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Including cited non-source items in a large-scale map of science: What difference does it make?

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  • Boyack, Kevin W.
  • Klavans, Richard

Abstract

Cited non-source documents such as articles from regional journals, conference papers, books and book chapters, working papers and reports have begun to attract more attention in the literature. Most of this attention has been directed at understanding the effects of including non-source items in research evaluation. In contrast, little work has been done to examine the effects of including non-source items on science maps and on the structure of science as reflected by those maps. In this study we compare two direct citation maps of a 16-year set of Scopus documents – one that includes only source documents, and one that includes non-source documents along with the source documents. In addition to more than doubling the contents of the map, from 19M to 43M documents, the inclusion of non-source items strongly augments the social sciences relative to the natural sciences and medicine and makes their position in the map more central. Books are also found to play a significant role in the map, and are much more highly cited on average than articles.

Suggested Citation

  • Boyack, Kevin W. & Klavans, Richard, 2014. "Including cited non-source items in a large-scale map of science: What difference does it make?," Journal of Informetrics, Elsevier, vol. 8(3), pages 569-580.
  • Handle: RePEc:eee:infome:v:8:y:2014:i:3:p:569-580
    DOI: 10.1016/j.joi.2014.04.001
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    References listed on IDEAS

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    1. Franceschini, Fiorenzo & Maisano, Domenico, 2011. "Structured evaluation of the scientific output of academic research groups by recent h-based indicators," Journal of Informetrics, Elsevier, vol. 5(1), pages 64-74.
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    Cited by:

    1. Raf Guns & Linda Sīle & Joshua Eykens & Frederik T. Verleysen & Tim C. E. Engels, 2018. "A comparison of cognitive and organizational classification of publications in the social sciences and humanities," Scientometrics, Springer;Akadémiai Kiadó, vol. 116(2), pages 1093-1111, August.
    2. Sjögårde, Peter & Ahlgren, Per, 2018. "Granularity of algorithmically constructed publication-level classifications of research publications: Identification of topics," Journal of Informetrics, Elsevier, vol. 12(1), pages 133-152.
    3. Kevin W. Boyack, 2017. "Investigating the effect of global data on topic detection," Scientometrics, Springer;Akadémiai Kiadó, vol. 111(2), pages 999-1015, May.
    4. Shu, Fei & Julien, Charles-Antoine & Zhang, Lin & Qiu, Junping & Zhang, Jing & Larivière, Vincent, 2019. "Comparing journal and paper level classifications of science," Journal of Informetrics, Elsevier, vol. 13(1), pages 202-225.
    5. Sun, Xiaoling & Ding, Kun & Lin, Yuan, 2016. "Mapping the evolution of scientific fields based on cross-field authors," Journal of Informetrics, Elsevier, vol. 10(3), pages 750-761.
    6. Austin J Parish & Kevin W Boyack & John P A Ioannidis, 2018. "Dynamics of co-authorship and productivity across different fields of scientific research," PLOS ONE, Public Library of Science, vol. 13(1), pages 1-12, January.
    7. Nees Jan Eck & Ludo Waltman, 2017. "Citation-based clustering of publications using CitNetExplorer and VOSviewer," Scientometrics, Springer;Akadémiai Kiadó, vol. 111(2), pages 1053-1070, May.
    8. R. Fileto Maciel & P. Saskia Bayerl & Marta Macedo Kerr Pinheiro, 2019. "Technical research innovations of the US national security system," Scientometrics, Springer;Akadémiai Kiadó, vol. 120(2), pages 539-565, August.
    9. Kevin W. Boyack, 2017. "Thesaurus-based methods for mapping contents of publication sets," Scientometrics, Springer;Akadémiai Kiadó, vol. 111(2), pages 1141-1155, May.
    10. Eloisa Viggiani & Luciana Calabró, 2020. "Does faculty disciplinary background play a role in the publication pattern of an interdisciplinary research area? The case of science education in Brazil," Scientometrics, Springer;Akadémiai Kiadó, vol. 125(2), pages 893-908, November.
    11. Eloisa Viggiani & Luciana Calabró, 0. "Does faculty disciplinary background play a role in the publication pattern of an interdisciplinary research area? The case of science education in Brazil," Scientometrics, Springer;Akadémiai Kiadó, vol. 0, pages 1-16.

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