2001 | OriginalPaper | Chapter
Constrained Nearest Neighbor Queries
Authors : Hakan Ferhatosmanoglu, Ioanna Stanoi, Divyakant Agrawal, Amr El Abbadi
Published in: Advances in Spatial and Temporal Databases
Publisher: Springer Berlin Heidelberg
Included in: Professional Book Archive
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In this paper we introduce the notion of constrained nearest neighbor queries (CNN) and propose a series of methods to answer them. This class of queries can be thought of as nearest neighbor queries with range constraints. Although both nearest neighbor and range queries have been analyzed extensively in previous literature, the implications of constrained nearest neighbor queries have not been discussed. Due to their versatility, CNN queries are suitable to a wide range of applications from GIS systems to reverse nearest neighbor queries and multimedia applications. We develop methods for answering CNN queries with different properties and advantages. We prove the optimality (with respect to I/O cost) of one of the techniques proposed in this paper. The superiority of the proposed technique is shown by a performance analysis.