“Core” vocabularies

• There are also a number “core vocabularies” (not necessarily OWL based)

• • Dublin Core: about information resources, digital libraries, with extensions for rights, permissions, digital right management
  • FOAF: about people and their organizations
  • DOAP: on the descriptions of software projects
  • SIOC: Semantically-Interlinked Online Communities
  • vCard in RDF
  • …

• One should never forget: ontologies/vocabularies must be shared and reused!