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Trajectory clustering: a partition-and-group framework

Published: 11 June 2007 Publication History

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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    cover image ACM Conferences
    SIGMOD '07: Proceedings of the 2007 ACM SIGMOD international conference on Management of data
    June 2007
    1210 pages
    ISBN:9781595936868
    DOI:10.1145/1247480
    • General Chairs:
    • Lizhu Zhou,
    • Tok Wang Ling,
    • Program Chair:
    • Beng Chin Ooi
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Published: 11 June 2007

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    Author Tags

    1. MDL principle
    2. density-based clustering
    3. partition-and-group framework
    4. trajectory clustering

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    • (2024)A New Trajectory Clustering Method for Mining Multiple Periodic Patterns from Complex Oceanic TrajectoriesRemote Sensing10.3390/rs1611194416:11(1944)Online publication date: 28-May-2024
    • (2024)Ship Trajectory Classification Prediction at Waterway Confluences: An Improved KNN ApproachJournal of Marine Science and Engineering10.3390/jmse1207107012:7(1070)Online publication date: 26-Jun-2024
    • (2024)Trajectory Mining and Routing: A Cross-Sectoral ApproachJournal of Marine Science and Engineering10.3390/jmse1201015712:1(157)Online publication date: 12-Jan-2024
    • (2024)Method for the Identification and Classification of Zones with Vehicular CongestionISPRS International Journal of Geo-Information10.3390/ijgi1303007313:3(73)Online publication date: 28-Feb-2024
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