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基于高斯混合分布的交通拥堵评价模型

, PP. 127-132

Keywords: 交通工程,评价模型,高斯混合分布,交通拥堵,EM算法

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Abstract:

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的混合分布,有效评价交通拥堵。

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