Europeana as a Linked Open Data case (in progress)

1. Europeana as a Linked Open Data case (in progress) Antoine Isaac ISKO UK Seminar “Making Metadata Work” London, June 23, 2014

2. Europe’s platform to access cultural heritage Currently 33M objects

3. Built on descriptive metadatafrom a broad, heterogeneous network 2,300 galleries, museums, archives and libraries Libraries National Aggregators Culture.fr The European Library Regional Aggregators Archives Audiovisualcollections Thematic collections APEX Musées Lausannois European Film Gateway Europeana Fashion

4. What Europeana gets (and makes available) Descriptive metadata Link to digital objects online

5. A distribution channel

6. Linked Open Data? • http://vimeo.com/36752317

7. Realizing Linked Data bits by bits Incremental progress on Europeana’s various facets • Data ingestion • Data enrichment • Front-end services: search, display • Data publication

8. Making metadata work better • Creating a new Europeana Data Model: EDM http://pro.europeana.eu/edm-documentation

9. Prior to EDM: flat metadata 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 between objects and persons, places… • Mixing data on real object and digital content • Causing a lot of mapping quality problems

10. EDM: an example http://europeana.eu/portal/record/09102/_CM_0161930.html

11. More granular metadata

12. Contextual Resources – Places

13. Collaborative, soft standardization • Cross-community development, involving library, archive and museum experts and academic partners • Data model that re-uses several existing models Semantic Web paradigm just allows mixing them!

14. (Future work:) 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. Ready for metadata enrichment • Europeana links objects to third-party sources • GEMET, GeoNames, DBpedia • Europeana providers send richer metadata

16. Harvesting thesauri as linked data

17. 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>

18. Contextual resource benefits - Work in progress • Allows to present users with richer context • Boosts multilingual search • And multilingual display

19. Linked-data compatible data re-use 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

20. CC Different options Metadata - descriptive object information Content - digital objects on the site of the provider The legal side of data Europeana and partners provide open metadata

21. Technological advocacy hand in hand with legal advocacy • http://vimeo.com/36752317

22. <slight digression>

23. On practical aspects of enhancing semantic interoperability using SKOS and KOS alignment Antoine ISAAC KRR lab, Vrije Universiteit Amsterdam National Library of the Netherlands ISKO UK Meeting, July 21 2008, London

24. Enhancing semantic interoperability using SKOS Conclusion • Representing KOSs using SKOS • Main features • Practical issues • Demo • SKOS and semantic alignment of KOSs Despite some issues, SKOS provides a crucial contribution to enhance interoperability of KOSs

25. SKOS and Linked Data Antoine Isaac ISKO, London, Sept. 14th 2010

26. Conclusion Publication and linking of linked KOS data is still work in progress, but • We are now in position of realizing the issues and working towards solving them • We can start building applications that make use of the wealth of data already available or yet to come Many KO resources to re-use and link to

27. Now: Getty Art and Architecture Thesaurus in SKOS Linked Open Data! http://www.getty.edu/research/tools/vocabularies/lod/

28. Now: Getty AAT in Europeana http://europeana.eu/portal/record/2023004/24062A23_priref_229.html

29. Now: Getty AAT in Europeana http://europeana.eu/portal/record/2023004/24062A23_priref_229.html

30. </slight digression>

31. Still many R&D efforts EuropeanaTech community pro.europeana.eu/europeana-tech

32. Innovation - Searching http://eculture.cs.vu.nl/europeana/

33. Innovation - Annotation Pundit @ DM2E project http://dm2e.eu

34. Conclusions • Linked data presents big opportunities and challenges for Europeana and its partners • Not implementing the full technical stack at once already bring benefits

35. Thank you #AllezCulture ! Antoine Isaac antoine.isaac@europeana.eu @EuropeanaTech

36. 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