计算机科学 ›› 2019, Vol. 46 ›› Issue (1): 271-277.doi: 10.11896／j.issn.1002-137X.2019.01.042
王英博1, 单晓晨2, 孟煜3
WANG Ying-bo1, SHAN Xiao-chen2, MENG Yu3
摘要： 区域间可达性的评估对城市地面交通出行效率的提高有着重要作用。传统区域间可达性评估方法使用区域间直线距离计算区域间的平均旅行时间,其平均值与实际值的偏差较高,而且基于出租车乘降热点统计的区域间可达性量化方法对于旅行目的地分布不均的区域量化结果过低。针对以上两点不足导致的区域间可达性评估不准确的问题,文中构建了基于GPS的区域间可达性评估模型,从出租车GPS数据中提炼出完整的旅行来计算实际的旅行时间,以提高平均旅行时间的准确性。在此基础上还提出了一种基于四维OD矩阵的可达率计算模型,并以此可达率作为可达性量化标准,从而解决部分区域因发生旅行的目的地分布不均而导致的区域可达性评估不准确的问题。实验表明,提出的可达性评估模型较传统方法而言评估的准确性提高了9.4％～28.7%,特别是在旅行目的地分布不均的结果区域中,可达性评估准确性的提高更为显著。
中图分类号:
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