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Design and Implementation of the dynamic hashing structure for indexing the current positions of moving objects  

전봉기 (신라대학교 컴퓨터정보공학부)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.8, no.6, 2004 , pp. 1266-1272 More about this Journal
Abstract
Location-Based Services(LBS) give rise to location-dependent queries of which results depend on the positions of moving objects. Because positions of moving objects change continuously, indexes of moving object must perform update operations frequently for keeping the changed position information. Existing spatial index (Grid File, R-Tree, KDB-tree etc.) proposed as index structure to search static data effectively. There are not suitable for index technique of moving object database that position data is changed continuously. In this paper, I propose a dynamic hashing index that insertion/delete costs are low. The dynamic hashing structure is that apply dynamic hashing techniques to combine a hash and a tree to a spatial index. The results of my extensive experiments show the dynamic hashing index outperforms the $R^$ $R^*$-tree and the fixed grid.
Keywords
Moving objects databases; Spatio-temporal indexing; Hash; GIS;
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