文档介绍：Cross-Nested Logit模型在交通方式划分中的应用研究 237 Cross—NestedLogit模型在交通方式划分中的应用研究王谷过秀成(东南大学交通学院南京210096) 摘要:Logit离散选择模型具有结构简单、使用方便的特点,在经济、交通等领域得到了广泛的应用。但是Logit 模型的随机项独立、同分布假设限制了其应用的进一步拓展。围绕上述问题,在保留Logit模型优良特性的同时,很多学者对Logit模型的改进工作做了犬量研究。本文通过G(y)函数的引入,研究了Logit模型的改进机理,以度MuhinomialLogit(MNL)模型、NestedLogit(NL)模型、Cross-NestedLogit(o儿)模型之间的内在联系,L模型处理离散选择问题的理论优势。最后通过工程案例比较了三种模型的优缺点,L模型对出行方式选择行为的描述较MNL、NL模型更符合实际情况。关键词:离散选择模型MNL模型NL模型COSS-Nested Logit模型出行方式选择 Research and Application ofCross-Nested LogitModel inTraffic Mode-split Wang Gu Guo Xiucheng (Transportation College Southeast University Naniing 210096) Abstract:Due tothesimpleness and convenience 0fLogit Model,it widely used inthefiledof econo- my and theprecondition thatthe random term should beindependently and dentieally distributed limitsthescope on the problem above and based on the good characteristics ofLogit Model,the paper probes intoitsameliorating mechanism by theway ofintro- ducing theFunction G(y),and studies the inherent relations ofMultinomial Logit Model,Nested Logit Model and Cross—Nested LogitModel,which reflects the theoretical advantages ofthe models indealing with thediscrete choice length,the advantages and defects ofthree models pared through an example ofthe engineering result indicates that Cross—Nested Logit Model more suitable forthechoice beha