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Range Pattern Match Query Based on Spatial-temporal Label Trajectories

  

  1. (College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)
  • Received:2018-01-18 Online:2018-09-11 Published:2018-09-11

Abstract: According to semantic descriptions of spatial-temporal label trajectories, combined with traditional moving object queries, the range pattern match query is introduced with formal representations. The range pattern match query returns all the trajectories that match a given query pattern within a given spatial-temporal range, the range pattern match query algorithm based on LR-Tree is designed, and this paper analyzes the filter and the refine progress of the query algorithm. Through extensive experiments with different parameters of the query algorithm, this paper compares with the query algorithms based on RR-Tree, 3DR-Tree, TB-Tree and SETI, and verifies the efficiency of the proposed algorithm.

Key words: spatial-temporal label trajectories, range query, pattern match query, index

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