Nees Jan van Eck
@neesjanvaneck.bsky.social
Senior researcher at CWTS, Leiden University; Developer of VOSviewer
Reposted by Nees Jan van Eck
📊 Today, the CWTS Leiden Ranking 2025 has been released. The new Open Edition marks a next step towards more open and more inclusive research analytics for universities. Our new blog post highlights the most significant developments.
👇 Read it now on Leiden Madtrics
👇 Read it now on Leiden Madtrics
The CWTS Leiden Ranking 2025 - More open, more inclusive, more informative
The release of the CWTS Leiden Ranking 2025 marks a next step toward more open and more inclusive research analytics for universities. This post highlights the most significant developments.
www.leidenmadtrics.nl
October 29, 2025 at 12:35 PM
📊 Today, the CWTS Leiden Ranking 2025 has been released. The new Open Edition marks a next step towards more open and more inclusive research analytics for universities. Our new blog post highlights the most significant developments.
👇 Read it now on Leiden Madtrics
👇 Read it now on Leiden Madtrics
Reposted by Nees Jan van Eck
📊 The CWTS Leiden Ranking 2025 is online! 🎉 This time, we have released not one, but two editions: the Traditional Edition and the Open Edition. www.leidenranking.com
CWTS Leiden Ranking
The CWTS Leiden Ranking offers important insights into the scientific performance for major universities worldwide. Select your preferred indicators, generate results, and explore the performance of u...
www.leidenranking.com
October 29, 2025 at 12:37 PM
📊 The CWTS Leiden Ranking 2025 is online! 🎉 This time, we have released not one, but two editions: the Traditional Edition and the Open Edition. www.leidenranking.com
Reposted by Nees Jan van Eck
There is considerable discussion about the (lack of) openness of metadata of journal articles, but how do preprint servers perform in terms of openly available metadata?
@neesjanvaneck.bsky.social and I report our findings in a new @leidenmadtrics.bsky.social blog post doi.org/10.59350/te7....
@neesjanvaneck.bsky.social and I report our findings in a new @leidenmadtrics.bsky.social blog post doi.org/10.59350/te7....
Crossref as a source of open bibliographic metadata for preprints
Crossref is a crucial source of open bibliographic metadata for articles published in scientific journals. Importantly, however, Crossref can also serve as a source of bibliographic metadata for prepr...
doi.org
October 17, 2025 at 7:03 PM
There is considerable discussion about the (lack of) openness of metadata of journal articles, but how do preprint servers perform in terms of openly available metadata?
@neesjanvaneck.bsky.social and I report our findings in a new @leidenmadtrics.bsky.social blog post doi.org/10.59350/te7....
@neesjanvaneck.bsky.social and I report our findings in a new @leidenmadtrics.bsky.social blog post doi.org/10.59350/te7....
Reposted by Nees Jan van Eck
@crossref.bsky.social is a crucial source of open bibliographic metadata for articles published in scientific journals, but how complete is its metadata on preprints?
In our latest blog post, @neesjanvaneck.bsky.social and @ludowaltman.bsky.social investigate
👇 Read it now on Leiden Madtrics
In our latest blog post, @neesjanvaneck.bsky.social and @ludowaltman.bsky.social investigate
👇 Read it now on Leiden Madtrics
Crossref as a source of open bibliographic metadata for preprints
Crossref is a crucial source of open bibliographic metadata for articles published in scientific journals. Importantly, however, Crossref can also serve as a source of bibliographic metadata for prepr...
www.leidenmadtrics.nl
October 16, 2025 at 1:57 PM
@crossref.bsky.social is a crucial source of open bibliographic metadata for articles published in scientific journals, but how complete is its metadata on preprints?
In our latest blog post, @neesjanvaneck.bsky.social and @ludowaltman.bsky.social investigate
👇 Read it now on Leiden Madtrics
In our latest blog post, @neesjanvaneck.bsky.social and @ludowaltman.bsky.social investigate
👇 Read it now on Leiden Madtrics
Reposted by Nees Jan van Eck
🗓️ Register at: datacite.zoom.us/meeting/regi...
October 15, 2025 at 12:58 PM
🗓️ Register at: datacite.zoom.us/meeting/regi...
Reposted by Nees Jan van Eck
Can you help assess how our project advances the COMET model?
We've connected arXiv preprints to published articles with 95%+ precision. Join our community evaluation of this demonstration project.
🗓️ 3 October - Community Project Assessment
Register: datacite.zoom.us/meeting/regi...
We've connected arXiv preprints to published articles with 95%+ precision. Join our community evaluation of this demonstration project.
🗓️ 3 October - Community Project Assessment
Register: datacite.zoom.us/meeting/regi...
Welcome! You are invited to join a meeting: End-of-Project Community Assessment: Match Preprints to Published Journal Articles . After registering, you will receive a confirmation email about joining ...
Thank you for contributing your time to help shape COMET's future direction and strengthen our collective approach to metadata enrichment.
To allow time for meaningful feedback from all participants...
datacite.zoom.us
September 23, 2025 at 7:03 PM
Can you help assess how our project advances the COMET model?
We've connected arXiv preprints to published articles with 95%+ precision. Join our community evaluation of this demonstration project.
🗓️ 3 October - Community Project Assessment
Register: datacite.zoom.us/meeting/regi...
We've connected arXiv preprints to published articles with 95%+ precision. Join our community evaluation of this demonstration project.
🗓️ 3 October - Community Project Assessment
Register: datacite.zoom.us/meeting/regi...
Reposted by Nees Jan van Eck
New on the blog, Organizer @neesjanvaneck.bsky.social Nees Jan van Eck from @cwts.nl explains why CWTS is passionate about enriching #metadata and participating in COMET. A must-read!
👉 www.cometadata.org/blog/cwts
👉 www.cometadata.org/blog/cwts
July 17, 2025 at 3:15 PM
New on the blog, Organizer @neesjanvaneck.bsky.social Nees Jan van Eck from @cwts.nl explains why CWTS is passionate about enriching #metadata and participating in COMET. A must-read!
👉 www.cometadata.org/blog/cwts
👉 www.cometadata.org/blog/cwts
Reposted by Nees Jan van Eck
If you missed COMET's Community Meeting, you can watch the recording on Zenodo: zenodo.org/records/1592...
Organizers Nees Jan van Eck @neesjanvaneck.bsky.social, Adam Buttrick, and Dione Mentis give an update on our progress, introduce the COMET Model, and demonstrate pilot projects.
Organizers Nees Jan van Eck @neesjanvaneck.bsky.social, Adam Buttrick, and Dione Mentis give an update on our progress, introduce the COMET Model, and demonstrate pilot projects.
July 16, 2025 at 10:13 AM
If you missed COMET's Community Meeting, you can watch the recording on Zenodo: zenodo.org/records/1592...
Organizers Nees Jan van Eck @neesjanvaneck.bsky.social, Adam Buttrick, and Dione Mentis give an update on our progress, introduce the COMET Model, and demonstrate pilot projects.
Organizers Nees Jan van Eck @neesjanvaneck.bsky.social, Adam Buttrick, and Dione Mentis give an update on our progress, introduce the COMET Model, and demonstrate pilot projects.
Reposted by Nees Jan van Eck
🔍 Registration is now 𝗢𝗣𝗘𝗡 for the 4th edition of the Scientometrics Using Open Data (𝗼𝗻𝗹𝗶𝗻𝗲) course!
Co-hosted by @cwts.nl & Curtin Open Knowledge Initiative (COKI)
📅 4 Nov – 7 Nov 2025
🕑 14.00 to 18.00 CET
🔗 Learn more and sign up now:
👉🏼 www.universiteitleiden.nl/en/courses/s...
Co-hosted by @cwts.nl & Curtin Open Knowledge Initiative (COKI)
📅 4 Nov – 7 Nov 2025
🕑 14.00 to 18.00 CET
🔗 Learn more and sign up now:
👉🏼 www.universiteitleiden.nl/en/courses/s...
Scientometrics Using Open Data
Open data sources such as Crossref, DataCite, ORCID, OpenAlex, OpenCitations, and many others offer important opportunities to perform scientometric analyses in more transparent, inclusive, and reprod...
www.universiteitleiden.nl
May 15, 2025 at 9:21 AM
🔍 Registration is now 𝗢𝗣𝗘𝗡 for the 4th edition of the Scientometrics Using Open Data (𝗼𝗻𝗹𝗶𝗻𝗲) course!
Co-hosted by @cwts.nl & Curtin Open Knowledge Initiative (COKI)
📅 4 Nov – 7 Nov 2025
🕑 14.00 to 18.00 CET
🔗 Learn more and sign up now:
👉🏼 www.universiteitleiden.nl/en/courses/s...
Co-hosted by @cwts.nl & Curtin Open Knowledge Initiative (COKI)
📅 4 Nov – 7 Nov 2025
🕑 14.00 to 18.00 CET
🔗 Learn more and sign up now:
👉🏼 www.universiteitleiden.nl/en/courses/s...
New update of statistics on availability of open publication metadata in Crossref. Openness of publication metadata keeps increasing, but there have been no major changes compared to last year.
Paper: doi.org/10.31222/osf...
Data: doi.org/10.5281/zeno...
Figures: tinyurl.com/3zk5nvvf
@cwts.nl
Paper: doi.org/10.31222/osf...
Data: doi.org/10.5281/zeno...
Figures: tinyurl.com/3zk5nvvf
@cwts.nl
May 12, 2025 at 7:32 PM
New update of statistics on availability of open publication metadata in Crossref. Openness of publication metadata keeps increasing, but there have been no major changes compared to last year.
Paper: doi.org/10.31222/osf...
Data: doi.org/10.5281/zeno...
Figures: tinyurl.com/3zk5nvvf
@cwts.nl
Paper: doi.org/10.31222/osf...
Data: doi.org/10.5281/zeno...
Figures: tinyurl.com/3zk5nvvf
@cwts.nl