Heuristics
ILOG CPLEX provides a heuristic to find integer solutions at nodes during the branch & cut procedure.
This feature is controlled by the parameter HeurFreq. At its default value of 0, ILOG CPLEX dynamically determines the frequency with which the heuristic is invoked. The value of -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.
