| 基于高斯混合分布的交通拥堵评价模型 |
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| 引用本文： | 王曦,祝付玲. 基于高斯混合分布的交通拥堵评价模型[J]. 公路交通科技, 2011, 28(2): 127-132 |
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| 作者姓名： | 王曦 祝付玲 |
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| 作者单位： | 王曦,WANG Xi(无锡市公共工程建设中心,江苏,无锡,214031);祝付玲,ZHU Fuling(无锡市建设局,江苏,无锡,214031) |
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| 摘 要： | 为了客观、有效的评价交通拥堵的程度,采用速度指标作为反映交通流状态特征的关键变量,针对交通流速度变量存在混合分布的特点,建立了基于高斯混合分布的交通拥堵评价模型,并将EM算法运用于模型求解,通过对速度变量的聚类分析,以判别交通状态,评价交通拥堵程度.上海市快速高架路实测数据应用模型分析的结果表明:模型可以客观分析交通流...
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| 关 键 词： | 交通工程 评价模型 高斯混合分布 交通拥堵 EM算法 |
Evaluation Model of Traffic Congestion Based on Gaussian Mixture Distribution |
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| WANG Xi,ZHU Fuling. Evaluation Model of Traffic Congestion Based on Gaussian Mixture Distribution[J]. Journal of Highway and Transportation Research and Development, 2011, 28(2): 127-132 |
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| Authors: | WANG Xi ZHU Fuling |
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| Affiliation: | WANG Xi1,ZHU Fuling2(1.Wuxi Urban Public Projects Construction Center,Wuxi Jiangsu 214031,China,2.Wuxi Construction Bureau,China) |
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| Abstract: | In order to evaluate traffic congestion more objectively and effectively,velocity was employed as the key independent variable for the feature of traffic flow state,the evaluation model of traffic congestion based on Gaussian mixture distribution was developed for the reason that velocity of traffic flow shows the mixture distribution performance.The EM algorithm was used to this model for the analysis of clustering velocity variable.Depend on the result of model solution,the factual traffic flow state was ... |
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| Keywords: | traffic engineering evaluation model Gaussian mixture distribution traffic congestion EM algorithm |
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