Celebrating 5 years of Leiden Madtrics

On Halloween 2019, exactly five years ago to the day, this blog was launched as a modern replacement for the older CWTS institute blog. In this post we, the editors, would like to celebrate this fact and briefly analyse the journey.

Blog team • October 31, 2024

Opening the black box of university rankings

Today two university rankings were released, one by CWTS and one by Times Higher Education. Ludo Waltman and Nees Jan van Eck, responsible for the CWTS Leiden Ranking, use this occasion to discuss the importance of transparency of rankings.

Ludo Waltman and Nees Jan van Eck • October 09, 2024

Launch of the CWTS Leiden Ranking Open Edition 2024

Earlier this year CWTS published the first Open Edition of the CWTS Leiden Ranking. Today the Leiden Ranking Open Edition 2024 was launched. In this post, Nees Jan van Eck and colleagues discuss the latest developments around the Open Edition of the Leiden Ranking.

Nees Jan van Eck, Ludo Waltman and Mark Neijssel • October 09, 2024

Bezuiniging op Open Science NL, superzonde!

Afgelopen week werd een forse bezuiniging op Open Science NL bekendgemaakt. Ludo Waltman, open science ambassadeur van Universiteit Leiden, bespreekt de gevolgen van deze bezuiniging.

Ludo Waltman • September 25, 2024

CWTS ventures Into the Great Wide Open

Next week, the STI 2024 conference will take place in Berlin. Our colleagues at CWTS are already busy preparing their contributions. This blog post highlights all the posters, presentations, and special sessions that they are involved in.

Blog team • September 12, 2024

The GLOBAL initiative - Contribute to improving the reporting of bibliometric analyses

The team of the GLOBAL initiative is looking for people with experience in bibliometric analyses to participate in a Delphi study to develop a reporting guideline for bibliometric analysis. This post introduces the GLOBAL initiative and invites colleagues with relevant experience to contribute.

Jeremy Y. Ng, Henry Liu and Stefanie Haustein • July 26, 2024 • 1 comment

Towards the democratisation of open research information for scientometrics and science policy: the Campinas experience

The Barcelona Declaration represented a major step towards the adoption of open data for scientometrics and science policy. This blogpost discusses the importance of also moving towards democratising the access and use of these open resources, by sharing our experience from Campinas in Brazil.

Alysson Mazoni and Rodrigo Costas • June 06, 2024

Origin and evolution of the "publish or perish" phenomenon

The origin of the phrase "publish or perish" has been intriguing since this question was first raised by Eugene Garfield in 1996. In this blog, I will talk about the evolution of the meaning of this phrase and show the earliest use known at this point.

Vladimir M. Moskovkin • June 04, 2024

An update on the Scholars on Twitter dataset

In 2022, we published a dataset of Scholars on Twitter. This blog post introduces an update to this dataset and discusses some of the challenges with our data providers: Twitter, Crossref, and OpenAlex. These challenges made the original dataset and process obsolete and this update necessary.

Philippe Mongeon, Timothy D. Bowman, Rodrigo Costas and Wenceslao Arroyo-Machado • April 24, 2024