ILOG CPLEX 11.0 Parameters Reference Manual > > Alphabetic List of Parameters > MIQCP strategy switch

C Name

CPX_PARAM_MIQCPSTRAT

C++ Name

MIQCPStrat

Java Name

MIQCPStrat

.NET Name

MIQCPStrat

InteractiveOptimizer

mip strategy miqcpstrat

Identifier

2110

Description

Sets the strategy that CPLEX uses to solve a quadratically constrained mixed integer program (MIQCP).

This parameter controls how MIQCPs ( that is, mixed integer programs with one or more constraints including quadratic terms) are solved. For more detail about the types of quadratically constrained models that CPLEX solves, see Identifying a Quadratically Constrained Program (QCP) in the CPLEX User's Manual.

At the default setting of 0 (zero), CPLEX automatically chooses a strategy.

When you set this parameter to the value 1 (one), you tell CPLEX to solve a QCP relaxation of the model at each node.

When you set this parameter to the value 2, you tell CPLEX to attempt to solve an LP relaxation of the model at each node.

For some models, the setting 2 may be more effective than 1 (one). You may need to experiment with this parameter to determine the best setting for your model.

Values

Value 
Meaning 
Automatic: let CPLEX choose; default 
Solve a QCP node relaxation at each node 
Solve an LP node relaxation at each node