Presented online on 20 July 2020 as part of the 2020 LD4 Conference on Linked Data in Libraries.

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Liberté, Egalité et Free Données: The Use of
Linked Data at the ISSN International Centre
Deanna White
Project Officer
ISSN International Centre
@ISSN_IC
2020 LD4 Conference
Online in Paris, 20 July 2020

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Programme
- Some background: Français et encore!
- The ISSN Portal: Vive les données libres!
- The data model: where all being equal
- Our ongoing linked data projects:
• ISNI, DOI, ARK
• Keepers Registry
• Wikidata
Linked Data at the ISSN International Centre – LD4 2020 – Deanna White – Paris, 20 July 2020

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The Continuing Resources Republic
Living UndeterminedDead
Continuing
Resources
Serials Ongoing
Integrating
Resources
Newspapers Updating Loose-
leaf publications
Websites
Databases
Periodicals
Blogs
Monographic Series
Annual Reports
Linked Data at the ISSN International Centre – LD4 2020 – Deanna White – Paris, 20 July 2020
Conference Proceedings
Repositories

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ISSN Guiding the People
- Who uses the ISSN?
• The production chain (publishing,
distribution, subscriptions…)
• Cataloguers for bibliographic description
• The web of linked data
- How is it done?
• Global, unique, opaque, persistent,
• 90 ISO 3297 Registration Agencies & us
• A central register, but decentralized
attribution
• Identification metadata is normalized and
augmented by the ISSN-IC
- Where? In the ISSN Portal
• Maintained by the ISSN International
Centre
• Nearly 2.4 million records
• Data already greatly linked
• Current version launched in January 2018
Linked Data at the ISSN International Centre – LD4 2020 – Deanna White – Paris, 20 July 2020

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Standard ISO 3297: 2020
“Content providers and publishers of serials
and other continuing resources should record
three types of elements within their systems:
— the ISSN, using a dedicated metadata field;
— Cluster ISSNs as appropriate, using a
dedicated metadata field;
— the URI of the ISSN or of cluster ISSNs
linking to the metadata about the continuing
resource or the cluster in the ISSN Portal.”

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Standard ISO 3297: 2020
Examples (XML format)
Schema.org
For a reference to the ISSN:
<http://example.org/Sociologyofreligion>
<http://schema.org/issn> “1759-8818”
<http://example.org/Sociologyofreligion>
<http://schema.org/sameAs>
<http://issn.org/resource/ISSN/1759-8818>
For a reference to the ISSN-L:
<http://example.org/Sociologyofreligion>
<http://schema.org/sameAs>
<http://issn.org/resource/ISSN-L/1069-4404>
Dublin Core
<dc.identifier type=“ISSN”>1799-3911</dc.identifier>
<dc.relation><http: //issn.org/resource/ISSN/1799-
3911></dc.relation>
<dc.identifier type=“ISSN-L”>1799-3903</dc.identifier>
<dc.relation><http: //issn.org/resource/ISSN-L/1799-
3903></dc.relation >
MODS
<identifier type=“issn”>0376-4583</identifier>
<identifier type=“issn-l”>0376-4583</identifier>
<identifier type=”uri”>http://issn.org/resource/ISSN/0376-
4583</identifier>
<identifier type=”uri”>http://issn.org/resource/ISSN-
L/0376-4583</identifier>

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The ISSN Portal https://portal.issn.org

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The Liberté Model
- Open Data
• Objective: be the key identifier for continuing resources on the linked web
• Give basic data:
o ISSN, title, country, medium…
• Associated with a persistent URL (issn.org/resource/ISSN/xxxx-xxxx)
• Licence CC0
- Proprietary Data
• Other bibliographic data (publisher, dates, subject…)
• Data for resources awaiting publication
• Reserved for Portal subscribers
Linked Data at the ISSN International Centre – LD4 2020 – Deanna White – Paris, 20 July 2020

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URI = http://issn.org/resource/ISSN/1923-0915

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With Linked Open Data we are…
- Enriching our data
• From 3rd party LOD creators
- Testing authority control for corporate contributors
- Supplying our data to clean others’ data
• API for our subscribers
- Aligning with other frameworks
• National libraries, Wikidata…
- And any other suggestions for future projects!
Linked Data at the ISSN International Centre – LD4 2020 – Deanna White – Paris, 20 July 2020

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Linked Data at the ISSN International Centre – LD4 2020 – Deanna White – Paris, 20 July 2020
ISNI, demo
http://issn.org/resource/ISSN/2337-2575

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Data Modeling, les égalités
Requirements:
• Coherence with key conceptual
models adopted by libraries, notably
IFLA’s LRM (IFLA-Library Reference
Model)
• Expressiveness (describe all the data
elements of MARC21)
• Simplicity (to encourage reuse of the
data)
Result: An application profile
combining different ontologies
Basic
model
Just in case
Bibliographic
vocabularies
Specific
vocabularies
Linked Data at the ISSN International Centre – LD4 2020 – Deanna White – Paris, 20 July 2020

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Sample
ISSN RDF
Data
Graph
https://www.issn.org/wp-content/uploads/2020/07/ISSN-LinkedDataApplicationProfile-v1_1.pdf

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URI = http://issn.org/resource/ISSN/2398-5437

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Linked Data Record

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ISSN and actionable identifiers: URN, DOI, ARK…
a) Resolving to the serial resource metadata
b) Resolving to the digital resource itself
- Possible for an appropriate resolver to process ISSN URNs and make them
actionable
- The URN: https://urn.issn.org/URN:ISSN:xxxx-xxxx resolves to the ISSN portal,
- Ex. <html> <head> <meta name=“Identifier” scheme=“URN:ISSN” content=“1234-
1231″> </head>…</html>
- Namespace Registration: https://www.iana.org/assignments/urn-formal/issn
- Publishers should use the ISSN in a title-level DOI
- Testing ARKs as part of the ISSN 2024 Strategy
Linked Data at the ISSN International Centre – LD4 2020 – Deanna White – Paris, 20 July 2020

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Keepers, fraternité!
Cooperation with various archiving agencies within the framework of
Keepers Registry (45,326 titles archived as of July 2020)
Ongoing work:
- Create a process to lead the user to the serial title or information
about the title on the publisher’s or aggregator’s platform, or the
archiving agency’s platform, or a catalogue, etc…
- How can ISSN IC manage an actionable identifier that resolves to
several URLs that can be successively queried by the user?
- What ontology/ies to use for the holdings information in our linked
data? The plan is to continue with schema.org but maybe
PRESSoo can be added one day.
Linked Data at the ISSN International Centre – LD4 2020 – Deanna White – Paris, 20 July 2020

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Keepers, how the data looks for now
Linked Data at the ISSN International Centre – LD4 2020 – Deanna White – Paris, 20 July 2020

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Wikidata, fraternité!
- Free ISSN data will be shared with Wikidata under a CC0 license, for WikiProject
Periodicals https://www.wikidata.org/wiki/Wikidata:WikiProject_Periodicals:
• ISSN identifier
• ISSN-L identifier
• Proper (original) title of the serial
• Key (unambiguous) title of the serial
- Ongoing debate about adding more metadata such as date of inception.
- ISSN IC Strategy 2024: Pushing a subset of serial metadata to Wikidata (only
current/not discontinued publications), with 10% having two or more ISSNs (paper and
electronic medium versions)
- As of July 2020, 177,000 ISSN values in Wikidata
Linked Data at the ISSN International Centre – LD4 2020 – Deanna White – Paris, 20 July 2020
• Country of publication
• Distribution format (of a given ISSN)
• URL (for online publications)
• Language of the serial

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Tfrancart, ISSN data model-v5, CC BY-SA 4.0
See the
discussion
here:
https://www.wiki
data.org/wiki/Wi
kidata_talk:Wiki
Project_Periodic
als
Data model by T. Francart

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Wikidata, issnBot at work
Ex. https://www.wikidata.org/wiki/Q1043104
- Only current serials
- Will preserve existing values
- Changes will have an “end time”
qualifier
Linked Data at the ISSN International Centre – LD4 2020 – Deanna White – Paris, 20 July 2020
https://github.com/CIEPS/ISSNBot

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Thank you!
For questions or comments: deanna.white@issn.org
The Application Profile & Wikidata designed by:
Thomas Francart http://www.sparna.fr/
Linked Data at the ISSN International Centre – LD4 2020 – Deanna White – Paris, 20 July 2020