8 citations · 14 across the 4 of their papers we have counts for
4 papers · 1 filter
On the correlation between bibliometric indicators and peer review: Reply to Opthof and Leydesdorff
Ludo Waltman, Nees Jan van Eck, Thed N. van Leeuwen +2
Opthof and Leydesdorff [arXiv:1102.2569] reanalyze data reported by Van Raan [arXiv:physics/0511206] and conclude that there is no significant correlation between on the one hand a…
A recursive field-normalized bibliometric performance indicator: An application to the field of library and information science
Ludo Waltman, Erjia Yan, Nees Jan van Eck
Two commonly used ideas in the development of citation-based research performance indicators are the idea of normalizing citation counts based on a field classification scheme and…
Globalisation of science in kilometres
Ludo Waltman, Robert J. W. Tijssen, Nees Jan van Eck
The ongoing globalisation of science has undisputedly a major impact on how and where scientific research is being conducted nowadays. Yet, the big picture remains blurred. It is l…
The detection of "hot regions" in the geography of science: A visualization approach by using density maps
Lutz Bornmann, Ludo Waltman
Spatial scientometrics has attracted a lot of attention in the very recent past. The visualization methods (density maps) presented in this paper allow for an analysis revealing re…