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

  title={Which h-index? — A comparison of WoS, Scopus and Google Scholar},
  author={Judit Bar-Ilan},
  • J. Bar-Ilan
  • Published 1 February 2008
  • Computer Science
  • Scientometrics
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. 
Does it Matter Which Citation Tool is Used to Compare the H-Index of a Group of Highly Cited Researchers?
There is a significant difference between the outputs and results from these three citation databases namely Scopus, Google Scholar, and Web of Science based upon the h-index of a group of highly cited researchers (Nobel Prize winner scientist).
The impact of scientific journals of communication: Comparing Google Scholar Metrics, Web of Science and Scopus
It is concluded that Google Scholar Metrics is a tool capable of identifying the main journals in Communication Studies offering results as reliable and valid as the ones Web of Science and Scopus show.
Impact of h-index on authors ranking: A comparative analysis of Scopus and WoS
The difference in the h-index compiled with Scopus and Web of Science (WoS) is compared with the publication records of 350 authors from Monash University (Australia) with the aim of analyzing the ranking of the authors within a university.
Citation indices
Ethical issues related to the use of these resources for h-index calculation include – gaming/manipulation and fake citations, and researchers claiming erroneous h-indices.
The h-index, a publication citation measurement
The author discusses the journal impact factor, the h- index, including its calculation, advantages and disadvantages, as well as the impact of a particular publication on the research impact.
The h-index for countries in Web of Science and Scopus
The results show that in spite of the significant differences in the content of the two databases in terms of their source base and the extent of cited reference enhancement of records, the rank correlation of the ten countries based on the h‐index values returned by Web of Science and Scopus is very high.
Google Scholar Metrics’ launch in April 2012, a new bibliometric tool for the evaluation of scientific journals by means of citation counting, has ended with the duopoly exerted by the Web of Science and Scopus
Google Scholar Metrics’ launch in April 2012, a new bibliometric tool for the evaluation of scientific journals by means of citation counting, has ended with the duopoly exerted by the Web of Science
Coverage of highly-cited documents in Google Scholar, Web of Science, and Scopus: a multidisciplinary comparison
The main conclusion is that the data about highly-cited documents available in the inclusive database Google Scholar does indeed reveal significant coverage deficiencies in Web of Science and Scopus in several areas of research.
Comparing Google Scholar and ISI Web of Science for Earth Sciences
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
Measuring the Impact of Knowledge - A Comparison of Web of Science and Google Scholar
The results show that Web of Science is indeed poor in the area of management and that Google Scholar, whilst somewhat unreliable, has a much better coverage.


Using the h-index to rank influential information scientists
It is shown how the h-index can be used to express the broad impact of a scholar’s research output over time in more nuanced fashion than straight citation counts.
Exploring the h-index at the author and journal levels using bibliometric data of productive consumer scholars and business-related journals respectively
SummaryUsing both author-level and journal-level data, Hirsch's h-index is shown to possess substantial heuristic value in that it yields accurate results whilst requiring minimal informational
Equivalence of results from two citation analyses: Thomson ISI's Citation Index and Google's Scholar service
Citation counts were performed across a wide range of disciplines using both the Thomson ISI files and Google Scholar, and shown to lead to essentially the same results, in spite of their different
Scopus database: a review
  • J. Burnham
  • Computer Science
    Biomedical digital libraries
  • 2006
The Scopus database provides access to STM journal articles and the references included in those articles, allowing the searcher to search both forward and backward in time. The database can be used
Google Scholar: The New Generation of Citation Indexes
This study compares the citation counts provided by Web of Science and Google Scholar for articles in the field of “Webometrics" and concludes that Google Scholar provides a free alternative or complement to other citation indexes.
Sources of Google Scholar citations outside the Science Citation Index: A comparison between four science disciplines
An important corollary from this study is that Google Scholar’s wider coverage of Open Access (OA) web documents is likely to give a boost to the impact of OA research and the OA movement.
Gaga over Google? Scholar in the Social Sciences
Google Scholar’s lack of quality control and inability to let the user manipulate data make it less effective than the fee‐based databases at finding scholarly material in the social sciences.