The H-index (or Hirsch index) is a numerical metric designed to assess the scientific productivity and reputation of an author, scientist or researcher. The H-index is based on the number of citations of an author's scientific articles and their ranking. It was developed by American physicist Jorge Hirsch in 2005.
To give an example, the h-index is defined as follows:
if a scientist has h scientific articles, each of which is cited at least h times, his h-index is h. In other words, this number h represents the balance between the number of articles and their impact (citations). For example, if an author has 10 articles, each of which is cited at least 10 times, then his h-index is 10.
How do I find the h-index for a particular author?
There are several ways to find the h-index for a particular author. You can use well-known scientometric databases or calculate the index manually.
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Google Scholar is one of the most popular and accessible ways. In the search box you need to enter the author's first and last name, then click on his profile. There you will find a list of his publications and h-index.
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Scopus is an authoritative scientific metrics database. Enter an author's name in the search box and select their profile to see their h-index and other scientific metrics.
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Web of Science - another reliable resource for finding the h-index. Searching by author name will also allow you to find their science metrics.
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Self-calculation: If you want to calculate the h-index manually, you first need to collect a list of all scientific papers (articles, books, conference papers, etc.) written by the author. Then sort the publications by number of citations in descending order (usually scientific databases provide this option). Find the last article in the sorted list that has a citation equal to or greater than its position in the list (e.g., if the 8th article has 10 citations, the author's h-index is 8).
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