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ST USM: Bridging the Semantic Gap with a Spatio-Temporal Conceptual Model (2001)
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@MISC{Khatri01stusm:,
author = {Copyright C Vijay Khatri and Author(s Vijay Khatri and Richard T. Snodgrass and Richard T. Snodgrass and Christian S. Jensen (codirector and Michael H. Böhlen and Heidi Gregersen and Dieter Pfoser and Janne Skyt and Giedrius Slivinskas and Kristian Torp and Richard T. Snodgrass (codirector and Dengfeng Gao and Vijay Khatri and Vijay Khatri and Bongki Moon and Sudha Ram and Sudha Ram and Sudha Ram and Sudha Ram and Michael D. Soo and Amazon. Com and Andreas Steiner Timeconsult},
title = {ST USM: Bridging the Semantic Gap with a Spatio-Temporal Conceptual Model},
year = {2001}
}
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Abstract
The representation of geospatial phenomena in databases is one of the key issues in applications like geo-marketing, environmental modeling, transportation planning and geology. For these geospatial applications, there is a need for abstract concepts that would bridge the conceptual gap between the real world and its spatio-temporal representation in the computer systems. To capture the semantics related to space and time in a conceptual schema, we propose an annotation-based approach that allows a database designer to focus first on the non-temporal and non-spatial aspects of the application, and subsequently augment the schema with spatio-temporal annotations. In this paper, we apply our annotation-based approach to the Unifying Semantic Model (USM) to propose the Spatio-Temporal Unifying Semantic Model (ST USM). ST USM is an upward-compatible, snapshot reducible, annotation-based spatio-temporal conceptual model that can comprehensively capture the semantics related to space and time without adding any new spatio-temporal constructs. We provide the formal semantics of ST USM via a mapping to conventional USM and constraints, from which the logical schema can be derived. We illustrate practical aspects related to our spatiotemporal design methodology with a hydrogeologic application at the United States Geological Survey (USGS) and a web-based design tool, thereby demonstrating simplicity and comprehensiveness to spatio-temporal conceptual modeling. 1
Keyphrases
st usm spatio-temporal conceptual model semantic gap annotation-based approach new spatio-temporal construct annotation-based spatio-temporal conceptual model conceptual schema practical aspect logical schema computer system environmental modeling united state geological survey unifying semantic model database designer conceptual gap web-based design tool real world formal semantics key issue hydrogeologic application geospatial application abstract concept conventional usm geospatial phenomenon transportation planning spatio-temporal unifying semantic model spatio-temporal annotation spatio-temporal conceptual modeling spatio-temporal representation non-spatial aspect spatiotemporal design methodology
