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Visualizing science based on open data sources

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Presentation at the Workshop on Open Citations, University of Bologna, Bologna, Italy, September 4, 2018.

I will demonstrate the use of the VOSviewer software (www.vosviewer.com), of which I am one of the developers, for creating bibliometric visualizations of science based on openly available bibliographic data sources. Both the use of Crossref data and the use of data from the OpenCitations Corpus will be demonstrated. In addition, I will show how data from Dimensions can be used. The possibilities and limitations of the currently available open data sources will be discussed, also in comparison with more established data sources such as Web of Science and Scopus. Finally, I will provide my perspective on future developments, focusing especially on the integration of open data sources and visual analysis tools.

Published in: Science
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Visualizing science based on open data sources

  1. 1. Visualizing science based on open data sources Nees Jan van Eck and Ludo Waltman Centre for Science and Technology Studies (CWTS), Leiden University Workshop on Open Citations University of Bologna, Bologna, Italy September 4, 2018
  2. 2. VOSviewer 1
  3. 3. Users of VOSviewer • Researchers • Research institutions • Research funders • Scientific publishers • Industry 2
  4. 4. Data sources supported by VOSviewer 3
  5. 5. Bibliometric networks 4 WoS Scopus Dimensions PubMed Crossref Citation network of pubs / journals / authors / orgs / countries Co-authorship network of authors / orgs / countries Co-citation network of pubs / journals / authors / orgs / countries Co-occurrence network of keywords / terms Bibliographic coupling network of pubs / journals / authors Bibliographic data source
  6. 6. Types of networks supported by each data source 5 Co-authorship Co- occurrence Citation Bibliographic coupling Co-citation Web of Science      Scopus      Dimensions      PubMed      Crossref     
  7. 7. Journal citation network based on openly available Crossref data 6
  8. 8. Demonstration • Journals: – Journal of Informetrics (Elsevier) – Scientometrics (Springer Nature) • Time period: 2007-2016 • Data sources: – Dimensions – Crossref – OCC (OpenCitations Corpus) – COCI (OpenCitations Index of Crossref open DOI-to-DOI references) 7
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  13. 13. Coverage of publications and citations for each data source 12
  14. 14. Wish list for improving open data sources • Expanding coverage of publications (OCC) • Opening citations (Crossref) • Opening other metadata, e.g. abstracts (Dimensions, Crossref, OCC) • Improving completeness and standardization of metadata (Crossref) • Speeding up APIs 13
  15. 15. Thank you for your attention! 14

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