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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
For each approach a different optimization model and some solution algorithms are proposed; both models and algorithms are based on the assumptions of within-day static system and stochastic user equilibrium assignment models.
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The dynamic user equilibrium assignment has been the focus in the past two decades.
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This, however, requires a full separate user equilibrium assignment to be run for most scenario options.
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Dynamic user equilibrium assignment has been the focus in the past two decades.
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| | In this paper, a discretetime dynamic stochastic assignment model is proposed to meet the theoretical needs of traffic flow guidance systems.The model provides a discretetime description of the variations of flows on a road network during a day or a peak period.The traffic flow on links in the model is assumed as two parts:the free flow and a queue.The firstinfirstout discipline is enforced on all links at all periods of the day.The congestion effect at links and link junctions is taken account.E... | | 提出了一种离散时间的动态随机交通分配模型。该模型以离散时间形式提供在一天或高峰期间内路网交通流的变化。模型中路段交通条件假设为两部分:一部分为自由流,一部分为排队车流。模型中考虑了先入先出的原则和路段拥挤效应。运输需求调整采用马尔克夫动态模型。当每个出行者不能再通过改变出行选择而增加其效应时达到动态随机用户平衡。 | | 文摘来源 | | In this paper, the system character of urban transit network and the principle of passenger how to choose route when congestion exists is analyzed,also uncertain factors are discussed. Further, link cost function is developed and a stochastic user equilibrium assignment model which satisfies the SUE(Stochastic User Equilibrium) principle is formulated, then GA(Genetic Algorithm) is cooperated with the model. Finally, a ... | | 在超级路径的概念之上 ,描述城市公交网络的系统特征 ,分析拥挤条件下乘客选择路线的原则和不确定因素的影响 ,提出了阻抗函数 ,给出一个随机用户平衡配流模型 ,并证明其最优解满足SUE (StochasticUserEquilibrium)随机平衡原则 ,提出用快速搜索算法———遗传算法GA (GeneticAlgorithm)求解模型 ,最后用一个简单的算例进行了验算。 | | 文摘来源 | | Traffic assignment of O D trip matrix estimation from link traffic counts usually employs proportional assignment method and user equilibrium assignment method.In a network with realistic congestion level,these methods have their deficiencies.This paper shows an estimation model with bi level programming foms.Upper level programming is the generalized least squares estimation model;lower level programming is stochastic user equilibrium model.Finally,a heuristic ... | | 在进行OD矩阵估计时所采用的交通流分配方法通常为比例分配法和用户平衡分配法 ,但在实际的拥挤网络中 ,这些分配方法都存在着不足 本文给出了一种更符合实际的双层规划形式的估计模型 ,上层规划为最小二乘估计模型 ,下层规划为随机用户平衡模型 ,并给出了相应的启发式算法 ,最后通过算例验证了算法的有效性 | | 文摘来源 | |   | | << 更多相关文摘 |
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