Interested in learning more about scholarly impact metrics? Please contact your library subject specialist to set up a consultation.
Citation count:
The simplest of the metrics, citation count adds up the total number of citations that you have received for your scholarly output. Citation count can be expressed on a article or researcher basis.
h-index:
h-index is a measure of author ranking that is calculated by taking "the highest number of papers a scientist has that have each received at least that number of citations" (Ball, 2005). For example, an h-index number of 10 means that the author has 10 papers that have been cited 10 times each. It is used primarily in the sciences.
An author's h-index can be accessed from the Web of Science database, or from Google Scholar .
g-index:
g-index attempts to improve on the h-index by adjusting for highly cited papers. An author's g-index is calculated by ranking a set of articles in decreasing order by the number of citations received. "The g-index is the (unique) largest number such that the top g articles received (together) at least g² citations" (Harzing, 2016). Basically, the g-index uses the cumulative sum of citations in calculating the metric (g² < the cumulative sum of citations).
i-10 index:
Used only in Google Scholar, this metric is a measure of how many papers a given author has published that have received at least 10 citations.