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Linked Data, Library Users, and the Discovery Tools of the Future


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Presented at Amigos Library Services online conference, Discovery Tools Now and in the Future, November 18, 2014

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Linked Data, Library Users, and the Discovery Tools of the Future

  1. 1. Linked Data, Library Users, and the Discovery Tools of the Future Emily Dust Nimsakont Cataloging Librarian, Nebraska Library Commission Discovery Tools Now and In the Future Amigos Online Conference November 18, 2014 Photo credit:
  2. 2. What is a discovery tool? “Discovery Layers are a relatively new software component for libraries that provide a search interface for users to find information held in the library’s catalog and beyond. Typically, a Discovery Layer is based on an enterprise search platform that can interact with a metadata index and will normally include additional features that allow your library to customize the search results.” definition
  3. 3. What is a discovery tool? “Discovery products provide an interface with search and retrieval capabilities, often with features such as relevancy-based ordering of search results, facets presented that can be selected to narrow results according to specific categories, contributors, or date ranges, and tools to identify related materials or to refine search queries.”
  4. 4. What is Linked Data? “Linked Data is about using the Web to connect related data that wasn't previously linked, or using the Web to lower the barriers to linking data currently linked using other methods.”
  5. 5. What is Linked Data? 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, RDF 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.”
  6. 6. resource resource resource resource resource links to links to links to links to
  7. 7. data links to data data links to links to data links to data data data data data data data data
  8. 8. HTML <h1>This is a heading.</h1> <p>This is a paragraph.</p>
  9. 9. RDF/XML <rdf:Description rdf:about="http://www.recshop.fake/cd/Empi re 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>
  10. 10. Relationships are key Photo credit:
  11. 11. We are used to connecting pieces of information based on their context. Title: A Christmas Carol Author: Charles Dickens
  12. 12. Linked Data makes the relationships explicit. predicate subject object A Christmas Carol Charles Dickens has author
  13. 13. Relationships can be established between data from various resources. Linking Open Data cloud diagram 2014, by Max Schmachtenberg, Christian Bizer, Anja Jentzsch and Richard Cyganiak.
  14. 14. What do these two things have in common? Discovery Tools Linked Data Facets Related Materials
  15. 15. What differences exist between these two things? Discovery Tools Linked Data Relevance Ranking Linked Open Data
  16. 16. Do libraries have to choose between the two? Photo credit:
  17. 17. Linked Data, RDA, and BIBFRAME
  18. 18. RDA • Resource Description and Access • Replacement for AACR2 cataloging rules • Breaks bibliographic information into data elements • Focuses on relationships •
  19. 19. BIBFRAME • Replacement for MARC (Machine Readable Cataloging) • Linked Data model • Similar (though not identical) terminology to RDA •
  20. 20. OpenCat
  21. 21. LibHub
  22. 22. Advantages of using Linked Data for discovery tools • More flexible than current situation • More integrated than ILS + discovery layer
  23. 23. Disadvantages of using Linked Data for discovery tools • Are ILS vendors ready? • Linked Data vs. Linked Open Data • What exactly should be “discoverable”? Do your library users care about outside resources?
  24. 24. Thank you! Emily Dust Nimsakont Cataloging Librarian Nebraska Library Commission