On this page, some supplementary material is provided for the paper A unified approach to mapping and clustering of bibliometric networks by Ludo Waltman, Nees Jan van Eck, and Ed Noyons (paper, preprint). For additional information, please contact Ludo Waltman.
The figure below shows our combined mapping and clustering of the 1242 most frequently cited publications that appeared in the field of information science in the period 1999-2008. Publications are labeled with the name of the first author. Click on the figure to examine the mapping and the clustering in full detail using the VOSviewer software. In order to run the VOSviewer software, version 6 of Java needs to be installed on your system. The clustering of the publications is also available in a Microsoft Excel file.
To try out our unified approach to mapping and clustering, there are two possibilities:
- Use our VOSviewer software. VOSviewer is a freely available computer program that runs on most hardware and operating system platforms. The program offers an easy-to-use graphical user interface. Algorithms that implement our unified approach to mapping and clustering have been incorporated in the program. In order to run the program, version 6 of Java needs to be installed on your system.
- Use our VOS mapping and clustering software. The software has a simple command-line interface. We have available both stand-alone software and software that runs in MATLAB. The software is open source and has been written partly in the C language and partly in the MATLAB language.