THE COEFFICIENT OF VARIATION AS A FACTOR IN MRP RESEARCH
研究了变异系数作为衡量需求波动性的指标在物料需求计划研究中的稳健性，通过模拟比较不同批量技术，发现变异系数在需求序列生成和分组方式下表现稳健。
ABSTRACT This paper investigates the use of the coefficient of variation (CV) as a measure of requirements lumpiness (the amount of variation in requirements from period to period) in material requirements planning (MRP) research. CV is used as a factor in MRP research even though it is limited as a measure. Any sequence of requirements will have a unique CV, but any CV can represent a variety of requirements sequences. This limitation raises questions concerning the robustness of CV as a measure. In this paper, two other aspects of the requirements sequence for a given CV are investigated: the procedure used to generate the requirements and the manner in which the requirements are grouped. A simulation comparison of selected lot‐sizing techniques is used to conduct the investigation. With respect to these two (new) aspects of the requirements sequence, CV appears to be a robust measure.