Cgl 0.60.2

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CglGMIParam Class Reference

Class collecting parameters for the GMI cut generator. More...

`#include <CglGMIParam.hpp>`

Inheritance diagram for CglGMIParam:
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Collaboration diagram for CglGMIParam:
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## Public Types
Enumerations
enum | CleaningProcedure { CP_CGLLANDP1, CP_CGLLANDP2, CP_CGLREDSPLIT, CP_INTEGRAL_CUTS, CP_CGLLANDP1_INT, CP_CGLLANDP1_SCALEMAX, CP_CGLLANDP1_SCALERHS }

## Public Member Functions
Set/get methods
void | setInfinity (double value)
| Aliases for parameter get/set method in the base class CglParam. More...
double | getInfinity () const
void | setEps (double value)
| Epsilon for comparing numbers. More...
double | getEps () const
void | setEpsCoeff (double value)
| Epsilon for zeroing out coefficients. More...
double | getEpsCoeff () const
void | setMaxSupport (int value)
| Maximum support of the cutting planes. More...
int | getMaxSupport () const
void | setMaxSupportAbs (int value)
| Alias for consistency with our naming scheme. More...
int | getMaxSupportAbs () const
int | getMAX_SUPPORT_ABS () const
virtual void | setAway (double value)
| Set AWAY, the minimum distance from being integer used for selecting rows for cut generation; all rows whose pivot variable should be integer but is more than away from integrality will be selected; Default: 0.005. More...
double | getAway () const
| Get value of away. More...
void | setAWAY (double value)
| Aliases. More...
double | getAWAY () const
virtual void | setEPS_ELIM (double value)
| Set the value of EPS_ELIM, epsilon for values of coefficients when eliminating slack variables; Default: 0. More...
double | getEPS_ELIM () const
| Get the value of EPS_ELIM. More...
void | setEpsElim (double value)
| Aliases. More...
double | getEpsElim () const
virtual void | setEPS_RELAX_ABS (double value)
| Set EPS_RELAX_ABS. More...
double | getEPS_RELAX_ABS () const
| Get value of EPS_RELAX_ABS. More...
void | setEpsRelaxAbs (double value)
| Aliases. More...
double | getEpsRelaxAbs () const
virtual void | setEPS_RELAX_REL (double value)
| Set EPS_RELAX_REL. More...
double | getEPS_RELAX_REL () const
| Get value of EPS_RELAX_REL. More...
void | setEpsRelaxRel (double value)
| Aliases. More...
double | getEpsRelaxRel () const
virtual void | setMAXDYN (double value)
double | getMAXDYN () const
| Get the value of MAXDYN. More...
void | setMaxDyn (double value)
| Aliases. More...
double | getMaxDyn () const
virtual void | setMINVIOL (double value)
| Set the value of MINVIOL, the minimum violation for the current basic solution in a generated cut. More...
double | getMINVIOL () const
| Get the value of MINVIOL. More...
void | setMinViol (double value)
| Aliases. More...
double | getMinViol () const
virtual void | setMAX_SUPPORT_REL (double value)
| Set the value of MAX_SUPPORT_REL, the factor contributing to the maximum support relative to the number of columns. More...
double | getMAX_SUPPORT_REL () const
| Get the value of MINVIOL. More...
void | setMaxSupportRel (double value)
| Aliases. More...
double | getMaxSupportRel () const
virtual void | setUSE_INTSLACKS (bool value)
| Set the value of USE_INTSLACKS. More...
bool | getUSE_INTSLACKS () const
| Get the value of USE_INTSLACKS. More...
void | setUseIntSlacks (bool value)
| Aliases. More...
int | getUseIntSlacks () const
virtual void | setCHECK_DUPLICATES (bool value)
| Set the value of CHECK_DUPLICATES. More...
bool | getCHECK_DUPLICATES () const
| Get the value of CHECK_DUPLICATES. More...
void | setCheckDuplicates (bool value)
| Aliases. More...
bool | getCheckDuplicates () const
virtual void | setCLEAN_PROC (CleaningProcedure value)
| Set the value of CLEAN_PROC. More...
CleaningProcedure | getCLEAN_PROC () const
| Get the value of CLEAN_PROC. More...
void | setCleanProc (CleaningProcedure value)
| Aliases. More...
CleaningProcedure | getCleaningProcedure () const
virtual void | setINTEGRAL_SCALE_CONT (bool value)
| Set the value of INTEGRAL_SCALE_CONT. More...
bool | getINTEGRAL_SCALE_CONT () const
| Get the value of INTEGRAL_SCALE_CONT. More...
void | setIntegralScaleCont (bool value)
| Aliases. More...
bool | getIntegralScaleCont () const
virtual void | setENFORCE_SCALING (bool value)
| Set the value of ENFORCE_SCALING. More...
bool | getENFORCE_SCALING () const
| Get the value of ENFORCE_SCALING. More...
void | setEnforceScaling (bool value)
| Aliases. More...
bool | getEnforcescaling () const
Constructors and destructors
| CglGMIParam (double eps=1e-12, double away=0.005, double eps_coeff=1e-11, double eps_elim=0, double eps_relax_abs=1e-11, double eps_relax_rel=1e-13, double max_dyn=1e6, double min_viol=1e-4, int max_supp_abs=1000, double max_supp_rel=0.1, CleaningProcedure clean_proc=CP_CGLLANDP1, bool use_int_slacks=false, bool check_duplicates=false, bool integral_scale_cont=false, bool enforce_scaling=true)
| Default constructor. More...
| CglGMIParam (CglParam &source, double away=0.005, double eps_elim=1e-12, double eps_relax_abs=1e-11, double eps_relax_rel=1e-13, double max_dyn=1e6, double min_viol=1e-4, double max_supp_rel=0.1, CleaningProcedure clean_proc=CP_CGLLANDP1, bool use_int_slacks=false, bool check_duplicates=false, bool integral_scale_cont=false, bool enforce_scaling=true)
| Constructor from CglParam. More...
| CglGMIParam (const CglGMIParam &source)
| Copy constructor. More...
virtual CglGMIParam * | clone () const
| Clone. More...
virtual CglGMIParam & | operator= (const CglGMIParam &rhs)
| Assignment operator. More...
virtual | ~CglGMIParam ()
| Destructor. More...
Public Member Functions inherited from CglParam
virtual void | setINFINIT (const double inf)
| Set INFINIT. More...
double | getINFINIT () const
| Get value of INFINIT. More...
virtual void | setEPS (const double eps)
| Set EPS. More...
double | getEPS () const
| Get value of EPS. More...
virtual void | setEPS_COEFF (const double eps_c)
| Set EPS_COEFF. More...
double | getEPS_COEFF () const
| Get value of EPS_COEFF. More...
virtual void | setMAX_SUPPORT (const int max_s)
| Set MAX_SUPPORT. More...
int | getMAX_SUPPORT () const
| Get value of MAX_SUPPORT. More...
| CglParam (const double inf=COIN_DBL_MAX, const double eps=1e-6, const double eps_c=1e-5, const int max_s=COIN_INT_MAX)
| Default constructor. More...
| CglParam (const CglParam &)
| Copy constructor. More...
CglParam & | operator= (const CglParam &rhs)
| Assignment operator. More...
virtual | ~CglParam ()
| Destructor. More...

## Protected Attributes
Parameters
double | AWAY
| Use row only if pivot variable should be integer but is more than AWAY from being integer. More...
double | EPS_ELIM
| Epsilon for value of coefficients when eliminating slack variables. More...
double | EPS_RELAX_ABS
| Value added to the right hand side of each generated cut to relax it. More...
double | EPS_RELAX_REL
| For a generated cut with right hand side rhs_val, EPS_RELAX_EPS * fabs(rhs_val) is used to relax the constraint. More...
double | MAXDYN
| Maximum ratio between largest and smallest non zero coefficients in a cut. More...
double | MINVIOL
| Minimum violation for the current basic solution in a generated cut. More...
double | MAX_SUPPORT_REL
| Maximum support relative to number of columns. More...
CleaningProcedure | CLEAN_PROC
| Which cleaning procedure should be used? More...
bool | USE_INTSLACKS
| Use integer slacks to generate cuts if USE_INTSLACKS = 1. More...
bool | CHECK_DUPLICATES
| Check for duplicates when adding the cut to the collection? More...
bool | INTEGRAL_SCALE_CONT
| Should we try to rescale cut coefficients on continuous variables so that they become integral, or do we only rescale coefficients on integral variables? Used only by cleaning procedure that try the integral scaling. More...
bool | ENFORCE_SCALING
| Should we discard badly scaled cuts (according to the scaling procedure in use)? If false, CglGMI::scaleCut always returns true, even though it still scales cuts whenever possible, but not cut is rejected for scaling. More...
Protected Attributes inherited from CglParam
double | INFINIT
double | EPS
double | EPS_COEFF
int | MAX_SUPPORT
| Maximum number of non zero coefficients in a generated cut; Default: COIN_INT_MAX. More...

## Detailed Description

Class collecting parameters for the GMI cut generator.

Parameters of the generator are listed below. Modifying the default values for parameters other than the last four might result in invalid cuts.

- MAXDYN: Maximum ratio between largest and smallest non zero coefficients in a cut. See method setMAXDYN().
- EPS_ELIM: Precision for deciding if a coefficient is zero when eliminating slack variables. See method setEPS_ELIM().
- MINVIOL: Minimum violation for the current basic solution in a generated cut. See method setMINVIOL().
- USE_INTSLACKS: Use integer slacks to generate cuts. (not implemented yet, will be in the future). See method setUSE_INTSLACKS().
- AWAY: Look only at basic integer variables whose current value is at least this value away from being integer. See method setAway().
- CHECK_DUPLICATES: Should we check for duplicates when adding a cut to the collection? Can be slow. Default 0 - do not check, add cuts anyway.
- CLEAN_PROC: Cleaning procedure that should be used. Look below at the enumeration CleaningProcedure for possible values.
- INTEGRAL_SCALE_CONT: If we try to scale cut coefficients so that they become integral, do we also scale on continuous variables? Default 0 - do not scale continuous vars. Used only if CLEAN_PROC does integral scaling.
- ENFORCE_SCALING: Discard badly scaled cuts, or keep them (unscaled). Default 1 - yes.

Definition at line 52 of file CglGMIParam.hpp.

## Member Enumeration Documentation

enum CglGMIParam::CleaningProcedure

Enumerator
CP_CGLLANDP1 |
CP_CGLLANDP2 |
CP_CGLREDSPLIT |
CP_INTEGRAL_CUTS |
CP_CGLLANDP1_INT |
CP_CGLLANDP1_SCALEMAX |
CP_CGLLANDP1_SCALERHS |

Definition at line 57 of file CglGMIParam.hpp.

## Constructor & Destructor Documentation

CglGMIParam::CglGMIParam | ( | double | eps = `1e-12`,
|  | double | away = `0.005`,
|  | double | eps_coeff = `1e-11`,
|  | double | eps_elim = `0`,
|  | double | eps_relax_abs = `1e-11`,
|  | double | eps_relax_rel = `1e-13`,
|  | double | max_dyn = `1e6`,
|  | double | min_viol = `1e-4`,
|  | int | max_supp_abs = `1000`,
|  | double | max_supp_rel = `0.1`,
|  | CleaningProcedure | clean_proc = `CP_CGLLANDP1`,
|  | bool | use_int_slacks = `false`,
|  | bool | check_duplicates = `false`,
|  | bool | integral_scale_cont = `false`,
|  | bool | enforce_scaling = `true`
| ) |  |

Default constructor.

CglGMIParam::CglGMIParam | ( | CglParam & | source,
|  | double | away = `0.005`,
|  | double | eps_elim = `1e-12`,
|  | double | eps_relax_abs = `1e-11`,
|  | double | eps_relax_rel = `1e-13`,
|  | double | max_dyn = `1e6`,
|  | double | min_viol = `1e-4`,
|  | double | max_supp_rel = `0.1`,
|  | CleaningProcedure | clean_proc = `CP_CGLLANDP1`,
|  | bool | use_int_slacks = `false`,
|  | bool | check_duplicates = `false`,
|  | bool | integral_scale_cont = `false`,
|  | bool | enforce_scaling = `true`
| ) |  |

Constructor from CglParam.

CglGMIParam::CglGMIParam | ( | const CglGMIParam & | source | ) |

Copy constructor.

virtual CglGMIParam::~CglGMIParam | ( |  | ) |
| virtual

Destructor.

## Member Function Documentation

void CglGMIParam::setInfinity | ( | double | value | ) |
| inline

Aliases for parameter get/set method in the base class CglParam.

Value for Infinity. Default: DBL_MAX

Definition at line 80 of file CglGMIParam.hpp.

double CglGMIParam::getInfinity | ( |  | ) | const
| inline

Definition at line 81 of file CglGMIParam.hpp.

void CglGMIParam::setEps | ( | double | value | ) |
| inline

Epsilon for comparing numbers.

Default: 1.0e-6

Definition at line 84 of file CglGMIParam.hpp.

double CglGMIParam::getEps | ( |  | ) | const
| inline

Definition at line 85 of file CglGMIParam.hpp.

void CglGMIParam::setEpsCoeff | ( | double | value | ) |
| inline

Epsilon for zeroing out coefficients.

Default: 1.0e-5

Definition at line 88 of file CglGMIParam.hpp.

double CglGMIParam::getEpsCoeff | ( |  | ) | const
| inline

Definition at line 89 of file CglGMIParam.hpp.

void CglGMIParam::setMaxSupport | ( | int | value | ) |
| inline

Maximum support of the cutting planes.

Default: INT_MAX

Definition at line 92 of file CglGMIParam.hpp.

int CglGMIParam::getMaxSupport | ( |  | ) | const
| inline

Definition at line 93 of file CglGMIParam.hpp.

void CglGMIParam::setMaxSupportAbs | ( | int | value | ) |
| inline

Alias for consistency with our naming scheme.

Definition at line 95 of file CglGMIParam.hpp.

int CglGMIParam::getMaxSupportAbs | ( |  | ) | const
| inline

Definition at line 96 of file CglGMIParam.hpp.

int CglGMIParam::getMAX_SUPPORT_ABS | ( |  | ) | const
| inline

Definition at line 97 of file CglGMIParam.hpp.

virtual void CglGMIParam::setAway | ( | double | value | ) |
| virtual

Set AWAY, the minimum distance from being integer used for selecting rows for cut generation; all rows whose pivot variable should be integer but is more than away from integrality will be selected; Default: 0.005.

double CglGMIParam::getAway | ( |  | ) | const
| inline

Get value of away.

Definition at line 105 of file CglGMIParam.hpp.

void CglGMIParam::setAWAY | ( | double | value | ) |
| inline

Aliases.

Definition at line 107 of file CglGMIParam.hpp.

double CglGMIParam::getAWAY | ( |  | ) | const
| inline

Definition at line 108 of file CglGMIParam.hpp.

virtual void CglGMIParam::setEPS_ELIM | ( | double | value | ) |
| virtual

Set the value of EPS_ELIM, epsilon for values of coefficients when eliminating slack variables; Default: 0.

double CglGMIParam::getEPS_ELIM | ( |  | ) | const
| inline

Get the value of EPS_ELIM.

Definition at line 115 of file CglGMIParam.hpp.

void CglGMIParam::setEpsElim | ( | double | value | ) |
| inline

Aliases.

Definition at line 117 of file CglGMIParam.hpp.

double CglGMIParam::getEpsElim | ( |  | ) | const
| inline

Definition at line 118 of file CglGMIParam.hpp.

virtual void CglGMIParam::setEPS_RELAX_ABS | ( | double | value | ) |
| virtual

Set EPS_RELAX_ABS.

double CglGMIParam::getEPS_RELAX_ABS | ( |  | ) | const
| inline

Get value of EPS_RELAX_ABS.

Definition at line 123 of file CglGMIParam.hpp.

void CglGMIParam::setEpsRelaxAbs | ( | double | value | ) |
| inline

Aliases.

Definition at line 125 of file CglGMIParam.hpp.

double CglGMIParam::getEpsRelaxAbs | ( |  | ) | const
| inline

Definition at line 126 of file CglGMIParam.hpp.

virtual void CglGMIParam::setEPS_RELAX_REL | ( | double | value | ) |
| virtual

Set EPS_RELAX_REL.

double CglGMIParam::getEPS_RELAX_REL | ( |  | ) | const
| inline

Get value of EPS_RELAX_REL.

Definition at line 131 of file CglGMIParam.hpp.

void CglGMIParam::setEpsRelaxRel | ( | double | value | ) |
| inline

Aliases.

Definition at line 133 of file CglGMIParam.hpp.

double CglGMIParam::getEpsRelaxRel | ( |  | ) | const
| inline

Definition at line 134 of file CglGMIParam.hpp.

virtual void CglGMIParam::setMAXDYN | ( | double | value | ) |
| virtual

double CglGMIParam::getMAXDYN | ( |  | ) | const
| inline

Get the value of MAXDYN.

Definition at line 140 of file CglGMIParam.hpp.

void CglGMIParam::setMaxDyn | ( | double | value | ) |
| inline

Aliases.

Definition at line 142 of file CglGMIParam.hpp.

double CglGMIParam::getMaxDyn | ( |  | ) | const
| inline

Definition at line 143 of file CglGMIParam.hpp.

virtual void CglGMIParam::setMINVIOL | ( | double | value | ) |
| virtual

Set the value of MINVIOL, the minimum violation for the current basic solution in a generated cut.

Default: 1e-7

double CglGMIParam::getMINVIOL | ( |  | ) | const
| inline

Get the value of MINVIOL.

Definition at line 149 of file CglGMIParam.hpp.

void CglGMIParam::setMinViol | ( | double | value | ) |
| inline

Aliases.

Definition at line 151 of file CglGMIParam.hpp.

double CglGMIParam::getMinViol | ( |  | ) | const
| inline

Definition at line 152 of file CglGMIParam.hpp.

virtual void CglGMIParam::setMAX_SUPPORT_REL | ( | double | value | ) |
| virtual

Set the value of MAX_SUPPORT_REL, the factor contributing to the maximum support relative to the number of columns.

Maximum allowed support is: MAX_SUPPORT_ABS + MAX_SUPPORT_REL*ncols. Default: 0.1

double CglGMIParam::getMAX_SUPPORT_REL | ( |  | ) | const
| inline

Get the value of MINVIOL.

Definition at line 160 of file CglGMIParam.hpp.

void CglGMIParam::setMaxSupportRel | ( | double | value | ) |
| inline

Aliases.

Definition at line 162 of file CglGMIParam.hpp.

double CglGMIParam::getMaxSupportRel | ( |  | ) | const
| inline

Definition at line 163 of file CglGMIParam.hpp.

virtual void CglGMIParam::setUSE_INTSLACKS | ( | bool | value | ) |
| virtual

Set the value of USE_INTSLACKS.

Default: 0

bool CglGMIParam::getUSE_INTSLACKS | ( |  | ) | const
| inline

Get the value of USE_INTSLACKS.

Definition at line 168 of file CglGMIParam.hpp.

void CglGMIParam::setUseIntSlacks | ( | bool | value | ) |
| inline

Aliases.

Definition at line 170 of file CglGMIParam.hpp.

int CglGMIParam::getUseIntSlacks | ( |  | ) | const
| inline

Definition at line 171 of file CglGMIParam.hpp.

virtual void CglGMIParam::setCHECK_DUPLICATES | ( | bool | value | ) |
| virtual

Set the value of CHECK_DUPLICATES.

Default: 0

bool CglGMIParam::getCHECK_DUPLICATES | ( |  | ) | const
| inline

Get the value of CHECK_DUPLICATES.

Definition at line 176 of file CglGMIParam.hpp.

void CglGMIParam::setCheckDuplicates | ( | bool | value | ) |
| inline

Aliases.

Definition at line 178 of file CglGMIParam.hpp.

bool CglGMIParam::getCheckDuplicates | ( |  | ) | const
| inline

Definition at line 179 of file CglGMIParam.hpp.

virtual void CglGMIParam::setCLEAN_PROC | ( | CleaningProcedure | value | ) |
| virtual

Set the value of CLEAN_PROC.

Default: CP_CGLLANDP1

CleaningProcedure CglGMIParam::getCLEAN_PROC | ( |  | ) | const
| inline

Get the value of CLEAN_PROC.

Definition at line 184 of file CglGMIParam.hpp.

void CglGMIParam::setCleanProc | ( | CleaningProcedure | value | ) |
| inline

Aliases.

Definition at line 186 of file CglGMIParam.hpp.

CleaningProcedure CglGMIParam::getCleaningProcedure | ( |  | ) | const
| inline

Definition at line 187 of file CglGMIParam.hpp.

virtual void CglGMIParam::setINTEGRAL_SCALE_CONT | ( | bool | value | ) |
| virtual

Set the value of INTEGRAL_SCALE_CONT.

Default: 0

bool CglGMIParam::getINTEGRAL_SCALE_CONT | ( |  | ) | const
| inline

Get the value of INTEGRAL_SCALE_CONT.

Definition at line 192 of file CglGMIParam.hpp.

void CglGMIParam::setIntegralScaleCont | ( | bool | value | ) |
| inline

Aliases.

Definition at line 194 of file CglGMIParam.hpp.

bool CglGMIParam::getIntegralScaleCont | ( |  | ) | const
| inline

Definition at line 195 of file CglGMIParam.hpp.

virtual void CglGMIParam::setENFORCE_SCALING | ( | bool | value | ) |
| virtual

Set the value of ENFORCE_SCALING.

Default: 1

bool CglGMIParam::getENFORCE_SCALING | ( |  | ) | const
| inline

Get the value of ENFORCE_SCALING.

Definition at line 200 of file CglGMIParam.hpp.

void CglGMIParam::setEnforceScaling | ( | bool | value | ) |
| inline

Aliases.

Definition at line 202 of file CglGMIParam.hpp.

bool CglGMIParam::getEnforcescaling | ( |  | ) | const
| inline

Definition at line 203 of file CglGMIParam.hpp.

virtual CglGMIParam* CglGMIParam::clone | ( |  | ) | const
| virtual

Clone.

Reimplemented from CglParam.

virtual CglGMIParam& CglGMIParam::operator= | ( | const CglGMIParam & | rhs | ) |
| virtual

Assignment operator.

## Member Data Documentation

double CglGMIParam::AWAY
| protected

Use row only if pivot variable should be integer but is more than AWAY from being integer.

Definition at line 261 of file CglGMIParam.hpp.

double CglGMIParam::EPS_ELIM
| protected

Epsilon for value of coefficients when eliminating slack variables.

Default: 0.

Definition at line 265 of file CglGMIParam.hpp.

double CglGMIParam::EPS_RELAX_ABS
| protected

Value added to the right hand side of each generated cut to relax it.

Default: 1e-11

Definition at line 269 of file CglGMIParam.hpp.

double CglGMIParam::EPS_RELAX_REL
| protected

For a generated cut with right hand side rhs_val, EPS_RELAX_EPS * fabs(rhs_val) is used to relax the constraint.

Default: 1.e-13

Definition at line 274 of file CglGMIParam.hpp.

double CglGMIParam::MAXDYN
| protected

Maximum ratio between largest and smallest non zero coefficients in a cut.

Default: 1e6.

Definition at line 278 of file CglGMIParam.hpp.

double CglGMIParam::MINVIOL
| protected

Minimum violation for the current basic solution in a generated cut.

Default: 1e-4.

Definition at line 282 of file CglGMIParam.hpp.

double CglGMIParam::MAX_SUPPORT_REL
| protected

Maximum support relative to number of columns.

Must be between 0 and 1. Default: 0.

Definition at line 286 of file CglGMIParam.hpp.

CleaningProcedure CglGMIParam::CLEAN_PROC
| protected

Which cleaning procedure should be used?

Definition at line 289 of file CglGMIParam.hpp.

bool CglGMIParam::USE_INTSLACKS
| protected

Use integer slacks to generate cuts if USE_INTSLACKS = 1.

Default: 0.

Definition at line 292 of file CglGMIParam.hpp.

bool CglGMIParam::CHECK_DUPLICATES
| protected

Check for duplicates when adding the cut to the collection?

Definition at line 295 of file CglGMIParam.hpp.

bool CglGMIParam::INTEGRAL_SCALE_CONT
| protected

Should we try to rescale cut coefficients on continuous variables so that they become integral, or do we only rescale coefficients on integral variables? Used only by cleaning procedure that try the integral scaling.

Definition at line 301 of file CglGMIParam.hpp.

bool CglGMIParam::ENFORCE_SCALING
| protected

Should we discard badly scaled cuts (according to the scaling procedure in use)? If false, CglGMI::scaleCut always returns true, even though it still scales cuts whenever possible, but not cut is rejected for scaling.

Default true. Used only by cleaning procedure that try to scale.

Definition at line 308 of file CglGMIParam.hpp.

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

- /tmp/Cgl-0.60.2/Cgl/src/CglGMI/CglGMIParam.hpp