Scientometrics

, Volume 74, Issue 2, pp 257–271 | Cite as

Which h-index? — A comparison of WoS, Scopus and Google Scholar

Special-Session Papers Presented at the 9th International Conference on Science and Technology Indicators
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Abstract

This paper compares the h-indices of a list of highly-cited Israeli researchers based on citations counts retrieved from the Web of Science, Scopus and Google Scholar respectively. In several case the results obtained through Google Scholar are considerably different from the results based on the Web of Science and Scopus. Data cleansing is discussed extensively.

Keywords

Citation Index Citation Count Citation Database Technology Indicator Hirsch Index 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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References

  1. Bakkalbasi, N., Bauer, K., Glover, J., Wang, L. (2006), Three options for citation tracking: Google Scholar, Scopus and Web of Science. Biomedical Digital Libraries, 3: 7. Retrieved November 4, 2006, from http://www.bio-diglib.com/content/3/1/7 CrossRefGoogle Scholar
  2. Banks, M. G. (2006), An extension of the Hirsch index: Indexing scientific topics and compounds. Scientometrics, 69(1): 161–168.CrossRefGoogle Scholar
  3. Bar-Ilan, J. (2005), Expectations versus reality — Search engine features needed for Web research at mid 2005. Cybermetrics, 9, paper 2. Retrieved November 4, 2006, from http://www.cindoc.csic.es/cybermetrics/articles/v9i1p2.html
  4. Bar-Ilan, J. (2006), An ego-centric citation analysis of the works of Michael O. Rabin based on multiple citation indexes. Information Processing and Management, 42(6): 1553–1566.CrossRefGoogle Scholar
  5. Bar-Ilan, J. (2006b), H-index for Price medalists revisited. ISSI Newsletter, 2(1): 3–5.Google Scholar
  6. Bar-Ilan, J., Levene, M., Lin, A. (2007), Some measures for comparing citation databases. Journal of Informetrics, 1(1): 26–34.CrossRefGoogle Scholar
  7. Batista, P. D., Campiteli, M. G., Kinouchi, O., Martinez, A. S. (2006), Is it possible to compare researchers with different scientific interests? Scientometrics, 68(1): 179–189.CrossRefGoogle Scholar
  8. Bauer, K., Bakkalbasi, N. (2005), An examination of citation counts in a new scholarly communication environment. D-Lib Magazine, 11(9). Retrieved February 23, 2006, from http://www.dlib.org/dlib/september05/bauer/09bauer.html
  9. Belew, R. K. (2005), Scientific impact quality and quantity: Analysis of two sources of bibliographic data. Retrieved November 4, 2006, from http://arxiv.org/abs/cs.IR/0504036
  10. Bornmann, L., Daniel, H. (2005), Does the h-index for ranking of scientists really work? Scientometrics, 65: 391–392.CrossRefGoogle Scholar
  11. Braun, T., Glanzel, W., Schubert, A. (2005), A Hirsch-type index for journals. The Scientist, 19(22): 8.Google Scholar
  12. Braun, T., Glanzel, W., Schubert, A. (2006), A Hirsch-type index for journals. Scientometrics, 69(1): 169–173.CrossRefGoogle Scholar
  13. Burrell, Q. L. (2006), Hirsch’s h-index: a preliminary stochastic model. In: Book of Abstracts, 9th International Science & Technology Indicators Conference, Leuven, Belgium, 26–28.Google Scholar
  14. Burnham J. F. (2006), Scopus database: A review. Biomedical Digital Libraries, 3(1). Retrieved November 4, 2006, from http://www.bio-diglib.com/content/3/1/1
  15. Butler, L., McAllister, I. (2006), The Hirsch index: Is it applicable to the Social Sciences? In: Book of Abstracts, 9th International Science & Technology Indicators Conference, Leuven, Belgium, 31–32.Google Scholar
  16. Costas, R., Bordons, M. (2006), H-index: Advantages, limitations and its relation with other bibliometric indicators at the micro level. In: Book of Abstracts, 9th International Science & Technology Indicators Conference, Leuven, Belgium, 189–191.Google Scholar
  17. Cronin, B., Meho, L. (2006), Using the h-index to rank influential information scientists. Journal of the American Society for Information Science and Technology, 57(9): 1275–1278.CrossRefGoogle Scholar
  18. Deis, L. F., Goodman, D. (2005), Web of Science (2004 Version) and Scopus. The Charleston Advisor 6(3). Retrieved November 4, 2006, from http://www.charlestonco.com/comp.cfm?id=43
  19. Egghe, L. (2006a), Dynamic h-index: The Hirsch Index in Function of Time. Preprint. Retrieved November 4, 2006, from http://doclib.luc.ac.be/dspace/bitstream/1942/980/1/dynamic+h.pdf
  20. Egghe, L. (2006b), Theory and practise of the g-index. Scientometrics, 69(1): 131–152.CrossRefMathSciNetGoogle Scholar
  21. Egghe, L., Rousseau, R. (2006), An informetric model for the Hirsch-index. Scientometrics, 69(1): 1221–1129.Google Scholar
  22. Gardner, S., Eng, S. (2005), Gaga over Google? Scholar in the Social Sciences. Library Hi-Tech News, 22(8): 42–45.CrossRefGoogle Scholar
  23. Garfield, E. (1963), Science Citation Index. Science Citation Index 1961, volume 1, v–xvi. Retrieved October 31, 2006, from http://garfield.library.upenn.edu/papers/80.pdf Google Scholar
  24. Giles, J. (2005), Start your engines. Nature News, 554–555.Google Scholar
  25. Glänzel, W. (2006), On the h-index — A mathematical approach to a new measure of publication activity and citation impact. Scientometrics, 67(2): 315–321.CrossRefGoogle Scholar
  26. Glänzel W., Persson, O. (2005), H-index for Price medialists. ISSI Newsletter, 1(4): 15–18.Google Scholar
  27. Google Scholar (2005), Support for Scholarly Publishers. Retrieved October 31, 2006, from http://scholar.google.com/intl/en/scholar/publishers.html
  28. Hirsch, J. E. (2005a), An index to quantify an individual’s scientific research output. Retrieved November 4, 2006, from http://arxiv.org/abs/physics/0508025
  29. Hirsch, J. E. (2005b), An index to quantify an individual’s scientific research output. PNAS, 102(46): 16569–16572.CrossRefGoogle Scholar
  30. Iglesias, J. E., Pecharroman, C. (2006), Scaling the h-index for Different Scientific ISI Fields. Preprint. Retrieved November 4, 2006, from http://arxiv.org/ftp/physics/papers/0607/0607224.pdf
  31. ISI HighlyCited.com (no date_a), About HighlyCited.com. Retrieved November 4, 2006, from http://hcr3.isiknowledge.com/popup.cgi?name=hccom
  32. ISI HighlyCited.com (no date_b), How Do We Identify Highly Cited Researchers? Retrieved November 4, 2006, from http://hcr3.isiknowledge.com/isi_copy/howweidentify.htm
  33. Jacso, P. (2004), Scopus. Peter’s Digital Reference Shelf, September 2004. Retrieved November 4, 2006, from http://www.galegroup.com/servlet/HTMLFileServlet?imprint=9999&region=7&fileName=reference/archive/200409/scopus.html
  34. Jacso, P. (2005a), As we may search — Comparison of major features of Web of Science, Scopus and Google Scholar citation-based and citation-enhanced databases. Current Science, 89(9): 1537–1547.Google Scholar
  35. Jacso, P. (2005b), Visualizing overlap and rank differences among web-wide search engines. Online Information Review, 29(5): 554–560.CrossRefGoogle Scholar
  36. Jacso, P. (2006), Deflated, inflated and phantom citation counts. Online Information Review, 30(3): 297–309.CrossRefGoogle Scholar
  37. Kelly, C. D., Jennions, M. D. (2006), The h-index and career assessment by numbers. TRENDS in Ecology and Evolution, 21(4): 167–170.CrossRefGoogle Scholar
  38. Kousha, K., Thelwall, M. (2006a), Google Scholar Citations and Google Web/URL citations: A multidiscipline exploratory analysis. In: Proceedings International Workshop on Webometrics, Informetrics and Scientometrics & Seventh COLLNET Meeting, Nancy (France). Retrieved November 4, 2006, from http://eprints.rclis.org/archive/00006416
  39. Kousha, K., Thelwall, M. (2006b), Sources of Google Scholar citations outside the Science Citation Index: A comparison between four science disciplines. In: Book of Abstracts, 9th International Science & Technology Indicators Conference, Leuven, Belgium, 72–73.Google Scholar
  40. LaGuardia, C. (2005), E-Views and Reviews: Scopus vs. Web of Science, Library Journal, January 15, 2005.Google Scholar
  41. Liang, L. (2006), H-index sequence and h-index matrix: Constructions and applications. Scientometrics, 69(1): 163–169.CrossRefGoogle Scholar
  42. Miller, C. W. (2006), Superiority of the h-index over the Impact Factor for Physics. Preprint. Retrieved November 4, 2006, from http://arxiv.org/PS_cache/physics/pdf/0608/0608183.pdf
  43. Moed, H. F. (2005), Hirsch Index is a Creative and Appealing Construct but Be Cautious when Using It to Evaluate Individual Scholars. Retrieved November 4, 2006, from http://www.cwts.nl/hm/Comments_on_Hirsch_Index_2005_12_16.pdf
  44. Mullen, L. B., Hartman, K. A. (2006), Google Scholar and the Library Web Site: The early response by ARL Libraries. College & Research Libraries, 67(2): 106–122.Google Scholar
  45. 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.CrossRefGoogle Scholar
  46. Noruzi, A. (2005), Google Scholar: The new generation of citation indexes. LIBRI, 55(4): 170–180.CrossRefGoogle Scholar
  47. Pauly, D., Stergiou, K. I. (2005), Equivalence of results from two citation analyses: Thomson’s ISI Citation Index and Google’s Scholar service. Ethics in Science and Environmental Politics, 2005, 33–35.Google Scholar
  48. Payne, D. (2004), Google Scholar welcomed. News from The Scientist, 5(1):20041123-01. Retrieved October 31, 2006, from http://www.the-scientist.com/news/20041123/01
  49. Purvis, A. (2006), The h-index: Playing the numbers game. TRENDS in Ecology and Evolution, 21(8): 422.CrossRefGoogle Scholar
  50. Rahm, E., Thor, A. (2005), Citation analysis of database publications. SIGMOD Record, 34(4): 48–53.CrossRefGoogle Scholar
  51. Reed Elsevier (2004), Scopus Comes of Age. Retrieved October 31, 2006, from http://www.reedelsevier.com/index.cfm?Articleid=1075
  52. Rousseau, R. (2006a), A Case Study: Evolution of JASIS’ Hirsch Index. Preprint, Retrieved November 4, 2006, from http://eprints.rclis.org/archive/00005430/01/Evolution_of_h_JASIS_rev.pdf
  53. Rousseau, R. (2006b), Simple Models and the Corresponding h-and g-index. Preprint. Retrieved November 4, 2006, from http://eprints.rclis.org/archive/00006153/01/Rousseau_Dalian.pdf
  54. Saad, G. (2006), Exploring the h-index at the author and journal levels using bibliometric data of productive consumer scholars and business-related journals respectively. Scientometrics, 69(1): 117–120.CrossRefGoogle Scholar
  55. Schubert, A., Glänzel, W. (2006), A systematic analysis of Hirsch-type indices for journals, preliminary results. In: Book of Abstracts, 9th International Science & Technology Indicators Conference, Leuven, Belgium, 251–253.Google Scholar
  56. Scopus (no date), About Scopus. Retrieved October 31, 2006, from http://www.info.scopus.com/about
  57. Sidiropoulos, A., Katsaros, D., Manolopoulos, Y. (2006), Generalized h-index for Disclosing Latent Facts in Citation Networks. In Proceedings of LinkKDD06. Retrieved November 4, 2006, from http://arxiv.org/PS_cache/cs/pdf/0607/0607066.pdf
  58. Smith, A. (2006), Google Scholar as a cybermetric tool: A comparison with the New Zealand PRBF research assessment. In: Book of Abstracts, 9th International Science & Technology Indicators Conference, Leuven, Belgium, 139–141.Google Scholar
  59. Thomson Scientific (no date), Web of Science. Retrieved October 31, 2006, from http://scientific.thomson.com/products/wos
  60. van Raan, A. F. J. (2005), Comparison of the Hirsch-index with standard bibliometric indicators and with peer judgment for 147 chemistry research groups. Scientometrics, 69(1): 117–120.Google Scholar
  61. Vaughan, L., Shaw, D. (2006), Comparison of citations from ISI, Google and Google Scholar: Seeking Web indicators of input. In: Book of Abstracts, 9th International Science & Technology Indicators Conference, Leuven, Belgium, 155–156.Google Scholar
  62. Visser, M. S., Moed, H. F. (2005), Developing bibliometric indicators of research performance in computer science. In: Proceedings of ISSI 2005, vol. 1, 275–279.Google Scholar
  63. Visser, M. S., Moed, H. F. (2006), How important are conference papers for measuring research performance in Computer Science? In: Book of Abstracts, 9th International Science & Technology Indicators Conference, Leuven, Belgium, 161–162.Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  1. 1.Department of Information ScienceBar-Ilan UniversityRamat GanIsrael

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