Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/173

Location-based Spatial Queries

Authors Zhang, J.
Zhu, M.
Papadias, D.
Tao, Y.
Lee, D.L.
Issue Date 2003
Source Proceedings of the ACM SIGMOD International Conference on Management of Data , 2003, p. 443-454
Summary In this paper we propose an approach that enables mobile clients to determine the validity of previous queries based on their current locations. In order to make this possible, the server returns in addition to the query result, a validity region around the client's location within which the result remains the same. We focus on two of the most common spatial query types, namely nearest neighbor and window queries, define the validity region in each case and propose the corresponding query processing algorithms. In addition, we provide analytical models for estimating the expected size of the validity region. Our techniques can significantly reduce the number of queries issued to the server, while introducing minimal computational and network overhead compared to traditional spatial queries.
Subjects
ISSN 0730-8078
Rights © ACM, 2003. This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution. The definitive version was published in Proceedings / ACM-SIGMOD International Conference on Management of Data, San Diego, CA, USA, 9-12 June 2003
Language English
Format Conference paper
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