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

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

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

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

A distribution channel

Linked Open Data?

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

Making metadata work better  Creating a new Europeana Data Model: EDM

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

EDM: an example

Representing digital representations

More granular metadata

Contextual Resources – Places

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!

(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

Ready for metadata enrichment  Europeana links objects to third-party sources GEMET, GeoNames, DBpedia  Europeana providers send richer metadata

Harvesting thesauri as linked data

Contextual resources – multilingual & semantic linked data for Concepts Harpsichord Cembalo Clavecin Clavicembalo Harpsichord Klavecimbel

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

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

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

Technological advocacy hand in hand with legal advocacy

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 , London

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

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

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

Now: Getty Art and Architecture Thesaurus in SKOS Linked Open Data!

Now: Getty AAT in Europeana

Now: Getty AAT in Europeana

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

Innovation - Searching

Innovation - Annotation DM2E project

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

Thank you #AllezCulture ! Antoine

Useful links  Europeana portal europeana.eueuropeana.eu  EuropeanaTech community pro.europeana.eu/europeana- techpro.europeana.eu/europeana- tech  Europeana Data Model documentation pro.europeana.eu/edm-documentation pro.europeana.eu/edm-documentation  Europeana Twitter  EuropeanaTech Twitter