首页> 外文OA文献 >An evolutionary approach to solving a new integrated quay crane assignment and quay crane scheduling mathematical model
【2h】

An evolutionary approach to solving a new integrated quay crane assignment and quay crane scheduling mathematical model

机译:解决新的集成式码头起重机分配和码头起重机调度数学模型的进化方法

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

This paper puts forward an integrated optimisation model that combines two distinct problems arising in container terminals, namely the Quay Crane Assignment Problem, and the Quay Crane Scheduling Problem. The model is of the mixed-integer programming type with the objective being to minimise the tardiness of vessels. Although exact solutions can be found to the problem using Branch-and-Cut, for instance, they are costly in time when instances are of realistic sizes. To overcome the computationaludburden of large scale instances, an adapted Genetic Algorithm, is used. Small to medium size instances of the combined model have been solved with both the Genetic Algorithm and the CPLEX implementationudof Branch-and-Cut. Larger size instances, however, could only be solved approximately in acceptable times with the Genetic Algorithm. Computational results are included and discussed.
机译:本文提出了一个综合优化模型,该模型结合了集装箱码头出现的两个不同问题,即码头起重机分配问题和码头起重机调度问题。该模型是混合整数编程类型的,其目的是最小化容器的拖延性。例如,尽管可以使用“分支并剪切”找到精确的解决方案,但是当实例具有实际大小时,它们在时间上的成本很高。为了克服大规模实例的计算负担,使用了一种经过改进的遗传算法。组合模型的中小型实例已经使用遗传算法和CPLEX实现 udof分支剪切法解决了。但是,使用遗传算法只能在可接受的时间内解决较大尺寸的实例。计算结果包括在内并进行了讨论。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号