基于前景理论的双维度条件下动态路径选择

Modeling and Analysis of Path Selection with Two Dimensional Condition Based on Prospect Theory

随着人们生活水平的提高,对出行过程的要求也有了新的标准,而目前在单维度基础上进行的出行路径选择研究已经逐渐偏离出行者的真实需求。为了更好的满足出行者的出行需求,本文以前景理论为基础,从费用维度与舒适维度两个层面对路径进行综合考察,即在考虑感知费用的前提下引入舒适度函数,并分别以动态修正费用函数与舒适度修正函数为参照点进行收益与损失判定,在得到相应前景值后,根据用户对出行过程的费用与舒适度偏重系数计算出路径综合前景值,并以此作为路径选择的判定基础。最后通过一个具体算例对模型进行验证与分析,结果显示相对于单维度的路径选择模型双维度判断更符合实际。

With the improvement of people＇s living standard, requirements for travel process also have new standards, and the research on travel path selection based on single dimension has gradually deviated from the real needs of travelers. In order to better meet the traveler＇s travel needs, this paper that based on the prospect theory makes a comprehensive investigation of the path from two dimensions： cost dimension and comfort dimension. The comfort function is introduced on the premise of perceived cost, and the expected cost and expected comfort are taken as the reference point to judge the return and loss, after obtaining the corresponding foreground value, the path synthesis prospect value is calculated according to the coefficient of the customer＇s travel cost and com^brt coefficient, which is used as the judgment basis of route selection. Finally, the paper verifies and analyzes the model by a specific example. The results show that the two dimension judgment of the path selection model is more in line with the real needs of the user than the single dimension path choice model.