RDA and the semantic Web

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Lectio magistralis in Library Science by Gordon Dunsire, Florence University, Florence, Italy, 4th March, 2014 …

Lectio magistralis in Library Science by Gordon Dunsire, Florence University, Florence, Italy, 4th March, 2014

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  • 1. RDA and the semantic Web Lectio magistralis in Library Science by Gordon Dunsire Florence University, Florence, Italy 4th March, 2014
  • 2. In the beginning …
  • 3. In the beginning …
  • 4. 3? Toronto, 1997 In the beginning …
  • 5. General Material Designator (US) General Material Designator (UK) ISBD(G) Content vs Carrier / Haworth Structure of AACR3 Logical analysis / Delsey Type of publication Chief source of information Class of materials ItemSeries Subseries ? $£$£$£!!!
  • 6. Functional Requirements for Bibliographic Records Work Expression Manifestation Item User tasks AACR3 Item Carrier attributes Content attributes
  • 7. Functional Requirements for Bibliographic Records Work Expression Manifestation Item User tasks Carrier attributes Content attributes JSC, 2005
  • 8. Semantic Web (Berners-Lee) Structured collections of information Sets of inference rules Automated reasoning Web of linked data Web of linked documents Web of linked computing devices
  • 9. “This work has author Gordon Dunsire” Resource Description Framework (RDF) Subject – Predicate - Object Subject Predicate Object “This work” “has author” “Gordon Dunsire” ? ? ? Uniform Resource Identifier (URI) ex:1Bd38 ex:ZX3G5 “literal” For machines For humans Triple!
  • 10. ex: “This work” “Gordon Dunsire” ex:“has author”
  • 11. “Gordon Dunsire” ex: Gordon Dunsireex:“has author” ex: “This work” ex:“is author of” ex:“has name”
  • 12. “Gordon Dunsire” ex: Gordon Dunsireex:“has author” ex: “This work” ex:“is author of” ex:“has name” “G. J. Dunsire” ex:“has alternate name” ex: Scotlandex:“has country of birth” “RDA and the Semantic Web” ex:“has title” ex: “That work” ex:“has derivative work” ex:“is derivative work of”
  • 13. “Gordon Dunsire” ex: Gordon Dunsireex:“has author” ex: “This work” ex:“is author of” ex:“has name” “G. J. Dunsire” ex:“has alternate name” ex: Scotlandex:“has country of birth” “RDA and the Semantic Web” ex:“has title” ex: “That work” ex:“has derivative work” ex:“is derivative work of”
  • 14. One giant global graph
  • 15. ex: Gordon Dunsireex:“has author” ex: “This work” Data vs Ontology Data triple URI ex:“has label” ex: hasAuthor “has author” Ontology triple “Property” ex:“has type”
  • 16. RDA vocabulary example ex:“has label” rdact: 1010 “notated music”@en “schriftlich fixierte Musik”@de ex:“has label” rdact: 1016 ex: “is related to” “tactile notated music”@en ex:“has label”
  • 17. ex:“has label” ex: Property1 “has author”@en ex: Property2 ex: “is sub- property of” “has creator”@en ex:“has label” Inference rules: sub-property ex: “This work” “Gordon Dunsire” ex:“has author” ex: “This work” “Gordon Dunsire” ex:“has creator”
  • 18. RDF vocabularies: DCT + RDFS Dublin Core Terms + RDF Schema rdfs:label dcterms: creator “Creator” dcterms: Agent “Agent” rdfs:label rdfs:range “A resource that acts or has the power to act.”rdfs:comment Source of URIs
  • 19. Inference rules: range dcterms: creator dcterms: agentrdfs:range ex: Gordon Dunsiredcterms:creator ex: “This work” ex: Gordon Dunsire rdfs:type dcterms: Agent
  • 20. Data model meeting Panizzi
  • 21. Data model meeting Members of RDA and Semantic Web communities British Library, London, 30 April – 1 May 2007 “… agreed that RDA and DCMI should work together …” (Dublin Core Metadata Initiative)
  • 22. Benefits expected The library community gets a metadata standard that is compatible with the Web Architecture and that is fully interoperable with other Semantic Web initiatives The DCMI community gets a libraries application profile firmly based on the DCAM and FRBR (which will be a high profile exemplar for others to follow) The Semantic Web community get a significant pool of well thought-out metadata terms to re-use There is wider uptake of RDA
  • 23. Activities Development of an RDA Element Vocabulary Development of an RDA DC Application Profile based on FRBR and FRAD Disclosure of RDA Value Vocabularies using RDF/RDFS/SKOS
  • 24. Opaque URI (only for machines) Compact URI = rdact:1010
  • 25.
  • 26. DCAM and RDA Dublin Core Abstract Model <indecs> Basic RDA metadata structures ex: ExpressionURI rdae: “has content type” rdfs:label rdact: 1010 “notated music”@en skos:inScheme rdaterms: RDAContentType
  • 27. rdac: “Manifestation” rdfs: “domain” High-level metadata structures rdam: “has title” rdau: “has title” rdam: “has title proper” rdau: “has title proper” rdfs: “domain” sP sP sP sP = rdfs:”sub-property of” Constrained by FRBR (domain) Unconstrained
  • 28. rdac: “Work” rdfs: “domain” Relationship designators rdaw: “has creator” rdau: “has creator” rdaw: “has designer” rdau: “has designer” sP sP sP sP = rdfs:”sub-property of” rdac: “Agent” rdfs: “range”
  • 29. Entity Properties Range No Range Work 235 200 35 Expression 235 190 45 Manifestation 210 50 160 Item 50 40 10 Agent 225 175 50 Link-ability Triple clusters Triple chains Literals Relationships AttributesDomains Covering all media
  • 30. rdaw: “is video screenplay (work)” rdaw: “is screenplay (work)” rdaw: “is complemented by (work)” rdaw: “has accompanying work relationship with” rdaw: “has related work”Rich detail sub-property ladder
  • 31. rdau: “has voice actor” rdau: “has actor” rdau: “has performer” rdau: “has creator” rdaw: “has creator” Interoperability dcterms: “creator” dc: “creator” ???
  • 32. To do Publish more RDA value vocabularies Develop cross-entity elements E.g. Work-Expression relationship designators Develop Application Profile for RDA “core” Develop RDF elements for aggregated statements (RDA, ISBD, MARC, …) E.g. Place of publication -> Publication statement
  • 33. Achievements: 5+ years on Rich set of elements and value vocabularies for “bibliographic control” At global, “universal” level “a metadata standard that is compatible with the Web Architecture and that is fully interoperable with other Semantic Web initiatives” “a significant pool of well thought-out metadata terms to re-use” Wider uptake of RDA? …
  • 34. Thank you! gordon@gordondunsire.com Text of lecture http://digital.casalini.it/9788876560132