enhancing a library opac with linked data
TRANSCRIPT
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Enhancing an OPAC using linked data in MARC records
ELUNA 2016 Oklahoma City
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ExLibris Users of North America
Oklahoma City, OK
May 2016
Presented by
Michael Cummings
Library Systems Coordinator
GWU Libraries
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HTML markup in web pages
The semantic web
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Google Trends
Trend: ‘linked data’ vs ‘semantic web’
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Schema.org
Theory
https://searchenginewatch.com/2016/02/25/say-goodbye-to-google-14-alternative-search-engines/
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HTML markup in web pages
In practice: an example
findit.library.gwu.edu/isbn/9780716703389
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Schema.org microdata markup
Markup, generated on-the-fly
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Google search
Catalog record in Google search result
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Custom Google Search form
Custom Google search form and results
reports.library.gwu.edu/customsearch.html
new horizons in astronomy
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Creating the custom search
Experiment: Build a Google search form
https://cse.google.com
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Custom search coding
??????????????
Embedding the custom search form
view-source:reports.library.gwu.edu/customsearch.html
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2. Hyperlinks on MARC data
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Voyager-l informal survey
Informal survey of Voyager-l
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Voyager-l informal survey
Informal survey of Voyager-l
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About our web applicaton
Beyond semantic markup
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OCLC linked data: Identities
Brandt, John C.
Publication timeline, list of works, related names and subjects
Use case: add value: WorldCat Identities
findit.library.gwu.edu/oclc/327452
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OCLC Identity example
Overview, Timeline, Alternate names …
1 of 4
www.worldcat.org/wcidentities/lccn-n50012763
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OCLC Identity example
Works by or about the author …
2 of 4
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OCLC Identity example
Audience, Related Identities, Links …
3 of 4
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OCLC Identity example
… and Associated Subjects word cloud.
4 of 4
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Identities links in the web application
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Links on our MARC records
STEP #1 Add URIs to local MARC records
findit.library.gwu.edu/item/2659054.json
“0”: http://id.loc.gov/authorities/names/n82076128”
“o”: http://worldcat.org/entity/work/id/1419206”
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Converting links
STEP #2 convert name to ID link
See: https://github.com/gwu-libraries
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Publishing links in our API
#3 Output link text and associated URI
See: http://findit.library.gwu.edu/api/
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Adding links with MarcEdit
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Catalog record before editing
Original local Voyager catalog record
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Adding links with MarcEdit
New in MarcEdit: MarcNext
See: http://marcedit.reeset.net/
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MarcEdit build linked records
MarcNext: Link Identifiers: Build links
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Links generated by MarcEdit
Revised local Voyager Marc record
$a Levin, Murray Burton.
$0 http://id.loc.gov/authorities/names/n80034895
$0 http://viaf.org/viaf/170682523
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OCLC Workid
Example: URI for OCLC’s Work ID
$n OCLC Work Id
$o http://worldcat.org/entity/work/id/62586849
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URIs on MARC tags in Voyager
Count of URIs on GW’s local Marc records
https://github.com/gwu-libraries/notebooks/blob/master/20151026-marc-subjects-spark/subject-patterns-with-spark.ipynb
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Two experiments with linked data
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Experiment: Display the links
#1 Links displayed with labels . . .
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Experiment: Display the links
Cancelled before going into live site.
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Experiment: Display the links
#2 Use case: get alternate names
1 of 3
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Experiment: Display the links
and use labels from the model . . .
2 of 3
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Experiment: Display the links
. . . however, how fast can we process it?
3 of 3
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Ex Libris and linked data
ExLibris support for linked data
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Ex Libris prototype
going in the wrong direction.
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Bibframe / data model
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Bibframe: Library of Congress
A model for expressing & connecting
bibliographic data
www.loc.gov/bibframe/
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Zepheira, NLM, UC-Davis, GW
Testing bibframe with library data
bibfra.me/about/
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RDF
Bibframe version of MARC record
bibframe.org/tools/compare/bibid/17930908
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OCLC
Turtle | N-Triple | JSON-LD | RDF/XML
Available formats / APIs include RDF
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Future Bibframe / RDF developments
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Going forward: obstacles
Experimentation and evaluation
https://ecommons.cornell.edu/handle/1813/42435
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Going forward: modelling
Creating linked data repositories
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Going forward: programming
Open source tools to try out. pybibframe
https://github.com/zepheira/pybibframe
Converting MARC/XML to RDF or Versa output (command line)
or
Converting MARC/XML to RDF or Versa output (API)
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Learn More
Michael Cummings
Library Systems Coordinator
202-994-4806 [email protected]
Miller, E., & Ogbuji, U. (2015). Linked data design for the visible library. Bulletin of the American Society for Information Science and Technology (Online), 41(4), 23-29. Retrieved from http://proxygw.wrlc.org/login?url=http://search.proquest.com/docview/1679220450? accountid=11243
Mitchell, E. T., PhD. (2016). The current state of linked data in libraries, archives, and museums. Library Technology Reports, 52(1), 5-16,2. Retrieved from http://proxygw.wrlc.org/login?url=http://search.proquest.com/docview/1752517266?accountid=11243
Shieh, J. (2013, Winter). A transformative opportunity: BIBFRAME at the George Washington University,
an early experimenter. Information Standards Quarterly,25, 17-21. Retrieved from
http://proxygw.wrlc.org/login?url=http://search.proquest.com/docview/1545644349?accountid=11243
The Relationship between BIBFRAME and OCLC’s Linked-Data Model of Bibliographic Description: A
Working Paper http://www.oclc.org/content/dam/research/publications/library/2013/2013-05.pdf
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Photo credits
Michael Cummings
Library Systems Coordinator
202-994-4806 [email protected]
Slide 1: Buffalo sketch
https://www.pinterest.com/pin/390194755188382990/
Juan Bosco / San Martin Arts Crafts
Slide 4: Oklahoma state bird: Scissor-tailed flycatcher in flight
http://www.birdsasart-blog.com/2012/07/13/you-be-the-judge-flight/
Slide 13: Lone buffalo in tall grass
https://upload.wikimedia.org/wikipedia/commons/thumb
/e/e7/Buffalo_American_animal.jpg/1024px-Buffalo_American_animal.jpg
Slide 22: Scenic turnout, near Arbuckle Mountains.
http://www.travelok.com/scenic_drives
Bill Bryant
Slide 26: Indian Paintbrush wildflowers near Boynton.
http://www.travelok.com/scenic_drives
Slide 33: Oklahoma's state wildflower, the Indian Blanket, near Davis.
http://www.travelok.com/scenic_drives
Carolyn Fletcher
Slide 41: Group of bison on grassy plain
http://www.nature.org/cs/groups/webcontent/@web/@oklahoma/
documents/media/tallgrass-prairie-bison-2.jpg
Slide 46: Two bison in snow
Brett French, Billings Gazette
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