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Semantic Web, Linked Data: the Europeana case(s)

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Presentation at VOGIN-IP-lezing 2014, 20 March 2014, http://vogin-ip-lezing.net/vogin-ip-lezing-2014/

Publié dans : Technologie

Semantic Web, Linked Data: the Europeana case(s)

  1. 1. Semantic Web, Linked Data: the Europeana case(s) Antoine Isaac Europeana Vogin-ip-lezing, March 20, 2014
  2. 2. Europeana.eu, Europe’s cultural heritage portal Text Image Video Sound 3D 30M objects from 2,200 galleries, museums, archives and libraries
  3. 3. A broad, heterogeneous network Audiovisual collections National Aggregators Regional Aggregators Archives Thematic collections Libraries Musées Lausannois Culture.frThe European Library APEX European Film Gateway Europeana Fashion 2,300 galleries, museums, archives and libraries
  4. 4. A distribution channel
  5. 5. What Europeana gets (and makes available) Descriptive metadata Link to digital objects online
  6. 6. Making metadata work better  Creating a new Europeana Data Model http://pro.europeana.eu/edm-documentation
  7. 7. Prior to EDM: flat records dc:contributor, dc:creator, dc:date, dc:format, dc:identifier, dc:language, dc:publisher, dc:relation, dc:source, dcterms:alternative, dcterms:extent, dcterms:temporal, dcterms:medium, dcterms:created, dcterms:provenance, dcterms:issued, dcterms:conformsTo, dcterms:hasFormat, dcterms:isFormatOf, dcterms:hasVersion, dcterms:isVersionOf, dcterms:hasPart, dcterms:isPartOf, dcterms:isReferencedBy, dcterms:references, dcterms:isReplacedBy, dcterms:replaces dcterms:isRequiredBy, dcterms:requires dcterms:tableOfContents europeana:type, europeana:dataProvider, europeana:provider, europeana:isShownAt, europeana:isShownBy, europeana:object, europeana:rights  No links e.g. between objects and context entities (persons, places)  Mixing data on real object and digital content  A lot of mapping quality problems
  8. 8. EDM: an example
  9. 9. More granular metadata
  10. 10. Harvesting thesauri as linked data
  11. 11. Contextual resources – multilingual & semantic linked data for Concepts <skos:Concept rdf:about="http://www.mimo-db.eu/InstrumentsKeywords/2251"> <skos:prefLabel xml:lang="">Harpsichord</skos:prefLabel> <skos:prefLabel xml:lang="de">Cembalo</skos:prefLabel> <skos:prefLabel xml:lang="sv">Cembalo</skos:prefLabel> <skos:prefLabel xml:lang="fr">Clavecin</skos:prefLabel> <skos:prefLabel xml:lang="it">Clavicembalo</skos:prefLabel> <skos:prefLabel xml:lang="en">Harpsichord</skos:prefLabel> <skos:prefLabel xml:lang="nl">Klavecimbel</skos:prefLabel> <skos:broader> <skos:Concept rdf:about="http://www.mimo- db.eu/InstrumentsKeywords/2239"/> </skos:broader> </skos:Concept>
  12. 12. Contextual Resources – Places
  13. 13. Collaborative, soft standardization  EDM is a cross-community development, involving library, archive and museum experts, plus academic partners  A data model that re-uses several existing Semantic Web-based models
  14. 14. Different semantic grains  Adopts Semantic Web principle of specializing classes and properties  Enables extensions, “applications profiles”, based on needs and best practices from specific sectors or domains
  15. 15. Ready for metadata enrichment  Already re-using third-party sources • GEMET, GeoNames, DBpedia  Enrichment by providers or Europeana • In collaboration! • Example: Getty vocabularies http://www.getty.edu/research/tools /vocabularies/lod/
  16. 16. Facilitating re-use
  17. 17. Multiple Channels  Search API Results in JSON, JSON-LD, RDF/XML  Semantic mark-up on portal schema.org, OpenGraph  Linked Open Data prototype Content negotiation, RDF dumps, SPARQL endpoint
  18. 18. Content - digital objects on the site of the provider Metadata - descriptive object information Different options The legal side of data CC Europeana and partners provide open metadata
  19. 19. Benefiting from existing R&D efforts EuropeanaTech community pro.europeana.eu/europeana-tech
  20. 20. Innovation - Searching http://eculture.cs.vu.nl/europeana/
  21. 21. Innovation - Annotation Pundit @ DM2E project http://dm2e.eu
  22. 22. Advocating LOD http://vimeo.com/36752317
  23. 23. Conclusions  Big opportunities and challenges for Europeana and its partners  Not implementing the full Semantic Web technical stack at once already bring benefits  Seeing where the general Linked Data vision can change things
  24. 24. Thank you #AllezCulture ! Antoine Isaac antoine.isaac@europeana.eu @EuropeanaTech
  25. 25. Useful links  Europeana portal europeana.eu  EuropeanaTech community pro.europeana.eu/europeana- tech  Europeana Data Model documentation pro.europeana.eu/edm-documentation  Europeana Twitter @EuropeanaEU  EuropeanaTech Twitter @EuropeanaTech