Fuzzy Spatiotemporal Data Modeling and Operations in RDF

With the emergence of a large number of fuzzy spatiotemporal data on the Web, how to represent and operate fuzzy spatiotemporal data has become an important research issue. Meanwhile, the Resource Description Framework (RDF) is a standard data and knowledge description language of the Semantic Web a...

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Bibliographic Details
Published in:Information (Basel) 2022-10, Vol.13 (10), p.503
Main Authors: Zhu, Lin, Meng, Xiangfu, Mi, Zehui
Format: Article
Language:English
Subjects:
Algebra
algebraic operation
Data models
fuzzy spatiotemporal data
Geographic information systems
Queries
Query languages
RDF
Resource Description Framework-RDF
Semantic web
Semantics
Spatiotemporal data
Specification and description languages
Standard data
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Summary:With the emergence of a large number of fuzzy spatiotemporal data on the Web, how to represent and operate fuzzy spatiotemporal data has become an important research issue. Meanwhile, the Resource Description Framework (RDF) is a standard data and knowledge description language of the Semantic Web and has been applied in many application areas, such as geographic information systems and meteorological systems. In this paper, a model for representing fuzzy spatiotemporal data is proposed and a set of algebraic operations for the model are investigated. First, a representation method of fuzzy spatiotemporal RDF data and a fuzzy spatiotemporal RDF graph model are proposed. In addition, a formal fuzzy spatiotemporal RDF algebra is proposed and a set of algebraic operations for manipulating fuzzy spatiotemporal RDF data are developed. The algebraic operations include: set operation, selection operation, projection operation, join operation, and construction operation. Finally, the existing SPARQL query language is extended and an example that shows how to apply the proposed algebraic operations to capture the queries expressed by the extended SPARQL query language is given.
ISSN:2078-2489
2078-2489
DOI:10.3390/info13100503