Abstract
In order to measure the degree to which Google Scholar can compete with bibliographical databases, search results from this database is compared with Thomson’s ISI WoS (Institute for Scientific Information, Web of Science). For earth science literature 85% of documents indexed by ISI WoS were recalled by Google Scholar. The rank of records displayed in Google Scholar and ISI WoS, is compared by means of Spearman’s footrule. For impact measures the h-index is investigated. Similarities in measures were significant for the two sources.
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Notes
GeoRef (No Date) is produced by the American Geological Institute and provides access to the geoscience literature of the world
Scopus (No Date) is developed by Elsevier and claims to be “the largest abstract and citation database of research literature and quality web sources”. References go back to 1996.
References
Bar-Ilan, J. (2008). Which h-index?—A comparison of WoS, Scopus and Google Scholar. Scientometrics, 74(2), 257–271.
Bar-Ilan, J., Levene, M., & Lin, A. (2007). Some measures for comparing citation databases. Journal of Informetrics, 1(1), 26–34.
Belew, R. K. (2005). Scientific impact quantity and quality: Analysis of two sources of bibliographic data. Journal. Retrieved from http://arxiv.org/abs/cs/0504036.
Garfield, E. (1990). How ISI selects journals for coverage—quantitative and qualitative considerations. Current Contents, 22, 5–13.
GeoRef. The American Geological Institute. (No Date). About GeoRef. Retrieved July 11, 2008, from http://www.agiweb.org/georef/about/.
Google Scholar. (No Date). About Google Scholar. Retrieved July 11, 2008, from http://scholar.google.com/intl/en/scholar/about.html.
Hirsch, J. E. (2005). An index to quantify an individual’s scientific research output. Proceedings of the National Academy of Sciences, 102(46), 16569–16572.
ISI WoS. Thomson Scientific. (No Date). Web of Science. Retrieved July 11, 2008, from http://scientific.thomsonreuters.com/products/wos/.
Jacsó, P. (2006). Deflated, inflated and phantom citation counts. Online Information Review, 30(3), 297–309.
Meho, L. I., & Yang, K. (2007). Impact of data sources on citation counts and rankings of LIS faculty: Web of Science versus Scopus and Google Scholar. Journal of the American Society for Information Science and Technology, 58(13), 2105–2125.
Neuhaus, C., Neuhaus, E., Asher, A., & Wrede, C. (2006). The depth and breadth of Google Scholar: An empirical study. Portal: Libraries and the Academy, 6(2), 127–141.
Noruzi, A. (2005). Google Scholar: The new generation of citation indexes. Libri, 55, 170–180.
Pauly, D., & Stergiou, K. I. (2005). Equivalence of results from two citation analyses: Thomson ISI’s citation index and Google’s scholar service. Ethics in Science and Environmental Politics, 2005, 33–35.
Redner, S. (1998). How popular is your paper? An empirical study of the citation distribution. The European Physical Journal B-Condensed Matter, 4(2), 131–134.
Scopus. Elsevier. (No Date). Scopus Info—Scopus in Detail—What does it cover? Retrieved July 11, 2008, from http://info.scopus.com/detail/what/.
Vanclay, J. K. (2007). On the robustness of the h-index. Journal of the American Society for Information Science and Technology, 58(10), 1547–1550.
Walters, W. H. (2007). Google Scholar coverage of a multidisciplinary field. Information Processing and Management, 43(4), 1121–1132.
Acknowledgements
I am grateful for the programming help I received from Knut Barthel at the Geophysical Institute (University of Bergen), and for fruitful discussions with Hege Folkestad my colleague at the Science Library.
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Mikki, S. Comparing Google Scholar and ISI Web of Science for Earth Sciences. Scientometrics 82, 321–331 (2010). https://doi.org/10.1007/s11192-009-0038-6
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DOI: https://doi.org/10.1007/s11192-009-0038-6