VOSviewer goes online! (Part 1) Today, the new VOSviewer Online software was released by CWTS colleagues Nees Jan van Eck and Ludo Waltman. In this post, they discuss the possibilities offered by the software. Nees Jan van Eck and Ludo Waltman • July 16, 2021
Halt the h-index Using the h-index in research evaluation? Rather not. But why not, actually? Why is using this indicator so problematic? And what are the alternatives anyway? Our authors walk you through an infographic that addresses these questions and aims to highlight some key issues in this discussion. Sarah de Rijcke, Ludo Waltman and Thed van Leeuwen • May 19, 2021 • 3 comments
Doing science in times of crisis: Science studies perspectives on COVID-19 (1st & 2nd edition) The webinar series "Doing science in times of crisis: Science studies perspectives on COVID-19" started on 20 May 2020 during the early stages of the pandemic. The goal of this event is to connect and showcase COVID-19 science studies research from institutions around the world. Grischa Fraumann, Giovanni Colavizza, Ludo Waltman and Zohreh Zahedi • March 30, 2021
Bona Fide Journals - Creating a predatory-free academic publishing environment Predatory journals pose a significant problem to academic publishing. In the past, a number of attempts have been made to identify them. This blog post presents a novel approach towards a predatory-free academic publishing landscape: Bona Fide Journals. Leo Waaijers, Ludo Waltman, Saskia de Vries, Thed van Leeuwen and Nees Jan van Eck • March 02, 2021 • 3 comments
Q&A about Elsevier's decision to open its citations Last week Elsevier announced that it has signed the San Francisco Declaration on Research Assessment (DORA) and that it is going to make the reference lists of articles openly available in Crossref. In this Q&A, Ludo Waltman shares his perspective on Elsevier’s decision to open its citations. Ludo Waltman • December 22, 2020 • 1 comment
The causal intricacies of studying gender bias in science A recently published paper on the role of gender in mentorship in science has triggered a lot of debate. In this blog post, Vincent Traag and Ludo Waltman contribute to this debate by emphasizing the importance of understanding the underlying causal mechanisms. Vincent Traag and Ludo Waltman • December 10, 2020
Publications should be FAIR Scholarly data sets are increasingly expected to be FAIR (findable, accessible, interoperable, and reusable). To fully realize the benefits of open access to the scholarly literature, Ludo Waltman argues that publications should be FAIR as well. Ludo Waltman • October 26, 2020
Systematize information on journal policies and practices - A call to action Recently the creators of Transpose and the Platform for Responsible Editorial Policies convened an online workshop on infrastructures that provide information on scholarly journals. In this blog post they look back at the workshop and discuss next steps. Willem Halffman, Serge Horbach, Jessica Polka, Tony Ross-Hellauer and Ludo Waltman • August 31, 2020 • 2 comments
The CWTS Leiden Ranking 2020 At CWTS, we have just released a new edition of our Leiden Ranking. In this post, the core members of the Leiden Ranking team provide a quick update and illustrate some of the insights provided by the ranking. Ludo Waltman, Zeynep Anli, Clara Calero-Medina, Mark Neijssel, Andrea Reyes Elizondo, Nees Jan van Eck and Martijn Visser • July 08, 2020
