Voronoi-based range query for trajectory data in spatial networks

  • Authors:
  • Shen Liu;Ling Chen;Gencai Chen

  • Affiliations:
  • Zhejiang University;Zhejiang University;Zhejiang University

  • Venue:
  • Proceedings of the 2011 ACM Symposium on Applied Computing
  • Year:
  • 2011

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Abstract

Query processing for trajectory data is very important to spatio-temporal databases. Most of the research work in this field is based on the Euclidean space. However, in many applications, the spatio-temporal trajectories of moving objects are distributed in spatial network environment intensively, and the movements of moving objects are constrained by given network segments. Under such circumstances, existing Euclidean-based methods are ineffective. In this paper, we present a Network Voronoi Diagram (NVD) based method, to solve range query problem on a huge amount of spatio-temporal trajectories in spatial networks. The experiments demonstrated that our method is very efficient even when the trajectory datasets are huge.