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在城市交通网络中,已知路径的时间属性与费用属性,分析了出行者对路径有、无主观偏好时的路径选择问题。当无偏好时,利用信息熵理论和多属性综合决策方法给出了获得路径综合属性值的计算模型;当有偏好时,对不同的路径通过互反判断矩阵给出主观偏好,然后利用互反判断矩阵之间的偏差建立关于属性权重向量的优化模型,并采用解析的方法对模型进行求解,得到每个属性的权重,从而进一步计算出每条路径的综合属性值,属性值最大的路径为最优路径。分析结果表明:在无偏好时最佳选择路径2的综合属性值为0.918;在有偏好时最佳选择路径4的综合属性值为0.965,与无偏好的相差较大,且6条路径的选择次序不同。可见,出行者的主观偏好对路径选择结果有较大的影响。
In the urban traffic network, the time attributes and cost attributes of the known routes are analyzed, and the route selection problems of the travelers with or without subjective preferences are analyzed. When there is no preference, the computing model of obtaining the comprehensive property value of the route is given by using information entropy theory and multi-attribute comprehensive decision making method. When there is a preference, subjective preferences are given to different paths through the reciprocal judgment matrix, Judge the deviation between the matrix to establish the optimization model of the attribute weight vector, and use the analytical method to solve the model, get the weight of each attribute, so as to further calculate the comprehensive attribute value of each path, the path of the attribute value is Optimal path. The analysis results show that the comprehensive property value of the best alternative route 2 with no preference is 0.918, the comprehensive property value of the best alternative route 4 with preference is 0.965, the difference with the non-preference is larger, and the choice of six routes Different order. It can be seen that the subjective preferences of travelers have a greater impact on the results of the path selection.