CbcHeuristicDive Class Reference

Dive class. More...

#include <CbcHeuristicDive.hpp>

Inheritance diagram for CbcHeuristicDive:

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Collaboration diagram for CbcHeuristicDive:

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List of all members.

Public Member Functions
	CbcHeuristicDive ()
	CbcHeuristicDive (CbcModel &model)
	CbcHeuristicDive (const CbcHeuristicDive &)
	~CbcHeuristicDive ()
virtual CbcHeuristicDive *	clone () const =0
	Clone.
CbcHeuristicDive &	operator= (const CbcHeuristicDive &rhs)
	Assignment operator.
virtual void	generateCpp (FILE *fp)
	Create C++ lines to get to current state.
void	generateCpp (FILE fp, const char heuristic)
	Create C++ lines to get to current state - does work for base class.
virtual void	resetModel (CbcModel *model)
	Resets stuff if model changes.
virtual void	setModel (CbcModel *model)
	update model (This is needed if cliques update matrix etc)
virtual int	solution (double &objectiveValue, double *newSolution)
	returns 0 if no solution, 1 if valid solution with better objective value than one passed in Sets solution values if good, sets objective value (only if good) This is called after cuts have been added - so can not add cuts This does Fractional Diving
virtual void	validate ()
	Validate model i.e. sets when_ to 0 if necessary (may be NULL).
void	selectBinaryVariables ()
	Select candidate binary variables for fixing.
void	setPercentageToFix (double value)
	Set percentage of integer variables to fix at bounds.
void	setMaxIterations (int value)
	Set maximum number of iterations.
void	setMaxTime (double value)
	Set maximum time allowed.
virtual bool	canHeuristicRun ()
	Tests if the heuristic can run.
virtual void	selectVariableToBranch (OsiSolverInterface solver, const double newSolution, int &bestColumn, int &bestRound)=0
	Selects the next variable to branch on.
Protected Attributes
CoinPackedMatrix	matrix_
CoinPackedMatrix	matrixByRow_
unsigned short *	downLocks_
unsigned short *	upLocks_
std::vector< int >	binVarIndex_
std::vector< int >	vbRowIndex_
double	percentageToFix_
int	maxIterations_
double	maxTime_

Detailed Description

Dive class.

Definition at line 11 of file CbcHeuristicDive.hpp.

Constructor & Destructor Documentation

CbcHeuristicDive::CbcHeuristicDive ( )

CbcHeuristicDive::CbcHeuristicDive ( CbcModel & model )

CbcHeuristicDive::CbcHeuristicDive ( const CbcHeuristicDive & )

CbcHeuristicDive::~CbcHeuristicDive ( )

Member Function Documentation

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

Clone.

Implements CbcHeuristic.

Implemented in CbcHeuristicDiveCoefficient, CbcHeuristicDiveFractional, CbcHeuristicDiveGuided, and CbcHeuristicDiveVectorLength.

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

Assignment operator.

Reimplemented from CbcHeuristic.

Reimplemented in CbcHeuristicDiveCoefficient, CbcHeuristicDiveFractional, CbcHeuristicDiveGuided, and CbcHeuristicDiveVectorLength.

virtual void CbcHeuristicDive::generateCpp ( FILE * fp ) [inline, virtual]

Create C++ lines to get to current state.

Reimplemented from CbcHeuristic.

Reimplemented in CbcHeuristicDiveCoefficient, CbcHeuristicDiveFractional, CbcHeuristicDiveGuided, and CbcHeuristicDiveVectorLength.

Definition at line 33 of file CbcHeuristicDive.hpp.

void CbcHeuristicDive::generateCpp	(	FILE *	fp,
		const char *	heuristic
	)

Create C++ lines to get to current state - does work for base class.

Reimplemented from CbcHeuristic.

virtual void CbcHeuristicDive::resetModel ( CbcModel * model ) [virtual]

Resets stuff if model changes.

Implements CbcHeuristic.

virtual void CbcHeuristicDive::setModel ( CbcModel * model ) [virtual]

update model (This is needed if cliques update matrix etc)

Reimplemented from CbcHeuristic.

virtual int CbcHeuristicDive::solution	(	double &	objectiveValue,
		double *	newSolution
	)			`[virtual]`

returns 0 if no solution, 1 if valid solution with better objective value than one passed in Sets solution values if good, sets objective value (only if good) This is called after cuts have been added - so can not add cuts This does Fractional Diving

Implements CbcHeuristic.

virtual void CbcHeuristicDive::validate ( ) [virtual]

Validate model i.e. sets when_ to 0 if necessary (may be NULL).

Reimplemented from CbcHeuristic.

void CbcHeuristicDive::selectBinaryVariables ( )

Select candidate binary variables for fixing.

void CbcHeuristicDive::setPercentageToFix ( double value ) [inline]

Set percentage of integer variables to fix at bounds.

Definition at line 61 of file CbcHeuristicDive.hpp.

void CbcHeuristicDive::setMaxIterations ( int value ) [inline]

Set maximum number of iterations.

Definition at line 65 of file CbcHeuristicDive.hpp.

void CbcHeuristicDive::setMaxTime ( double value ) [inline]

Set maximum time allowed.

Definition at line 69 of file CbcHeuristicDive.hpp.

virtual bool CbcHeuristicDive::canHeuristicRun ( ) [virtual]

Tests if the heuristic can run.

Reimplemented in CbcHeuristicDiveGuided.

virtual void CbcHeuristicDive::selectVariableToBranch	(	OsiSolverInterface *	solver,
		const double *	newSolution,
		int &	bestColumn,
		int &	bestRound
	)			`[pure virtual]`