Volume 41 Issue 8
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XIANG Longgang, TAO Qiangqiang, WU Tao. A Semantics Associated Model for Trajectory-directed Line Movement and Its SQL Analysis[J]. Geomatics and Information Science of Wuhan University, 2016, 41(8): 1034-1039, 1045. DOI: 10.13203/j.whugis20140407
Citation: XIANG Longgang, TAO Qiangqiang, WU Tao. A Semantics Associated Model for Trajectory-directed Line Movement and Its SQL Analysis[J]. Geomatics and Information Science of Wuhan University, 2016, 41(8): 1034-1039, 1045. DOI: 10.13203/j.whugis20140407
shu

A Semantics Associated Model for Trajectory-directed Line Movement and Its SQL Analysis

  • 1.

    State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China

  • 2.

    School of Geosciences and Info-Physics, Central South University, Changsha 410083, China

Funds: 

The National Natural Science Foundation of China 41471374

The National Natural Science Foundation of China 41001296

More Information
  • Author Bio:

    XIANG Longgang, PhD, associate professor, specializes in the fields of trajectory data analysis and virtual globes technologies. E-mail: geoxlg@whu.edu.cn

  • Received Date: September 11, 2014
  • Published Date: August 04, 2016
    Graphical Abstract
    • Abstract
  • Trajectories move relative to directed lines, incurring topological events of various kinds, such as entries, departures, crosses, meets, retracements, stops and so on. Based on the spatial-temporal characteristics of trajectory-directed line movements a semantic associated model of trajectory-directed line movement is proposed, Our strategy depicts complex detailed topological relations between trajectories and directed lines by combining sets of local topological relations. In this way, movements of trajectories with respect to directed lines can be specified from the perspective of both topology and semantics. A relational schema based on this model was designed and evaluated in for two cases of typical queries types and analyzing trajectory-directed line movement by exploring pure SQL statements.
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    • References (14)
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