ILOG CPLEX 10.2 Parameters Reference Manual > > Alphabetic List of Parameters > Simplex perturbation switch

C Name

CPX_PARAM_PERIND (int)

C++ Name

PerInd (bool)

Java Name

PerInd

.NET Name

PerInd

InteractiveOptimizer

simplex perturbation

Identifier

1027

Description

Setting this parameter to 1 (one) causes all problems to be automatically perturbed as optimization begins. A setting of 0 (zero) allows CPLEX to determine dynamically, during solution, whether progress is slow enough to merit a perturbation. The situations in which a setting of 1 helps are rare and restricted to problems that exhibit extreme degeneracy.

Values

Value 
bool 
Symbol 
Meaning 
false  
CPX_OFF  
Automatic: let CPLEX choose; default  
true 
CPX_ON 
Turn on perturbation from beginning