基于变权和相对差异函数的地铁运营安全管理评价

Evaluation of Subway Operation Safety Management Based on Variable Weight and Relative Difference Function

针对地铁运营安全评价标准及传统综合评价方法在指标值、隶属度确定和指标权重上的不足,引入相对差异函数和相变权理论,建立地铁运营安全风险评价指标体系及其指标分值,用变权方法调整已建立的指标常权,用相对差异函数确定单因素对各安全等级的隶属度,以优化和显示某些因素在体系中的重要性。理论分析和实例计算表明,引入的这两种方法不仅可行,而且使评价结果更加合理。

In view of the shortcomings of metro operation safety evaluation standard and traditional comprehensive evaluation method in index value,membership degree determination and index weight,relative difference function and change weight theory are introduced to establish metro operation safety risk evaluation index system and its index score,and the established index weight is adjusted by variable weight method.Relative difference function determines the membership degree of single factor to each safety level to optimize and show the importance of some factors in the system.Theoretical analysis and practical calculation show that the two methods are not only feasible,but also more reasonable.