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Najko Jahn

@najko

Data Analyst Scholarly Communications at State and University Library Göttingen , #scholcomm #rstats #bibliometrics #openaccess #openscience #lagotto

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01.10.2023
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Latest posts by Najko Jahn @najko

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Data Visualization A Practical Introduction

Here’s a full draft of the upcoming second edition of my “Data Visualization: A Practical Introduction”: socviz.co

05.03.2026 22:54 👍 539 🔁 172 💬 12 📌 15
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BahnBet — Bet on German Train Delays Predict Deutsche Bahn delays and win. Real-time prediction markets on ICE, IC & EC train delays.

hehehehehe
bahn.bet

04.03.2026 13:36 👍 6 🔁 1 💬 0 📌 0

Jonas Wilinski: The Science Data Lake: A Unified Open Infrastructure Integrating 293 Million Papers Across Eight Scholarly Sources with Embedding-Based Ontology Alignment https://arxiv.org/abs/2603.03126 https://arxiv.org/pdf/2603.03126 https://arxiv.org/html/2603.03126

04.03.2026 06:31 👍 2 🔁 1 💬 0 📌 0
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My paper is out in @bigdatasoc.bsky.social : “Emergency curation as anticipatory maintenance: Lessons from the 2016/2017 #DataRescue movement.” doi.org/10.1177/2053...

25.02.2026 09:44 👍 2 🔁 2 💬 1 📌 0
Open Research Information on BigQuery – ORION-DBs

Newly updated OpenAIRE graph dataset (snapshot date 2026-01-29) now available on Google Big Query as part of ORION collective orion-dbs.community

Thanks @openaire.bsky.social @openairegraph.bsky.social for making the dataset available to share!

25.02.2026 11:33 👍 3 🔁 1 💬 2 📌 1
Promotional graphic for ER&L Fest 2026 featuring the session “Beyond the Black Box: Advancing Openness of Publication Metadata.” The event takes place on Tuesday 3 March, 9:00–9:50 (UTC-6) in Austin, Texas, USA. The design uses a purple background with yellow and white text. A small map of the United States highlights Texas with a location marker and the words “Join us.” The Barcelona Declaration on Open Research Information is listed as the organizing initiative, along with a link to learn more about ER&L Fest.

Promotional graphic for ER&L Fest 2026 featuring the session “Beyond the Black Box: Advancing Openness of Publication Metadata.” The event takes place on Tuesday 3 March, 9:00–9:50 (UTC-6) in Austin, Texas, USA. The design uses a purple background with yellow and white text. A small map of the United States highlights Texas with a location marker and the words “Join us.” The Barcelona Declaration on Open Research Information is listed as the organizing initiative, along with a link to learn more about ER&L Fest.

📍 𝐄𝐑&𝐋 𝐅𝐞𝐬𝐭 𝟐𝟎𝟐𝟔

𝐒𝐭𝐢𝐥𝐥 𝐧𝐞𝐠𝐨𝐭𝐢𝐚𝐭𝐢𝐧𝐠 𝐢𝐧𝐬𝐢𝐝𝐞 𝐚 𝐛𝐥𝐚𝐜𝐤 𝐛𝐨𝐱?

Miranda Bennett and Colleen Campbell (OA2020 / Barcelona Declaration Joint Task Force) discuss how libraries can push for open publication metadata through negotiation and coordinated action.

3 March · 9:00–9:50 AM (UTC-6)
See you there 👋

25.02.2026 11:34 👍 2 🔁 2 💬 0 📌 0
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Small publishers face threat from scale, not open access - Research Information Report finds structural inequities, rather than open access, itself challenge small European academic publishers

Small publishers face threat from scale, not open access - Research Information https://www.researchinformation.info/news/small-publishers-face-threat-from-scale-not-open-access/

23.02.2026 18:54 👍 5 🔁 1 💬 0 📌 0

🌌 Today, ORION was launched, an initiative to bring together Open Research Information (ORI) resources in a cloud-based solution. CWTS is involved with multiple colleagues, including our data science team.

💻 Check out the initiative's website and blog post! 👇

16.02.2026 16:58 👍 6 🔁 4 💬 0 📌 0
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Sharing the load: Building a collective to support open research information online Can we share resources and burdens to make available key open research information resources in actionable and connectable form in the cloud? Through sharing processes and systems, is it possible, ove...

What's better than an open research information resource? Multiple open research information resources that can be combined together!

Happy to participate in ORION, an effort to coordinate making ORI resources available in the cloud, with initial (!) focus on BigQuery

doi.org/10.54900/2pn...

16.02.2026 12:28 👍 7 🔁 2 💬 1 📌 0
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Sharing the load: Building a collective to support open research information online Can we share resources and burdens to make available key open research information resources in actionable and connectable form in the cloud? Through sharing processes and systems, is it possible, ove...

Today we're starting ORION, an effort to coordinate making #openresearchinformation resources available, with an initial focus on Google BigQuery. We are keen to coordinate with all who are interested in supporting a community effort towards availability and reusability!
doi.org/10.54900/2pn...

16.02.2026 12:19 👍 11 🔁 7 💬 1 📌 0
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An AI Agent Published a Hit Piece on Me Summary: An AI agent of unknown ownership autonomously wrote and published a personalized hit piece about me after I rejected its code, attempting to damage my reputation and shame me into acceptin…

AI agent goes nuts on open source maintainer after having its pull request denied. This is a pretty insane story. Open source development as we've been used to for the last few decades is likely over. 1/
theshamblog.com/an-ai-agent-...

13.02.2026 15:23 👍 60 🔁 39 💬 5 📌 10

We need to talk about better metadata in Crossref and DataCite. ROR id, ORCIDs, the lot.

In an age of AI bots that attack our open infrastructure, we also need to discuss whether papering over the gaps with industrial grade website scraping is appropriate or sustainable.

12.02.2026 06:58 👍 9 🔁 4 💬 0 📌 1
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✨ NEW blog post: Being open isn't enough - true "research information citizenship" requires building & maintaining a robust, genuinely #OpenResearch infrastructure, writes our VP of Research Futures, Simon Porter.

💡 Here's what it will take to achieve: https://ow.ly/6U3Y50YcJ3J

11.02.2026 12:01 👍 5 🔁 5 💬 0 📌 2
Leon Draisaitl with Bowie

Leon Draisaitl with Bowie

First shot, first goal!

12.02.2026 20:17 👍 3 🔁 1 💬 0 📌 0
Distill Hiatus After five years, Distill will be taking a break.

"We believed contributions such as interactive articles and visualizations were held back by not being seen as real publications...we no longer believe this...the bottleneck is the amount of effort and the unusual combination of scientific and design expertise required" distill.pub/2021/distill...

10.02.2026 16:26 👍 12 🔁 2 💬 0 📌 0
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Ten simple rules for teaching data science arxiv.org/abs/2602.02874

1: Teach data science by doing data analysis
2: Use participatory live coding
3: Give tons of practice and timely feedback
4: Use tractable or toy data examples
5: Use real and rich, but accessible data sets

05.02.2026 09:24 👍 21 🔁 10 💬 2 📌 1
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Big New Project Release! 📣

I'm very excited to share this long-form highly interactive data (visualization)-driven article on Neglected Tropical Diseases that I worked on for The END Fund. It takes a deep dive into NTDs and the millions of people affected every day

👉 endfund.org/visualizing-...

30.01.2026 11:27 👍 70 🔁 13 💬 4 📌 1
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📣 Our introduction to structural causal models in science studies is now published:
doi.org/10.1162/QSS....

@tklebel.bsky.social and I tried to make our introduction as accessible as possible. We illustrate the theory by three case studies based on a simulated model of Open Science. 🧵(1/6)

27.01.2026 10:24 👍 94 🔁 39 💬 2 📌 5
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Presenting a classifier to improve the identification of research journal publications in OpenAlex - Scientometrics This paper introduces a document type classifier with the purpose to optimise the distinction between research and non-research journal publications in OpenAlex. Based on open metadata, the classifier...

Improving the #OpenAlex document type classification is needed. Meeting abstracts and book reviews are very often grouped under "article", skewing the counts. This new classifier from Nick Haupka is a good contribution toward fixing that problem.

23.01.2026 17:25 👍 4 🔁 2 💬 1 📌 0

Na das wäre was!

15.01.2026 21:46 👍 0 🔁 0 💬 0 📌 0
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Schwimmbad Malik, Nuuk - KHR Architektur Das wunderschön geschwungene Schwimmbad dient als neuer kultureller und sozialer Treffpunkt in Nuuk und wurde 2005 mit der olympischen Goldmedaille im Sportbau ausgezeichnet. Das Internationale Olympi...

Und ein preisgekröntes Schwimmbad: khr.dk/de/projekte/...

15.01.2026 19:11 👍 1 🔁 0 💬 1 📌 0
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KI in Bibliotheken weiterdenken Die nächste Fachtagung des „Netzwerks maschinelle Verfahren in der Erschließung“ findet am 29. und 30. Januar 2026 in der Deutschen Nationalbibliothek statt. Im Fokus stehen aktuelle Entwicklungen der...

Jetzt noch anmelden für die Tagung "KI in Bibliotheken weiterdenken". Am 29. und 30. Januar 2026 kommen bei uns in Frankfurt Fachleute aus Bibliotheken, Archiven und Gedächtnisinstitutionen zusammen: www.dnb.de/DE/Kulturell...

05.01.2026 09:18 👍 1 🔁 1 💬 0 📌 0
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Decreasing affiliation metadata coverage in OpenAlex – Scholarly Communication Analytics This blog post examines the decrease in affiliation metadata coverage in OpenAlex. An analysis of over 13 million articles published by major commercial publishers between 2018 and 2025 suggests that ...

There seems to be a decrease in the coverage of affiliation metadata in #OpenAlex, particularly with regard to journal articles published by Elsevier since 2024. Only around 6% of Elsevier articles published in 2025 have affiliation metadata.

subugoe.github.io/scholcomm_an...

16.12.2025 08:39 👍 19 🔁 15 💬 0 📌 2
screenshot of my post

screenshot of my post

Big new blogpost!

My guide to data visualization, which includes a very long table of contents, tons of charts, and more.

--> Why data visualization matters and how to make charts more effective, clear, transparent, and sometimes, beautiful.
www.scientificdiscovery.dev/p/salonis-gu...

09.12.2025 20:28 👍 799 🔁 316 💬 22 📌 50

Great, congratulations.🎉

09.12.2025 15:52 👍 1 🔁 0 💬 0 📌 0
Screenshot https://oa-datenpraxis.de/OpenAlex.html

Screenshot https://oa-datenpraxis.de/OpenAlex.html

Neue Lernmaterialien aus dem Projekt "OA Datenpraxis"

Interaktive R-Notebooks und ein Guide zu #OpenAccess Monitoring und Open Research Information, jetzt online:

👉 doi.org/10.59350/z46...

#OpenScience #DataLiteracy

CC: @ibi-hu.bsky.social, @helmholtzosoffice.bsky.social, @najko.bsky.social

05.12.2025 07:32 👍 11 🔁 6 💬 0 📌 0

Johannes Schneider, Heinz Pampel: Mapping the Landscape of Open Access Dashboards - A Dataset for Research and Infrastructure Development https://arxiv.org/abs/2512.01669 https://arxiv.org/pdf/2512.01669 https://arxiv.org/html/2512.01669

02.12.2025 06:30 👍 1 🔁 1 💬 0 📌 0

Are peer reviewers influenced by their work being cited? Version of record at
@elife.bsky.social. Thorough and useful peer review - who needs and impact factor?!

Links to paper and code/data ⬇️

📄https://elifesciences.org/reviewed-preprints/108748
💻https://github.com/agbarnett/cited_reviewers

29.11.2025 02:24 👍 9 🔁 8 💬 0 📌 0
Gezeigt wird ein (bibliometrisches) Netzwerk mit vielen Verbindungen zwischen Knoten, einige wenige sind hervorgehoben.

Gezeigt wird ein (bibliometrisches) Netzwerk mit vielen Verbindungen zwischen Knoten, einige wenige sind hervorgehoben.

Interesse an Bibliometrie?

Kennt ihr schon die "Loseblattsammlung" aka. bibliometrische Quick Notes von unserm Kollegen @optykali.bsky.social?
Ein Blick lohnt sich.
Ihr findet das CC BY 4.0 lizenzierte Material hier:
bibliometrics-quick-notes.github.io

#bibliometrie #bibliometry #quicknotes #LIS

14.11.2025 12:41 👍 5 🔁 3 💬 0 📌 0
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The Matilda Effect in Soviet scientometrics? Nalimov, Mulchenko, and the origins of Naukometriya Abstract. This article revisits the early history of Soviet scientometrics, examining the role of Zinaida Mulchenko in writing Naukometriya – the foundational book in this field. While Vasily V. Nalim...

This article revisits the early history of Soviet scientometrics, examining the role of Zinaida Mulchenko in writing Naukometriya... Mulchenko’s diminished positionality as the co-author of the book can be understood through the lens of the Matilda Effect direct.mit.edu/qss/article/...

14.11.2025 08:42 👍 4 🔁 2 💬 1 📌 0