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CORES Metadata Interoperability Workshop

CORES Metadata Interoperability Workshop. Dave Beckett SWAD-Europe. Dave Beckett - Background. Metadata - DCMI Semantic Web - RDF Core Web Developer W3C Advisory Committee Rep. W3C and Elements / Terms. W3C is not a registry (defer to IETF) Terms are in specifications

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CORES Metadata Interoperability Workshop

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  1. CORES Metadata Interoperability Workshop Dave Beckett SWAD-Europe

  2. Dave Beckett - Background • Metadata - DCMI • Semantic Web - RDF Core • Web Developer • W3C Advisory Committee Rep.

  3. W3C and Elements / Terms • W3C is not a registry (defer to IETF) • Terms are in specifications • Semantic web languages - URIs • URIs not necessarily for retrieval • Working with IETF on URI updates

  4. Our standard has "elements" • Few W3C RECs are languages • Some have “elements” called: • RDF: Properties, Classes • XML: Infoitems, Facets, Particles (XSD) • For those: Yes

  5. Identified in a citable way • “In principle, we would be willing to identify our elements in a more generalized form shared by other standards as well.” • Yes - part of the W3C mission

  6. Identify elements with URIs • Yes (RDF, OWL do this) • But XSD uses XML Qnames • Working on the latter • Something may be behind the URI(after resolution, retrieval)

  7. URI stability, persistence, … • Yes. • Guaranteed by W3C host institutions - Persistence Policy • /TR/ document publication policy • URIs for W3C namespaces policy(2001)

  8. Application Layer • Mostly left to users • Applications of RDF: • Ontology Web Language (OWL) • CC/PP • WAI Content Guidelines • Applications of XML Schemas: • Few

  9. W3C Semantic Web Activity • Welcomes this initiative • Encourage use of others terms • Want to mix and match • RDF bootstraping this with DCES • Ontology Web Language (OWL)

  10. URI Considerations • URI schemes very expensive to deploy. • URNs getting cheaper - discovery of resolution services by DDDS • HTTP URLs very cheap • URIs do not require being online

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