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讨论了带有4项惩罚指标的提前／拖延调度问题，目的是确定最优公共交货期和确定最优排序．给出了最优公共交货期的确定方法，提出了联合惩罚因子的概念，并讨论了最优解的结构．
Discusses an early / late scheduling problem with four penalties, with the objective of determining the optimal delivery date and determining the optimal order. Gives the method of determining the optimal delivery date, puts forward the concept of joint punishment factor, and discusses the structure of the optimal solution.