基于特征分析的城市道路短时交通流量预处理

Short-term Traffic Flow Pretreatment of Urban Highway Based on Characteristic Analysis

对城市道路交通流量数据进行了特征分析,规划了数据预处理过程中的3大内容:故障数据的识别与修补、数据消噪处理和数据平滑处理。最后基于实际采集数据,对信息预处理的各个步骤进行了数据分析和算法试验。实证结果表明,该预处理过程正确、合理,可以很好地保证输入数据质量。

The characteristics of short-term traffic flow data of urban highway were analyzed. Based on it, three aspects of traffic flow pretreatment were programmed including identifying and modifying abnormal data, and de-noising and smoothing analysis of normal data based on the analysis. Then, the traffic flow pretreatment method was tested with the collected traffic volume data. The conclusion shows that the new pretreatment process is applicable to the real condition and has a good result.