摘要
模糊现象客观地存在于路径选择过程,本文考虑到路径之间的模糊优先关系,在模糊用户均衡条件的假设下,提出了一种新的路径选择模型。首先采用均值面积度量法度量路径的感知阻抗找到具有最小感知阻抗的路径,并通过优势检测产生出行者备选路径集合;然后在构造模糊优先关系矩阵的基础上计算备选路径的优先度,由此得到路径被选择的可能性。该模型可看作是Logit模型的一般化,并且在路径感知阻抗难以用模糊变量描述的情况下,仍能通过两两比较路径的优先关系计算各条路径被选择的可能性。
Fuzzy phenomena often occur in the process of travel decision-making. Based on fuzzy priority relation between paths, a new route choice model is provided under assumption of fuzzy user equilibrium. Firstly, after the route with minimal perceived impedance is obtained with mean area method, a choice set of paths is produced by dominance check. Based on the fuzzy priority relation array, priority values of the choice paths are computed, and the choice possibilities of paths can be obtained. The model can be viewed as a generalization of classical Logit model. Where perceived impedance of path is difficult to be described with fuzzy variable, the choice possibility of every path can be obtained by comparing priority relation between a pair of paths with the model.
出处
《公路交通科技》
CAS
CSCD
北大核心
2007年第4期126-128,144,共4页
Journal of Highway and Transportation Research and Development
基金
国家自然科学基金资助项目(70673016)
中国博士后科研基金资助项目(20060390225)
关键词
交通工程
路径选择模型
模糊优先关系
出行行为
traffic engineering
route choice model
fuzzy priority relation
travel behavior
