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Validation of the Astro dataset clustering solutions with external data

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  • Paul Donner

    (Deutsches Zentrum für Hochschul- und Wissenschaftsforschung)

Abstract

We conduct an independent cluster validation study on published clustering solutions of a research testbed corpus, the Astro dataset of publication records from astronomy and astrophysics. We extend the dataset by collecting external validation data serving as proxies for the latent structure of the corpus. Specifically, we collect (1) grant funding information related to the publications, (2) data on topical special issues, (3) on specific journals’ internal topic classifications and (4) usage data from the main online bibliographic database of the discipline. The latter three types of data are newly introduced for the purpose of clustering validation and the rationale for using them for this task is set out. We find that one solution based on the global citation network achieves better results than the competitors across three validation data sources but that another solution based on bibliographic coupling performs best on the special issues data.

Suggested Citation

  • Paul Donner, 2021. "Validation of the Astro dataset clustering solutions with external data," Scientometrics, Springer;Akadémiai Kiadó, vol. 126(2), pages 1619-1645, February.
    • Handle: RePEc:spr:scient:v:126:y:2021:i:2:d:10.1007_s11192-020-03780-3
    DOI: 10.1007/s11192-020-03780-3
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