Detecting Traffic Incidents Using Persistence Diagrams
Detecting Traffic Incidents Using Persistence Diagrams
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DOI:
10.3390/a13090222
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发表时间:
2020-09
期刊:
影响因子:
2.3
通讯作者:
Eric S. Weber;Steven N. Harding;Lee Przybylski
中科院分区:
文献类型:
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作者:
Eric S. Weber;Steven N. Harding;Lee Przybylski
We introduce a novel methodology for anomaly detection in time-series data. The method uses persistence diagrams and bottleneck distances to identify anomalies. Specifically, we generate multiple predictors by randomly bagging the data (reference bags), then for each data point replacing the data point for a randomly chosen point in each bag (modified bags). The predictors then are the set of bottleneck distances for the reference/modified bag pairs. We prove the stability of the predictors as the number of bags increases. We apply our methodology to traffic data and measure the performance for identifying known incidents.