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Welcome to the homepage of
Ludo Waltman
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- August 25, 2010. The paper Towards a new crown indicator: Some theoretical considerations by Ludo Waltman, Nees Jan van Eck, Thed van Leeuwen, Martijn Visser, and Anthony van Raan has been accepted for publication in the Journal of Informetrics.
- July 16, 2010. The paper A comparison of two techniques for bibliometric mapping: Multidimensional scaling and VOS by Nees Jan van Eck, Ludo Waltman, Rommert Dekker, and Jan van den Berg has been accepted for publication in the Journal of the American Society for Information Science and Technology.
- July 15, 2010. The paper A unified approach to mapping and clustering of bibliometric networks by Ludo Waltman, Nees Jan van Eck, and Ed Noyons has been accepted for publication in the Journal of Informetrics.
- June 15, 2010. VOSviewer version 1.2.1 has been released and is available at www.vosviewer.com.
- June 15, 2010. The paper The relation between Eigenfactor, audience factor, and influence weight by Ludo Waltman and Nees Jan van Eck has been published in volume 61, issue 7 of the Journal of the American Society for Information Science and Technology.
- June 13, 2010. The paper Software survey: VOSviewer, a computer program for bibliometric mapping by Nees Jan van Eck and Ludo Waltman has been published in volume 84, issue 2 of Scientometrics.
Older news is available here.
I am doing research in two different fields:
- Economics. My economic research is concerned with the theoretical analysis of models of boundedly rational behavior. I am working on a PhD thesis on this topic (supervised by prof. Rommert Dekker and prof. Uzay Kaymak).
- Bibliometrics. My bibliometric research focuses on two topics in particular:
I am a member of the editorial board of Scientometrics.
In most of my research I am working closely together with Nees Jan van Eck.
A list of my publications is available here.