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浙江大学学报(工学版)
浙江大学学报(工学版)
土木与交通工程     
基于高清智能卡口路段行程时间的数据质量分析
付凤杰,龚越,王殿海,马东方
1. 浙江大学 建筑工程学院,浙江 杭州310058;
2. 浙江大学 海洋学院,浙江 杭州310058
Data quality analysis of link travel time based on HD smart gate
FU Feng jie, GONG Yue, WANG Dian hai, MA Dong fang
1. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China;
2. Ocean College, Zhejiang University, Hangzhou 310058, China
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摘要：

通过分析行程时间估计参数与样本率的变化关系,发现样本率越大,路段行程时间的平均绝对百分误差越小,行程时间标准差的波动性越小;当样本率大于0.414时,样本数据计算得到行程时间参数满足精度及稳定性要求,由此确定行程时间数据的样本率阈值.考虑路段开口计算实际路段行程时间匹配率,并对其时空变化特征和显著性差异进行分析.实际数据表明,行程时间匹配率与路段及日期无关,稳定且均大于最小样本率;行程时间匹配率与时段有关,20:00至次日6:00时段内行程时间匹配率较一天内其他时段低,但仍大于最小样本率.综上可以确定高清智能卡口数据用于估计行程时间的可行性.
Abstract:

The relationship between the estimated parameters of travel time and the sample rate was analyzed. It was found that the bigger the sample rate is, the less the mean absolute percentage error (MAPE) of travel time and volatility of travel time standard deviation is. The travel time parameters obtained by sample data could fulfill required accuracy and stabilization when the sample rate was larger than 0.414. Thus, the sampling rate threshold of travel time was obtained. The actual match rate of travel time on the link was computed considering openings; the spatial-temporal characteristics and significant difference were analyzed. In the numerical analysis, actual data proves that the match rate of travel time is unrelated with link attribute and date, which is stable and larger than the sampling rate threshold. The match rate of travel time is related with time periods, which is lowest during 20:00 to 6:00 in the next day but still larger than the sampling rate threshold. Based on above, the feasibility of travel time estimation using traffic data collected by HD gate system is verified．
出版日期: 2016-09-22
:  U 491  
基金资助:

国家自然科学基金资助项目(51338008,61304191,51278454)；国家科技支撑计划课题资助项目(2014BAG03B05)；浙江省重点科技创新团队资助项目(2013TD09).
通讯作者: 王殿海，男，教授，博导.     E-mail: wangdianhai@sohu.com
作者简介: 付凤杰 (1990-)，女，博士生，从事交通控制研究. ORCID: 0000-0001-5120-8440. E-mail: jiyoumushui@zju.edu.cn
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引用本文:

付凤杰,龚越,王殿海,马东方. 基于高清智能卡口路段行程时间的数据质量分析[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2016.09.17.

FU Feng jie, GONG Yue, WANG Dian hai, MA Dong fang. Data quality analysis of link travel time based on HD smart gate. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2016.09.17.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2016.09.17    或    http://www.zjujournals.com/eng/CN/Y2016/V50/I9/1761

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