January 24, 2022. VOSviewer version 1.6.18 has been released and is available for download. This new version of VOSviewer offers improved support for creating maps based on OpenAlex, Europe PMC, Semantic Scholar, and Crossref data.
December 24, 2021. The paper Meta-Research: Investigating disagreement in the scientific literature by Wout Lamers, Kevin Boyack, Vincent Larivière, Cassidy Sugimoto, Nees Jan van Eck, Ludo Waltman, and Dakota Murray has been published in volume 10 of eLife.
October 21, 2021. The slides of the workshop that I gave today at the VOGIN-IP-lezing in Amsterdam are available here.
August 4, 2021. VOSviewer Online has been integrated in Digital Science's Dimensions platform, making it very easy for Dimensions users to create VOSviewer visualizations of co-authorship networks and citation networks. More information is available in this blog post.
July 30, 2021. The paper Measuring Disagreement in Science by Wout Lamers, Kevin Boyack, Vincent Larivière, Cassidy Sugimoto, Nees Jan van Eck, Ludo Waltman, and Dakota Murray has been published in arXiv.
July 22, 2021. VOSviewer version 1.6.17 has been released and is available for download. This new version of VOSviewer offers support for sharing maps online and for creating maps based on files exported from the Lens. More information can be found in this blog post.
July 16, 2021. VOSviewer Online has been released! VOSviewer Online is a web-based version of VOSviewer. It runs in a web browser and can be used to share interactive visualizations and to embed these visualizations in online platforms. More information can be found in this blog post.
July 12, 2021. The slides of my presentations at the 18th International Conference on Scientometrics & Informetrics are available here.
July 8, 2021. The CWTS Leiden Ranking 2021 has been published. The number of universities included in the ranking has increased from 1176 to 1225, and the number of countries with at least one university in the ranking has increased from 65 to 69. More information is available here.
April 8, 2021. The paper Large-scale comparison of bibliographic data sources: Scopus, Web of Science, Dimensions, Crossref, and Microsoft Academic by Martijn Visser, Nees Jan van Eck, and Ludo Waltman has been published in volume 2, issue 1 of Quantitative Science Studies.
February 8, 2021. I am very honored that I received the award for Best EGSH Teacher 2020. More information about the EGSH PhD Excellence Awards can be found here.
January 7, 2021. The paper A scientometric overview of CORD-19 by Giovanni Colavizza, Rodrigo Costas, Vincent Traag, Nees Jan van Eck, Thed van Leeuwen, and Ludo Waltman has been published in volume 16, issue 1 of PLOS ONE.
I am doing research in the field of bibliometrics and scientometrics. My research focuses primarily on the development of visualization tools and algorithms, mainly for analyzing the structure and development of science. I am the main developer of VOSviewer and CitNetExplorer, two well-known software tools for visualizing bibliometric data. The VOSviewer software is frequently used in bibliometric studies. More than 1500 publications have appeared in international scientific journals in which the software is employed. In addition to my work on bibliometric visualization, I also focus on the study of bibliometric data sources and the analysis of the full text of scientific publications. In most of my research I am working closely together with Ludo Waltman.
