The Performance of MRP Purchase Lot‐Size Procedures Under Actual Multiple Purchase Discount Conditions
用制造企业的实际数据测试了多种MRP采购批量启发式方法，发现文献中的一种方法始终优于企业现行政策和其他模型，但有时企业政策也比某些文献模型更经济。
ABSTRACT Several heuristic procedures for purchase lot sizing in material requirements planning (MRP) systems were tested with actual data from manufacturing companies. Information provided by the companies for each purchased item included the estimated requirements and costs, the price discount structure from the vendor, and the actual company ordering policy. Simulation tests for each purchased item involved comparisons of several purchase lot‐size procedures from the research literature along with the actual procedure used by the company providing the data. Results indicate that one of the heuristic lot‐size procedures from the literature consistently outperformed the company policies as well as all other models tested. Another noteworthy result is that, in some cases, the actual company order policy was more cost‐effective than some of the models from the research literature.