About us!

Welcome to our Blog 👋! Here, you’ll find insights from our work as Data Analysts in the domain of scholarly communication. With this blog, we want to engage with the broader community about how to support data-driven workflows and decision-making around scholarly communication.

We are based at the Göttingen State and University Library, one of the largest academic libraries in Germany. We are using various data analytics tools in our everyday work and contribute to R and Python package developments and training activities. In this blog, you’ll find news and case-studies around:

  • Open Access and Open Science Analytics
  • Packages making use of open databases and helping us in our work
  • Tools for interactive visualizations and dashboard developments
  • Training and outreach activities

We want to thank Maëlle Salmon for encouraging us to start a blog about our work. As a technical framework for the blog, we are using Distill for R Markdown Quarto, a new web publishing format optimized for scientific and technical writing.

Dr. Anne Hobert, Nick Haupka, Sophia Dörner, Najko Jahn

Recent preprints

Haupka, N., Culbert, J., Schniedermann, A., Jahn, N., Mayr, P. (2024). Analysis of the Publication and Document Types in OpenAlex, Web of Science, Scopus, Pubmed and Semantic Scholar. https://arxiv.org/abs/2406.15154

Journal publications

Jahn, N. (2025). Estimating transformative agreement impact on hybrid open access: A comparative large-scale study using Scopus, Web of Science and open metadata. Scientometrics. https://doi.org/10.1007/s11192-025-05390-3

Culbert, J., Hobert, A., Jahn, N., Haupka, N., Schmidt, M., Donner, P., Mayr, P. (2025). Reference Coverage Analysis of OpenAlex compared to Web of Science and Scopus. Scientometrics. https://doi.org/10.1007/s11192-025-05293-3

Jahn, N. (2025). How open are hybrid journals included in transformative agreements? Quantitative Science Studies. https://doi.org/10.1162/qss_a_00348

Haupka, N. (2024). Analyse der Abdeckung wissenschaftlicher Publikationen auf Semantic Scholar im Kontext von Open Access. Bibliothek Forschung und Praxis, 48(2), 362–373. https://doi.org/10.1515/bfp-2023-0057

Taubert, N., Hobert, A., Jahn, N., Bruns, A., & Iravani, E. (2024). Understanding differences of the OA uptake within the German University landscape (2010–2020): Part 2—repository-provided OA. Scientometrics. https://doi.org/10.1007/s11192-024-05003-5

Taubert, N., Hobert, A., Jahn, N., Bruns, A., & Iravani, E. (2023). Understanding differences of the OA uptake within the German university landscape (2010–2020): Part 1—journal-based OA. Scientometrics, 128(6), 3601–3625. https://doi.org/10.1007/s11192-023-04716-3

Fraser, N., Hobert, A., Jahn, N., Mayr, P., & Peters, I. (2023). No deal: German researchers’ publishing and citing behaviors after Big Deal negotiations with Elsevier. Quantitative Science Studies, 4(2), 325–352. https://doi.org/10.1162/qss_a_00255

Haupka, N., Jahn, N., & Hobert, N. (2022). Praxisbericht Big Scholarly Data an der SUB Göttingen. LIBREAS. Library Ideas, 41 (2022). https://libreas.eu/ausgabe41/haupka/

Jahn, N., Matthias, L., & Laakso, M. (2022). Toward transparency of hybrid open access through publisher‐provided metadata: An article‐level study of Elsevier. Journal of the Association for Information Science and Technology, 73(1), 104–118. https://doi.org/10.1002/asi.24549

Jahn, N., Held, M., Walter, H., Haupka, N., & Hillenkötter, K. (2022). HOAD: Data Analytics für mehr Transparenz bei Open-Access-Transformationsverträgen. ABI Technik, 42(1), 64–69. https://doi.org/10.1515/abitech-2022-0007

Stisser, A., Jahn, N., & Schmidt, B. (2022). Stand und Perspektiven bibliometriegestützter Open-Access-Services an Universitäten in Deutschland. Bibliothek Forschung und Praxis, 46(2), 275–283. https://doi.org/10.1515/bfp-2021-0098

Hobert, A., Jahn, N., Mayr, P., Schmidt, B., & Taubert, N. (2021). Open access uptake in Germany 2010–2018: adoption in a diverse research landscape. Scientometrics, 126(12), 9751–9777. https://doi.org/10.1007/s11192-021-04002-0

Laakso, M., Matthias, L., & Jahn, N. (2021). Open is not forever: A study of vanished open access journals. Journal of the Association for Information Science and Technology, 72(9), 1099–1112. https://doi.org/10.1002/asi.24460 (JASIST Best Paper Award 2022. Featured in Nature, Nature, Nature, Science, CNN, DLF)

Jahn, N., Hobert, A., & Haupka, N. (2021). Entwicklung und Typologie des Datendiensts Unpaywall. Bibliothek Forschung und Praxis, 45(2), 293–303. https://doi.org/10.1515/bfp-2020-0115

Matthias, L., Jahn, N., & Laakso, M. (2019). The Two-Way Street of Open Access Journal Publishing: Flip It and Reverse It. Publications, 7(2), 23. https://doi.org/10.3390/publications7020023

Theses

Haupka, N. (2021). Analyse der Entwicklung des Open Access-Discovery-Services Unpaywall seit 2018 [Bachelor Thesis, Hochschule Hannover]. https://doi.org/10.25968/opus-1899

Software

R-Packages (selection):

Jahn, N. europepmc: R Interface to the Europe PubMed Central RESTful Web Service. https://CRAN.R-project.org/package=europepmc | https://docs.ropensci.org/europepmc/

Chamberlain, S., Zhu, H., Jahn, N., Boettiger, C., Ram, K. rcrossref: Client for Various ‘CrossRef’ ‘APIs’. https://CRAN.R-project.org/package=rcrossref https://docs.ropensci.org/rcrossref/

Jahn, N (2022). roadoi: Find Free Versions of Scholarly Publications via Unpaywall. https://CRAN.R-project.org/package=roadoi | https://docs.ropensci.org/roadoi/.

Python-Packages (selection):

Haupka, N., Morrison, P. unpywall - Interfacing the Unpaywall API with Python. https://pypi.org/project/unpywall | https://unpywall.readthedocs.io/

Dashboards (selection):

Hybrid Open Access Dashboard (HOAD). See our blog post: https://www.coalition-s.org/blog/introducing-the-hybrid-open-access-dashboard-hoad/

metacheck: Open Access Metadata Compliance Checker

Open Access uptake in Germany 2010-2018: Interactive Supplement

Third-party funded projects

BMBF

DFG

European Commission