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. Author manuscript; available in PMC: 2021 Nov 2.
Published in final edited form as: IEEE Internet Things J. 2018 Jul 10;5(5):3978–3990. doi: 10.1109/jiot.2018.2854278

TABLE X.

Ontologies frequently re-used to add ontology metadata

Ontology Name Prefix URL ontology
Vocabulary of a Friend (VOAF) voaf http://purl.org/vocommons/voaf#
Friend of a Friend (FOAF) foaf http://xmlns.com/foaf/0.1/
A vocabulary for annotating vocabulary descriptions (VANN) vann http://purl.org/vocab/vann/
DCMI Metadata Terms dc http://purl.org/dc/elements/1.1/
DCMI Metadata Terms dcterms http://purl.org/dc/terms/
SemWeb Vocab Status ontology vs http://purl.org/vocommons/voaf#
Ontology Web Language owl http://www.w3.org/2003/06/sw-vocab-status/ns#
Resource Description Framework rdf http://www.w3.org/1999/02/22-rdf-syntax-ns#
RDF Schema rdfs http://www.w3.org/2000/01/rdf-schema#