Modeling and Querying Multi-dimensional Moving Objects
Motivated by the problem that the existing spatio-temporal data models do not fully represent moving objects, we design a multi-dimensional data model supporting multiple attributes, static and dynamic attributes. We design operators to manulate attributes by defining both syntax and semantics. The...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Harbin University of Science and Technology Publications
2022-10-01
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| Series: | Journal of Harbin University of Science and Technology |
| Subjects: | |
| Online Access: | https://hlgxb.hrbust.edu.cn/#/digest?ArticleID=2137 |
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| Summary: | Motivated by the problem that the existing spatio-temporal data models do not fully represent moving objects, we design a multi-dimensional data model supporting multiple attributes, static and dynamic attributes. We design operators to manulate attributes by defining both syntax and semantics. The model is combined with spatio-temporal data model to enhance the capability of moving objects databases. We futher develop an index structure as well as the query algorithm to efficiently answer range queries over mult-dimensional moving objects. Each query defines both spatio-temporal and attribute parameters. We present the implentnation of a prototype system for dealing with multi-dimensional moving objects and use real moving objects data sets and synthetic attributes to conduct the experimental evaluation. The results demonstrate that (i) the proposed model well supports querying multi-dimensional moving objects, and (ii) the performance of our solution achieves more than one order of magnitude over alternative methods under the setting of 1 million moving objects with 400 attribute values. |
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| ISSN: | 1007-2683 |