Some Insights into Proportional Lot Sizing and Scheduling
本文研究比例批量排产与调度问题，分析其特性，建立混合整数规划模型，并与文献中其他模型关联，讨论求解困难的原因，对开发启发式或精确算法有参考价值。
This paper deais with proportional lot sizing and scheduling (PLSP) and gives some insights into the properties of this problem.Such insig hts may be useful for dev eloping heuristic aßd/or exact Solut ion procedur es.The emphasis of this paper is on thejmult i-level, multi-machiiie^ case.We provide a mixed-integer programming modef," relate it to other models that can be found in the literature, and discu ss characteristics which make solving instances of the PLSP-rnodel beco me a hard task.