ILOG CPLEX 11.0 Parameters Reference Manual > > Alphabetic List of Parameters > MIP probing level

C Name

CPX_PARAM_PROBE

C++ Name

Probe

Java Name

Probe

.NET Name

Probe

InteractiveOptimizer

mip strategy probe

Identifier

2042

Description

Sets the amount of probing on variables to be performed before MIP branching. Higher settings perform more probing. Probing can be very powerful but very time-consuming at the start. Setting the parameter to values above the default of 0 (automatic) can result in dramatic reductions or dramatic increases in solution time, depending on the model.

Values

Value 
Meaning 
-1 
No probing 
0 
Automatic: let CPLEX choose; default  
1 
Moderate probing level 
2 
Aggressive probing level 
3 
Very aggressive probing level