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2009
ACM

Efficient anomaly monitoring over moving object trajectory streams

9 years 3 months ago
Efficient anomaly monitoring over moving object trajectory streams
Lately there exist increasing demands for online abnormality monitoring over trajectory streams, which are obtained from moving object tracking devices. This problem is challenging due to the requirement of high speed data processing within limited space cost. In this paper, we present a novel framework for monitoring anomalies over continuous trajectory streams. First, we illustrate the importance of distance-based anomaly monitoring over moving object trajectories. Then, we utilize the local continuity characteristics of trajectories to build local clusters upon trajectory streams and monitor anomalies via efficient pruning strategies. To further reduce the time cost, we propose a piecewise metric index structure to reschedule the joining order of local clusters. Finally, our extensive experiments demonstrate the effectiveness and efficiency of our methods. Categories and Subject Descriptors H.2.4 [Database Management]: Systems--Multimedia Databases; H.2.8 [Database Management]: Dat...
Yingyi Bu, Lei Chen 0002, Ada Wai-Chee Fu, Dawei L
Added 25 Nov 2009
Updated 25 Nov 2009
Type Conference
Year 2009
Where KDD
Authors Yingyi Bu, Lei Chen 0002, Ada Wai-Chee Fu, Dawei Liu
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