Maintaining knowledge about temporal intervals
Communications of the ACM
A spatiotemporal database model and query language
Journal of Systems and Software
A spatial model for complex objects with a broad boundary supporting queries on uncertain data
Data & Knowledge Engineering
The TSQL2 Temporal Query Language
The TSQL2 Temporal Query Language
Spatial SQL: A Query and Presentation Language
IEEE Transactions on Knowledge and Data Engineering
SSD '97 Proceedings of the 5th International Symposium on Advances in Spatial Databases
Managing Time in GIS: An Event-Oriented Approach
Proceedings of the International Workshop on Temporal Databases: Recent Advances in Temporal Databases
A Design of Topological Predicates for Complex Crisp and Fuzzy Regions
ER '01 Proceedings of the 20th International Conference on Conceptual Modeling: Conceptual Modeling
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A spatiotemporal database system manages data of geospatial objects whose geometry change over time and vagueness is their inherent nature. In this paper, we concentrate on the applications dealing with objects whose extents are indeterminate and change constantly. To support geographic information systems (GIS) in representing and handing such objects efficiently, we propose a fuzzy spatiotemporal data model called FSTDM based on fuzzy set theory. Also, we introduce algorithms for proceeding queries depending on whether the predicate is fuzzy spatial, temporal, or fuzzy spatiotemporal (FST). This work is applicable to many applications handling time-varying geospatial data, including global change (as in climate or land cover change), social (demographic, health, etc.) applications.