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A time-varying lot sizes approach for the economic lot scheduling problem with returns

机译:带有收益的经济批量计划问题的时变批量方法

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摘要

We consider the economic lot scheduling problem with returns by assuming that each item is returned by a constant rate of demand. The goal is to find production frequencies, production sequences, production times, as well as idle times for several items subject to returns at a single facility. We propose a heu ristic algorithm based on a time-varying (TV) lot sizes approach. The problem is decomposed into two distinct portions: in the first, we find a combinatorial part (production frequencies and sequences) and in the second, we determine a continuous part (production and idle times) in a specific production sequence. We report computational results that show that, in many cases, the proposed TV lot sizes approach with consideration of returns yields a relatively minor error.
机译:我们通过假设每个项目都以恒定的需求率返回来考虑带有收益的经济批次计划问题。目标是找到要在单个工厂退货的几件商品的生产频率,生产顺序,生产时间以及闲置时间。我们提出一种基于时变(TV)批量方法的启发式算法。该问题分解为两个不同的部分:第一部分,我们找到组合的部分(生产频率和顺序),第二部分中,我们确定特定生产顺序中的连续部分(生产和闲置时间)。我们报告的计算结果表明,在许多情况下,建议的电视批量大小方法在考虑回报的情况下产生的误差相对较小。

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