Fuzzy Spatiotemporal Data Modeling and Operations in RDF

With the emergence of a large number fuzzy spatiotemporal data on Web, how to represent and operate has become an important research issue. Meanwhile, Resource Description Framework (RDF) is standard knowledge description language Semantic Web been applied in many application areas, such as geographic information systems meteorological systems. In this paper, model for representing proposed set algebraic operations are investigated. First, representation method RDF graph proposed. addition, formal algebra manipulating developed. The include: operation, selection projection join construction operation. Finally, existing SPARQL query extended example that shows apply capture queries expressed by given.