Browse > Article

Client-Side Caching for Nearest Neighbor Queries  

Park Kwangjin (Dept. of Computer Science and Engineering, Korea University)
Hwang Chong-Sun (Dept. of Computer Science and Engineering, Korea University)
Publication Information
Journal of Communications and Networks / v.7, no.4, 2005 , pp. 417-428 More about this Journal
Abstract
The Voronoi diagram (VD) is the most suitable mechanism to find the nearest neighbor (NN) for mobile clients. In NN query processing, it is important to reduce the query response time, since a late query response may contain out-of-date information. In this paper, we study the issue of location dependent information services (LDISs) using a VD. To begin our study, we first introduce a broadcast-based spatial query processing methods designed to support NN query processing. In further sections, we introduce a generic method for location-dependent sequential prefetching and caching. The performance of this scheme is studied in different simulated environments. The core contribution of this research resides in our analytical proof and experimental results.
Keywords
Data caching; energy conservation; geographical information systems;
Citations & Related Records

Times Cited By Web Of Science : 2  (Related Records In Web of Science)
Times Cited By SCOPUS : 1
연도 인용수 순위
1 T. Imielinski, S. Viswanathan, and B. R. Badrinath, 'Data on air: Organization and access,' IEEE Trans. Knowledge Data Eng., 1997
2 B. Zheng, W.-C. Lee, and D. L. Lee, 'On semantic caching and query scheduling for mobile nearest-neighbor search,' Wireless Network, 2004
3 Y. D. Chung and M. H. Kim, 'An index replication scheme for wireless data broadcasting,' J. Syst. Software, 2000
4 V. Grassi, 'Prefetching policies for energy saving and latency reduction in a wireless broadcast data delivery system,' in Proc. MSWiM 2004, 2004
5 D. Barbara and T. Imielinski, 'Sleepers and workaholics: Cashing strategies in mobile environments,' in Proc. SIGMOD '94, 1994
6 Spatial Datasets, available at http://dias.cti.gr/ytheod/researchldatasets/spatial.html
7 B. Zheng, W.-C. Lee, and D. L. Lee, 'Search continuous nearest neighbor on air,' in Proc. Int. Conf. Mobile and Ubiquitous Systems: Networking and Services, Boston, Massachusetts, Aug. 2004
8 N. Roussopoulos, S. Kelley, and F. Vincent. 'Nearest neighbor queries,' in Proc. SIGMOD'95, 1995
9 J. Xu, B. Zheng, W.-C. Lee, and D. L. Lee, 'Energy efficient index for querying location-dependent data in mobile broadcast environments,' in Proc. ICDE 2003, 2003
10 B. Zheng and D. L. Lee, 'Semantic caching in location-dependent query processing, ' in Proc. Int. Symposium on Spatial and Temporal Databases, 2001
11 D. L. Lee, J. Xu, and B. Zheng, 'Data management in location-dependent information services,' IEEE Pervasive Computing, vol. 1, no. 3, 2002
12 X. Yang and A. Bouguettaya, 'Broadcast-based data access in wireless environments,' in Proc. EBDT 2002, 2002
13 T. Imielinski, S. Viswanathan, and B. R. Badrinath, 'Energy efficient indexing on air,' in Proc. SIGMOD'94, 1994
14 K. Park, M. Song, and C.-S. Hwang, 'Broadcasting and prefetching schemes for location dependent information services,' in Proc. W2GIS 2004, 2004
15 T. Camp, J. Boleng, and V. Davies, 'A survey of mobility models for ad hoc network research,' in Proc. IEEE WCMC 2002, 2002
16 A. Guttman, 'R-trees: A dynamic index structure for spatial searching,' in Proc. SIGMOD'84, 1984
17 J. Zhang, M. Zhu, D. Papadias, Y. Tao, and D. L. Lee, 'Location-based spatial queries, ' in Proc. SIGMOD 2003, 2003
18 J. Xu, X. Tang, D. L. Lee, and Q. Hu. 'Cache coherency in location-dependent information services for mobile environment,' in Proc. Int. Conf. Mobile Data Access '99, 1999
19 B. Zheng, W.-C. Lee, and D. L. Lee, 'Spatial queries in wireless broadcast systems,' Wireless Network, 2004
20 J. Xu, B. Zheng, W.-C. Lee, and D. L. Lee, 'D-tree: An index structure for planar point queries in location-based wireless services,' IEEE Trans. Knowledge Data Eng., 2004
21 B. Zheng, J. Xu, and D. L. Lee, 'Cache invalidation and replacement strategies for location-dependent data in mobile environments,' IEEE Trans. Comput., vol. 51, no. 10, 2002