The challenge of categorizing research

Assigning publications to research fields can be a challenge. While the demarcation of fields can be supported by algorithms, labeling fields properly requires to know what holds them together. I investigated this problem and discovered interesting reasons for publications to form a research field.

Peter Sjögårde • December 03, 2019

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

New interactive website to visualize Big Pharma’s publication landscape

This blog post presents and describes a newly created interactive website on the publication activity of some of the most important pharmaceutical companies worldwide.

Alfredo Yegros and Ismael Ràfols • November 19, 2019

Welcome to Leiden Madtrics!

Madtrics is a portmanteau, a blend of words between mad and metrics. We hope that Leiden Madtrics serves as a way to inspire and educate about topics such as the (mis)use of research metrics, indicators, and rankings in academia. Here are 5 reasons why you should frequent our blog!

Tung Tung Chan • October 31, 2019

Reflections on the Impact of Science Conference 2019

How is impact perceived and evaluated in national and regional science systems nowadays? Which stakeholders are involved and what examples exist on a national and international level? In this post, Grischa Fraumann reports on the Impact of Science conference from 5 until 7 June 2019 in Berlin.

Grischa Fraumann • October 31, 2019

The Pain of Labeling Things

Labeling things is hard, but labeling groups of things is harder! At CWTS we automatically group publications and label them with an algorithm, but these labels can be puzzling for human minds. In this post, I find out how the same group of publications can have the labels "queer theory" and "home".

Juan Pablo Bascur Cifuentes • October 31, 2019

Mapping science using Microsoft Academic data

This blog post discusses the emergence of new data sources in the field of bibliometrics, and how to use them to map science.

Nees Jan van Eck and Ludo Waltman • October 28, 2019 • 2 comments

Why are global health needs unmet by research efforts?

Not all diseases receive equal research attention across the globe. This phenomenon, often referred to as the 10/90 gap in health research, has a long history, rife with contention and debate on its accuracy. New research seeks to uncover various factors perpetuating these inequalities.

Ismael Ràfols, Alfredo Yegros, María Francisca Abad-García and Wouter van de Klippe • October 24, 2019