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AbcTolerancesEtc Class Reference

#include <CoinAbcCommon.hpp>

Public Member Functions

Constructors and destructors
 AbcTolerancesEtc ()
 Default Constructor. More...
 
 AbcTolerancesEtc (const ClpSimplex *model)
 Useful Constructors. More...
 
 AbcTolerancesEtc (const AbcSimplex *model)
 
 AbcTolerancesEtc (const AbcTolerancesEtc &)
 Copy constructor. More...
 
AbcTolerancesEtcoperator= (const AbcTolerancesEtc &rhs)
 Assignment operator. More...
 
 ~AbcTolerancesEtc ()
 Destructor. More...
 

Public Attributes

Public member data
double zeroTolerance_
 Zero tolerance. More...
 
double primalToleranceToGetOptimal_
 Primal tolerance needed to make dual feasible (<largeTolerance) More...
 
double largeValue_
 Large bound value (for complementarity etc) More...
 
double alphaAccuracy_
 For computing whether to re-factorize. More...
 
double dualBound_
 Dual bound. More...
 
double dualTolerance_
 Current dual tolerance for algorithm. More...
 
double primalTolerance_
 Current primal tolerance for algorithm. More...
 
double infeasibilityCost_
 Weight assigned to being infeasible in primal. More...
 
double incomingInfeasibility_
 For advanced use. More...
 
double allowedInfeasibility_
 
int baseIteration_
 Iteration when we entered dual or primal. More...
 
int numberRefinements_
 How many iterative refinements to do. More...
 
int forceFactorization_
 Now for some reliability aids This forces re-factorization early. More...
 
int perturbation_
 Perturbation: -50 to +50 - perturb by this power of ten (-6 sounds good) 100 - auto perturb if takes too long (1.0e-6 largest nonzero) 101 - we are perturbed 102 - don't try perturbing again default is 100. More...
 
int dontFactorizePivots_
 If may skip final factorize then allow up to this pivots (default 20) More...
 
int maximumPivots_
 For factorization Maximum number of pivots before factorization. More...
 

Detailed Description

Definition at line 256 of file CoinAbcCommon.hpp.

Constructor & Destructor Documentation

AbcTolerancesEtc::AbcTolerancesEtc ( )

Default Constructor.

AbcTolerancesEtc::AbcTolerancesEtc ( const ClpSimplex model)

Useful Constructors.

AbcTolerancesEtc::AbcTolerancesEtc ( const AbcSimplex model)
AbcTolerancesEtc::AbcTolerancesEtc ( const AbcTolerancesEtc )

Copy constructor.

AbcTolerancesEtc::~AbcTolerancesEtc ( )

Destructor.

Member Function Documentation

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

Assignment operator.

Member Data Documentation

double AbcTolerancesEtc::zeroTolerance_

Zero tolerance.

Definition at line 288 of file CoinAbcCommon.hpp.

double AbcTolerancesEtc::primalToleranceToGetOptimal_

Primal tolerance needed to make dual feasible (<largeTolerance)

Definition at line 290 of file CoinAbcCommon.hpp.

double AbcTolerancesEtc::largeValue_

Large bound value (for complementarity etc)

Definition at line 292 of file CoinAbcCommon.hpp.

double AbcTolerancesEtc::alphaAccuracy_

For computing whether to re-factorize.

Definition at line 294 of file CoinAbcCommon.hpp.

double AbcTolerancesEtc::dualBound_

Dual bound.

Definition at line 296 of file CoinAbcCommon.hpp.

double AbcTolerancesEtc::dualTolerance_

Current dual tolerance for algorithm.

Definition at line 298 of file CoinAbcCommon.hpp.

double AbcTolerancesEtc::primalTolerance_

Current primal tolerance for algorithm.

Definition at line 300 of file CoinAbcCommon.hpp.

double AbcTolerancesEtc::infeasibilityCost_

Weight assigned to being infeasible in primal.

Definition at line 302 of file CoinAbcCommon.hpp.

double AbcTolerancesEtc::incomingInfeasibility_

For advanced use.

When doing iterative solves things can get nasty so on values pass if incoming solution has largest infeasibility < incomingInfeasibility throw out variables from basis until largest infeasibility < allowedInfeasibility. if allowedInfeasibility>= incomingInfeasibility this is always possible altough you may end up with an all slack basis.

Defaults are 1.0,10.0

Definition at line 312 of file CoinAbcCommon.hpp.

double AbcTolerancesEtc::allowedInfeasibility_

Definition at line 313 of file CoinAbcCommon.hpp.

int AbcTolerancesEtc::baseIteration_

Iteration when we entered dual or primal.

Definition at line 315 of file CoinAbcCommon.hpp.

int AbcTolerancesEtc::numberRefinements_

How many iterative refinements to do.

Definition at line 317 of file CoinAbcCommon.hpp.

int AbcTolerancesEtc::forceFactorization_

Now for some reliability aids This forces re-factorization early.

Definition at line 320 of file CoinAbcCommon.hpp.

int AbcTolerancesEtc::perturbation_

Perturbation: -50 to +50 - perturb by this power of ten (-6 sounds good) 100 - auto perturb if takes too long (1.0e-6 largest nonzero) 101 - we are perturbed 102 - don't try perturbing again default is 100.

Definition at line 328 of file CoinAbcCommon.hpp.

int AbcTolerancesEtc::dontFactorizePivots_

If may skip final factorize then allow up to this pivots (default 20)

Definition at line 330 of file CoinAbcCommon.hpp.

int AbcTolerancesEtc::maximumPivots_

For factorization Maximum number of pivots before factorization.

Definition at line 333 of file CoinAbcCommon.hpp.


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