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基于路段关联的随机网络交通模型

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摘要 在网络需求和供给条件都是随机的情况下,提出了一个出行路径选择模型。模型中考虑出行者的感知误差,使用基于Logit的随机用户均衡框架来表征网络中出行者的路径选择。网络中交通需求服从对数正态分布,路段容量服从均匀分布。相邻路段的路段流和路段出行时间之间存在关联关系,用两个路段的协方差参数来表示。推导了由随机需求和随机供给导致的随机路段流和随机路径流的分布形式,采用变分不等式技术构建了路段关联下的随机网络随机用户均衡模型。给出一个求解算法来求解该模型,并对一小型网络进行测试,测试结果表明模型能够正确地反映出行者在路段关联的随机网络下的路径选择行为。
出处 《湖南交通科技》 2015年第4期143-150,165,共9页 Hunan Communication Science and Technology
基金 国家自然科学基金(No.61273042) 上海市教委科研创新项目(No.12ZZ147)
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