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NCompass Live: Linked Data and Libraries: What? Why? How?

  1. Linked Data and Libraries: What? Why? How? Emily Dust Nimsakont Nebraska Library Commission NCompass Live Photo credit: http://www.flickr.com/photos/mytudut/5197551003/ January 11, 2012
  2. An announcement from the Library of Congress… Photo credit: http://www.flickr.com/photos/alwright1/2613979675/
  3. “…the Library community‟s data carrier, MARC, is „based on forty-year-old techniques for data management and is out of step with programming styles of today.‟” “…something new is now needed…” “The new bibliographic framework project will be focused on…Linked Data principles and mechanisms…” “A Bibliographic Framework for the Digital Age” http://www.loc.gov/marc/transition/news/framework-103111.html
  4. What is Linked Data?
  5. “…linked data describes a method of publishing structured data so that it can be interlinked and become more useful.” “It builds upon standard Web technologies such as HTTP and URIs, but rather than using them to serve web pages for human readers, it extends them to share information in a way that can be read automatically by computers.” “This enables data from different sources to be connected and queried.” http://en.wikipedia.org/wiki/Linked_data
  6. Semantic Web vs. Linked Data
  7. web of documents vs. web of data
  8. resource links to resource links to links to resource links to links to resource resource
  9. data links to data data links to data links to data data links to data data data links to data data data
  10. Relationships are key Photo credit: http://www.flickr.com/photos/brenda-starr/3509344100/
  11. Encoded meaning <h1>This is a heading.</h1> <p>This is a paragraph.</p> <h1>My Favorite Trees</h1> <p>I like oak trees.</p> <p>I also like maple trees.</p>
  12. Encoded meaning <rdf:Description rdf:about="http://www.recshop.fake/cd/Empire Burlesque"> <cd:artist>Bob Dylan</cd:artist> <cd:country>USA</cd:country> <cd:company>Columbia</cd:company> <cd:price>10.90</cd:price> <cd:year>1985</cd:year> </rdf:Description> http://www.w3schools.com/rdf/rdf_example.asp
  13. Links between entities <rdf:Description rdf:about=“http://www4.wiwiss.fu- berlin.de/bookmashup/books/0375507256”> <rev:hasReview rdf:resource=“http://www4.wiwiss.fu- berlin.de/bookmashup/reviews/0375507256_EditorialReview1” /> <dc:creator rdf:resource=“http://www4.wiwiss.fu- berlin.de/bookmashup/persons/David+Mitchell”/> <dc:format>Paperback</dc:format> <dc:identifier rdf:resource=“urn:ISBN:0375507256”/> <dc:publisher>Random House Trade Paperbacks</dc:publisher> <dc:title>Cloud Atlas: A Novel</dc:title> </rdf:Description> http://commonplace.net/2009/06/linked-data-for-libraries/
  14. data links to data data links to data links to data data links to data data data links to data data data
  15. 1. Data instead of documents 2. Relationships are key 3. Encoded meaning 4. Links between entities So what?
  16. Linked Data makes the Web into a database.
  17. How does Linked Data happen?
  18. Linked Data Principles Use HTTP URIs so Use URIs as names people can look up for things these names When someone looks up a URI, provide Include links to other useful URIs, so that they can information, using the discover more things standards Tim Berners-Lee, “Linked Data-Design Issues.” http://www.w3.org/DesignIssues/LinkedData.html
  19. URIs Uniform Resource Identifiers = unique identifiers http://www.example.com/thing1
  20. RDF Resource Description Framework Describes relationships based on triples (statements): subject-predicate-object http://www.w3.org/RDF
  21. RDF predicate subject object has A Christmas author Charles Carol Dickens
  22. RDF Graph has author A Christmas has Carol publisher Charles Dickens Penguin
  23. RDF Graph with URIs http://example.org/ hasAuthor http://example.org/books/2002275771 http://example.org/hasPublisher http://id.loc.gov/authorities/ names/n78087607/ http://example.org/publishers /12345
  24. RDF <rdf:Description rdf:about=“http://example.org/books/2002275771”> <dc:creator rdf:resource=“http://id.loc.gov/authorities/names/n780 87607”/> <dc:publisher ref:resource=“http://example.org/publishers/12345” /> </rdf:Description>
  25. Ontologies An ontology is a vocabulary of specific terms to be used to describe resources. Sound familiar?
  26. 5 Stars of Linked Open Data ★ Available on the web ★★ Available as structured data ★★★ Available in a non-proprietary format ★★★★ Use open standards to identify things, so people can point at your stuff ★★★★★ Link your data to other people‟s data to provide context http://www.w3.org/DesignIssues/LinkedData.html
  27. Linked OPEN Data Photo credit: http://www.flickr.com/photos/eirikref/727551264/
  28. Why should libraries care about Linked Data?
  29. Changes to bibliographic data
  30. Bibliographic Record In traditional Author cataloging, a Title record is one package.
  31. Bibliographic Record Bibliographic Record Bibliographic Record Records can be exchanged, but there is no way to exchange the individual pieces of information within a record.
  32. With Linked Data, a bibliographic record is made up of many pieces of data. Bibliographic Record Person And the relationships Is author of between these pieces of data are Title defined.
  33. The Bibliographic Record boundaries Person of the record can Is author of be dissolved… Title
  34. …and the Bibliographic Record data can interact with Person other Is author of information on the Title Web…
  35. …and make Bibliographic Record use of other Person data on the web. Is author of Title
  36. New federated search possibilities
  37. New ways of searching our catalogs
  38. New homes for librarians‟ skills
  39. Are there sources of linked library data?
  40. http://id.loc.gov
  41. http://viaf.org
  42. http://dewey.info/
  43. http://rdvocab.info/
  44. http://richard.cyganiak.de/2007/10/lod/
  45. What does Linked Data look like?
  46. http://www.nines.org
  47. http://www.civilwardata150.net/
  48. http://www.openlibrary.org
  49. Resources
  50. The Thirty Minute Guide to RDF and Linked Data by Ian Davis and Tom Heath http://www.slideshare.net/iandavis/30-minute- guide-to-rdf-and-linked-data
  51. Be Part of the Web - Not Just On It: Report of the Stanford Linked Data Workshop, 27 June - 1 July 2011 http://www.clir.org/pubs/reports/pub152/LinkedDataWorkshop.pdf
  52. Linked Open Data in Libraries, Archives, and Museums http://lod-lam.net/
  53. Managing Metadata by Laura Smart http://library.caltech.edu/laura/
  54. ALA Linked Data Interest Group http://connect.ala.org/node/142470
  55. Bibliographic Framework Transition Initiative http://www.loc.gov/marc/transition/
  56. BIBFRAME listserv http://listserv.loc.gov/listarch/bibframe.html
  57. Thank you! Emily Dust Nimsakont Cataloging Librarian Nebraska Library Commission emily.dust.nimsakont@nebraska.gov 800-307-2665 www.delicious.com/NLC_Reference/ncompasslive+linkeddata www.slideshare.net/nebraskaccess

Hinweis der Redaktion

  1. Linked Data makes the Web into an API.
  2. The elements of author, title, etc., only really have meaning in the context of the record.
  3. MARC format, our encoding standard, is set up to exchange records, not data.