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Trajectory Databases: Data Models, Uncertainty and Complete Query Languages

  • Bart Kuijpers
  • Walied Othman
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4353)

Abstract

Moving objects produce trajectories. We describe a data model for trajectories and trajectory samples and an efficient way of modeling uncertainty via beads for trajectory samples. We study transformations for which important physical properties of trajectories, such as speed, are invariant. We also determine which transformations preserve beads. We give conceptually easy first-order complete query languages and computationally complete query languages for trajectory databases, which allow to talk directly about speed and beads. The queries expressible in these languages are invariant under speed- and bead-preserving transformations.

Keywords

Query Language Point Variable Atomic Formula Straight Line Segment Trajectory Data 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Bart Kuijpers
    • 1
  • Walied Othman
    • 1
  1. 1.Theoretical Computer Science GroupHasselt University & Transnational University of LimburgBelgium

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