Research Article
Exact and Heuristic Solutions to Minimize Total Waiting Time in the Blood Products Distribution Problem
Algorithm 4
The outline of hybrid algorithm.
Initial procedure GRASP, report the best found solution ; | Initial procedure SA + VNS; | Repeat | Local search: apply VNS procedure with the five neighborhoods, report the incumbent | solution ; | Calculate ; | If Δ < 0 then ; | Elseif random(0,1) < , then ; | Else Reject , and modify temperature; | Until stopping criterion is met; |
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