Auto pricer. More...

#include <spxautopr.h>

Inheritance diagram for SPxAutoPR< R >:

Public Member Functions
Constructors / destructors
	SPxAutoPR ()
	default constructor
	SPxAutoPR (const SPxAutoPR &old)
	copy constructor
SPxAutoPR &	operator= (const SPxAutoPR &rhs)
	assignment operator
virtual	~SPxAutoPR ()
	destructor
virtual SPxPricer< R > *	clone () const
	clone function for polymorphism
Access / modification
void	setSwitchIters (int iters)
	set max number of iterations before switching pricers
void	clear ()
	clear the data
void	setPricingTolerance (R tol)
	set tolerances of internal pricers
virtual void	load (SPxSolverBase< R > *base)
	set the solver
virtual void	setType (typename SPxSolverBase< R >::Type)
	set entering/leaving algorithm
virtual void	setRep (typename SPxSolverBase< R >::Representation)
	set row/column representation
virtual int	selectLeave ()
virtual SPxId	selectEnter ()
virtual void	left4 (int n, SPxId id)
virtual void	entered4 (SPxId id, int n)
Public Member Functions inherited from SPxPricer< R >
virtual const char *	getName () const
	get name of pricer.
virtual SPxSolverBase< R > *	solver () const
	returns loaded SPxSolverBase object.
virtual R	pricingTolerance () const
	returns the pricing tolerance
virtual void	setTolerances (std::shared_ptr< Tolerances > newTolerances)
	set the _tolerances member variable
virtual void	addedVecs (int)
	`n` vectors have been added to loaded LP.
virtual void	addedCoVecs (int)
	`n` covectors have been added to loaded LP.
virtual void	removedVec (int)
	vector `i` was removed from loaded LP.
virtual void	removedVecs (const int *)
	vectors given by `perm` have been removed from loaded LP.
virtual void	removedCoVec (int)
	covector `i` was removed from loaded LP.
virtual void	removedCoVecs (const int *)
	covectors given by `perm` have been removed from loaded LP.
virtual bool	isConsistent () const
	SPxPricer (const char *p_name)
	constructor
	SPxPricer (const SPxPricer &old)
	copy constructor
SPxPricer &	operator= (const SPxPricer &rhs)
	assignment operator
virtual	~SPxPricer ()
	destructor.

Private Member Functions
bool	setActivePricer (typename SPxSolverBase< R >::Type type)
	switches active pricing method

Private Attributes
int	switchIters
	number of iterations before switching pricers
SPxPricer< R > *	activepricer
	pointer to currently selected pricer
SPxDevexPR< R >	devex
	internal Devex pricer
SPxSteepExPR< R >	steep
	internal Steepest edge pricer

Additional Inherited Members
Public Types inherited from SPxPricer< R >
enum	ViolationType { NOT_VIOLATED = 0 , VIOLATED = 1 , VIOLATED_AND_CHECKED = 2 }
Protected Attributes inherited from SPxPricer< R >
IdxCompare	compare
const char *	m_name
	name of the pricer
SPxSolverBase< R > *	thesolver
	the solver
R	thetolerance
	violation bound
std::shared_ptr< Tolerances >	_tolerances
	tolerances used by the solver

Detailed Description

template<class R>
class soplex::SPxAutoPR< R >

Auto pricer.

This pricer switches between Devex and Steepest edge pricer based on the difficulty of the problem which is determined by the number of iterations.

See SPxPricer for a class documentation.

Definition at line 51 of file spxautopr.h.

Constructor & Destructor Documentation

◆ SPxAutoPR() [1/2]

template<class R>

SPxAutoPR ( )

default constructor

Definition at line 69 of file spxautopr.h.

References activepricer, devex, SPxPricer< R >::SPxPricer(), steep, and switchIters.

Referenced by clone(), operator=(), and SPxAutoPR().

◆ SPxAutoPR() [2/2]

template<class R>

SPxAutoPR ( const SPxAutoPR< R > & old )

copy constructor

Definition at line 77 of file spxautopr.h.

References activepricer, devex, SPxAutoPR(), SPxPricer< R >::SPxPricer(), steep, and switchIters.

◆ ~SPxAutoPR()

template<class R>

virtual ~SPxAutoPR ( )

virtual

destructor

Definition at line 111 of file spxautopr.h.

Member Function Documentation

◆ clear()

template<class R>

void clear ( )

virtual

clear the data

Reimplemented from SPxPricer< R >.

◆ clone()

template<class R>

virtual SPxPricer< R > * clone ( ) const

virtual

clone function for polymorphism

Implements SPxPricer< R >.

Definition at line 114 of file spxautopr.h.

References SPxAutoPR(), and SPxPricer< R >::SPxPricer().

◆ entered4()

template<class R>

virtual void entered4	(	SPxId	id,
		int	n )

virtual

Reimplemented from SPxPricer< R >.

◆ left4()

template<class R>

virtual void left4	(	int	n,
		SPxId	id )

virtual

Reimplemented from SPxPricer< R >.

◆ load()

template<class R>

virtual void load ( SPxSolverBase< R > * base )

virtual

set the solver

Reimplemented from SPxPricer< R >.

◆ operator=()

template<class R>

SPxAutoPR & operator= ( const SPxAutoPR< R > & rhs )

assignment operator

Definition at line 91 of file spxautopr.h.

References activepricer, devex, SPxPricer< R >::operator=(), SPxAutoPR(), steep, and switchIters.

◆ selectEnter()

template<class R>

virtual SPxId selectEnter ( )

virtual

Implements SPxPricer< R >.

◆ selectLeave()

template<class R>

virtual int selectLeave ( )

virtual

Implements SPxPricer< R >.

◆ setActivePricer()

template<class R>

bool setActivePricer ( typename SPxSolverBase< R >::Type type )

private

switches active pricing method

◆ setPricingTolerance()

template<class R>

void setPricingTolerance ( R tol )

virtual

set tolerances of internal pricers

Reimplemented from SPxPricer< R >.

◆ setRep()

template<class R>

virtual void setRep ( typename SPxSolverBase< R >::Representation )

virtual

set row/column representation

Reimplemented from SPxPricer< R >.

◆ setSwitchIters()

template<class R>

void setSwitchIters ( int iters )

set max number of iterations before switching pricers

◆ setType()

template<class R>

virtual void setType ( typename SPxSolverBase< R >::Type )

virtual

set entering/leaving algorithm

Reimplemented from SPxPricer< R >.

Member Data Documentation

◆ activepricer

template<class R>

SPxPricer<R>* activepricer

private

pointer to currently selected pricer

Definition at line 56 of file spxautopr.h.

Referenced by operator=(), SPxAutoPR(), and SPxAutoPR().

◆ devex

template<class R>

SPxDevexPR<R> devex

private

internal Devex pricer

Definition at line 57 of file spxautopr.h.

Referenced by operator=(), SPxAutoPR(), and SPxAutoPR().

◆ steep

template<class R>

SPxSteepExPR<R> steep

private

internal Steepest edge pricer

Definition at line 58 of file spxautopr.h.

Referenced by operator=(), SPxAutoPR(), and SPxAutoPR().

◆ switchIters

template<class R>

int switchIters

private

number of iterations before switching pricers

Definition at line 55 of file spxautopr.h.

Referenced by operator=(), SPxAutoPR(), and SPxAutoPR().

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ SPxAutoPR() [1/2]

◆ SPxAutoPR() [2/2]

◆ ~SPxAutoPR()

Member Function Documentation

◆ clear()

◆ clone()

◆ entered4()

◆ left4()

◆ load()

◆ operator=()

◆ selectEnter()

◆ selectLeave()

◆ setActivePricer()

◆ setPricingTolerance()

◆ setRep()

◆ setSwitchIters()

◆ setType()

Member Data Documentation

◆ activepricer

◆ devex

◆ steep

◆ switchIters