Najko Jahn from Göttingen State and University Library presents on the benefits of using Crossref metadata for libraries and scientists. Presented at Crossref LIVE Hannover, June 27th 2018.

1. The benefits of using
Crossref metadata for
libraries and scientists
Najko Jahn (State and University Library Göttingen)
najko.jahn@sub.uni-goettingen.de
@najkoja

2. About me
Hi, I am Najko and work as a Data Analyst at the SUB Göttingen
My Role:
 Design and implement new services for analysing scholarly
communication to support researchers, and to inform decision-making
 Particular focus on open data and open tools to access, discover and
analyse metadata about scholarly works

3. How I work
Figure from H. Wickham & G. Grolemund, 2017. R for Data Science. Boston.

4. How I work and where Crossref helps!
Figure from H. Wickham & G. Grolemund, 2017. R for Data Science. Boston.

5. Import using Crossref REST API
 Free to use!
 API is well-documented and metadata frequently updated
 Comprehensive query and filter option
 Facet counts
 Great performance when using the polite pool (sharing email with Crossref)
 Great tools to facilitate access to the API provided by Scott Chamberlain
(@sckottie)

6. Example: Accessing Crossref with R

7. Tidy metadata
DOIs allows interlinking with other webservices and databases
Comprehensive metadata
 publisher and journal name disambiguation
 License infos and full-text availability
 IDs (ISSN, ORCID, Funder DOIs)
Content Negotiation
 export to reference managers (BibTeX, citeproc-json)
 formatted reference list
Matching free-text references to DOIs

8. Example: Match references to DOIs

9. Communication
Permissive re-use conditions are key for effective dissemination!
Crossref asserts no claims of ownership to individual items of
bibliographic metadata and associated Digital Object Identifiers
(DOIs)
Allows to openly share datasets along with the analysis, or even to
build analytical applications using Crossref metadata

10. Hybrid OA Journal Dashboard
Case Study using Crossref metadata

11. Challenge: Studying Hybrid OA uptake
Many publisher offer hybrid
open access models
However, determining the
number and proportion of OA
articles provided immediately
in open access by
subscription-based journals is
hard!

12. Data-driven definition hybrid open access
Academic institutions sponsored open access publication
according to the Open APC initiative
Publishers shared licensing information about fulltext
accessibility and re-use rights with Crossref

15. Hybrid OA Dashboard
https://najkoja.shinyapps.io/hybridoa

16. Outlook

17. Summary: Benefits using Crossref
Crossref services helps to obtain, tidy and communicate
metadata about scholarly work!
 Open API
 Open Tools to work with Crossref metadata
 DOIs make it easy to interlink various data sources
 Provides comprehensive metadata serving many use cases
 Permissive re-use of metadata
 Builds a community around open metadata

18. Thank you!
https://najkoja.shinyapps.io/hybridoa
https://github.com/subugoe/hybrid_oa_dashboard
najko.jahn@sub.uni-goettingen.de
@najkoja