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Research Visibility: Author-Level Metrics

Author-level metrics include publication counts, citation counts (and highly cited publications), and the h-index (or related metrics).

h-index

The h-index, which was proposed in 2005 by physicist Jorge E. Hirsch, is a composite indicator of scholarly productivity (number of publications) and impact (number of citations). 

Example:

If you have authored 12 papers that have each received at least 12 citations, then your h-index is 12.

Considerations:

  • The h-index tends to favour researchers who have published a high number of papers; it should not be used to compare researchers at different stages of their careers.
  • Due to disciplinary differences in publication and citation rates, the h-index should not be used to compare researchers from different fields.
  • Research published in books or in other sources that are not well covered in citation-tracking databases will be under-represented in h-index calculations.

Find your h-index:

Your h-index is available from the following citation tracking databases, or you can calculate it manually:

  • Scopus - perform an Author Search to find your Scopus Author Profile, which contains your h-index.
  • Web of Science - perform an Author Search for your name, then click on Create Citation Report.
  • Google Scholar - your h-index is visible on your Google Scholar Citations profile.

The value of your h-index may vary between the above sources because of differences in the source data.

More information:

Bornmann, L., & Daniel, H. D. (2007). What do we know about the h index? Journal of the American Society for Information Science and Technology, 58(9), 1381-1385. https://doi.org/10.1002/asi.20609

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. https://doi.org/10.1073/pnas.0507655102

Waltman, L., & Van Eck, N. J. (2012). The inconsistency of the h‐index. Journal of the American Society for Information Science and Technology, 63(2), 406-415. https://doi.org/10.1002/asi.21678

i10-index

i10-Index = the number of publications with at least 10 citations. 

The i10-Index is a metric created by Google for use in its researcher profile system, Google Scholar Citations.

Find your i10-index:

Your i10-index is available from within Google Scholar Citations.

Outputs in Top Percentiles

Outputs in top citation percentiles indicate the number and proportion of an individual's (or group's or institution's) publications that are present in the top 1%, 5%, 10% (etc.) of the most-cited publications in the data universe (i.e. the data set being considered; in the case of SciVal metrics, the data universe is the Scopus database).

Find Outputs in Top Percentiles:

The following are available from SciVal:

Outputs in Top Citation Percentiles
Outputs in Top Journal Percentiles

Collaboration

Collaboration as a metric is a calculation of the number and percentage of publications that have national, international, or industry co-authorship.

Considerations:

  • Whether and to what extent collaboration is viewed as a relevant or useful measure will depend on the authorship practices of the discipline.
  • Since collaboration behaviours vary across disciplines (e.g. collaboration is more common in medicine than it is in the humanities) comparing collaborative activity across different disciplines is not advisable.

Find Collaboration Metrics:

Collaboration metrics are available from SciVal.