Vincent Traag
@vtraag.bsky.social
Senior researcher at CWTS, Leiden University. Computational social science, science studies, modelling & networks.
Reposted by Vincent Traag
How can we reform science? I have some ideas. But I am not sure you’ll like them, because they don’t promise much. elevanth.org/blog/2025/07...
Which Kind of Science Reform
What hope is there for science reform, if we can't agree on what to reform? Right now, principles are more important than practices.
elevanth.org
July 9, 2025 at 1:40 PM
How can we reform science? I have some ideas. But I am not sure you’ll like them, because they don’t promise much. elevanth.org/blog/2025/07...
Reposted by Vincent Traag
We’re hiring a Postdoctoral Researcher to help lead my interdisciplinary team at FZI!
Work with us on the automated analysis and countering of #disinformation — at the intersection of AI, computational social science, and #democracy.
👉 Please apply and share! karriere.fzi.de/Vacancies/11...
Work with us on the automated analysis and countering of #disinformation — at the intersection of AI, computational social science, and #democracy.
👉 Please apply and share! karriere.fzi.de/Vacancies/11...
November 10, 2025 at 11:32 AM
We’re hiring a Postdoctoral Researcher to help lead my interdisciplinary team at FZI!
Work with us on the automated analysis and countering of #disinformation — at the intersection of AI, computational social science, and #democracy.
👉 Please apply and share! karriere.fzi.de/Vacancies/11...
Work with us on the automated analysis and countering of #disinformation — at the intersection of AI, computational social science, and #democracy.
👉 Please apply and share! karriere.fzi.de/Vacancies/11...
Reposted by Vincent Traag
🎓 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 10:16 AM
🎓 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...
Reposted by Vincent Traag
Job! A vacancy at the @eui-eu.bsky.social for a postdoc joining the @learnineq.bsky.social project, for 13 months, starting mid January. We study inequalities in school careers, and we engage with policy makers. The vacancy is here, please forward. DEADLINE 24 NOVEMBER. www.eui.eu/Documents/Se...
November 5, 2025 at 6:11 PM
Job! A vacancy at the @eui-eu.bsky.social for a postdoc joining the @learnineq.bsky.social project, for 13 months, starting mid January. We study inequalities in school careers, and we engage with policy makers. The vacancy is here, please forward. DEADLINE 24 NOVEMBER. www.eui.eu/Documents/Se...
Reposted by Vincent Traag
Our study of 400 million tweets shows that the “war on science” is far more complex than a simple clash between truth and falsehood.
🔍 read more in our latest article
magazine.fbk.eu/en/news/what...
@ricgallotti.bsky.social
@chub-fbk.bsky.social
@vtraag.bsky.social
🔍 read more in our latest article
magazine.fbk.eu/en/news/what...
@ricgallotti.bsky.social
@chub-fbk.bsky.social
@vtraag.bsky.social
What a 400-Million-Tweet study revealed about the “War on Science”
The European project “Understanding Misinformation and Science in Societal Debates” (UnMiSSeD) aims at understanding the overlap between science and misinformation with a particular focus on the COVID...
magazine.fbk.eu
November 5, 2025 at 10:05 AM
Our study of 400 million tweets shows that the “war on science” is far more complex than a simple clash between truth and falsehood.
🔍 read more in our latest article
magazine.fbk.eu/en/news/what...
@ricgallotti.bsky.social
@chub-fbk.bsky.social
@vtraag.bsky.social
🔍 read more in our latest article
magazine.fbk.eu/en/news/what...
@ricgallotti.bsky.social
@chub-fbk.bsky.social
@vtraag.bsky.social
Reposted by Vincent Traag
📣 This Friday, we will have another seminar: @nathanaelsheehan.bsky.social from TU Munich will give a talk on 'Metascience of Past, Present, & Future'.
🎧 Make sure to join!
📅 Friday, 7.11.2025 | 3:00-4:15 PM (CET)
📌 Online & at CWTS
www.universiteitleiden.nl/en/events/20...
🎧 Make sure to join!
📅 Friday, 7.11.2025 | 3:00-4:15 PM (CET)
📌 Online & at CWTS
www.universiteitleiden.nl/en/events/20...
Metascience of Past, Present, & Future
This talk traces the trajectory of metascience from its origins in the Unity of Science movement to its contemporary form as an empirical reform project. I argue that while its methods and objects hav...
www.universiteitleiden.nl
November 4, 2025 at 12:02 PM
📣 This Friday, we will have another seminar: @nathanaelsheehan.bsky.social from TU Munich will give a talk on 'Metascience of Past, Present, & Future'.
🎧 Make sure to join!
📅 Friday, 7.11.2025 | 3:00-4:15 PM (CET)
📌 Online & at CWTS
www.universiteitleiden.nl/en/events/20...
🎧 Make sure to join!
📅 Friday, 7.11.2025 | 3:00-4:15 PM (CET)
📌 Online & at CWTS
www.universiteitleiden.nl/en/events/20...
Reposted by Vincent Traag
In het Financieele Dagblad beargumenteer ik dat universiteiten gelijk hebben om afstand te nemen van ranglijsten, in tegenstelling tot wat Sebastien Valkenberg in zijn recente column stelt:
fd.nl/opinie/15757...
FD stuk is paywalled, maar is ook beschikbaar via:
docs.google.com/document/d/1...
fd.nl/opinie/15757...
FD stuk is paywalled, maar is ook beschikbaar via:
docs.google.com/document/d/1...
Waarom universiteiten gelijk hebben als ze afstand nemen van misleidende ranglijsten en focussen op echte kwaliteit
Internationale ranglijsten lijken objectief, maar meten vooral wat commercieel goed uitkomt. Ze zeggen weinig over de kwaliteit van onderwijs en onderzoek, schrijft Ludo Waltman, voorzitter van de nat...
fd.nl
November 1, 2025 at 3:02 PM
In het Financieele Dagblad beargumenteer ik dat universiteiten gelijk hebben om afstand te nemen van ranglijsten, in tegenstelling tot wat Sebastien Valkenberg in zijn recente column stelt:
fd.nl/opinie/15757...
FD stuk is paywalled, maar is ook beschikbaar via:
docs.google.com/document/d/1...
fd.nl/opinie/15757...
FD stuk is paywalled, maar is ook beschikbaar via:
docs.google.com/document/d/1...
Reposted by Vincent Traag
Work with us at UVA School of Data Science!
@uvadatascience.bsky.social will continue to hire multiple faculty members across many areas of data science! Let me know if you're curious about our school. :)
datascience.virginia.edu/pages/join-o...
@uvadatascience.bsky.social will continue to hire multiple faculty members across many areas of data science! Let me know if you're curious about our school. :)
datascience.virginia.edu/pages/join-o...
Join Our Team — School of Data Science
We are hiring faculty and staff to build a forward-thinking community with a diversity of perspectives, backgrounds, and ideas centered around data science.
datascience.virginia.edu
October 31, 2025 at 9:12 PM
Work with us at UVA School of Data Science!
@uvadatascience.bsky.social will continue to hire multiple faculty members across many areas of data science! Let me know if you're curious about our school. :)
datascience.virginia.edu/pages/join-o...
@uvadatascience.bsky.social will continue to hire multiple faculty members across many areas of data science! Let me know if you're curious about our school. :)
datascience.virginia.edu/pages/join-o...
Reposted by Vincent Traag
We're hiring a Lecturer in Political Science @vuamsterdam.bsky.social (deadline Nov 24): 👉 werkenbij.vu.nl/vacatures/le...
Vacature — Lecturer in Political Science – Comparative Politics
Do you have a PhD in Political Science and some teaching experience? Are you interested in teaching a diverse and international student community? The Vrije Universiteit Amsterdam (VU) offers a positi...
werkenbij.vu.nl
October 31, 2025 at 1:15 PM
We're hiring a Lecturer in Political Science @vuamsterdam.bsky.social (deadline Nov 24): 👉 werkenbij.vu.nl/vacatures/le...
Reposted by Vincent Traag
Congratulations to the Data Rescue Project volunteers for their NDSA Excellence Award!
See the full list of contributors and learn more about this achievement at https://myumi.ch/qZMx2
See the full list of contributors and learn more about this achievement at https://myumi.ch/qZMx2
October 31, 2025 at 5:25 PM
Congratulations to the Data Rescue Project volunteers for their NDSA Excellence Award!
See the full list of contributors and learn more about this achievement at https://myumi.ch/qZMx2
See the full list of contributors and learn more about this achievement at https://myumi.ch/qZMx2
The leidenalg package is now also updated and now supports igraph 1.0. github.com/vtraag/leide... You can download and install using pip. The conda package will be updated shortly.
October 31, 2025 at 5:42 PM
The leidenalg package is now also updated and now supports igraph 1.0. github.com/vtraag/leide... You can download and install using pip. The conda package will be updated shortly.
Reposted by Vincent Traag
How do #OpenScience practices shape #ResearchCulture? 🧪
A new Scoping Review commissioned by Science Europe explores their benefits and unintended effects on values like equity, openness, integrity, and collaboration.
🔗 bit.ly/47UeY2L
A new Scoping Review commissioned by Science Europe explores their benefits and unintended effects on values like equity, openness, integrity, and collaboration.
🔗 bit.ly/47UeY2L
October 30, 2025 at 11:09 AM
How do #OpenScience practices shape #ResearchCulture? 🧪
A new Scoping Review commissioned by Science Europe explores their benefits and unintended effects on values like equity, openness, integrity, and collaboration.
🔗 bit.ly/47UeY2L
A new Scoping Review commissioned by Science Europe explores their benefits and unintended effects on values like equity, openness, integrity, and collaboration.
🔗 bit.ly/47UeY2L
Reposted by Vincent Traag
📄 New scoping review: "The Contributions of Open Science to Research Culture", a collaboration between the Know Center and CWTS that was commissioned by @scienceeurope.org.
📚 Find out more in the news item on our website 👉 tinyurl.com/bdd6jw96
@alexrushforth.bsky.social
📚 Find out more in the news item on our website 👉 tinyurl.com/bdd6jw96
@alexrushforth.bsky.social
October 30, 2025 at 1:01 PM
📄 New scoping review: "The Contributions of Open Science to Research Culture", a collaboration between the Know Center and CWTS that was commissioned by @scienceeurope.org.
📚 Find out more in the news item on our website 👉 tinyurl.com/bdd6jw96
@alexrushforth.bsky.social
📚 Find out more in the news item on our website 👉 tinyurl.com/bdd6jw96
@alexrushforth.bsky.social
Reposted by Vincent Traag
Today is the day 🎁
The #dsa regime for researchers to get access to platform data to study societal impact and risks starts TODAY.
This has been a loooooong time coming. And the proof of the pudding will be in the eating …
#dataaccess #commsky
digital-strategy.ec.europa.eu/en/news/new-...
The #dsa regime for researchers to get access to platform data to study societal impact and risks starts TODAY.
This has been a loooooong time coming. And the proof of the pudding will be in the eating …
#dataaccess #commsky
digital-strategy.ec.europa.eu/en/news/new-...
New measures unlock access to data from largest online platforms to support research
As of today, new rules under the Digital Services Act (DSA) will allow researchers to gain unprecedented access to very large online platforms' data to study the societal impact stemming from the plat...
digital-strategy.ec.europa.eu
October 29, 2025 at 3:00 PM
Today is the day 🎁
The #dsa regime for researchers to get access to platform data to study societal impact and risks starts TODAY.
This has been a loooooong time coming. And the proof of the pudding will be in the eating …
#dataaccess #commsky
digital-strategy.ec.europa.eu/en/news/new-...
The #dsa regime for researchers to get access to platform data to study societal impact and risks starts TODAY.
This has been a loooooong time coming. And the proof of the pudding will be in the eating …
#dataaccess #commsky
digital-strategy.ec.europa.eu/en/news/new-...
Reposted by Vincent Traag
📊 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 Vincent Traag
🏛️ New call for proposals and report by the King Baudouin Foundation, with contribution by CWTS to identify research on mental health, areas of strong research activity and potential gaps:
Call for proposals 👉 tinyurl.com/n6c3dbva
Full report 👉 tinyurl.com/37uxdsaz
Methods 👉 tinyurl.com/5hxpyznh
Call for proposals 👉 tinyurl.com/n6c3dbva
Full report 👉 tinyurl.com/37uxdsaz
Methods 👉 tinyurl.com/5hxpyznh
Towards a paradigm shift in mental health care
kbs-frb.be
October 28, 2025 at 1:49 PM
🏛️ New call for proposals and report by the King Baudouin Foundation, with contribution by CWTS to identify research on mental health, areas of strong research activity and potential gaps:
Call for proposals 👉 tinyurl.com/n6c3dbva
Full report 👉 tinyurl.com/37uxdsaz
Methods 👉 tinyurl.com/5hxpyznh
Call for proposals 👉 tinyurl.com/n6c3dbva
Full report 👉 tinyurl.com/37uxdsaz
Methods 👉 tinyurl.com/5hxpyznh
Reposted by Vincent Traag
TLDR; The PSF has made the decision to put our community and our shared diversity, equity, and inclusion values ahead of seeking $1.5M in new revenue. Please read and share. pyfound.blogspot.com/2025/10/NSF-...
🧵
🧵
The official home of the Python Programming Language
www.python.org
October 27, 2025 at 2:47 PM
TLDR; The PSF has made the decision to put our community and our shared diversity, equity, and inclusion values ahead of seeking $1.5M in new revenue. Please read and share. pyfound.blogspot.com/2025/10/NSF-...
🧵
🧵
Reposted by Vincent Traag
Two Postdoctoral Researcher Positions in Sociology/Social Sciences at the University of Oldenburg (Germany)
Position 1 – Computational Text Analysis / LLMs — uol.de/job790en
Position 2 – Survey Research / Experiments — uol.de/job791en
Position 1 – Computational Text Analysis / LLMs — uol.de/job790en
Position 2 – Survey Research / Experiments — uol.de/job791en
Postdoctoral Researcher, SCEPTIC-Position 1 // University of Oldenburg
uol.de
October 24, 2025 at 10:07 AM
Two Postdoctoral Researcher Positions in Sociology/Social Sciences at the University of Oldenburg (Germany)
Position 1 – Computational Text Analysis / LLMs — uol.de/job790en
Position 2 – Survey Research / Experiments — uol.de/job791en
Position 1 – Computational Text Analysis / LLMs — uol.de/job790en
Position 2 – Survey Research / Experiments — uol.de/job791en
Reposted by Vincent Traag
When there is a random way to do something, there is a less random way that is better but requires more thought. In this case, regression models that make no sense don't belong in a multiverse analysis. An inferential regression without a causal justification is like an opinion without reasons.
October 23, 2025 at 4:34 PM
When there is a random way to do something, there is a less random way that is better but requires more thought. In this case, regression models that make no sense don't belong in a multiverse analysis. An inferential regression without a causal justification is like an opinion without reasons.
Reposted by Vincent Traag
The ENSAE-CREST is hiring a computational sociologist -- Assistant or Associate Professor.
Date of appointment: September 2026.
Details here : www.css.cnrs.fr/assistant-or...
Date of appointment: September 2026.
Details here : www.css.cnrs.fr/assistant-or...
www.css.cnrs.fr
October 24, 2025 at 11:48 PM
The ENSAE-CREST is hiring a computational sociologist -- Assistant or Associate Professor.
Date of appointment: September 2026.
Details here : www.css.cnrs.fr/assistant-or...
Date of appointment: September 2026.
Details here : www.css.cnrs.fr/assistant-or...
Vanwege de grote hoeveelheid zwevende kiezers voor de komende kamerverkiezingen, ben ik eens gaan proberen om de onzekerheid van de zwevende kiezers te gaan verwerken in schattingen van zetelverdelingen op basis van peilingen. Ik kon hier niet zo snel literatuur over vinden. Heeft iemand suggesties?
October 24, 2025 at 9:31 PM
Vanwege de grote hoeveelheid zwevende kiezers voor de komende kamerverkiezingen, ben ik eens gaan proberen om de onzekerheid van de zwevende kiezers te gaan verwerken in schattingen van zetelverdelingen op basis van peilingen. Ik kon hier niet zo snel literatuur over vinden. Heeft iemand suggesties?
Reposted by Vincent Traag
Panel discussion on the Resilience of Open Science: geopolitical developments demonstrate the strength of Open Science: *because* of the openness of e.g. medical or climate research data, the scientific community can jump in to safeguard it, after executive […]
[Original post on social.edu.nl]
[Original post on social.edu.nl]
October 24, 2025 at 2:29 PM
Panel discussion on the Resilience of Open Science: geopolitical developments demonstrate the strength of Open Science: *because* of the openness of e.g. medical or climate research data, the scientific community can jump in to safeguard it, after executive […]
[Original post on social.edu.nl]
[Original post on social.edu.nl]
Reposted by Vincent Traag
Don't forget to submit your Assistant Professor in Computational Social Science application this weekend❗
📚 jobs.lse.ac.uk/Vacancies/W/...
Applications close 26 October 🚨
📚 jobs.lse.ac.uk/Vacancies/W/...
Applications close 26 October 🚨
October 24, 2025 at 4:08 PM
Don't forget to submit your Assistant Professor in Computational Social Science application this weekend❗
📚 jobs.lse.ac.uk/Vacancies/W/...
Applications close 26 October 🚨
📚 jobs.lse.ac.uk/Vacancies/W/...
Applications close 26 October 🚨
Reposted by Vincent Traag
"Nederland is één groot AZC"
October 23, 2025 at 7:14 PM
"Nederland is één groot AZC"
Reposted by Vincent Traag
"De grootste groep is arbeidsmigranten." Dus volgt een kiezersvraag over... asielzoekerscentra. #SBS6debat
October 23, 2025 at 7:00 PM
"De grootste groep is arbeidsmigranten." Dus volgt een kiezersvraag over... asielzoekerscentra. #SBS6debat