type ) const

change grid if type 0 then use solution and make finer if 1 then back to original returns mesh size

numberPoints()

int OsiBiLinearEquality::numberPoints ( ) const

inline

Number of points.

Definition at line 1113 of file CbcLinked.hpp.

setNumberPoints()

void OsiBiLinearEquality::setNumberPoints ( int value )

inline

Definition at line 1117 of file CbcLinked.hpp.

Member Data Documentation

numberPoints_

int OsiBiLinearEquality::numberPoints_

protected

Number of points.

Definition at line 1124 of file CbcLinked.hpp.

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

• Cbc/src/CbcLinked.hpp