Fuzzy CDS scheduling for flow shops with more than two machines

We have demonstrated how fuzzy concepts can easily be used in the Johnson algorithm for managing uncertain scheduling on two-machine flow shops. This paper extends application to fuzzy flow shops with more than two machines. A new fuzzy heuristic flow-shop scheduling algorithm (the fuzzy CDS algorithm) is then designed since optimal solutions seem unnecessary for uncertain environments. Also, the conventional CDS algorithm is shown as a special case of the fuzzy CDS algorithm with special membership functions being assigned.