People

Co-Chair, RoRI and Professor & Scientific Director, Centre for Science and Technology Studies (CWTS), Leiden University

Ludo Waltman is scientific director and professor of Quantitative Science Studies at the Centre for Science and Technology Studies (CWTS) at Leiden University.

Ludo’s work focuses on studying and developing infrastructures, algorithms, and tools to support research assessment, science policy, and scholarly communication. Ludo is open science ambassador of Leiden University, president of ASAPbio, chair of the advisory board of OpenCitations, and one of the initiators of the Barcelona Declaration on Open Research Information. Together with his colleague Nees Jan van Eck, Ludo has developed the well-known VOSviewer software for bibliometric visualization. Ludo serves as Editor-in-Chief of the MetaROR (MetaResearch Open Review) platform. Previously he was Editor-in-Chief of the journal Quantitative Science Studies.