Detecting commuting patterns by clustering subtrajectories

K. Buchin, M. Buchin, J. Gudmundsson, M. Löffler, J. Luo

Research output: Contribution to journalArticleAcademicpeer-review

90 Citations (Scopus)
1 Downloads (Pure)


In this paper we consider the problem of detecting commuting patterns in a trajectory. For this we search for similar subtrajectories. To measure spatial similarity we choose the Fréchet distance and the discrete Fréchet distance between subtrajectories, which are invariant under differences in speed. We give several approximation algorithms, and also show that the problem of finding the 'longest' subtrajectory cluster is as hard as MaxClique to compute and approximate.
Original languageEnglish
Pages (from-to)253-282
JournalInternational Journal of Computational Geometry and Applications
Issue number3
Publication statusPublished - 2011


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