Priority Orders and Branching Directions

ILOG CPLEX 11.0 User's Manual > Languages and APIs > ILOG Concert Technology for Java Users > Controlling ILOG CPLEX Optimizers > Priority Orders and Branching Directions

Priority Orders and Branching Directions

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When CPLEX is solving a MIP, another important way for you to control the solution process is by providing priority orders and branching directions for variables. The methods for doing so are:

IloCplex.setDirection,
IloCplex.setDirections,
IloCplex.setPriority, and
IloCplex.setPriorities.

Priority orders and branch directions allow you to control the branching performed during branch & cut in a static way.

Dynamic control of the solution process of MIPs is provided through goals or control callbacks. Goals are discussed for C++ in Using Goals. Control callbacks are discussed in Using Optimization Callbacks. (Java goals and callbacks are similar to the C++ goals and callbacks.) Goals and callbacks allow you to control the solution process when solving MIPs based on information generated during the solution process itself. Goals and Callbacks: a Comparison contrasts the advantages of both.

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