Google Scholar for Bibliometrics
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Google Scholar for Bibliometrics

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Google Scholar: Can it Really Be Used for Bibliometrics? by Isobel Stark and Michael Whitton, University of Southampton. Presentation at the Research Evaluation: Is It Our Business? The Role of ...

Google Scholar: Can it Really Be Used for Bibliometrics? by Isobel Stark and Michael Whitton, University of Southampton. Presentation at the Research Evaluation: Is It Our Business? The Role of Librarians in the Brave New World of Research Evaluation 29 June 2011, University of Birmingham, Edgbaston Campus.

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  • Metrics are generally a higher number - Bibliometrics calculated on GS are generally higher than those calculated on (eg.) WoS, but this varies by discipline
  • Google Scholar *was* designed for bibliometrics, just not necessarily for g-index and h-index (it does citation counting
  • Quadsearch http://quadsearch.csd.auth.gr/index.php?lan=1&s=2 (i.e. the ‘Science’ search) Scholar H-index Calculator https://addons.mozilla.org/en-US/firefox/addon/45283 (add-on for the Mozilla Firefox browser, adds metrics to the standard Google Scholar site, easy to use but only calculates for the articles on the current page, a maximum of 100) Scholarometer http://scholarometer.indiana.edu/ (add-on for the Mozilla Firefox and Google Chrome browsers – appears as a sidebar when installed) Publish or Perish http://www.harzing.com/pop.htm (application that calculates a wide variety of metrics
  • CVs – h-index increasingly mandated for Performance/Personal Development Reviews
  • BAR-ILAN, J. 2008. Which h-index? — A comparison of WoS, Scopus and Google Scholar. Scientometrics , 74, 257-271. JACSO, P. 2008. The pros and cons of computing the h-index using Google Scholar. Online Information Review, 32 , 437-452.
  • FRANCESCHET, M. 2009. A comparison of bibliometric indicators for computer science scholars and journals on Web of Science and Google Scholar. Scientometrics , 83, 243-258. Academics at University of Udine, high impact computer science journals LEVINE-CLARK, M. & GIL, E. 2009. A comparative analysis of social sciences citation tools. Online Information Review, 33, 986-996. Highly downloaded articles from Elsevier social sciences journals
  • LEE, J., KRAUS, K. L. & COULDWELL, W. T. 2009. Use of thehindex in neurosurgery. Journal of Neurosurgery, 111 , 387-392. Research outputs from 3 UK Business schools MINGERS, J. & LIPITAKIS, E. A. E. C. G. 2010. Counting the citations: a comparison of Web of Science and Google Scholar in the field of business and management. Scientometrics, 85 , 613-625. Random sample of academic neurosurgeons
  • Library Research Guides www.soton.ac.uk/library/research/bibliometrics Deskside Training 1-2-1 training for staff & research postgraduates Planned session for research postgraduates Delivered through the Graduate School training programme to compliment our Open Access, e-theses, Academic Copyright and Current Awareness sessions
  • Google Scholar’s subject classification is variable – fails to correctly classify some, thus reducing recall and therefore calculated h-index

Google Scholar for Bibliometrics Google Scholar for Bibliometrics Presentation Transcript

  • Google Scholar Can it really be used for bibliometrics?
    • Isobel Stark & Michael Whitton June 2011
  • Google Scholar
    • Historical background?
      • Google Scholar released (in beta) in 2004
      • Not the first freely available citation database (CiteSeer, Scirus, etc)
      • Not subject specific
    • Is it a viable alternative to ‘traditional’ citation databases such as Web of Science?
  • Pros of Google Scholar
    • Easy to access and free
    • Indexes a wide range of articles
      • Especially Law, Humanities, Social Sciences
    • Can find a wider range of metrics
    • Metrics are generally a higher number
  • Cons of Google Scholar
    • Questionable data
    • Lack of de-duplication
    • Gaps
    • Relies on algorithms
    • Not designed for popular bibliometric measures
      • Requires add-ons to calculate h -index etc.
  • Recommended services ( h -index on GS)
    • Quadsearch (Any browser)
    • Scholar H -index Calculator (Mozilla Firefox)
    • Scholarometer (Mozilla Firefox/Google Chrome)
    • Publish or Perish (Separate Application)
  •  
  •  
  •  
  •  
  • How our researchers use it
    • CVs and bids for funding
    • Preferred by Medicine over InCites
    • Factsheet for “Finding your h -index in Google Scholar” is very popular
      • 6,764 visits in the last year
      • To compare WoS h -Index guide is 1,559 and Impact Factors 1,045
  • From the literature …
    • Bar-Illan (2008) – Israeli highly cited researchers
      • Significant differences from WoS and Scopus
      • Metrics can be higher (computer science), similar or lower (physics)
    • Jasco (2008)
      • Problems of missing & wrong authors
      • Prolific authors F Password & M Profile
      • Specific problems often resolved
  • Subject specific studies
    • Franceshet (2009) – Computer Science
      • Google Scholar metrics are much higher
      • Significant correlation (but varies by type of metric)
      • Importance of proceedings
    • Levine-Clark (2009) – Social Sciences
      • Significant value of using Google Scholar in addition to WoS
      • Significant value in journals not indexed by WoS & coverage of books
  • Subject specific studies …
    • Lee (2009) – Neurosurgery
      • Significant correlation between Google Scholar and Scopus
    • Mingers (2010) – Business & Management
      • Lack of reliability and transparency of Google Scholar, but potential for a more comprehensive and less subject dependant analysis.
  • The h -index: WoS vs Google Scholar
    • Prof. Nigel Shadbolt (Computer Science)
      • WoS: 16
      • Google Scholar: 23
    • Dr Simon Coles (Chemistry)
      • WoS: 36
      • Google Scholar 22
  • The h -index: WoS vs Google Scholar …
    • Prof. Sally Brailsford (Management)
      • WoS: 9
      • Google Scholar: 13
    • Prof. Christian Ottensmeier (Medicine)
      • WoS: 19
      • Google Scholar: 19
  • The h -index: WoS vs Google Scholar …
    • Prof. Jane Falkingham (Social Sciences)
      • WoS: 7
      • Google Scholar: 23
    • Dr Joanna Sofaer (Archaeology)
      • WoS: 2
      • Google Scholar: 9
  • Supporting bibliometrics
    • Library research guides
      • www.soton.ac.uk/library/research/bibliometrics
    • Deskside training
      • 1-2-1 training for staff & research postgraduates
    • Planned session for research postgraduates
      • delivered through the Graduate School training programme
  • Conclusions
    • Some variation by subject
    • Significant issues with quality of the data
    • Can be useful to use in addition to Web of Science and/or Scopus
  • References
    • BAR-ILAN, J. 2008. Which h-index? — A comparison of WoS, Scopus and Google Scholar. Scientometrics , 74, 257-271.
    • FRANCESCHET, M. 2009. A comparison of bibliometric indicators for computer science scholars and journals on Web of Science and Google Scholar. Scientometrics , 83, 243-258.
    • JACSO, P. 2008. The pros and cons of computing the h-index using Google Scholar. Online Information Review, 32 , 437-452.
  • References …
    • LEVINE-CLARK, M. & GIL, E. 2009. A comparative analysis of social sciences citation tools. Online Information Review, 33 , 986-996.
    • LEE, J., KRAUS, K. L. & COULDWELL, W. T. 2009. Use of the h index in neurosurgery. Journal of Neurosurgery, 111 , 387-392.
    • MINGERS, J. & LIPITAKIS, E. A. E. C. G. 2010. Counting the citations: a comparison of Web of Science and Google Scholar in the field of business and management. Scientometrics, 85 , 613-625.