6 papers
Convergent validity of several indicators measuring disruptiveness with milestone assignments to physics papers by experts
Lutz Bornmann, Alexander Tekles
This study focuses on a recently introduced type of indicator measuring disruptiveness in science. Disruptive research diverges from current lines of research by opening up new lin…
Do disruption index indicators measure what they propose to measure? The comparison of several indicator variants with assessments by peers
Lutz Bornmann, Sitaram Devarakonda, Alexander Tekles +1
Recently, Wu, Wang, and Evans (2019) and Bu, Waltman, and Huang (2019) proposed a new family of indicators, which measure whether a scientific publication is disruptive to a field…
Do we measure novelty when we analyze unusual combinations of cited references? A validation study of bibliometric novelty indicators based on F1000Prime data
Lutz Bornmann, Alexander Tekles, Helena H. Zhang +1
Lee, Walsh, and Wang (2015) - based on Uzzi, Mukherjee, Stringer, and Jones (2013) - and Wang, Veugelers, and Stephan (2017) proposed scores based on cited references (cited journa…
Does the index reinforce the Matthew effect in science? Agent-based simulations using Stata and R
Lutz Bornmann, Christian Ganser, Alexander Tekles +1
Recently, Hirsch (2019a) proposed a new variant of the h index called the index. He formulated as follows: "we define the index of a scientist as the number of papers i…
Author name disambiguation of bibliometric data: A comparison of several unsupervised approaches
Alexander Tekles, Lutz Bornmann
Adequately disambiguating author names in bibliometric databases is a precondition for conducting reliable analyses at the author level. In the case of bibliometric studies that in…
How well does I3 perform for impact measurement compared to other bibliometric indicators? The convergent validity of several (field-normalized) indicators
Lutz Bornmann, Alexander Tekles, Loet Leydesdorff
Recently, the integrated impact indicator (I3) indicator was introduced where citations are weighted in accordance with the percentile rank class of each publication in a set of pu…