Allows for direct comparisons of researchers within disciplines
Measures quantity and impact by a single value
Attempts to minimize the influence of one or two articles that have been cited numerous times
Attempts to minimize the influence of having published numerous articles with few or no citations
The H-index is a measure of the number of publications published by an individual and how often they are cited
An author's h-index, or Hirsch index, is the number (integer) n for which the author has published at least n papers which have each been cited at least n times. Eg
How to find your H-index
Scopus - Select author search or ORCID. click view Citation Report
Google Scholar - Create a Google Scholar profile which will generate your h-index
Publish or Perish - Based on Google Scholar Metrics this free software can calculate a variety of author metrics
Microsoft Academic - re-activated in 2016, Microsoft's answer to Google Scholar
The H index is dependent on the academic area
There are claims that the G - index is more accurate than the H - index. It gives more weight to highly-cited articles.
G-Index is calculated by ranking a set of articles in decreasing order of the number of citations that occur.
The G-Index is the (unique) largest number that the top g articles received (together) at least g^2 citations.
Not as widely accepted as H-Index.
i10-Index = the number of publications with at least 10 citations
Created by Google Scholar and used only in Google's My Citations feature
Another way to help calculate the productivity of a scholar.
Very simple, free and straightforward to calculate but only used in Google Scholar