CbcSimpleInteger Class Reference

#include <CbcSimpleInteger.hpp>

Inheritance diagram for CbcSimpleInteger:

Collaboration diagram for CbcSimpleInteger:

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

Public Attributes
*Breakeven e	g
*Original upper bound double	originalUpper_
*Breakeven i	e
*Column number in model int	columnNumber_
*If down always chosen	first
*If down always chosen up	always
*If down always chosen up normal int	preferredWay_

Detailed Description

Definition at line 171 of file CbcSimpleInteger.hpp.

Constructor & Destructor Documentation

CbcSimpleInteger() [1/4]

CbcSimpleInteger::CbcSimpleInteger

(

)

CbcSimpleInteger() [2/4]

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

CbcSimpleInteger() [3/4]

CbcSimpleInteger::CbcSimpleInteger	(	CbcModel *	model,
		const OsiSimpleInteger *	object )

CbcSimpleInteger() [4/4]

CbcSimpleInteger::CbcSimpleInteger

(

const CbcSimpleInteger &

)

~CbcSimpleInteger()

virtual CbcSimpleInteger::~CbcSimpleInteger ( )

virtual

Member Function Documentation

clone()

*virtual Clone CbcObject * CbcSimpleInteger::clone ( ) const

virtual

Reimplemented in CbcSimpleIntegerDynamicPseudoCost, CbcSimpleIntegerFixed, and CbcSimpleIntegerPseudoCost.

operator=()

CbcSimpleInteger & CbcSimpleInteger::operator=

(

const CbcSimpleInteger &

rhs

)

osiObject()

*Construct an OsiSimpleInteger object OsiSimpleInteger * CbcSimpleInteger::osiObject

(

)

const

infeasibility()

*Infeasibility large virtual is double CbcSimpleInteger::infeasibility ( const OsiBranchingInformation * info, int & preferredWay ) const

virtual

Reimplemented in CbcSimpleIntegerDynamicPseudoCost, and CbcSimpleIntegerPseudoCost.

feasibleRegion() [1/2]

virtual double CbcSimpleInteger::feasibleRegion ( OsiSolverInterface * solver, const OsiBranchingInformation * info ) const

virtual

Set bounds to fix the variable at the current (integer) value.

Given an integer value, set the lower and upper bounds to fix the variable. Returns amount it had to move variable.

createCbcBranch()

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

virtual

Create a branching object and indicate which way to branch first.

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

Reimplemented in CbcSimpleIntegerDynamicPseudoCost, and CbcSimpleIntegerPseudoCost.

fillCreateBranch()

*Fills in a created branching object void CbcSimpleInteger::fillCreateBranch	(	CbcIntegerBranchingObject *	branching,
		const OsiBranchingInformation *	info,
		int	way )

solverBranch()

virtual OsiSolverBranch * CbcSimpleInteger::solverBranch ( OsiSolverInterface * solver, const OsiBranchingInformation * info ) const

virtual

Create an OsiSolverBranch object.

This returns NULL if branch not represented by bound changes

Reimplemented in CbcSimpleIntegerDynamicPseudoCost.

feasibleRegion() [2/2]

virtual void CbcSimpleInteger::feasibleRegion ( )

virtual

Set bounds to fix the variable at the current (integer) value.

Given an integer value, set the lower and upper bounds to fix the variable. The algorithm takes a bit of care in order to compensate for minor numerical inaccuracy.

columnNumber()

virtual int CbcSimpleInteger::columnNumber ( ) const

virtual

Column number if single column object -1 otherwise, so returns >= 0 Used by heuristics.

setColumnNumber()

*Set column number void CbcSimpleInteger::setColumnNumber ( int value )

inline

Definition at line 240 of file CbcSimpleInteger.hpp.

resetBounds()

virtual void CbcSimpleInteger::resetBounds ( const OsiSolverInterface * solver )

virtual

Reset variable bounds to their original values.

Bounds may be tightened, so it may be good to be able to set this info in object.

resetSequenceEtc()

virtual void CbcSimpleInteger::resetSequenceEtc ( int numberColumns, const int * originalColumns )

virtual

Change column numbers after preprocessing.

originalLowerBound()

*Original bounds double CbcSimpleInteger::originalLowerBound ( ) const

inline

Definition at line 255 of file CbcSimpleInteger.hpp.

setOriginalLowerBound()

void CbcSimpleInteger::setOriginalLowerBound ( double value )

inline

Definition at line 259 of file CbcSimpleInteger.hpp.

originalUpperBound()

double CbcSimpleInteger::originalUpperBound ( ) const

inline

Definition at line 263 of file CbcSimpleInteger.hpp.

setOriginalUpperBound()

void CbcSimpleInteger::setOriginalUpperBound ( double value )

inline

Definition at line 267 of file CbcSimpleInteger.hpp.

Member Data Documentation

g

* Breakeven e CbcSimpleInteger::g

Initial value:

= 0.7 go up first
  inline double breakEven() const
  {
    return breakEven_;
  }
   *  Set breakeven e.g 0.7 -> >= 0.7 go up first
  inline void setBreakEven(double value)
  {
    breakEven_ = value;
  }
 
protected:
   *  data
 
   *  Original lower bound
  double originalLower_

Definition at line 271 of file CbcSimpleInteger.hpp.

originalUpper_

* Original upper bound double CbcSimpleInteger::originalUpper_

Definition at line 288 of file CbcSimpleInteger.hpp.

e

* Breakeven i CbcSimpleInteger::e

Initial value:

= this preferred is up
  double breakEven_

Definition at line 289 of file CbcSimpleInteger.hpp.

columnNumber_

* Column number in model int CbcSimpleInteger::columnNumber_

Definition at line 292 of file CbcSimpleInteger.hpp.

first

* If down always chosen CbcSimpleInteger::first

Definition at line 293 of file CbcSimpleInteger.hpp.

always

* If down always chosen up CbcSimpleInteger::always

Definition at line 293 of file CbcSimpleInteger.hpp.

preferredWay_

* If down always chosen up normal int CbcSimpleInteger::preferredWay_

Definition at line 294 of file CbcSimpleInteger.hpp.

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

• Cbc/src/CbcSimpleInteger.hpp