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Trajectory clustering: a partition-and-group framework

Lee, Jae-Gil, Han, Jiawei, Whang, Kyu-Young·2007·Proceedings of the 2007 ACM SIGMOD international conference on Management of data

Abstract

Existing trajectory clustering algorithms group similar trajectories as a whole, thus discovering common trajectories. Our key observation is that clustering trajectories as a whole could miss common sub-trajectories. Discovering common sub-trajectories is very useful in many applications, especially if we have regions of special interest for analysis. In this paper, we propose a new partition-and-group framework for clustering trajectories, which partitions a trajectory into a set of line segments, and then, groups similar line segments together into a cluster. The primary advantage of this framework is to discover common sub-trajectories from a trajectory database. Based on this partition-and-group framework, we develop a trajectory clustering algorithm TRACLUS. Our algorithm consists of two phases: partitioning and grouping. For the first phase, we present a formal trajectory partitioning algorithm using the minimum description length(MDL) principle. For the second phase, we present a density-based line-segment clustering algorithm. Experimental results demonstrate that TRACLUS correctly discovers common sub-trajectories from real trajectory data.

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Metadata

Authors
Lee, J.-G., Han, J., & Whang, K.-Y.
Venue
Proceedings of the 2007 ACM SIGMOD international conference on Management of data
Publisher
ACM
Published
2007-06-11
Pages
593-604
ISSN
0730-8078 (ISSN-L)
OpenAlex
W1981398125
Cited by
1,363
References
22
FWCI
41.22
Type
conference paper
Language
en
Open access
closed

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CoChat. (2026). Citation check: Trajectory clustering: a partition-and-group framework. https://app.cochat.ai/papers/10.1145/1247480.1247546
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Lee, J.-G., Han, J., & Whang, K.-Y. (2007). Trajectory clustering: a partition-and-group framework. Proceedings of the 2007 ACM SIGMOD international conference on Management of data. https://doi.org/10.1145/1247480.1247546

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