Continuous min-max distance bounded query in road networks

  • Authors:
  • Yuan-Ko Huang;Lien-Fa Lin;Yu-Chi Chung;I-Fang Su

  • Affiliations:
  • Department of Information Communication, Kao-Yuan University, Kaohsiung Country, Taiwan, R.O.C.;Department of Information Communication, Kao-Yuan University, Kaohsiung Country, Taiwan, R.O.C.;Department of Computer Science and Information Engineering, Chang Jung Christian University, Taiwan, R.O.C.;Department of Information Management, Fortune Institute of Technology, Taiwan, R.O.C.

  • Venue:
  • APWeb'12 Proceedings of the 14th Asia-Pacific international conference on Web Technologies and Applications
  • Year:
  • 2012

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Abstract

In recent years, the research community has introduced various methods for processing spatio-temporal queries in road networks. In this paper, we present a novel type of spatio-temporal queries, named the continuous min-max distance bounded query (or CM2DBQ for short). Given a moving query object q, a minimal distance dm, and a maximal distance dM, a CM2DBQ retrieves the bounded objects whose road distances to q are within the range [dm, dM] at each time instant. The CM2DBQ is indeed an important query with many real applications. We address the problem of processing the CM2DBQ and propose two algorithms, named the Continuous Within Query-based (CWQ-based) algorithm and the CM2DBQ algorithm, to efficiently determine the bounded objects at each time instant. Extensive experiments using real road network dataset demonstrate the efficiency of the proposed algorithms.