There are a few ways to measure an author's impact:
h-index or Hirsch index was proposed in 2005 by Jorge E. Hirsch to quantify the research achievement of physicists based on their publication record. The number attempts to measure both the productivity and citation impact of the publications of a scientist or scholar.
The diagram shows a researcher with an index of h. Out of all his publications, h publications have at least h citations each. For example, an h-index of 20 means that, out of all papers published by an author, 20 of them have been cited at least 20 times.
Here are the steps to find document counts, citation counts and h-index of an author in Scopus.
► Step 1. Go to Scopus.
► Step 3. You can then find the document counts and h-index.
► Step 4. You can then find the citation counts by year by document here.
Here are the steps to find document counts, citation counts and h-index of an author by creating a citation report in Web of Science.
► Step 1. Go to Web of Science.
► Step 3. Click on Create Citation Report.
► Step 4: View the author's document counts, citation counts, and h-index from the Citation Report.
To locate an author's metrics in Google Scholar, simply search the author's name using Google Scholar. The metrics will only be available for authors who have set up their Google Scholar profile with publications (in public view).
i10-index is the number of publications with at least 10 citations. It can be calculated against all publications for an author, or a 'recent' version (e.g. "Since 2012"), which is the number of publications that have received at least 10 new citations in the past 5 year.
Please note the followings when using h-index: