Enhancing a library OPAC with linked data

Enhancing an OPAC using linked data in MARC records

ELUNA 2016 Oklahoma City

ExLibris Users of North America

Oklahoma City, OK

May 2016

Presented by

Michael Cummings

Library Systems Coordinator

GWU Libraries

HTML markup in web pages

The semantic web

Google Trends

Trend: ‘linked data’ vs ‘semantic web’

Schema.org

Theory

https://searchenginewatch.com/2016/02/25/say-goodbye-to-google-14-alternative-search-engines/

HTML markup in web pages

In practice: an example

findit.library.gwu.edu/isbn/9780716703389

Schema.org microdata markup

Markup, generated on-the-fly

Google search

Catalog record in Google search result

Custom Google Search form

Custom Google search form and results

reports.library.gwu.edu/customsearch.html

new horizons in astronomy

Creating the custom search

Experiment: Build a Google search form

https://cse.google.com

Custom search coding

??????????????

Embedding the custom search form

view-source:reports.library.gwu.edu/customsearch.html

2. Hyperlinks on MARC data

Voyager-l informal survey

Informal survey of Voyager-l

Voyager-l informal survey

Informal survey of Voyager-l

About our web applicaton

Beyond semantic markup

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

OCLC Identity example

Overview, Timeline, Alternate names …

1 of 4

www.worldcat.org/wcidentities/lccn-n50012763

OCLC Identity example

Works by or about the author …

2 of 4

OCLC Identity example

Audience, Related Identities, Links …

3 of 4

OCLC Identity example

… and Associated Subjects word cloud.

4 of 4

Identities links in the web application

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”

Converting links

STEP #2 convert name to ID link

See: https://github.com/gwu-libraries

Publishing links in our API

#3 Output link text and associated URI

See: http://findit.library.gwu.edu/api/

Adding links with MarcEdit

Catalog record before editing

Original local Voyager catalog record

Adding links with MarcEdit

New in MarcEdit: MarcNext

See: http://marcedit.reeset.net/

MarcEdit build linked records

MarcNext: Link Identifiers: Build links

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

OCLC Workid

Example: URI for OCLC’s Work ID

$n OCLC Work Id

$o http://worldcat.org/entity/work/id/62586849

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

Two experiments with linked data

Experiment: Display the links

#1 Links displayed with labels . . .

Experiment: Display the links

Cancelled before going into live site.

Experiment: Display the links

#2 Use case: get alternate names

1 of 3

Experiment: Display the links

and use labels from the model . . .

2 of 3

Experiment: Display the links

. . . however, how fast can we process it?

3 of 3

Ex Libris and linked data

ExLibris support for linked data

Ex Libris prototype

going in the wrong direction.

Bibframe / data model

Bibframe: Library of Congress

A model for expressing & connecting

bibliographic data

www.loc.gov/bibframe/

Zepheira, NLM, UC-Davis, GW

Testing bibframe with library data

bibfra.me/about/

RDF

Bibframe version of MARC record

bibframe.org/tools/compare/bibid/17930908

OCLC

Turtle | N-Triple | JSON-LD | RDF/XML

Available formats / APIs include RDF

Future Bibframe / RDF developments

Going forward: obstacles

Experimentation and evaluation

https://ecommons.cornell.edu/handle/1813/42435

Going forward: modelling

Creating linked data repositories

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)

Learn More

Michael Cummings

Library Systems Coordinator

202-994-4806 michaelc@gwu.edu

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

Photo credits

Michael Cummings

Library Systems Coordinator

202-994-4806 michaelc@gwu.edu

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