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An Introduction to Linked Data for Librarians (2018-06-28)

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Presented to the Special Libraries Association Georgia Chapter for their Spring Luncheon. This presentation gives advice for librarians on how to get started exploring and implementing linked data.

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An Introduction to Linked Data for Librarians (2018-06-28)

  1. 1. An Introduction to Linked Data for Librarians Cliff Landis Special Libraries Association - Georgia Chapter 2018-06-28
  2. 2. The Metadata Problem: Computers are stupid (they don’t understand meanings or relationships) • What we see • What the computer sees <head></head> <body> <background> <image> <headline>Text Text Text</headline> <tool></tool> <text>Text Text Text</text> </body>
  3. 3. It all starts with proper goat anatomy...
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  5. 5. All metadata can be described as “triples” of SUBJECT – PREDICATE - OBJECT SUBJECT PREDICATE OBJECT Goat speciesName Capra aegagrus hircus Goat conservationStatus Domesticated Goat numberOfBreeds 300+ Goat distribution Global Baby goat movementStatus Handsome_pose! Baby goat hasCutenessLevel ZOMG!!!!1!
  6. 6. Challenge: OED has 19 definitions of “Plant”
  7. 7. Let’s make the Web a little smarter! A young tree, shrub, vegetable, or flower newly planted, or intended for planting; a set, a cutting, a seedling. Now chiefly Eng. regional (midl. and south.) and Irish English (north.): a young cabbage plant. (from the OED) = Step 1: Disambiguation
  8. 8. Oh, “Plant!” You mean… • • • • • Plant dbpedia Wikidat a LCSH JSTOR Topics AAT
  9. 9. Kingdom Part of Subdomain Instance of Taxonomic Rank Step 2: Linking relationships Plant Taxon Name Plantae Taxon Rank Kingdom BNCF Number 1037
  10. 10. Aiming for “5 star” Linked Open Data ● Available on the Web (whatever format) with an open license (CC0, PD, ODC, ● As above, but as machine-readable structured data (Excel spreadsheets) ● As above, but in a non-proprietary format (CSV instead of Excel) ● As above, but use URIs to denote things, so that people can point at your stuff (persistent URIs, RDF, SPARQL) ● As above, but linking your data out to other data to provide context (Linked Open Data)
  11. 11. Linked Open Data (2008-02-28)
  12. 12. Linked Open Data (2018-04-30) "Linking Open Data cloud diagram 2018, by Andrejs Abele, John P. McCrae, Paul Buitelaar, Anja Jentzsch and Richard Cyganiak." 1,184 datasets with 15,993 links
  13. 13. Library of Congress Subject Headings
  14. 14. DBpedia
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  16. 16. Neat! But what does that have to do with libraries?
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  19. 19. Facts can be described with metadata AUC Robert W. Woodruff Library has a website at
  20. 20. Facts can be described with metadata AUC Robert W. Woodruff Library has a website at AUC Robert W. Woodruff Library has a website
  21. 21. Facts can be described with metadata AUC Robert W. Woodruff Library has a website at AUC Robert W. Woodruff Library has a website SUBJECT PREDICATE OBJECT
  22. 22. Facts can be described with metadata AUC Robert W. Woodruff Library has a website at AUC Robert W. Woodruff Library has a website SUBJECT PREDICATE OBJECT _W._Woodruff_Library,_Atlanta _University_Center foaf/spec/#term_h omepage Robert W. Woodruff Library, Atlanta University Center Homepage
  23. 23. Triples, Triples Everywhere!!! SUBJECT PREDICATE OBJECT ruff_Library,_Atlanta_University_Center foaf:homepage ruff_Library,_Atlanta_University_Center foaf:isPrimaryTopicOf ert_W._Woodruff_Library,_Atlant a_University_Center ruff_Library,_Atlanta_University_Center dbp:established 1982 (xsd:integer) ruff_Library,_Atlanta_University_Center georss:point 33.75138888888889 - 84.41333333333333
  24. 24. Formats: • RDF/XML • JSON-LD • Turtle • N-Triples • RDFa Query: • SPARQL • API
  25. 25. Leveraging our unique resources
  26. 26. Pratt: Linked Jazz
  27. 27.
  28. 28. Laurentian U. catalog: Wikidata infocards
  29. 29. UTSC: Dragoman Renaissance Research Platform
  30. 30. AUC RWWL: Omeka S (alpha)
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  32. 32. Controlled Vocabularies as LOD URIs
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  34. 34. Neat! But seriously, what does that have to do with my library? Don’t worry….We’re getting there….
  35. 35. Improve findability & outreach with Wikipedia uff_Library,_Atlanta_University_Center ...But follow Wikipedia COI Best Practices! ● Infobox ● Abstract ● Wikidata Item* ● References
  36. 36.,_Atlanta_University_Center
  37. 37.
  38. 38. Don’t just link out...remember to link in
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  41. 41. We’re sitting on a data goldmine (but it has to be mined!) •We can leverage our libraries’ unique content to provide linked open data for others to remix and reuse •We can provide data we generate (statistics, analytics, door count, etc.) as linked open data for us to mine, and for others to mine nationally and globally •We can use tools to generate information visualizations of our own data and that of others
  42. 42. ...but I’m also a realist • Linked open data is open. Once you publish data, you can’t control how it will be used -- like walking in open spaces, you can’t control who will incidentally photograph you • Early adoption at large scales is often slow, difficult, and expensive (but it’s finally starting to get easier and cheaper!) • Managing linked open data is like any other metadata work -- it requires work to setup, and regular maintenance to keep up • Like all areas in the information economy, problems with quality control and authority control (e.g. “fake news”) are migrating from old media to new media -- requiring constant vigilance to ensure you’re using trustworthy sources
  43. 43. Okay, okay, so now what? Where to go from here
  44. 44. Semantic Web for beginners WATCH • Linked Open Data – What is it? – An introduction to LOD for memory organization workers • Tim Berners-Lee: The Next Web – Creator of the Web talks about its next stage of evolution • Linked Open Jazz – Using oral histories to explore relationships between artists BROWSE • – browse to get a feel for the subject-predicate-object relationships • – browse to get a feel for the use of LOD metadata standards • - browse LOD datasets available for exploration and use • SNAC Cooperative - browse how historical figures are connected through separate archival collections • LD4PE - browse Linked Data for Professional Educators to find learning resources
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