Ludo Waltman

Ludo Waltman serves as Scientific Director and Professor of Quantitative Science Studies at the Centre for Science and Technology Studies (CWTS), Leiden University. He also holds leadership roles including Co-chair of the Research on Research Institute (RoRI), President of ASAPbio, and Editor-in-Chief of MetaROR (MetaResearch Open Review). His work focuses on improving scientific communication, research assessment, and open science practices.

• Organizations: CWTS (Leiden University), RoRI, ASAPbio, MetaROR

Waltman's research interests center on quantitative analysis of scientific output, with specific emphasis on open science, research evaluation reform, and innovative publishing models. His recent article on spelling errors in biomedical abstracts (2024) demonstrates methodological rigor in text mining applications and highlights concerns about publication quality standards. Other projects explore science mapping through document data networks and metadata enrichment initiatives like the COMET Model.

As a prominent advocate for research communication transformation, Waltman actively engages in policy development through initiatives like the Barcelona Declaration and NIH publishing cost regulations. He supports innovative platforms such as MetaROR that implement open peer review frameworks.

Key collaborations:

• Developing Dutch open science monitoring framework with Dialogic
• Co-authoring DORA publications about publishing ecosystem challenges
• Co-chairing international RoRI with colleagues at eLife, Wellcome, and CRUK