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Distance-based update strategy in LDCQ

  • Letters
  • Published:
Journal of Electronics (China)

Abstract

A new update strategy, distance-based update strategy, is presented in Location Dependent Continuous Query (LDCQ) under error limitation. There are different possibilities to intersect when the distances between moving objects and the querying boundary are different. Therefore, moving objects have different influences to the query result. We set different deviation limits for different moving objects according to distances. A great number of unnecessary updates are reduced and the payload of the system is relieved.

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References

  1. O. Wolfson, S. Chamberlain, et al., Cost and imprecision in modeling the position of moving objects, IEEE 14th International Conference on Data Engineering, Orlando, Florida, USA, 1998, 588–596.

  2. A. P. Sistla, O. Wolfson, et al., Querying the uncertain position of moving objects, Springer-Verlag Lecture Notes in Computer Science, 1399(1998), 310–337.

    Article  Google Scholar 

  3. Y. Dong, E. Chan, et al., Error limitation in LDCQ, Journal of HUST (Nature Science), 31(2003)3, 4–7, (in Chinese).

    Google Scholar 

  4. Y. Dong, E. Chan, et al., Optimization of deviation limit under error limitation in LDCQ, Journal of HUST (Nature Science), 31(2003)3, 8–10, (in Chinese).

    Google Scholar 

  5. O. Wolfson, A. P. Sistla, et al., Updating and querying database that track mobile units, Distributed and Parallel Databases Journal on Mobile Data Management and Applications, 7(1999)3, 257–287.

    Article  Google Scholar 

  6. H. G. Gök, Ö. Ulusoy, Transmission of continuous query results in mobile computing systems, Information Science, 125(2000)1–4, 37–63.

    Article  MATH  Google Scholar 

  7. A. P. Sistla, O. Wolfson, et al., Modeling and querying moving objects, Proceedings of the Thirteenth International Conference on Data Engineering (ICDE13), Birmingham, UK, Apr, 1997, Session 16.

  8. K. Y. Lam, Ö. Ulusoy, et al., An efficient method for generating location updates for processing of location-dependent continuous queries, International Conference on Database Systems for Advanced Applications (DASFAA’01), Hong Kong, April 2001, 218–225.

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Dong, Y., Edward, C. & Huang, Z. Distance-based update strategy in LDCQ. J. of Electron.(China) 21, 337–341 (2004). https://doi.org/10.1007/BF02687891

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  • DOI: https://doi.org/10.1007/BF02687891

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