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Use of semantic technologies for publishing and re-using cultural and scientific heritage data

Use of semantic technologies for publishing and re-using cultural and scientific heritage data. Antoine Isaac SEMIC conference. June 18 2012, Brussels. ?. Europeana facts. “Single, direct and multilingual access point to the European cultural heritage.”

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Use of semantic technologies for publishing and re-using cultural and scientific heritage data

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  1. Use of semantic technologies for publishing and re-using cultural and scientific heritage data Antoine Isaac SEMIC conference June 18 2012, Brussels

  2. ?

  3. Europeana facts “Single, direct and multilingual access point to the European cultural heritage.” European Parliament, 27 September 2007 • 23.5 million objects • more than 2.200 institutions • 33 countries

  4. Who submits data to Europeana? Horizontal Aggregators Vertical Aggregators National Aggregators Archives Culture Grid APEnet Libraries GLAMs The European Library Regional Aggregators Flanders museums Dark Aggregators ATHENA ELocal Film archives European Film Gateway Mn;kl;k;klj;lkj;lkj;jh;lkj;klj;klj;klj;klj GLAMs GLAMs Museums

  5. 1. Thumbnails 2. Metadata 3. Links to digital objects online What is submitted to Europeana?

  6. TEXT IMAGE VIDEO AUDIO

  7. Making metadata work for Europeana • Building a search engine on top of metadata is difficult Traditional metadata quality problems: correctness, coverage • Especially when data is so heterogeneous 100s of formats, multilingual data • We currently use a simple flat interoperability format (ESE)

  8. More semantics-enabled services • Enhance access by semantics Query expansion, clustering of results Exploiting various relations: "located in", “more specific concept"… • Goal: to make richer data and services available to us and others • Semantics are already there, in original metadata Thesauri, classifications… ESE loses information

  9. Building a "semantic layer” context

  10. Matches interest for linked data in libraries, archives and museums LOD-LAM

  11. Available Linked Library Data http://www.w3.org/2005/Incubator/lld/XGR-lld-vocabdataset/

  12. Available Library Linked Data • Element sets/schemas/ontologies SKOS, Dublin Core, OAI-ORE… • Value vocabularies/thesauri/authority lists LCSH, VIAF… • Datasets British Library, Chronicling America…

  13. Europeana and Linked Data • Provide trusted, reference data for cultural objects • Promote the use of the technology • Promoting the exchange of data in the community and with third parties: Open (meta)data!

  14. Europeana and Linked Data http://vimeo.com/36752317

  15. Some steps in production services

  16. Re-use and linking • Currently: GeoNames, GEMET… • Data re-use can be serendipitous! • From our domain (VIAF, UDC) or others (Eurovoc) • Multilingual resources are key for us

  17. Europeana Data Model • Representing objects & others: persons, places... • Linking to internal or external data sources • Separating original data from enrichments • Enabling domain-specific data profiles • Model re-uses existing vocabularies http://pro.europeana.eu/edm-documentation

  18. data.europeana.eu • Europeana Linked Open Data Pilot • Fully open metadata • 2.4 M objects • 200 individual providers • 15 countries

  19. Challenges of semantic technology • Really big impact on processes IF you wish so • Requires a lot of education/evangelisation • More complex data modeling is an art • finding the right balance & linking to requirements • Linking datasets remain difficult • needs tooling, involvement of stakeholders

  20. Ongoing work • EDM implementation in • Data harvesting • Search, browse etc. • Data publishing interfaces Search API, Linked Open Data, data dumps, OAI-PMH… • Metadata enrichment

  21. Summary: benefits of semantic technologies for Europeana • Vocabularies and datasets to re-use • Flexible approach to building & re-using standards • More flexible approach to interoperability • custom vocabularies co-existing with standard ones • No constraints on the granularity of the data model • Technical ease of connecting and publishing data • Vision relates to open data strategies

  22. ISA? • Contribution to data modeling and exchange Core vocabularies give good hints on what is needed • Source of data for re-use • Helping our data to be re-used ADMS

  23. Thank you Antoine Isaac aisaac@few.vu.nl

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