CglTwomir Class Reference

Twostep MIR Cut Generator Class. More...

#include <CglTwomir.hpp>

Inheritance diagram for CglTwomir:

Collaboration diagram for CglTwomir:

List of all members.

Public Member Functions
Generate Cuts
virtual void	generateCuts (const OsiSolverInterface &si, OsiCuts &cs, const CglTreeInfo info=CglTreeInfo()) const
	Generate Two step MIR cuts either from the tableau rows or from the formulation rows.
virtual bool	needsOptimalBasis () const
	Return true if needs optimal basis to do cuts (will return true)
Change criterion on which scalings to use (default = 1,1,1,1)
void	setMirScale (int tmin, int tmax)
	Set.
void	setTwomirScale (int qmin, int qmax)
void	setAMax (int a)
void	setMaxElements (int n)
void	setMaxElementsRoot (int n)
void	setCutTypes (bool mir, bool twomir, bool tab, bool form)
void	setFormulationRows (int n)
int	getTmin () const
	Get.
int	getTmax () const
int	getQmin () const
int	getQmax () const
int	getAmax () const
int	getMaxElements () const
int	getMaxElementsRoot () const
int	getIfMir () const
int	getIfTwomir () const
int	getIfTableau () const
int	getIfFormulation () const
Change criterion on which variables to look at. All ones
more than "away" away from integrality will be investigated (default 0.05)
void	setAway (double value)
	Set away.
double	getAway () const
	Get away.
void	setAwayAtRoot (double value)
	Set away at root.
double	getAwayAtRoot () const
	Get away at root.
virtual int	maximumLengthOfCutInTree () const
	Return maximum length of cut in tree.
Constructors and destructors
	CglTwomir ()
	Default constructor.
	CglTwomir (const CglTwomir &)
	Copy constructor.
virtual CglCutGenerator *	clone () const
	Clone.
CglTwomir &	operator= (const CglTwomir &rhs)
	Assignment operator.
virtual	~CglTwomir ()
	Destructor.
virtual std::string	generateCpp (FILE *fp)
	Create C++ lines to get to current state.
Public Attributes
std::string	probname_
	Problem name.
Friends
void	CglTwomirUnitTest (const OsiSolverInterface *siP, const std::string mpdDir)
	A function that tests the methods in the CglTwomir class.

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Detailed Description

Twostep MIR Cut Generator Class.

Definition at line 91 of file CglTwomir.hpp.

---

Constructor & Destructor Documentation

CglTwomir::CglTwomir

(

)

Default constructor.

CglTwomir::CglTwomir

(

const CglTwomir &

)

Copy constructor.

virtual CglTwomir::~CglTwomir

(

)

[virtual]

Destructor.

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Member Function Documentation

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

Generate Two step MIR cuts either from the tableau rows or from the formulation rows.

Implements CglCutGenerator.

virtual bool CglTwomir::needsOptimalBasis

(

)

const [virtual]

Return true if needs optimal basis to do cuts (will return true)

Reimplemented from CglCutGenerator.

void CglTwomir::setMirScale	(	int	tmin,
		int	tmax
	)		[inline]

Set.

Definition at line 115 of file CglTwomir.hpp.

void CglTwomir::setTwomirScale	(	int	qmin,
		int	qmax
	)		[inline]

Definition at line 116 of file CglTwomir.hpp.

void CglTwomir::setAMax

(

int

a

)

[inline]

Definition at line 117 of file CglTwomir.hpp.

void CglTwomir::setMaxElements

(

int

n

)

[inline]

Definition at line 118 of file CglTwomir.hpp.

void CglTwomir::setMaxElementsRoot

(

int

n

)

[inline]

Definition at line 119 of file CglTwomir.hpp.

void CglTwomir::setCutTypes	(	bool	mir,
		bool	twomir,
		bool	tab,
		bool	form
	)		[inline]

Definition at line 120 of file CglTwomir.hpp.

void CglTwomir::setFormulationRows

(

int

n

)

[inline]

Definition at line 122 of file CglTwomir.hpp.

int CglTwomir::getTmin

(

)

const [inline]

Get.

Definition at line 125 of file CglTwomir.hpp.

int CglTwomir::getTmax

(

)

const [inline]

Definition at line 126 of file CglTwomir.hpp.

int CglTwomir::getQmin

(

)

const [inline]

Definition at line 127 of file CglTwomir.hpp.

int CglTwomir::getQmax

(

)

const [inline]

Definition at line 128 of file CglTwomir.hpp.

int CglTwomir::getAmax

(

)

const [inline]

Definition at line 129 of file CglTwomir.hpp.

int CglTwomir::getMaxElements

(

)

const [inline]

Definition at line 130 of file CglTwomir.hpp.

int CglTwomir::getMaxElementsRoot

(

)

const [inline]

Definition at line 131 of file CglTwomir.hpp.

int CglTwomir::getIfMir

(

)

const [inline]

Definition at line 132 of file CglTwomir.hpp.

int CglTwomir::getIfTwomir

(

)

const [inline]

Definition at line 133 of file CglTwomir.hpp.

int CglTwomir::getIfTableau

(

)

const [inline]

Definition at line 134 of file CglTwomir.hpp.

int CglTwomir::getIfFormulation

(

)

const [inline]

Definition at line 135 of file CglTwomir.hpp.

void CglTwomir::setAway

(

double

value

)

Set away.

double CglTwomir::getAway

(

)

const

Get away.

void CglTwomir::setAwayAtRoot

(

double

value

)

Set away at root.

double CglTwomir::getAwayAtRoot

(

)

const

Get away at root.

virtual int CglTwomir::maximumLengthOfCutInTree

(

)

const [inline, virtual]

Return maximum length of cut in tree.

Reimplemented from CglCutGenerator.

Definition at line 151 of file CglTwomir.hpp.

virtual CglCutGenerator* CglTwomir::clone

(

)

const [virtual]

Clone.

Implements CglCutGenerator.

CglTwomir& CglTwomir::operator=

(

const CglTwomir &

rhs

)

Assignment operator.

virtual std::string CglTwomir::generateCpp

(

FILE *

fp

)

[virtual]

Create C++ lines to get to current state.

Reimplemented from CglCutGenerator.

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Friends And Related Function Documentation

void CglTwomirUnitTest	(	const OsiSolverInterface *	siP,
		const std::string	mpdDir
	)		[friend]

A function that tests the methods in the CglTwomir class.

The only reason for it not to be a member method is that this way it doesn't have to be compiled into the library. And that's a gain, because the library should be compiled with optimization on, but this method should be compiled with debugging.

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Member Data Documentation

std::string CglTwomir::probname_ [mutable]

Problem name.

Definition at line 100 of file CglTwomir.hpp.

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

• src/CglTwomir/CglTwomir.hpp