0
Linked Open Data and Libraries
IST Friday Morning Seminar
uWaterloo, Dec. 13, 2013
Alison Hitchens
Cataloguing & Metadata ...
Agenda
• Explanation of linked (open) data
• Possibilities for linked open data and libraries,
with example projects
• Cur...
LINKED (OPEN) DATA

Hitchens - LOD & Libraries - Dec. 2013

3
Defining Linked Data
• describes a method of publishing structured
data so that it can be interlinked and become
more usef...
The Web of Documents

Hitchens - LOD & Libraries - Dec.
http://en.wikipedia.org/wiki/Margaret_Atwood 2013

5
Documents linked to Documents
<p><b>Margaret Eleanor Atwood</b> ... (born
November 18, 1939) is a Canadian poet, novelist,...
The Web of Things & Structured Data

http://dbpedia.org/page/Margaret_Atwood
Hitchens - LOD & Libraries - Dec. 2013

7
Statements about things
Margaret Atwood is a person
Margaret Atwood was born in Ottawa
Margaret Atwood writes speculative ...
Resource Description Framework
(RDF) Triples
Subject

Predicate

Object

Is a (has type)
Margaret
Atwood

Margaret
Atwood
...
From Tables to Graphs
Has homepage

Margaret
Atwood

Is a

Subject
Was born

http://www.margaretat
wood.ca/

Was born in

...
Joining Graphs
Margaret
Atwood
Subject
Was born

Is a
Person

Was born in
Ottawa

Canada

1939-11-18

Capitol of
Ottawa

B...
Use URIs
http://dbpedia.org/page/Mar
garet_Atwood
Subject

http://dbpedia.org/ontology/birthPlace

http://dbpedia.org/
ont...
sameAs: Join Different Datasets
Ottawa in dbPedia =
http://dbpedia.org/page/Ottawa

owl:sameAs
Ottawa in Freebase:
http://...
Serialization of RDF – XML, Turtle, etc.
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:skos="http...
On Ontologies

Hitchens - LOD & Libraries - Dec. 2013
From FOAF Vocabulary Specification 0.98 http://xmlns.com/foaf/spec/
...
Using Linked Data
• Create applications to
mash-up data from
multiple sources
• Make use of embedded
data in html
• Use SP...
LINKED OPEN DATA AND LIBRARIES

Hitchens - LOD & Libraries - Dec. 2013

17
Sharing Library Data
• Libraries have trustworthy data
• Libraries have many vocabularies and
classifications
• Libraries ...
Virtual International Authority File
(VIAF)

VIAF: http://viaf.org/viaf/98029748/
Hitchens - LOD & Libraries - Dec. 2013
D...
Library of Congress Vocabularies
(http://id.loc.gov/)

Hitchens - LOD & Libraries - Dec. 2013

20
Libraries have unique collections

Source: Pan-Canadian Documentary Heritage Network Linked Open Data Visualizaton “Proof-...
OCLC WorldCat Records as LOD

http://www.worldcat.org/oclc/10277993; can add .rdf, .ttl Dec. 2013http://www.worldcat.org/o...
Libraries have holdings data

Available at libraries near you:
Waterloo Public Library
Kitchener Public Library
Hitchens -...
Libraries can consume data
• Provide contextual information in our
catalogues
• Help users make connections
• Lead users t...
Augment our catalogues

Austrian Library Network’s instance of Primo
http://search.obvsg.at/primo_library/libweb/action/se...
Linked Jazz

Hitchens - LOD & Libraries - Dec. 2013

http://linkedjazz.org/network/; video about Linked Jazz http://vimeo....
CURRENT STATE OF LOD IN
LIBRARIES AND ARCHIVES
Hitchens - LOD & Libraries - Dec. 2013

27
Where are we now?
• Releasing data
• Developing new data frameworks (BIBFRAME)
and conversion tools (XC)
• Developing use ...
The 5 Stars of LOD

http://inkdroid.org/journal/2010/06/04/the-5-stars-of-openlinked-data/ Tim Berners-Lee quoted by Libra...
Resources
Tim Berners-Lee (2009) Design Issues. Linked Data
http://www.w3.org/DesignIssues/LinkedData.html
Tim Berners-Lee...
Resources
Corey Harper (2013). Linked Data: a Library, Archive & Museum Perspective:
LLD, LOD-LAM and Linking Scholarship....
Resources
Linked Data: Connect Distributed Data Across the Web http://linkeddata.org/
(open access) (includes the LOD Clou...
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Linked open data and libraries

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  1. 1. Linked Open Data and Libraries IST Friday Morning Seminar uWaterloo, Dec. 13, 2013 Alison Hitchens Cataloguing & Metadata Librarian
  2. 2. Agenda • Explanation of linked (open) data • Possibilities for linked open data and libraries, with example projects • Current state of linked open data in libraries and archives Hitchens - LOD & Libraries - Dec. 2013 2
  3. 3. LINKED (OPEN) DATA Hitchens - LOD & Libraries - Dec. 2013 3
  4. 4. Defining 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.” (emphasis added) From Wikipedia linked data page Hitchens - LOD & Libraries - Dec. 2013 4
  5. 5. The Web of Documents Hitchens - LOD & Libraries - Dec. http://en.wikipedia.org/wiki/Margaret_Atwood 2013 5
  6. 6. Documents linked to Documents <p><b>Margaret Eleanor Atwood</b> ... (born November 18, 1939) is a Canadian poet, novelist, literary critic, essayist, and environmental activist. She is a winner of the <a href="/wiki/Arthur_C._Clarke_Award" title="Arthur C. Clarke Award">Arthur C. Clarke Award</a> and Prince of Asturias Award for Literature, has been shortlisted for the Booker Prize... Many of her poems have been inspired by myths and fairy tales, which have been interests of hers from an early age</p> Hitchens - LOD & Libraries - Dec. 2013 6
  7. 7. The Web of Things & Structured Data http://dbpedia.org/page/Margaret_Atwood Hitchens - LOD & Libraries - Dec. 2013 7
  8. 8. Statements about things Margaret Atwood is a person Margaret Atwood was born in Ottawa Margaret Atwood writes speculative fiction Margaret Atwood influenced Barbara Kingsolver Margaret Atwood has homepage http://www.margaretatwood.ca/ Hitchens - LOD & Libraries - Dec. 2013 8
  9. 9. Resource Description Framework (RDF) Triples Subject Predicate Object Is a (has type) Margaret Atwood Margaret Atwood Person Was born in Ottawa Hitchens - LOD & Libraries - Dec. 2013 9
  10. 10. From Tables to Graphs Has homepage Margaret Atwood Is a Subject Was born http://www.margaretat wood.ca/ Was born in Person Ottawa 1939-11-18 Record ID CP001 Name Margaret Atwood Type Person Place of Birth Ottawa Date of Birth 1939-11-18 Hitchens - LOD & Libraries - Dec. 2013 http://www.margaretatwood.ca/ 10 Homepage
  11. 11. Joining Graphs Margaret Atwood Subject Was born Is a Person Was born in Ottawa Canada 1939-11-18 Capitol of Ottawa Birthplace of Hitchens - LOD & Libraries - Dec. 2013 Has population 883,391 Bruce Cockburn 11
  12. 12. Use URIs http://dbpedia.org/page/Mar garet_Atwood Subject http://dbpedia.org/ontology/birthPlace http://dbpedia.org/ ontology/birthDate http://dbpedia.org/page/Ottawa 1939-11-18 Hitchens - LOD & Libraries - Dec. 2013 12
  13. 13. sameAs: Join Different Datasets Ottawa in dbPedia = http://dbpedia.org/page/Ottawa owl:sameAs Ottawa in Freebase: http://rdf.freebase.com/ns/m.05ksh owl:sameAs Ottawa in Geonames: http://sws.geonames.org/6094817/ Hitchens - LOD & Libraries - Dec. 2013 13
  14. 14. Serialization of RDF – XML, Turtle, etc. <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:nyt="http://data.nytimes.com/elements/” xmlns:owl="http://www.w3.org/2002/07/owl#" > <rdf:Description rdf:about="http://data.nytimes.com/N10507958644473712303"> <nyt:associated_article_count rdf:datatype="http://www.w3.org/2001/XMLSchema#int">11</nyt:associated_article_co unt> <skos:prefLabel xml:lang="en">Atwood, Margaret</skos:prefLabel> <rdf:type rdf:resource="http://www.w3.org/2004/02/skos/core#Concept"/> ... <owl:sameAs rdf:resource="http://dbpedia.org/resource/Margaret_Atwood"/> <nyt:topicPage rdf:resource="http://topics.nytimes.com/top/reference/timestopics/people/a/margaret_ atwood/index.html"/> From New York Times linked data page for Margaret Atwood (abridged): Hitchens - LOD & Libraries - Dec. 2013 http://data.nytimes.com/N10507958644473712303 ; http://data.nytimes.com/N10507958644473712303.rdf 14
  15. 15. On Ontologies Hitchens - LOD & Libraries - Dec. 2013 From FOAF Vocabulary Specification 0.98 http://xmlns.com/foaf/spec/ 15
  16. 16. Using Linked Data • Create applications to mash-up data from multiple sources • Make use of embedded data in html • Use SPARQL query language for RDF Image of Google Knowledge Graph Hitchens - LOD & Libraries - Dec. 2013 results for Margaret Atwood 16
  17. 17. LINKED OPEN DATA AND LIBRARIES Hitchens - LOD & Libraries - Dec. 2013 17
  18. 18. Sharing Library Data • Libraries have trustworthy data • Libraries have many vocabularies and classifications • Libraries have unique collections • Libraries have holdings data Hitchens - LOD & Libraries - Dec. 2013 18
  19. 19. Virtual International Authority File (VIAF) VIAF: http://viaf.org/viaf/98029748/ Hitchens - LOD & Libraries - Dec. 2013 Dbpedia: http://dbpedia.org/page/Nelson_Mandela 19
  20. 20. Library of Congress Vocabularies (http://id.loc.gov/) Hitchens - LOD & Libraries - Dec. 2013 20
  21. 21. Libraries have unique collections Source: Pan-Canadian Documentary Heritage Network Linked Open Data Visualizaton “Proof-of-Concept” Out of the trenches: linked open data of the first world war: final report. Image from p. 11 Hitchens - LOD & Libraries - Dec. 2013 http://www.canadiana.ca/sites/pub.canadiana.ca/files/PCDHN%20Proof-of-concept_Final-Report-ENG_0.pdf 21
  22. 22. OCLC WorldCat Records as LOD http://www.worldcat.org/oclc/10277993; can add .rdf, .ttl Dec. 2013http://www.worldcat.org/oclc/10277993.ttl Hitchens - LOD & Libraries - etc. E.g. 22
  23. 23. Libraries have holdings data Available at libraries near you: Waterloo Public Library Kitchener Public Library Hitchens - LOD & Libraries - Dec. 2013 University of Waterloo 23
  24. 24. Libraries can consume data • Provide contextual information in our catalogues • Help users make connections • Lead users to external information sources • Connect across silos Hitchens - LOD & Libraries - Dec. 2013 24
  25. 25. Augment our catalogues Austrian Library Network’s instance of Primo http://search.obvsg.at/primo_library/libweb/action/search.do?m enuitem=0&fromTop=true&fromPreferences=false&fromEshelf=fa lse&vid=ACC Hitchens - LOD & Libraries - Dec. 2013 25
  26. 26. Linked Jazz Hitchens - LOD & Libraries - Dec. 2013 http://linkedjazz.org/network/; video about Linked Jazz http://vimeo.com/68308675 26
  27. 27. CURRENT STATE OF LOD IN LIBRARIES AND ARCHIVES Hitchens - LOD & Libraries - Dec. 2013 27
  28. 28. Where are we now? • Releasing data • Developing new data frameworks (BIBFRAME) and conversion tools (XC) • Developing use cases • Prototypes and proofs of concept • A lot of learning! Hitchens - LOD & Libraries - Dec. 2013 28
  29. 29. The 5 Stars of LOD http://inkdroid.org/journal/2010/06/04/the-5-stars-of-openlinked-data/ Tim Berners-Lee quoted by Libraries - Dec. 2013 Ed Summers Hitchens - LOD & 29
  30. 30. Resources Tim Berners-Lee (2009) Design Issues. Linked Data http://www.w3.org/DesignIssues/LinkedData.html Tim Berners-Lee (2009) The next web. A TED talk, February 2009. access at http://www.ted.com/talks/tim_berners_lee_on_the_next_web.htm l (open access) Karen Coyle (2012). “Is linked data the answer?” Coyle’s Information Thurs. Oct. 18, 2012. http://kcoyle.blogspot.ca/2012/10/is-linkeddata-answer.html (open access) Karen Coyle. Understanding the semantic web: bibliographic data and metadata. Chicago: American Library Association, 2010 (Library Technology reports ; v. 46, no. 1) access at http://www.metapress.com.proxy.lib.uwaterloo.ca/content/g212v1 783607/ (uWaterloo has subscription) Hitchens - LOD & Libraries - Dec. 2013 30
  31. 31. Resources Corey Harper (2013). Linked Data: a Library, Archive & Museum Perspective: LLD, LOD-LAM and Linking Scholarship. Presented at Linked Ancient World Data Institute, May 31, 2013. http://www.slideshare.net/charper/charperlawdi20130531 (open access) Corey Harper (2011). Library linked data: tuning library metadata for the semantic web. An ALCTS webcast, March 16. 2011. access at http://www.ala.org/alcts/confevents/upcoming/webinar/cat/031611 (open access) Tom Heath and Christian Bizer (2011) Linked Data: Evolving the Web into a Global Data Space (1st edition). Synthesis Lectures on the Semantic Web: Theory and Technology, 1:1, 1-136. Morgan & Claypool. http://linkeddatabook.com/editions/1.0/ (open access) Lukas Koster (2013). “The Poor Person’s Linked Open Data Workbench: Using Discovery Tools for Presenting Integrated Information” in Commonplace.net Nov. 11, 2013 http://commonplace.net/2013/11/thepoor-persons-linked-open-data-workbench/ (open access) Hitchens - LOD & Libraries - Dec. 2013 31
  32. 32. Resources Linked Data: Connect Distributed Data Across the Web http://linkeddata.org/ (open access) (includes the LOD Cloud diagram) LinkedDataTools.com (2009) Introducing Linked Data and the Semantic Web http://www.linkeddatatools.com/semantic-web-basics (open access) OCLC (2013). Linked Data at OCLC http://www.oclc.org/data.en.html (open access) David Rogers (2013) Introducing the BBC’s Linked Data Platform and APIs. Recorded at Qcon London, April 29, 2013. http://www.infoq.com/presentations/bbc-data-platform-api (open access) Richard Wallis (2013). Linked Data Progress with OCLC and Others. At OCLC Linked Data Round Table, IFLA Conference, Aug. 19, 2013, Singapore. http://www.slideshare.net/rjw/linked-data-progress-ifla-2013 (open access) Hitchens - LOD & Libraries - Dec. 2013 32
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