针对传统定量数理统计分析受“小样本”、“贫信息”等不确定因素影响较大的局限性,通过原始数据无量纲化处理,采用线性变换及科学有效判定分辨系数的方法,确定了改进的关联系数计算公式,结合模糊数学中的贴近度原理,给出了一种改进的灰色关联度分析理论模型,并应用该方法对导弹研制费用驱动因子进行了实例分析。 In view of the limitations of the traditional quantitative mathematical statistics analysis, which are greatly affected by the uncertainties such as “small sample” and “poor information”, the method of linear transformation and scientifically effective resolution coefficient determination , An improved calculation formula of correlation coefficient was determined. An improved theoretical model of gray relational degree analysis was given in combination with the principle of closeness in fuzzy mathematics. The method was used to analyze the cost drivers of missile development.