| OD估计的多步双层规划模型新算法研究 |
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| 引用本文： | 袁兴东,程琳,窦凯滨.OD估计的多步双层规划模型新算法研究[J].交通与计算机,2008,26(6). |
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| 作者姓名： | 袁兴东 程琳 窦凯滨 |
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| 作者单位： | 1. 东南大学,南京,210096
2. 中国矿业大学,北京,100083 |
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| 摘 要： | 建立了一个OD估计模型.将OD估计分为固定的步数,每一步都是一个双层规划,上层为广义最小二乘估计,下层为随机用户均衡分配模型,即以广义最小二乘估计和随机用户均衡分配模型为基础,通过更新估计模型中目标矩阵和实测路段上的流量来估计OD矩阵.最后用一个简单的路网验证了该算法的有效性.
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| 关 键 词： | OD估计 多步双层规划 广义最小二乘估计 随机用户均衡 |
A New Algorithm for Multi-step Bi-level Programming Model Based on OD Estimation |
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| YUAN Xingdong,CHENG Lin,DOU Kaibin.A New Algorithm for Multi-step Bi-level Programming Model Based on OD Estimation[J].Computer and Communications,2008,26(6). |
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| Authors: | YUAN Xingdong CHENG Lin DOU Kaibin |
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| Institution: | Southeast University;Nanjing 210096;China;China University of Mining and Technology;Beijing 100083;China |
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| Abstract: | A model of OD estimation was built.OD estimation was divided into fixed steps,with every step containing a bi-level programming.The upper-level problem was a generalized least squares estimator,while the lower level problem was a stochastic user equilibrium model.Namely,based on generalized least squares estimator and stochastic user equilibrium,a new estimator of the OD matrix was proposed by target matrix and traffic counts updating.Finally,a numerical simulation experiment was implemented to verify the e... |
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| Keywords: | OD estimation multi-step bi-level programming generalized least squares estimator stochastic user equilibrium |
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