25 citations · 65 across the 10 of their papers we have counts for
10 papers
The three-step workflow: a pragmatic approach to allocating academic hospitals' affiliations for bibliometric purposes
Andrea Reyes Elizondo, Clara Calero-Medina, Martijn S. Visser
This paper presents a method for classifying the varying degrees of interdependency between academic hospitals and universities in the context of the Leiden Ranking. A key question…
Large-scale comparison of bibliographic data sources: Scopus, Web of Science, Dimensions, Crossref, and Microsoft Academic
Martijn Visser, Nees Jan van Eck, Ludo Waltman
We present a large-scale comparison of five multidisciplinary bibliographic data sources: Scopus, Web of Science, Dimensions, Crossref, and Microsoft Academic. The comparison consi…
The elephant in the room: The problem of quantifying productivity in evaluative scientometrics
Ludo Waltman, Nees Jan van Eck, Martijn Visser +1
In a critical and provocative paper, Abramo and D'Angelo claim that commonly used scientometric indicators such as the mean normalized citation score (MNCS) are completely inapprop…
Some modifications to the SNIP journal impact indicator
Ludo Waltman, Nees Jan van Eck, Thed N. van Leeuwen +1
The SNIP (source normalized impact per paper) indicator is an indicator of the citation impact of scientific journals. The indicator, introduced by Henk Moed in 2010, is included i…
The Leiden Ranking 2011/2012: Data collection, indicators, and interpretation
Ludo Waltman, Clara Calero-Medina, Joost Kosten +7
The Leiden Ranking 2011/2012 is a ranking of universities based on bibliometric indicators of publication output, citation impact, and scientific collaboration. The ranking include…
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…