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The Web Ontology Language (OWL) is a family of knowledge representation languages for authoring ontologies.Ontologies are a formal way to describe taxonomies and classification networks, essentially defining the structure of knowledge for various domains: the nouns representing classes of objects and the verbs representing relations between the objects.
The Semantic Web is a collaborative movement led by international standards body the World Wide Web Consortium (W3C). [1] The standard promotes common data formats on the World Wide Web . By encouraging the inclusion of semantic content in web pages , the Semantic Web aims at converting the current web, dominated by unstructured and semi ...
The World Wide Web Consortium (W3C) Incubator Group for Uncertainty Reasoning for the World Wide Web [27] (URW3-XG) final report lumps these problems together under the single heading of "uncertainty". [28] Many of the techniques mentioned here will require extensions to the Web Ontology Language (OWL) for example to annotate conditional ...
RDF/XML is sometimes misleadingly called simply RDF because it was introduced among the other W3C specifications defining RDF and it was historically the first W3C standard RDF serialization format. RDF/XML is the primary exchange syntax for OWL 2, and must be supported by all OWL 2 tools. [2]
The first version [1] [4] was published by the World-Wide Web Consortium (W3C) in April 1998, and the final W3C recommendation was released in February 2014. [3] Many RDFS components are included in the more expressive Web Ontology Language (OWL).
The W3C provides an experimental on-line validation service. [30] Vocbench [31] is an open-source, web-based RDF/OWL/SKOS/SKOS-XL editor developed by a collaboration between the Food and Agriculture Organization (FAO) of the United Nations, the University of Rome Tor Vergata and the Malaysian research centre MIMOS.
The specification was submitted in May 2004 to the W3C by the National Research Council of Canada, Network Inference (since acquired by webMethods), and Stanford University in association with the Joint US/EU ad hoc Agent Markup Language Committee. The specification was based on an earlier proposal for an OWL rules language. [2] [3]
SHACL [1] (W3C Technical Recommendation) is the main document, defining the features of SHACL Core and its extension mechanism called SHACL-SPARQL. SHACL Core defines the basic syntax and structure of shapes, constraints, the built-in kinds of constraints, and how to link shapes to data nodes.