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An evolutionary approach to a combined mixed integer programming model of seaside operations as arise in container ports

机译:集装箱港口出现的海边作业组合混合整数规划模型的进化方法

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摘要

This paper puts forward an integrated optimisation model that combines three distinct problems, namely berth allocation, quay crane assignment, and quay crane scheduling that arise in container ports. Each one of these problems is difficult to solve in its own right. However, solving them individually leads almost surely to sub-optimal solutions. Hence, it is desirable to solve them in a combined form. The model is of the mixed-integer programming type with the objective being to minimize the tardiness of vessels and reduce the cost of berthing. Experimental results show that relatively small instances of the proposed model can be solved exactly using CPLEX. Large scale instances, however, can only be solved in reasonable times using heuristics. Here, an implementation of the genetic algorithm is considered. The effectiveness of this implementation is tested against CPLEX on small to medium size instances of the combined model. Larger size instances were also solved with the genetic algorithm, showing that this approach is capable of finding the optimal or near optimal solutions in realistic times.
机译:本文提出了一个综合优化模型,该模型综合了集装箱港口中出现的三个不同问题,即泊位分配,码头起重机分配和码头起重机调度。这些问题中的每一个都很难单独解决。但是,单独解决它们几乎肯定会导致次优解决方案。因此,期望以组合形式解决它们。该模型是混合整数编程类型的,其目的是最大程度地减少船舶的拖船时间并降低泊位成本。实验结果表明,使用CPLEX可以精确地解决所提出模型的较小实例。但是,大型实例只能使用启发式方法在合理的时间内解决。在此,考虑遗传算法的实现。针对CPLEX在组合模型的中小型实例上测试了此实现的有效性。更大的实例也可以通过遗传算法求解,这表明该方法能够在现实时期找到最优或接近最优的解决方案。

著录项

  • 作者

    Salhi A; Alsoufi G; Yang X;

  • 作者单位
  • 年度 2017
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  • 原文格式 PDF
  • 正文语种 en
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