20110330 bruxelles doc_freedom
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Europeana at Document Freedom Day
![Linked Open Europeana: Semantic Leveraging of European Cultural Heritage Prof. Dr. Stefan Gradmann Humboldt-Universität zu Berlin / School of Library and Information Science [email_address]](https://image.slidesharecdn.com/20110330bruxellesdocfreedom-110330032850-phpapp02/85/20110330-bruxelles-doc_freedom-1-320.jpg)
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20110330 bruxelles doc_freedom
- 1. Linked Open Europeana: Semantic Leveraging of European Cultural Heritage Prof. Dr. Stefan Gradmann Humboldt-Universität zu Berlin / School of Library and Information Science [email_address]
- 3. Linked Data: What is it, how does it work?
- 4. Linked Europeana ... Object Representations in Context
- 5. … and what can you do with that?
- 6. Conclusion : on the importance of being 'open'
- 8. How Europeana Came About Google Books in 2005 as seen by the Canard Enchainé ...
- 10. -> Joint declaration of six European Governments … Chirac and Schröder among those!
- 11. Declaration by Commissioner Reding on the “European Digital Library” flagship as part of i2010.
- 12. Launch (and crash) of a first prototype 20.11.2008
- 13. Constant growth and stable operations since then, > 15M objects represented to date
- 14. But basically yet another portal, a big one – but nothing innovative ...
- 16. The Web of Documents Information Management: A Proposal (TBL, 1989)
- 20. Humans can: again we recognize implied context!
- 23. hierarchies of classes and properties,
- 24. inheritance
- 26. … and new opportunities: Triple Sets and Reasoning (1)
- 27. Triple Sets and Reasoning (2)
- 28. Triple Sets and Reasoning (3) -> Potential of novel digital heuristics!
- 30. But basically we extend the WWW in syntax (RDF) and in scope (enable representation of virtually everything in the Web). And this results in ...
- 31. … Linked Data Copyright © 2008 W3C (MIT, ERCIM, Keio) http://www.w3.org/2008/Talks/0617-lod-tbl/#(4)
- 32. A few Bubbles: 5/2007 < Over 500 million RDF triples < Around 120,000 RDF links between data sources © Richard Cyganiak
- 33. Quite some Bubbles: 9/2008 © Richard Cyganiak
- 34. Many Bubbles: 7/2009 © Richard Cyganiak < Over 13.1 billion RDF triples < Over 142 million RDF links between data sources
- 35. (Too?) Many Bubbles: 9/2010 http://richard.cyganiak.de/2007/10/lod/lod-datasets_2010-09-22_colored.html
- 36. The Europeana Data Model (EDM) Making Europeana Part of Linked Data
- 38. Builds a roof on top of various cultural heritage domains (Archives, Museums, Libraries, Audio-Visual)
- 39. Builds on standards such as SKOS, DCterms and OAI-ORE …
- 40. allows for Semantic Web representation of Cultural Heritage
- 42. … some context
- 43. … more context
- 46. PND and SWD (prototype)
- 47. Geonames
- 48. LCSH
- 49. …
- 53. -> Visualise Triples and Context © Eytan Adar
- 54. -> Visualise Cultural Context Mapping the Republic of Letters: https://republicofletters.stanford.edu/#maps Or again the Finnish example (Kultuurisampo): http://www.kulttuurisampo.fi/kulsa/historiallisetKartat.shtml
- 58. But it gets quite expensive that way …
- 59. … much too expensive, probably, for Europeana to afford!
- 62. No income to be generated from data access and use
- 65. -> What is the actual value of context (in business terms!)?
- 67. Martin Doerr, Stefan Gradmann, Steffen Hennicke, Antoine Isaac, Carlo Meghini, Herbert van de Sompel: The Europeana Data Model. IFLA 2010 (Gothenburg). Session on „Libraries and the Semantic Web“. http://www.ifla.org/files/hq/papers/ifla76/149-doerr-en.pdf
- 68. Stefan Gradmann: Knowledge = Information in Context: on the Importance of Semantic Contextualisation in Europeana. Europeana White Paper 1. http://www.scribd.com/doc/32110457/Europeana-White-Paper-1
- 69. Eero Hyvönen: Preventing Interoperability Problems Instead of Solving Them. Semantic Web Journal, no. 2-3, December, 2010. http://www.semantic-web-journal.net/content/new-submission-preventing-interoperability-problems-instead-solving-them
- 70. A lot more mercifully skipped ...
- 71. Thank you for your attention!
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- The current data model of Europeana are the “Europeana Semantic Elements” (ESE). ESE addresses the issue of interoperability between the data from the different domains represented in Europeana by reducing the data to a “flat”, Dublin-Core like representation. This is a “simple and robust” approach but it has some drawbacks: The original metadata and information perspective are not visible anymore. And at the same time we can not specialize to finer-grained models or connect to external resources like LOD community. The EDM addresses exactly these shortcomings . It tries to transcend the different information perspectives which are represented in Europeana. It acts as a top-level ontology in order to make objects from different domains interoperable while still preserving the original data. The EDM is destined to replace ESE after the 2011 release of Europeana. The ESE will then be an „application profile“ of EDM. That means that all ESE data in Europeana will be still compatible with the new system.
- First a few words about the envisioned information architecture of Europeana: This is how the information space of Europeana will be restructured : At the “bottom” we have the objects which are provided to Europeana. Above we have the “Semantic Data Layer” which is new. It contains various kinds of KOSs with knowledge about people, places, concepts, and so on. These concepts are linked to the objects below and thereby contextualize and enrich them.
- Europeana intends to connect to the Linked Open Data community. In the Linked Open Data cloud we find many more knowledge sources like Dbpedia, Geonames, or Library of Congress Subject Headings. Europeana wants to use them to further contextualize and enrich the objects in its information space. At the same time Europeana wants to make its own data available to other communities. The EDM is crucial for realizing this vision. [ LOD cloud July 2009 ]