A portrait of Europeana as a Linked Open Data case


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Presentation at ISKO-UK meeting on Making Metadata work

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  • Les Miserables: Victor Hugo’s handwritten manuscripts: http://www.europeana.eu/portal/record/9200103/5372912AF66AB529E188218BC1F747E75EB1A18F.html
    BnF, public domain
    Matisse ‘53 in the form of a double helix’ http://www.europeana.eu/portal/record/9200104/F8D60AB9136C8A59B59DF1CFEC278A6CABA8B0C6.htmlThe Wellcome Library (CC-BY-NC-ND)
    ‘söprűtánc’ – Hungarian traditional dance http://www.europeana.eu/portal/record/08901/E1A7B01BE4AED87FD239672F4F3941F52262D6B2.html
    Hungarian Academy of Sciences Institute for Musicology, public domain
    ‘Neurologico reggae’ Music album http://www.europeana.eu/portal/record/08901/ADC241BCBF8470988DBA6EEAFCF13F14D88E5534.html
    DISMARC – EuropeanaConnect Paid Access
    ‘Castle of Kavala’ 3D exploration of a Greek castle http://www.europeana.eu/portal/record/2020703/05607B24D15BD516EE2B765F74CDA39C7427F7FB.html
    Cultural and Educational Technology Institute - Research Centre Athen CARARE CC-BY-NC-ND
  • All partners send us descriptions of their assets, which we aggregate in a single service
  • Example used is:
    Een vrouw met een kind in een kelderkamer by Pieter de Hooch, Rijksmuseum, public domain
  • View the object at: http://www.europeana.eu/portal/record/09102/_CM_0161930.html
  • Dm2e:writer definition at http://onto.dm2e.eu/schemas/dm2e/1.0/#writer
  • This object is found among results for a query for ‘harpsichords’
  • Data is available as ‘data dumps’ for Linked Open Data initiatives from data.europeana.eu.
    Europeana's move to CC0 is a step change in open data access. Releasing data from across the memory organisations of every EU country sets an important new international precedent, a decisive move away from the world of closed and controlled data.
    Note that previews can only be used in accordance with the rights information displayed next to them.
    HISPANA and Partage Plus both use the Europeana API to include Europeana search results on their own websites
  • We want to be a catalyst for change in the world of cultural heritage.
  • A portrait of Europeana as a Linked Open Data case

    1. 1. Europeana as a Linked Open Data case (in progress) Antoine Isaac ISKO UK Seminar “Making Metadata Work” London, June 23, 2014
    2. 2. Europe’s platform to access cultural heritage Currently 33M objects
    3. 3. Built on descriptive metadata from 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. What Europeana gets (and makes available) Descriptive metadata Link to digital objects online
    5. 5. A distribution channel
    6. 6. Linked Open Data? http://vimeo.com/36752317
    7. 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. 8. Making metadata work better  Creating a new Europeana Data Model: EDM http://pro.europeana.eu/edm-documentation
    9. 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. 10. EDM: an example http://europeana.eu/portal/record/09102/_CM_0161930.html
    11. 11. More granular metadata
    12. 12. Contextual Resources – Places
    13. 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. 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. 15. Ready for metadata enrichment  Europeana links objects to third-party sources • GEMET, GeoNames, DBpedia  Europeana providers send richer metadata
    16. 16. Harvesting thesauri as linked data
    17. 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. 18. Contextual resource benefits - Work in progress  Allows to present users with richer context  Boosts multilingual search  And multilingual display
    19. 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. 20. 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
    21. 21. Technological advocacy hand in hand with legal advocacy http://vimeo.com/36752317
    22. 22. <slight digression>
    23. 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. 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. 25. SKOS and Linked Data Antoine Isaac ISKO, London, Sept. 14th 2010
    26. 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. 27. Now: Getty Art and Architecture Thesaurus in SKOS Linked Open Data! http://www.getty.edu/research/tools/vocabularies/lod/
    28. 28. Now: Getty AAT in Europeana http://europeana.eu/portal/record/2023004/24062A23_priref_229.html
    29. 29. Now: Getty AAT in Europeana http://europeana.eu/portal/record/2023004/24062A23_priref_229.html
    30. 30. </slight digression>
    31. 31. Still many R&D efforts EuropeanaTech community pro.europeana.eu/europeana-tech
    32. 32. Innovation - Searching http://eculture.cs.vu.nl/europeana/
    33. 33. Innovation - Annotation Pundit @ DM2E project http://dm2e.eu
    34. 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. 35. Thank you #AllezCulture ! Antoine Isaac antoine.isaac@europeana.eu @EuropeanaTech
    36. 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