摘要：This paper deals with the problem of scheduling tasks in flow shop environment with the presence of operators. The assignment of operators changes according to the end of operation changing mode. We investigate two problems: the first is that of handling simultaneously the operators and the tasks while in the second, the assignment of operators is made subject to a fixed task sequence. We seek to quantify the impact of operators and see to what extent adding an operator can improve the quality of a solution. We found that the utility of adding an operator depends on the size of instances, particularly on the number of machines.
关键词：KeywordsSchedulingoperatorsmakespanflow shopsend of operation changing mode
