Rodrigo Costas
@rodrigocostas.bsky.social
Senior researcher in #bibliometrics, #informetrics & #scientometrics at the Centre for Science and Technology Studies (CWTS)
Also at http://social.cwts.nl/@rodrigocostas
ORCID: https://orcid.org/0000-0002-7465-6462
Also at http://social.cwts.nl/@rodrigocostas
ORCID: https://orcid.org/0000-0002-7465-6462
Reposted by Rodrigo Costas
1/2 📊 @cwtsnl.bsky.social published the 2025 release of its Leiden Ranking Open Edition: a real step toward open research information.
Built on OpenAlex, it:
• Uses transparent, reusable data
• Includes national & regional publishing (not only “core” journals)...
Built on OpenAlex, it:
• Uses transparent, reusable data
• Includes national & regional publishing (not only “core” journals)...
October 30, 2025 at 12:46 PM
1/2 📊 @cwtsnl.bsky.social published the 2025 release of its Leiden Ranking Open Edition: a real step toward open research information.
Built on OpenAlex, it:
• Uses transparent, reusable data
• Includes national & regional publishing (not only “core” journals)...
Built on OpenAlex, it:
• Uses transparent, reusable data
• Includes national & regional publishing (not only “core” journals)...
Reposted by Rodrigo Costas
Very proud of the improvements made by the Leiden Ranking team to the Open Edition of the ranking.
This demonstrates our commitment at CWTS to @barcelonadori.bsky.social and the open research information transition.
Great work by @neesjanvaneck.bsky.social and the rest of the team!
This demonstrates our commitment at CWTS to @barcelonadori.bsky.social and the open research information transition.
Great work by @neesjanvaneck.bsky.social and the rest of the team!
📊 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 5:59 PM
Very proud of the improvements made by the Leiden Ranking team to the Open Edition of the ranking.
This demonstrates our commitment at CWTS to @barcelonadori.bsky.social and the open research information transition.
Great work by @neesjanvaneck.bsky.social and the rest of the team!
This demonstrates our commitment at CWTS to @barcelonadori.bsky.social and the open research information transition.
Great work by @neesjanvaneck.bsky.social and the rest of the team!
Reposted by Rodrigo Costas
🔎 We invite you to take a look at the new release and explore all the innovations for yourself 👉 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
🔎 We invite you to take a look at the new release and explore all the innovations for yourself 👉 www.leidenranking.com
Reposted by Rodrigo Costas
📊 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 Rodrigo Costas
📊 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 Rodrigo Costas
✒️ We have also written a blog post to explain the updates and their implications in more detail 👉 www.leidenmadtrics.nl/articles/the...
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 12:37 PM
✒️ We have also written a blog post to explain the updates and their implications in more detail 👉 www.leidenmadtrics.nl/articles/the...
Reposted by Rodrigo Costas
📰 Quantitative research on science communication requires suitable data. When it comes to academic press releases, that data is scarce. In a new paper, we introduce a dataset of more than 500,000 press releases published on @eurekalert.bsky.social. doi.org/10.1038/s415...
An open dataset of EurekAlert! press releases for science communication research - Scientific Data
Scientific Data - An open dataset of EurekAlert! press releases for science communication research
doi.org
October 27, 2025 at 10:41 AM
📰 Quantitative research on science communication requires suitable data. When it comes to academic press releases, that data is scarce. In a new paper, we introduce a dataset of more than 500,000 press releases published on @eurekalert.bsky.social. doi.org/10.1038/s415...
Reposted by Rodrigo Costas
🌏 This paper has been a collaboration between Jingwen Zhang from Ningbo University, @eomalea.bsky.social from the Polytechnic University of Valencia, Alysson Fernandes Mazoni from the University of Campinas, and @rodrigocostas.bsky.social and me from @cwtsnl.bsky.social.
October 27, 2025 at 10:41 AM
🌏 This paper has been a collaboration between Jingwen Zhang from Ningbo University, @eomalea.bsky.social from the Polytechnic University of Valencia, Alysson Fernandes Mazoni from the University of Campinas, and @rodrigocostas.bsky.social and me from @cwtsnl.bsky.social.
Reposted by Rodrigo Costas
Want to be part of a conversation about geopolitics and Open Science? Why not join us in Leiden on the 6th of November for the workshop "Resilience in times of crisis". Registration open now (in person only). www.universiteitleiden.nl/en/events/20...
Resilience in times of crisis: Strengthening Open Science against geopolitical pressures
The success of the Open Science movement relies on research products and infrastructures being open, accessible and sustainably curated. Recent global events, however, have illustrated the vulnerabili...
www.universiteitleiden.nl
October 10, 2025 at 3:30 PM
Want to be part of a conversation about geopolitics and Open Science? Why not join us in Leiden on the 6th of November for the workshop "Resilience in times of crisis". Registration open now (in person only). www.universiteitleiden.nl/en/events/20...
Reposted by Rodrigo Costas
QSS is now accepting articles that have gone through independent, open peer review via MetaResearch Open Review (MetaROR). The authors of an article on tracking transformative agreements through open metadata shared their experiences using MetaROR's Publish-Review-Curate (PRC) model:
The MetaROR Publish-Review-Curate Model: our experience as authors | Open Science NL
As professionals working in open science and scholarly communication reform, we believe in practicing what we preach. That’s why we recently chose to publish an article using the…
www.openscience.nl
September 15, 2025 at 1:16 PM
QSS is now accepting articles that have gone through independent, open peer review via MetaResearch Open Review (MetaROR). The authors of an article on tracking transformative agreements through open metadata shared their experiences using MetaROR's Publish-Review-Curate (PRC) model:
Reposted by Rodrigo Costas
💸 Our latest blog post describes how the research project “Tracking Research Funding Flows in the Global South” by @clacso.bsky.social, @cwts.nl & Siris Academic aims to make visible & analyze ways in which international science funding circulates.
👇 Read it now on Leiden Madtrics
👇 Read it now on Leiden Madtrics
Analysing research funding flows in the Global South
In a context marked by deep asymmetries in access to research resources, the research project “Tracking Research Funding Flows in the Global South” aims to make visible and analyze the ways in which i...
www.leidenmadtrics.nl
July 22, 2025 at 1:13 PM
💸 Our latest blog post describes how the research project “Tracking Research Funding Flows in the Global South” by @clacso.bsky.social, @cwts.nl & Siris Academic aims to make visible & analyze ways in which international science funding circulates.
👇 Read it now on Leiden Madtrics
👇 Read it now on Leiden Madtrics
Reposted by Rodrigo Costas
🙏 A big thank you to our contributing authors: Matías Alcántara, Mariángela Nápoli, Judith Naidorf, @rodrigocostas.bsky.social & @ismaelrafols.bsky.social
Analysing research funding flows in the Global South
In a context marked by deep asymmetries in access to research resources, the research project “Tracking Research Funding Flows in the Global South” aims to make visible and analyze the ways in which i...
www.leidenmadtrics.nl
July 22, 2025 at 1:14 PM
🙏 A big thank you to our contributing authors: Matías Alcántara, Mariángela Nápoli, Judith Naidorf, @rodrigocostas.bsky.social & @ismaelrafols.bsky.social
Reposted by Rodrigo Costas
👏 Thanks to our authors (Juan Pablo Bascur, @rodrigocostas.bsky.social, @suzanv.bsky.social), reviewers (@dwh.bsky.social, @essepuntato.bsky.social, Verena Weimer) & editors (@alexh.bsky.social, Kathryn Zeiler) for their contribution to (and trust in) MetaROR and the publish-review-curate model!
July 16, 2025 at 3:40 PM
👏 Thanks to our authors (Juan Pablo Bascur, @rodrigocostas.bsky.social, @suzanv.bsky.social), reviewers (@dwh.bsky.social, @essepuntato.bsky.social, Verena Weimer) & editors (@alexh.bsky.social, Kathryn Zeiler) for their contribution to (and trust in) MetaROR and the publish-review-curate model!
Reposted by Rodrigo Costas
New preprint! 🚨
We study the interaction between misinformation and science on Twitter during COVID-19 based on ~407M tweets. Both science and misinformation featured prominently during the pandemic, but the interaction between the two has not been studied on this scale before.
🧵 (1/10)
We study the interaction between misinformation and science on Twitter during COVID-19 based on ~407M tweets. Both science and misinformation featured prominently during the pandemic, but the interaction between the two has not been studied on this scale before.
🧵 (1/10)
July 4, 2025 at 10:38 AM
New preprint! 🚨
We study the interaction between misinformation and science on Twitter during COVID-19 based on ~407M tweets. Both science and misinformation featured prominently during the pandemic, but the interaction between the two has not been studied on this scale before.
🧵 (1/10)
We study the interaction between misinformation and science on Twitter during COVID-19 based on ~407M tweets. Both science and misinformation featured prominently during the pandemic, but the interaction between the two has not been studied on this scale before.
🧵 (1/10)
Reposted by Rodrigo Costas
Great news: At #Metascience2025 @wellcometrust.bsky.social just announced its signature of the Barcelona Declaration on Open Research Information!
Wellcome CEO John-Arne Røttingen made the important argument that open research information offers crucial evidence to support metascience.
@cwts.nl
Wellcome CEO John-Arne Røttingen made the important argument that open research information offers crucial evidence to support metascience.
@cwts.nl
🤝 Welcome Wellcome!
Wellcome Trust is the first UK funder to sign the Barcelona Declaration on Open Research Information.
Their support strengthens the global push for open, reliable, and reusable research metadata.
👉 barcelona-declaration.org/signatories/
#OpenResearchInformation
Wellcome Trust is the first UK funder to sign the Barcelona Declaration on Open Research Information.
Their support strengthens the global push for open, reliable, and reusable research metadata.
👉 barcelona-declaration.org/signatories/
#OpenResearchInformation
June 30, 2025 at 3:51 PM
Great news: At #Metascience2025 @wellcometrust.bsky.social just announced its signature of the Barcelona Declaration on Open Research Information!
Wellcome CEO John-Arne Røttingen made the important argument that open research information offers crucial evidence to support metascience.
@cwts.nl
Wellcome CEO John-Arne Røttingen made the important argument that open research information offers crucial evidence to support metascience.
@cwts.nl
Reposted by Rodrigo Costas
Together with Fernanda Beigel, @cwtsleiden.bsky.social colleague @ismaelrafols.bsky.social offers a highly critical perspective on developments in open science. Worth a read!
May 8, 2025 at 5:17 PM
Together with Fernanda Beigel, @cwtsleiden.bsky.social colleague @ismaelrafols.bsky.social offers a highly critical perspective on developments in open science. Worth a read!
Reposted by Rodrigo Costas
🌏 In our latest blogpost, @ismaelrafols.bsky.social and Fernanda Beigel discuss whether open science actually fulfils its expectations of leading to more equity and improving research's societal impact.
👇 Read it now on Leiden Madtrics
👇 Read it now on Leiden Madtrics
The contested field of Open Science: a debate through the lens of inclusion
Most implementations of Open Science do not fulfil the expectations that Open Science will lead to more equity and improve the societal impact of research. We discuss these worrying trends through the...
www.leidenmadtrics.nl
May 8, 2025 at 8:48 AM
🌏 In our latest blogpost, @ismaelrafols.bsky.social and Fernanda Beigel discuss whether open science actually fulfils its expectations of leading to more equity and improving research's societal impact.
👇 Read it now on Leiden Madtrics
👇 Read it now on Leiden Madtrics
Reposted by Rodrigo Costas
It took some time, but here it is! "The use of informetric methods to study diversity in the scientific workforce: A literature review" now in QSS 🛰️ w @torressalinas.bsky.social @carmencs.bsky.social @rodrigocostas.bsky.social & Z. Chinchilla 🎆 doi.org/10.1162/qss_... 🎆
The use of informetric methods to study diversity in the scientific workforce: A literature review
Abstract. This literature review examines the application of informetric methods to assess diversity within the scientific workforce, focusing on recent advances in author name disambiguation, researc...
doi.org
April 21, 2025 at 3:36 PM
It took some time, but here it is! "The use of informetric methods to study diversity in the scientific workforce: A literature review" now in QSS 🛰️ w @torressalinas.bsky.social @carmencs.bsky.social @rodrigocostas.bsky.social & Z. Chinchilla 🎆 doi.org/10.1162/qss_... 🎆
Reposted by Rodrigo Costas
Excited to announce I've been appointed Executive Director of the Barcelona Declaration @BarcelonaDORI , (alongside my other consulting activities). We have funding for the next 3 years and will soon discuss the creation of a governance board […]
Original post on akademienl.social
akademienl.social
February 7, 2025 at 2:59 PM
Excited to announce I've been appointed Executive Director of the Barcelona Declaration @BarcelonaDORI , (alongside my other consulting activities). We have funding for the next 3 years and will soon discuss the creation of a governance board […]
Reposted by Rodrigo Costas
📢 New Blog Post!
Camilla Lindelöw and elinevdw.bsky.social share some preliminary findings from an exploratory study on independent researchers 📚, using OpenAlex data.
Read the full post here 👇 www.leidenmadtrics.nl/articles/ind...
Camilla Lindelöw and elinevdw.bsky.social share some preliminary findings from an exploratory study on independent researchers 📚, using OpenAlex data.
Read the full post here 👇 www.leidenmadtrics.nl/articles/ind...
Independent researchers: traces in bibliographic data
This blog post presents preliminary findings from an exploratory study on independent researchers, using OpenAlex data to trace their research interests and career paths. We also discuss our experienc...
www.leidenmadtrics.nl
January 14, 2025 at 2:36 PM
📢 New Blog Post!
Camilla Lindelöw and elinevdw.bsky.social share some preliminary findings from an exploratory study on independent researchers 📚, using OpenAlex data.
Read the full post here 👇 www.leidenmadtrics.nl/articles/ind...
Camilla Lindelöw and elinevdw.bsky.social share some preliminary findings from an exploratory study on independent researchers 📚, using OpenAlex data.
Read the full post here 👇 www.leidenmadtrics.nl/articles/ind...
Reposted by Rodrigo Costas
It is urgent that all authors retain at least part of the copyright. In Spain it is already mandatory for those financed with public funds, to be able to deposit the accepted version in institutional or thematic repositories. Metadata should always be open.
After Springer in 2022, now Elsevier forbids OpenAlex to store abstracts of Closed Access papers.
github.com/ourresearch/...
We think this is a worrying trend, hindering the discoverability of research. @relx.bsky.social Is this what you mean with 'Empowering Open Science' ?
github.com/ourresearch/...
We think this is a worrying trend, hindering the discoverability of research. @relx.bsky.social Is this what you mean with 'Empowering Open Science' ?
do not store closed elsevier abstract · ourresearch/openalex-guts@b85b3bc
github.com
November 25, 2024 at 10:33 PM
It is urgent that all authors retain at least part of the copyright. In Spain it is already mandatory for those financed with public funds, to be able to deposit the accepted version in institutional or thematic repositories. Metadata should always be open.
At CWTS we are reorganizing our knowledge agenda into three focal areas www.leidenmadtrics.nl/articles/the.... Here is an introduction to our Focal Area Engagement & Inclusion! www.leidenmadtrics.nl/articles/int... Feedback, comments, collaborations are most welcome! Reach out if you are interested!
November 23, 2023 at 10:16 AM
At CWTS we are reorganizing our knowledge agenda into three focal areas www.leidenmadtrics.nl/articles/the.... Here is an introduction to our Focal Area Engagement & Inclusion! www.leidenmadtrics.nl/articles/int... Feedback, comments, collaborations are most welcome! Reach out if you are interested!
Reposted by Rodrigo Costas
Highly interesting study from the ScholCommLab on how much funding is spent on APCs at the Big 5 journal publishers. It’s a lot, it mostly goes to Springer-Nature and especially Scientific Reports and Nature Communications: direct.mit.edu/qss/article/...
The Oligopoly’s Shift to Open Access. How the Big Five Academic Publishers Profit from Article Pro...
Abstract. This study aims to estimate the total amount of article processing charges (APCs) paid to publish open access (OA) in journals controlled by the five large commercial publishers Elsevier, Sa...
direct.mit.edu
November 10, 2023 at 3:47 PM
Highly interesting study from the ScholCommLab on how much funding is spent on APCs at the Big 5 journal publishers. It’s a lot, it mostly goes to Springer-Nature and especially Scientific Reports and Nature Communications: direct.mit.edu/qss/article/...
Reposted by Rodrigo Costas
Does science need heroes or does it need to reform? I elaborate on this in a blog post. Idolizing heroes can worsen #bias, #inequality & #competition. Yet, it does require good #leadership to ignite structural change www.leidenmadtrics.nl/articles/doe...
October 12, 2023 at 1:03 PM
Does science need heroes or does it need to reform? I elaborate on this in a blog post. Idolizing heroes can worsen #bias, #inequality & #competition. Yet, it does require good #leadership to ignite structural change www.leidenmadtrics.nl/articles/doe...