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

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

Antoine Isaac

Europeana

Vogin-ip-lezing, March 20, 2014

Europeana.eu, Europe’s cultural heritage portal

Text

Image

Video

Sound

3D

30M objects from 2,200 galleries, museums, archives and libraries

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

A distribution channel

What Europeana gets (and makes available)

Descriptive metadata

Link to digital objects online

Making metadata work better

Creating a new Europeana Data Model

http://pro.europeana.eu/edm-documentation

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

EDM: an example

More granular metadata

Harvesting thesauri as linked data

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>

Contextual Resources – Places

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

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

Already re-using third-party sources

• GEMET, GeoNames, DBpedia

Enrichment by providers or Europeana

• In collaboration!

• Example: Getty vocabularieshttp://www.getty.edu/research/tools/vocabularies/lod/

Facilitating re-use

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

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

Benefiting from existing R&D efforts

EuropeanaTechcommunity

pro.europeana.eu/europeana-tech

Innovation - Searching

http://eculture.cs.vu.nl/europeana/

Innovation - Annotation

Pundit @ DM2E project http://dm2e.eu

Advocating LOD http://vimeo.com/36752317

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

Thank you

#AllezCulture !

Antoine Isaac

antoine.isaac@europeana.eu

@EuropeanaTech

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