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On Indexing Mobile Objects (1999)
| Citations: | 217 - 16 self |
BibTeX
@INPROCEEDINGS{Kollios99onindexing,
author = {George Kollios and Dimitrios Gunopulos and Vassilis J. Tsotras},
title = {On Indexing Mobile Objects},
booktitle = {},
year = {1999},
pages = {261--272}
}
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Abstract
We show how to index mobile objects in one and two dimensions using efficient dynamic external memory data structures. The problem is motivated by real life applications in traffic monitoring, intelligent navigation and mobile communications domains. For the 1-dimensional case, we give (i) a dynamic, external memory algorithm with guaranteed worst case performance and linear space and (ii) a practical approximation algorithm also in the dynamic, external memory setting, which has linear space and expected logarithmic query time. We also give an algorithm with guaranteed logarithmic query time for a restricted version of the problem. We present extensions of our techniques to two dimensions. In addition we give a lower bound on the number of I/O's needed to answer the d-dimensional problem. Initial experimental results and comparisons to traditional indexing approaches are also included. 1 Introduction Traditional database management systems assume that data stored in the database rem...
Keyphrases
indexing mobile object linear space mobile communication domain present extension case performance initial experimental result index mobile object traditional indexing approach practical approximation algorithm 1-dimensional case traffic monitoring logarithmic query time intelligent navigation d-dimensional problem external memory algorithm external memory setting guaranteed logarithmic query time database rem introduction traditional database management system real life application restricted version
