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- 2018
基于路径旅行时间分析的交通异常检测方法
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Abstract:
为了综合考虑连续路段通行能力波动对旅行时间的影响，避免由单一路段通行能力的常规性波动所导致的交通异常误判，提出了一种基于路径旅行时间分析的交通异常检测算法。该算法将深圳市路网网格化为若干个地理子区，以地理子区为单位，使用ST-matching地图匹配算法将深圳市出租车GPS坐标记录点匹配到相应路段，采用基于密度的DBSCAN聚类算法计算路径旅行时间的时变异常阈值，来判定旅行时间的异常。该方法成本低廉，实施难度小，能精确灵敏地检测交通网络异常。
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