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A Method of Cleaning and Repairing the Urban Floating Car Data
| 题名： | A Method of Cleaning and Repairing the Urban Floating Car Data |
| 正文语种： | 中文 |
| 作者： | Zhang Zhaosheng Li Jiangtao |
| 作者单位： | epartment of utomotive Engineering,Tsinghua University,Beijing,100084 |
| 关键词： | floating car data data cleaning data repair |
| 摘要： | Floating car data are being increasingly applied in urban dynamic traffic data collection.However,the mobility and scale limit of floating cars may lead to incomplete or inaccurate data and thus influence the measurement of the state of traffic.To address the above problems,we use threshold control and a rule based on approximate normalization transform to clean abnormal traffic data,and fill the missing data by a weighted average method and an exponential smoothing method.The findings of data repair for road in Beijing demonstrate that the mean repair error may meet the requirements of traffic state measurement,indicating that this methodology effectively cleans floating car data. |
| 会议日期： | 20120822 |
| 会议举办地点： | 安徽芜湖 |
| 会议名称： | 2012中国汽车工程学会第十五届汽车安全技术学术会议 |
| 出版日期： | 2012-08-22 |
| 母体文献： | 2012中国汽车工程学会第十五届汽车安全技术学术会议论文集 |
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