Ludo Waltman
@ludowaltman.bsky.social
Scientific Director Centre for Science and Technology Studies (CWTS), Leiden University; Open Science Ambassador Leiden University; Co-chair Research on Research Institute (RoRI); President ASAPbio; Editor-in-Chief MetaROR (MetaResearch Open Review)
Reposted by Ludo Waltman
I basically think this is the edge of a pretty bad storm of copyright conservatism and a reopening of the license wars (which may make no difference due to transformative use). However, if you put up a paywall to acquire, AI companies have to acquire legally in current court rulings. Problematic.
💥New: Creative commons licenses and copyright may not stop academic work being used to train AI
✍️ @eve.gd
#CreativeCommons #ScholComm #AcWri
✍️ @eve.gd
#CreativeCommons #ScholComm #AcWri
Creative commons licenses and copyright may not stop academic work being used to train AI - Impact of Social Sciences
Considering the legal standing of creative commons licenses & copyright, Martin Eve suggests legal protections for academic work are unlikely to be forthcoming.
blogs.lse.ac.uk
November 24, 2025 at 4:55 PM
I basically think this is the edge of a pretty bad storm of copyright conservatism and a reopening of the license wars (which may make no difference due to transformative use). However, if you put up a paywall to acquire, AI companies have to acquire legally in current court rulings. Problematic.
Reposted by Ludo Waltman
In light of record submission rates and a large volume of AI-generated slop, SocArXiv recently implemented a policy requiring ORCIDs linked in the OSF profile of submitting authors, and narrowing our focus to social science subjects. Today we are taking two more steps:
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November 27, 2025 at 2:54 PM
In light of record submission rates and a large volume of AI-generated slop, SocArXiv recently implemented a policy requiring ORCIDs linked in the OSF profile of submitting authors, and narrowing our focus to social science subjects. Today we are taking two more steps:
/1
/1
Reposted by Ludo Waltman
Nature Sci Rep publishes incoherent AI slop. eLife publishes a paper which the reviewers didn't agree with, making all the comments and responses public with thoughtful commentary. One of these journals got delisted by Web of Science for quality concerns from not doing peer review. Guess which one?
November 27, 2025 at 1:35 PM
Nature Sci Rep publishes incoherent AI slop. eLife publishes a paper which the reviewers didn't agree with, making all the comments and responses public with thoughtful commentary. One of these journals got delisted by Web of Science for quality concerns from not doing peer review. Guess which one?
Very much looking forward to this event next week in Cambridge. There are so many interesting developments in the publish-review-curate landscape!
Our public forum at University of Cambridge is officially *sold out* Looking forward to interesting discussions around the future of publishing with @ludowaltman.bsky.social and others @peercommunityin.bsky.social @elife.bsky.social @metaror.bsky.social - coar-repositories.org/news-updates...
Publish, Review, Curate: Turning scholarly publishing on its head
Tired of long delays, expensive fees, and a lack of transparency about editorial decisions when publishing your articles? Join us at King’s College, Cambridge on December 3rd for an in-depth …
coar-repositories.org
November 27, 2025 at 12:31 PM
Very much looking forward to this event next week in Cambridge. There are so many interesting developments in the publish-review-curate landscape!
Reposted by Ludo Waltman
Despite this, Diana Hicks told us, “it certainly feels like mandating metrics gaming and so would encourage a culture not focused on integrity.”
Exclusive: ‘Highly problematic’ policy has Saudi university pressuring faculty to cite its research
Prince Sultan University At Prince Sultan University in Saudi Arabia, faculty members must help raise their school’s academic standing not by doing impactful work, but by citing the institution’s r…
retractionwatch.com
November 24, 2025 at 7:14 PM
Despite this, Diana Hicks told us, “it certainly feels like mandating metrics gaming and so would encourage a culture not focused on integrity.”
Reposted by Ludo Waltman
Huge congratulations to @sarahderijcke.nl on her appointment as Rector Magnificus @unileiden.bsky.social! Sarah is a brilliant scholar, a visionary & compassionate leader. I’m excited to see her channel her experience, wisdom & insight into this vital role www.universiteitleiden.nl/en/news/2025...
Sarah de Rijcke appointed Rector Magnificus of Leiden University
Professor Sarah de Rijcke will become the new Rector Magnificus on the Executive Board of Leiden University on 15 January 2026. She will succeed Professor Hester Bijl, who will become Rector Magnificu...
www.universiteitleiden.nl
November 24, 2025 at 5:07 PM
Huge congratulations to @sarahderijcke.nl on her appointment as Rector Magnificus @unileiden.bsky.social! Sarah is a brilliant scholar, a visionary & compassionate leader. I’m excited to see her channel her experience, wisdom & insight into this vital role www.universiteitleiden.nl/en/news/2025...
Reposted by Ludo Waltman
🎓 We are delighted to announce that our colleague @sarahderijcke.nl, Professor of Science, Technology & Innovation Studies at CWTS, has been appointed as Rector Magnificus of Leiden University.
We wish Sarah all the best in her new role at our university!
www.universiteitleiden.nl/en/news/2025...
We wish Sarah all the best in her new role at our university!
www.universiteitleiden.nl/en/news/2025...
Sarah de Rijcke appointed Rector Magnificus of Leiden University
Professor Sarah de Rijcke will become the new Rector Magnificus on the Executive Board of Leiden University on 15 January 2026. She will succeed Professor Hester Bijl, who will become Rector Magnificu...
www.universiteitleiden.nl
November 24, 2025 at 2:41 PM
🎓 We are delighted to announce that our colleague @sarahderijcke.nl, Professor of Science, Technology & Innovation Studies at CWTS, has been appointed as Rector Magnificus of Leiden University.
We wish Sarah all the best in her new role at our university!
www.universiteitleiden.nl/en/news/2025...
We wish Sarah all the best in her new role at our university!
www.universiteitleiden.nl/en/news/2025...
Reposted by Ludo Waltman
Congrats Ludo! Can't believe it's been a year already. Here's to many more to come!
November 24, 2025 at 12:50 PM
Congrats Ludo! Can't believe it's been a year already. Here's to many more to come!
Reposted by Ludo Waltman
One year ago we launched the MetaROR (MetaResearch Open Review) publish-review-curate platform. This has been one of the most exciting things I've been involved in over the past year.
Very grateful to everyone who has contributed to the development of MetaROR!
Very grateful to everyone who has contributed to the development of MetaROR!
🎈 Time flies! Exactly one year ago today @rorinstitute.bsky.social and @aimosinc.bsky.social launched MetaROR, a platform to publish metaresearch through the publish-review-curate approach.
Over the course of the year, we published 28 articles reviewed by 59 different reviewers.
[1/3]
Over the course of the year, we published 28 articles reviewed by 59 different reviewers.
[1/3]
MetaROR Turns One - MetaROR
An exciting year of open, community-driven evaluation of metaresearch One [...]
metaror.org
November 21, 2025 at 2:10 PM
One year ago we launched the MetaROR (MetaResearch Open Review) publish-review-curate platform. This has been one of the most exciting things I've been involved in over the past year.
Very grateful to everyone who has contributed to the development of MetaROR!
Very grateful to everyone who has contributed to the development of MetaROR!
Reposted by Ludo Waltman
We summarized the Drain paper in an LSE Impact blog post this week. Please share in your networks, ideally with those we are calling to action: research funders and university leadership
blogs.lse.ac.uk/impactofsoci... #AcademicSky #AcademicPublishing #OpenAccess #ScholComm
blogs.lse.ac.uk/impactofsoci... #AcademicSky #AcademicPublishing #OpenAccess #ScholComm
November 20, 2025 at 6:14 PM
We summarized the Drain paper in an LSE Impact blog post this week. Please share in your networks, ideally with those we are calling to action: research funders and university leadership
blogs.lse.ac.uk/impactofsoci... #AcademicSky #AcademicPublishing #OpenAccess #ScholComm
blogs.lse.ac.uk/impactofsoci... #AcademicSky #AcademicPublishing #OpenAccess #ScholComm
Reposted by Ludo Waltman
Money, Time, Trust, Control – How commercial publishers drain science
@danbrockington.bsky.social @aileenfyfe.bsky.social @stefhaustein.scholcommlab.ca for @lseimpactblog.bsky.social
@danbrockington.bsky.social @aileenfyfe.bsky.social @stefhaustein.scholcommlab.ca for @lseimpactblog.bsky.social
Money, Time, Trust, Control – How commercial publishers drain science - Impact of Social Sciences
Have the interests of commercial publishers now become antithetical to the pursuit of knowledge?
blogs.lse.ac.uk
November 21, 2025 at 8:32 AM
Money, Time, Trust, Control – How commercial publishers drain science
@danbrockington.bsky.social @aileenfyfe.bsky.social @stefhaustein.scholcommlab.ca for @lseimpactblog.bsky.social
@danbrockington.bsky.social @aileenfyfe.bsky.social @stefhaustein.scholcommlab.ca for @lseimpactblog.bsky.social
Reposted by Ludo Waltman
Discussion about next steps for MetaROR @metaror.bsky.social A partnership between @aimosinc.bsky.social and @rorinstitute.bsky.social
Led by @alexh.bsky.social and @aidybarnett.bsky.social
#AIMOS2025
Led by @alexh.bsky.social and @aidybarnett.bsky.social
#AIMOS2025
November 20, 2025 at 4:38 AM
Discussion about next steps for MetaROR @metaror.bsky.social A partnership between @aimosinc.bsky.social and @rorinstitute.bsky.social
Led by @alexh.bsky.social and @aidybarnett.bsky.social
#AIMOS2025
Led by @alexh.bsky.social and @aidybarnett.bsky.social
#AIMOS2025
One year ago we launched the MetaROR (MetaResearch Open Review) publish-review-curate platform. This has been one of the most exciting things I've been involved in over the past year.
Very grateful to everyone who has contributed to the development of MetaROR!
Very grateful to everyone who has contributed to the development of MetaROR!
🎈 Time flies! Exactly one year ago today @rorinstitute.bsky.social and @aimosinc.bsky.social launched MetaROR, a platform to publish metaresearch through the publish-review-curate approach.
Over the course of the year, we published 28 articles reviewed by 59 different reviewers.
[1/3]
Over the course of the year, we published 28 articles reviewed by 59 different reviewers.
[1/3]
MetaROR Turns One - MetaROR
An exciting year of open, community-driven evaluation of metaresearch One [...]
metaror.org
November 21, 2025 at 2:10 PM
One year ago we launched the MetaROR (MetaResearch Open Review) publish-review-curate platform. This has been one of the most exciting things I've been involved in over the past year.
Very grateful to everyone who has contributed to the development of MetaROR!
Very grateful to everyone who has contributed to the development of MetaROR!
Reposted by Ludo Waltman
🚀 Munin Conference 2025 is LIVE at UiT! 🌟 Exciting discussions on making scholarly metadata openly available underway. Join the conversation! 📝📊 #Munin2025 #OpenScience #ScholarlyPublishing #Tromsø #Norway
November 18, 2025 at 9:10 AM
🚀 Munin Conference 2025 is LIVE at UiT! 🌟 Exciting discussions on making scholarly metadata openly available underway. Join the conversation! 📝📊 #Munin2025 #OpenScience #ScholarlyPublishing #Tromsø #Norway
Reposted by Ludo Waltman
Our new preprint! The Acknowledgments problem, and what to do about it.
With @martonkovacs.bsky.social, @pietropollo.bsky.social, @philobolobstime.bsky.social, Losia Lagisz, & Mohammad Hosseini.
With @martonkovacs.bsky.social, @pietropollo.bsky.social, @philobolobstime.bsky.social, Losia Lagisz, & Mohammad Hosseini.
November 17, 2025 at 10:19 PM
Our new preprint! The Acknowledgments problem, and what to do about it.
With @martonkovacs.bsky.social, @pietropollo.bsky.social, @philobolobstime.bsky.social, Losia Lagisz, & Mohammad Hosseini.
With @martonkovacs.bsky.social, @pietropollo.bsky.social, @philobolobstime.bsky.social, Losia Lagisz, & Mohammad Hosseini.
I just reviewed the article 'PreprintToPaper dataset: connecting bioRxiv preprints with journal publications' by Badalova, Sienkiewicz and Mayr.
Article: arxiv.org/abs/2510.017...
Review: prereview.org/reviews/1762...
@biorxiv-medrxiv.bsky.social
@prereview.bsky.social
#PublishYourReviews
Article: arxiv.org/abs/2510.017...
Review: prereview.org/reviews/1762...
@biorxiv-medrxiv.bsky.social
@prereview.bsky.social
#PublishYourReviews
November 17, 2025 at 5:43 AM
I just reviewed the article 'PreprintToPaper dataset: connecting bioRxiv preprints with journal publications' by Badalova, Sienkiewicz and Mayr.
Article: arxiv.org/abs/2510.017...
Review: prereview.org/reviews/1762...
@biorxiv-medrxiv.bsky.social
@prereview.bsky.social
#PublishYourReviews
Article: arxiv.org/abs/2510.017...
Review: prereview.org/reviews/1762...
@biorxiv-medrxiv.bsky.social
@prereview.bsky.social
#PublishYourReviews
Reposted by Ludo Waltman
TU/e has gained a new research centre: META/e. Daniël Lakens and Krist Vaesen were among the founders of this knowledge hub for metascience—research aimed at improving the practice of science itself. “We want to be a home for every researcher who occasionally wonders: what are we even doing?”
Knowledge centre META/e: home for those improving science
TU/e has gained a new research centre: META/e. Daniël Lakens and Krist Vaesen were among the founders of this knowledge hub for metascience—research aimed at improving the practice of science itself. ...
www.cursor.tue.nl
November 13, 2025 at 2:50 PM
TU/e has gained a new research centre: META/e. Daniël Lakens and Krist Vaesen were among the founders of this knowledge hub for metascience—research aimed at improving the practice of science itself. “We want to be a home for every researcher who occasionally wonders: what are we even doing?”
Reposted by Ludo Waltman
Great to see that cOAlition S is going to enhance its "focus on sustainable and equitable models, such as PRC, diamond open access and preprints".
This aligns with some of the work we are doing at @cwts.nl and in @rorinstitute.bsky.social.
This aligns with some of the work we are doing at @cwts.nl and in @rorinstitute.bsky.social.
1/ cOAlition S announces its 2026–2030 strategy, guided by a refreshed, shared vision: a scholarly communication system that enables rapid, open, transparent & equitable sharing of trustworthy scientific knowledge.
www.coalition-s.org/coalition-s-...
#OpenScience #ScholarlyComm #Plan_S #OpenAccess
www.coalition-s.org/coalition-s-...
#OpenScience #ScholarlyComm #Plan_S #OpenAccess
November 12, 2025 at 6:33 PM
Great to see that cOAlition S is going to enhance its "focus on sustainable and equitable models, such as PRC, diamond open access and preprints".
This aligns with some of the work we are doing at @cwts.nl and in @rorinstitute.bsky.social.
This aligns with some of the work we are doing at @cwts.nl and in @rorinstitute.bsky.social.
Great to see that cOAlition S is going to enhance its "focus on sustainable and equitable models, such as PRC, diamond open access and preprints".
This aligns with some of the work we are doing at @cwts.nl and in @rorinstitute.bsky.social.
This aligns with some of the work we are doing at @cwts.nl and in @rorinstitute.bsky.social.
1/ cOAlition S announces its 2026–2030 strategy, guided by a refreshed, shared vision: a scholarly communication system that enables rapid, open, transparent & equitable sharing of trustworthy scientific knowledge.
www.coalition-s.org/coalition-s-...
#OpenScience #ScholarlyComm #Plan_S #OpenAccess
www.coalition-s.org/coalition-s-...
#OpenScience #ScholarlyComm #Plan_S #OpenAccess
November 12, 2025 at 6:33 PM
Great to see that cOAlition S is going to enhance its "focus on sustainable and equitable models, such as PRC, diamond open access and preprints".
This aligns with some of the work we are doing at @cwts.nl and in @rorinstitute.bsky.social.
This aligns with some of the work we are doing at @cwts.nl and in @rorinstitute.bsky.social.
Reposted by Ludo Waltman
Join RoRI Co-Chair @ludowaltman.bsky.social in Cambridge on 3 Dec, where he'll be a keynote at a forum exploring the Publish, Review, Curate model.
The event will showcase initiatives and discuss how this model can shape the future of scholarly communication: coar-repositories.org/news-updates...
The event will showcase initiatives and discuss how this model can shape the future of scholarly communication: coar-repositories.org/news-updates...
November 12, 2025 at 12:44 PM
Join RoRI Co-Chair @ludowaltman.bsky.social in Cambridge on 3 Dec, where he'll be a keynote at a forum exploring the Publish, Review, Curate model.
The event will showcase initiatives and discuss how this model can shape the future of scholarly communication: coar-repositories.org/news-updates...
The event will showcase initiatives and discuss how this model can shape the future of scholarly communication: coar-repositories.org/news-updates...
Very proud of @eleonoradagiene.bsky.social. It was a great pleasure to supervise her PhD research!
🎓 Last week, Dr. Eleonora Dagiene successfully defended her PhD thesis titled 'Quantitative research assessment and its unintended consequences' at Leiden University.
Congratulations on this amazing achievement!! 🥂
www.universiteitleiden.nl/en/news/2025...
Congratulations on this amazing achievement!! 🥂
www.universiteitleiden.nl/en/news/2025...
Congratulations, Dr. Eleonora Dagienė!
On 30 October 2025, Eleonora Dagienė successfully defended her PhD thesis at Leiden University, titled ‘Quantitative Research Assessment and its Unintended Consequences’.
www.universiteitleiden.nl
November 7, 2025 at 11:08 AM
Very proud of @eleonoradagiene.bsky.social. It was a great pleasure to supervise her PhD research!
Reposted by Ludo Waltman
Nederland koploper met 95% OA, maar vernieuwing strategie is nodig www.universiteitenvannederland.nl/actueel/nieu...
"Universiteiten willen meer grip krijgen op hoe wetenschappelijk onderzoek wordt gepubliceerd en hoe we de autonomie van wetenschappers op ... publicatieprocessen kunnen verhogen."
"Universiteiten willen meer grip krijgen op hoe wetenschappelijk onderzoek wordt gepubliceerd en hoe we de autonomie van wetenschappers op ... publicatieprocessen kunnen verhogen."
Nederland koploper met 95 procent Open Access, maar vernieuwing strategie is nodig
Sinds 2016 is het percentage open toegankelijke peer-reviewed artikelen gestegen van 42 procent open access naar 95 procent in 2024. Daarmee is Nederland een koploper in de wereld. Caspar van den Berg...
www.universiteitenvannederland.nl
November 6, 2025 at 8:30 PM
Nederland koploper met 95% OA, maar vernieuwing strategie is nodig www.universiteitenvannederland.nl/actueel/nieu...
"Universiteiten willen meer grip krijgen op hoe wetenschappelijk onderzoek wordt gepubliceerd en hoe we de autonomie van wetenschappers op ... publicatieprocessen kunnen verhogen."
"Universiteiten willen meer grip krijgen op hoe wetenschappelijk onderzoek wordt gepubliceerd en hoe we de autonomie van wetenschappers op ... publicatieprocessen kunnen verhogen."
Reposted by Ludo Waltman
Excited to launch an openRxiv partnership with the scientist-run AI review service qed (@qedscience.bsky.social), the brainchild of @odedrechavi.bsky.social 1/n
openrxiv.org/enabling-rev...
openrxiv.org/enabling-rev...
Enabling options for review: from training and transparency to author-centered AI tools - openRxiv
Peer review is widely viewed as a critical aspect of biomedical communication. Ideally, it provides authors with feedback so they can improve manuscripts and gives readers, particularly nonspecialists...
openrxiv.org
November 6, 2025 at 2:32 PM
Excited to launch an openRxiv partnership with the scientist-run AI review service qed (@qedscience.bsky.social), the brainchild of @odedrechavi.bsky.social 1/n
openrxiv.org/enabling-rev...
openrxiv.org/enabling-rev...
Nederland koploper met 95% OA, maar vernieuwing strategie is nodig www.universiteitenvannederland.nl/actueel/nieu...
"Universiteiten willen meer grip krijgen op hoe wetenschappelijk onderzoek wordt gepubliceerd en hoe we de autonomie van wetenschappers op ... publicatieprocessen kunnen verhogen."
"Universiteiten willen meer grip krijgen op hoe wetenschappelijk onderzoek wordt gepubliceerd en hoe we de autonomie van wetenschappers op ... publicatieprocessen kunnen verhogen."
Nederland koploper met 95 procent Open Access, maar vernieuwing strategie is nodig
Sinds 2016 is het percentage open toegankelijke peer-reviewed artikelen gestegen van 42 procent open access naar 95 procent in 2024. Daarmee is Nederland een koploper in de wereld. Caspar van den Berg...
www.universiteitenvannederland.nl
November 6, 2025 at 8:30 PM
Nederland koploper met 95% OA, maar vernieuwing strategie is nodig www.universiteitenvannederland.nl/actueel/nieu...
"Universiteiten willen meer grip krijgen op hoe wetenschappelijk onderzoek wordt gepubliceerd en hoe we de autonomie van wetenschappers op ... publicatieprocessen kunnen verhogen."
"Universiteiten willen meer grip krijgen op hoe wetenschappelijk onderzoek wordt gepubliceerd en hoe we de autonomie van wetenschappers op ... publicatieprocessen kunnen verhogen."
Reposted by Ludo Waltman
Congratulations to us, and thank you, @kohli-sociology.bsky.social!
November 5, 2025 at 3:33 PM
Congratulations to us, and thank you, @kohli-sociology.bsky.social!