Challenges to the validity of topic reconstruction

Matthias Held (), Grit Laudel () and Jochen Gläser ()
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Matthias Held: TU Berlin
Grit Laudel: TU Berlin
Jochen Gläser: TU Berlin

Scientometrics, 2021, vol. 126, issue 5, No 37, 4536 pages

Abstract: Abstract In this paper we utilize an opportunity to construct ground truths for topics in the field of atomic, molecular and optical physics. Our research questions in this paper focus on (i) how to construct a ground truth for topics and (ii) the suitability of common algorithms applied to bibliometric networks to reconstruct these topics. We use the ground truths to test two data models (direct citation and bibliographic coupling) with two algorithms (the Leiden algorithm and the Infomap algorithm). Our results are discomforting: none of the four combinations leads to a consistent reconstruction of the ground truths. No combination of data model and algorithm simultaneously reconstructs all micro-level topics at any resolution level. Meso-level topics are not reconstructed at all. This suggests (a) that we are currently unable to predict which combination of data model, algorithm and parameter setting will adequately reconstruct which (types of) topics, and (b) that a combination of several data models, algorithms and parameter settings appears to be necessary to reconstruct all or most topics in a set of papers.

Keywords: Mapping; Topic reconstruction; Research trails; Validity; Infomap; Network clustering (search for similar items in EconPapers)
Date: 2021
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Citations: View citations in EconPapers (1)

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DOI: 10.1007/s11192-021-03920-3

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