An Efficient Indexing Scheme for Moving Objects’ Trajectories on Road Networks
Identifieur interne : 002162 ( Main/Merge ); précédent : 002161; suivant : 002163An Efficient Indexing Scheme for Moving Objects’ Trajectories on Road Networks
Auteurs : Jae-Woo Chang [Corée du Sud] ; Jung-Ho Um [Corée du Sud]Source :
- Lecture Notes in Computer Science [ 0302-9743 ] ; 2006.
Abstract
Abstract: Even though moving objects usually move on spatial networks, there has been little research on trajectory indexing schemes for spatial networks, like road networks. In this paper, we propose an efficient indexing scheme for moving objects’ trajectories on road networks. For this, we design a signature-based indexing scheme for efficiently dealing with the trajectories of current moving objects as well as for maintaining those of past moving objects. In addition, we provide both an insertion algorithm to store the initial information of moving objects’ trajectories and one to store their segment information. We also provide a retrieval algorithm to find a set of moving objects whose trajectories match the segments of a query trajectory. Finally, we show that our indexing scheme achieves much better performance on trajectory retrieval than the leading trajectory indexing schemes, such as TB-tree and FNR-tree.
Url:
DOI: 10.1007/11775300_2
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