Node heuristic

Describes the heuristic applied at nodes by the MIP optimizer.

The node heuristic employs techniques to try to construct a feasible solution from the current (fractional) branch-and-cut node. This feature is controlled by the parameter HeurFreq . At its default value of 0 (zero), CPLEX dynamically sets the frequency with which the heuristic is invoked. The setting -1 turns the feature off. A positive value specifies the frequency (in node count) with which the heuristic will be called. For example, if the HeurFreq parameter is set to 20, then the node heuristic will be applied at node 0, node 20, node 40, and so on.