摘要
通过环形线圈检测器采集的数据,不仅具有时间序列的特性,而且与其所处的空间位置有很大的关系。文中论述了线圈检测器数据产生的原理,并提出了相应的预处理算法。针对交通数据管理现状和数据挖掘需要,借鉴了空间多维数据模型以建立交通流数据仓库。
The data collected by the loop detector, have the characteristics of time series, and have much to do with the detector＇s location. The paper introduced the principle of data generation of the loop detector and proposed a method of data preparation. In view of the present level of traffic data management and the need of data mining, and based on a multi-dimensional data model, a traffic flow data warehouse was built.
出处
《交通信息与安全》
2009年第1期64-67,共4页
Journal of Transport Information and Safety
关键词
多维数据模型
数据预处理
线圈检测器
交通数据
multi-dimensional data model
data preparation
loop detector
traffic data
