机场到港旅客换乘时间效率评价指标优选

换乘时间效率评价对提升机场综合交通的换乘效率有着重大意义，传统的指标优选方法应用在民航机场到港旅客换乘评价中难以真实反映指标关系并且缺乏指标筛选规则。针对上述问题，根据指标体系中目标层、因素层、指标层各自与指标的关联特征，抽象出指标的重要性、关联均衡性、独立性3种数据关系，并使用DS证据理论融合得到指标综合关系。基于指标综合关系和综合评价方法，定义评估精度作为筛选指标的理论支撑，并设计算法构建优选模型。使用国内37个机场的到港旅客换乘时间数据进行实证分析，结果表明:指标综合关系能够更精确地反映指标关系，优化了指标排序，比基于主成分分析和最大互信息系数的指标排序更优异，能剔除更多冗余指标。评估精度将可剔除的指标直观展示出来，为筛选指标提供了切实依据，完善了指标优选模型。 

Optimization of transfer time efficiency evaluation index for airport arriving passengers

The evaluation of transfer time efficiency is of great significance to improve the transfer efficiency of airport comprehensive transportation. The traditional index optimization method is difficult to truly reflect the index relationship and lacks of index screening rules in the transfer evaluation of inbound passengers at civil aviation airports. In light of the aforementioned issues, according to the target layer, factor layer, index layer and the correlation characteristics of indicators in the index system, this paper abstracts the importance, correlation equilibrium and independence of indicators, and uses DS evidence theory to fuse the comprehensive relationship of indicators. Based on the comprehensive relationship of indicators and the comprehensive evaluation method, evaluation accuracy is defined as the theoretical support of screening indicators, and the algorithm is designed to build the optimization model. Finally, the paper uses the data of 37 domestic airports to make an empirical analysis. The results show that the index comprehensive relationship can reflect the index relationship more accurately and optimize the index ranking, which is better than the index ranking based on principal component analysis and maximum mutual information coefficient, and can eliminate more redundant indexes. The evaluation accuracy identifies the indexes that may be intuitively eliminated, offering a useful basis for choosing indexes and enhancing the index optimization model.