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Linked Data and why we (librarians) should care

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Presentation for IT section Satellite meeting "Emerging trends..." Florence, 19-20 august 2009

Presentation for IT section Satellite meeting "Emerging trends..." Florence, 19-20 august 2009


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  • 1. LINKED DATA and why we (librarians) should care BERMES, Emmanuelle Bibliothèque nationale de France Paris, France IFLA satellite pre-conference Emerging trends in technology : libraries between Web 2.0, semantic Web and search technology. Florence, August 19-20, 2009
  • 2. The Issue : how to put library data directly onto the Web ?
    • Not another Protocol...
    • Not another API...
    • Just... THE WEB
  • 3. Silos of hidden data
    • Library data are silos, inaccessible to Web architecture (no URL, no links)
      • Library-specific protocols : Z39.50, SRU-SRW, OAI-PMH
      • Application-specific protocols : Web services, APIs
  • 4. Linked Data Principles
    • Use URIs as names for things
    • Use HTTP URIs so that people can look up those names.
    • When someone looks up a URI, provide useful RDF information.
    • Include RDF statements that link to other URIs, so that they can discover related things.
    Linked Data principles based on Tim Berners-Lee
  • 5. 1. Use URIs as names for things isbn:3791332724 OCLC number : 62342400 http://dbpedia.org/resource/Sandro_Botticelli http://viaf.org/19686406 http://catalogue.bnf.fr/ark:/12148/cb119585037 http://sw.opencyc.org/concept/Mx4rvvPHiZwpEbGdrcN5Y29ycA http://www.worldcat.org/oclc/62342400 http://lccn.loc.gov/2005531285
    • A bottom-up approach
  • 6. 2. Use HTTP URIs so that people can look up those names URI RDF/XML RDF/N3 ... HTML catalogue CONTENT NEGOTIATION
  • 7. 3. When someone looks up a URI, provide useful RDF information.
  • 8. 4. Include RDF statements that link to other URIs so that they can discover related things.
  • 9. ... to a Web of applications... From a Web of documents...
  • 10. ...To a Web of data
  • 11. Linked data cloud
  • 12. Linked data cloud General Interest resources
  • 13. Linked data cloud General Interest resources Social resources
  • 14. Linked data cloud General Interest resources Social resources Geographic & statistics resources
  • 15. Linked data cloud General Interest resources Social resources Geographic & statistics resources Multimedia resources
  • 16. Linked data cloud General Interest resources Social resources Geographic & statistics resources Multimedia resources Health care & life science resources
  • 17. Linked data cloud General Interest resources Social resources Geographic & statistics resources Multimedia resources Health care & life science resources Bibliographic resources
  • 18. An example : DBPedia Mobile
  • 19. Another example : BBC music Beta
  • 20. Can Bibliographic data be put directly onto the Semantic Web ?
    • Structured data
    • Data Model Issues
    • A bottom-up approach
    • Martha Yee
    • Karen Coyle
    • Trust issues
    • Metadata about metadata
    • URI design issues
    • Matching criteria / identifiers
    Some issues...
  • 21. Can Librarians be put directly onto the Semantic Web ?
    • Unpredictability of usage
    • Eric Hellman
    • Librarians speaking to machines
  • 22. Possible applications of libraries in the Linked Data
    • Vocabularies & authorities
      • Dublin Core Metadata Terms http://purl.org/dc/terms
      • VIAF http://viaf.org/
      • Library of Congress Authorities & vocabularies http://authorities.loc.gov
      • Rameau http://stitch.cs.vu.nl/rameau
      • OAI-ORE : http://www.openarchives.org/ore/
    • Data & services
      • Catalogues : Libris http://libris.kb.se/
      • Applications and services
      • Real-world use cases
  • 23. LINKED DATA a library use case
  • 24. A library use case...
    • A publisher provides basic information about a book
    < http://www.booksInc.com/products/id/1223 > onix:productNumber ''978-0-5416-0148-2'' onix:productTitle ''Voyage à Florence'' onix:author ''John Doe'' onix:publisher ''Books Inc.''
  • 25. A library use case...
    • The national library adds bibliographic and authority control
    < http://www.booksInc.com/products/id/1223 > onix:productNumber ''978-0-5416-0148-2'' onix:productTitle ''Voyage à Florence'' onix:author ''John Doe'' onix:publisher ''Books Inc.'' <http://www.bnf.fr/ark:/12148/cb123456x> dc:creator < http://viaf.org/34505049 > frbr:work ''ISTC 0A9-2002-12B4A105-7'' dc:subject <http://id.loc.gov/authorities/sh85049192#concept>
  • 26. A library use case...
    • My local library adds holding information
    < http://www.booksInc.com/products/id/1223 > onix:productNumber ''978-0-5416-0148-2'' onix:productTitle ''Voyage à Florence'' onix:author ''John Doe'' onix:publisher ''Books Inc.'' <http://www.bnf.fr/ark:/12148/cb123456x> dc:creator < http://viaf.org/34505049 > frbr:work ''ISTC 0A9-2002-12B4A105-7'' dc:subject <http://id.loc.gov/authorities/sh85049192#concept> <http://www.bnf.fr/ark:/12148/cb123456x > mods:location < http://mylocalibrary.net > mods:shelfLocator ''914.4''
  • 27. A library use case...
    • Some nice guy out there adds links from Wikipedia
    < http://www.booksInc.com/products/id/1223 > onix:productNumber ''978-0-5416-0148-2'' onix:productTitle ''Voyage à Florence'' onix:author ''John Doe'' onix:publisher ''Books Inc.'' <http://www.bnf.fr/ark:/12148/cb123456x> dc:creator < http://viaf.org/34505049 > frbr:work ''ISTC 0A9-2002-12B4A105-7'' dc:subject <http://id.loc.gov/authorities/sh85049192#concept> <http://www.bnf.fr/ark:/12148/cb123456x> mods:location < http://mylocalibrary.net > mods:shelfLocator ''914.4'' < http://dbpedia.org/page/Florence > owl:sameas < http://id.loc.gov/authorities/sh85049192#concept > dbprop:reference < http://www.booksInc.com/products/id/1223 >
  • 28. A library use case... < http://www.booksInc.com/products/id/1223 > onix:productNumber ''978-0-5416-0148-2'' onix:productTitle ''Voyage à Florence'' onix:author ''John Doe'' onix:publisher ''Books Inc.'' <http://www.bnf.fr/ark:/12148/cb123456x> dc:creator < http://viaf.org/34505049 > frbr:work ''ISTC 0A9-2002-12B4A105-7'' dc:subject <http://id.loc.gov/authorities/sh85049192#concept> <http://www.bnf.fr/ark:/12148/cb123456x> mods:location < http://mylocalibrary.net > mods:shelfLocator ''914.4'' < http://dbpedia.org/page/Florence > owl:sameas < http://id.loc.gov/authorities/sh85049192#concept > dbprop:reference < http://www.booksInc.com/products/id/1223 >
    • My library's IT staff creates a Webpage where I can find all information regarding this book, links to related books from the same author, on the same subject, the author's bio from wikipedia, comments from Amazon...
  • 29.
    • No crosswalk / mapping !
      • Each one uses his own metadata format, all triples can be aggregated
    • No data redundancy !
      • Each one creates only the data he needs, and retrieves already existing information
    • No harvesting !
      • The data is available directly on the Web
    • No branding issue !
      • The URIs allow to track down the original data whatever its origin
    • No software-specific developments !
      • Everything relies on open standards such as RDF, SPARQL... no need to learn a new protocol or query language
  • 30. Thank you – Q&A References & credits: http://www.flickr.com/photos/library_of_congress/2178285893 Tim Berners Lee's conference on linked data, TED 2009 http://www.w3.org/2009/Talks/0204-ted-tbl http://www.flickr.com/photos/generated/501445202/ http://kcoyle.blogspot.com Martha Yee's article : http://repositories.cdlib.org/postprints/3369/ http://go-to-hellman.blogspot.com/2009/08/can-librarians-be-put-directly-onto.html Linked data tutorial at ISWC 2008 : http://events.linkeddata.org/iswc2008tutorial/