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
Why openly available abstracts are important — overview of the current state of affairs Openness of the metadata of scientific articles is increasingly being discussed. In this blog post, Aaron Tay (SMU Libraries, Singapore Management University), Bianca Kramer (Utrecht University Library), and Ludo Waltman (CWTS, Leiden University) discuss the value of openly available abstracts. Aaron Tay, Bianca Kramer and Ludo Waltman • June 30, 2020
Comparing bibliographic data sources: Q&A Last week CWTS researchers Martijn Visser, Nees Jan van Eck, and Ludo Waltman published the paper 'Large-scale comparison of bibliographic data sources: Scopus, Web of Science, Dimensions, Crossref, and Microsoft Academic'. In this post, the authors answer ten questions about their work. Martijn Visser, Nees Jan van Eck and Ludo Waltman • May 29, 2020
Delineating COVID-19 and coronavirus research Many initiatives are keeping track of research on COVID-19 and coronaviruses. These initiatives, while valuable because they allow for fast access to relevant research, pose the question of subject delineation. We analyse here one such initiative, the COVID-19 Open Research Dataset (CORD-19). Giovanni Colavizza, Rodrigo Costas, Vincent Traag, Nees Jan van Eck, Thed van Leeuwen and Ludo Waltman • April 21, 2020
Recommendations to Crossref from a Science Studies Perspective In a recent talk at a Crossref meeting, Ludo Waltman spoke about open citations and made three recommendations to Crossref. Ludo Waltman • November 21, 2019
