In simple flow shop problems, each machine operation center includes just one machine. If at least one machine center includes more than one machine, the scheduling problem becomes a flexible flow-shop problem. In [14], we have demonstrated howfuzzy concepts can easily be used in the Palmer algorithm for managing uncertain scheduling on flow-shop problems. This paper extends application to fuzzy flexible flow-shops with more than two machine centers. A heuristic fuzzy flexible flow-shopscheduling algorithm is then designed since optimal solutions seem unnecessary for uncertain environments.
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