Application and Case Study of Real-time ITS Data Sampling Strategy

Abstract

Abstract: This paper presents the significance and role of data sampling in ITS data management. The data sampling approach is realized through VB an ORACLE software, which is then applied to the case study using the ITS data from the third loop highway of Beijing and San Antonio, Texas. It is found that the resulting optimal samples are insensitive to the weights, but match the average of the total well and also contain the maximum information of the raw data.

Key words: ITS, data management, data sampling, data arching, traffic flow

摘要： 阐述了数据抽样技术在ITS数据管理中的意义和作用，通过VB编程语言和ORACLE数据库技术实现了ITS数据抽样算法，并对北京三环路上和美国德克萨斯州圣安东尼奥的实时ITS数据进行了测试，测试结果表明，最佳抽样日对权重的变化不敏感，最佳抽样日数据与总体平均值匹配得较好，也包含了最多的原始数据的信息。

关键词: ITS, 数据管理, 数据抽样, 数据存储, 交通流

WU Jia-qing, YU Lei, YUAN Zhen-zhou, GENG Yan-bin, LIU Meng-han. Application and Case Study of Real-time ITS Data Sampling Strategy[J]. Journal of Transportation Systems Engineering and Information Technology, 2004, 4(2): 31-41 .

吴家庆,于雷,袁振州,耿彦斌,刘梦涵. 实时ITS数据抽样技术的应用与案例分析[J]. 交通运输系统工程与信息, 2004, 4(2): 31-41 .

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URL: http://www.tseit.org.cn/EN/abstract/abstract17119.shtml

http://www.tseit.org.cn/EN/Y2004/V4/I2/31

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Application and Case Study of Real-time ITS Data Sampling Strategy

实时ITS数据抽样技术的应用与案例分析

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