H-index

The h-index is an index that attempts to measure a researcher's academic production and impact (citations) in one measurement.

A h-index of h, means that you have h publications have been cited at least h times.

You can easily calculate your h-index by ranking your publications according to falling number of citations and gaging how many publications (h) have a minimum of citations.

Graf over H-index

Different h-indexes

The h-index is based on a researcher's most cited publications and may vary depending on which source is being used for the calculation.

You can calculate the h-index in the citation databases Scopus (Elsevier) and Web of Science (Thomson Reuters). Moreover, Anne-Wil Harzing's Publish or perish provides the basis for how the calculation can be made by means of Google Scholar.

The citation databases and Google Scholar cover varying publications, and citation figures will therefore vary across databases. There can thus exist different h-indexes for the same person depending on which source is being used.

The size of a h-index also varies greatly across disciplines, and is influenced by how many years a researcher has published actively. Moreover, the h-index does not always behave consistently, when you rank researchers. Thus, it is often difficult to compare researchers using h-index.

Despite this the h-index is frequently used as an alternative to traditional methods, which typically focus on either productivity or influence in the form of citations.

Need help?

 If you have any questions or concerns, feel free to contact the liason librarian associated with your field, who will be happy to assist you with your questions.

  Alternatively, you are always welcome to contact your local service location.  

Keep your h-index updated

To ensure that your h-index is updated on an ongoing basis and can be read on Web of Science, Scopus and Google Scholar, you can create and link a number of researcher ID’s. Read more about researcher ID’s.