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Research Impact

Includes measures of scholarly impact such as journal impact factors, researcher impact, citation analysis and altmetrics.

Citation counts and Author metrics

Use Scopus  and  Web of Science to find:scopus

  • citation counts for an publication
  • who has cited a publication
  • most highly cited article for an authorweb of science
  • h-index number for an author
  • eliminate self-citations from a citation count

Google Metrics

Google Scholar Metrics  - Provides these analytics for a publication: h-index, h-core, h-median, as well as those figures for the last 5 completed calendar years (h5-index, h5-core, and h5-median)

Google Scholar Citations - Free service that allows authors to check who is citing publications, graph citations over time, and compute citation metrics such as h-index and i10-index.

Publish or Perish (POP)

Harzing Publish or Perish - This free downloadable tool uses Google Scholar data to create citation analysis reports by author or journal name. Provides:

  • Total number of papers and total number of citations
  • Average citations per paper, citations per author, papers per author, and citations per year
  • Hirsch's h-index and related parameters
  • Egghe's g-index
  • The contemporary h-index
  • Three variations of individual h-indices
  • The average annual increase in the individual h-index
  • The age-weighted citation rate
  • An analysis of the number of authors per paper.

Author metrics

Citation counts measure the impact of a publicaton or an author by counting the number of times either is cited by other works.

Hirsch's or h-index attempts to measure the impact of the published work of an author and is based on the set of an author's most cited papers and the number of citations received in other publications. The index can also be applied to the impact of a group of authors, such as a school or department, as well as a scholarly journal.   Hirsch, J. E. (2005). An index to quantify an individual's scientific research output. Proceedings of the National academy of Sciences of the United States of America, 102(46), 16569-16572.

Egghe's g-index - Gives more weight to highly cited articles. Egghe, L., "Theory and practice of the g-index," Scientometrics, Vol. 69, No 1 (2006), pp. 131-152.

Zhang's e-index - The e-index is the (square root) of the surplus of citations in the h-set beyond h2, i.e., beyond the theoretical minimum required to obtain a h-index of 'h' and seeks to differentiate between scientists with similar h-indices.Chun-Ting Zhang, The e-index, complementing the h-index for excess citations," PLoS ONE, Vol 5, Issue 5 (May 2009), e5429. 

M-Quotient - In order to better compare academics with different lengths of academic careers, M represents the h-index divided by the number of years an academic has been active.  (Hirsch, 2005).

Contemporary h-Index- Gives more weight to recent articles.   Antonis Sidiropoulos, Dimitrios Katsaros, Yannis Manolopoulos, Generalized h-index for Disclosing Latent Facts in Citation Networks,"" arxiv.org/abs/cs.DL/0607066

Individual h-index - divides the standard h-index by the average number of authors in the articles that contribute to the h-index, in order to reduce the effects of co-authorship.  Batista, P. D., Campiteli, M. G., & Kinouchi, O. (2006). Is it possible to compare researchers with different scientific interests?. Scientometrics, 68(1), 179-189.

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