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Content Provider | IEEE Xplore Digital Library |
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Author | Xiong, X. Mokbel, M.F. Aref, W.G. |
Copyright Year | 2005 |
Description | Author affiliation: Dept. of Comput. Sci., Purdue Univ., West Lafayette, IN, USA (Xiong, X.; Mokbel, M.F.; Aref, W.G.) |
Abstract | Location-aware environments are characterized by a large number of objects and a large number of continuous queries. Both the objects and continuous queries may change their locations over time. In this paper, we focus on continuous k-nearest neighbor queries (CKNN, for short). We present a new algorithm, termed SEA-CNN, for answering continuously a collection of concurrent CKNN queries. SEA-CNN has two important features: incremental evaluation and shared execution. SEA-CNN achieves both efficiency and scalability in the presence of a set of concurrent queries. Furthermore, SEA-CNN does not make any assumptions about the movement of objects, e.g., the objects velocities and shapes of trajectories, or about the mutability of the objects and/or the queries, i.e., moving or stationary queries issued on moving or stationary objects. We provide theoretical analysis of SEA-CNN with respect to the execution costs, memory requirements and effects of tunable parameters. Comprehensive experimentation shows that SEA-CNN is highly scalable and is more efficient in terms of both I/O and CPU costs in comparison to other R-tree-based CKNN techniques. |
Sponsorship | IEEE Comput. Soc. Database Soc. of Japan (DBSJ) Inf. Process. Soc. of Japan (IPSJ) Inst. of Electron., Inf. and Commun. Eng. (IEICE) |
Starting Page | 643 |
Ending Page | 654 |
File Size | 346252 |
Page Count | 12 |
File Format | |
ISBN | 0769522858 |
ISSN | 10844627 |
DOI | 10.1109/ICDE.2005.128 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2005-04-05 |
Publisher Place | Japan |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Databases Scalability Costs Query processing Delay Shape Spatiotemporal phenomena Monitoring Degradation Performance evaluation |
Content Type | Text |
Resource Type | Article |
Subject | Signal Processing Information Systems Software |
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