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Impact factor
Measure of relative importance of a journal
Impact factor
The impact factor (IF) or journal impact factor (JIF) of an academic journal is a type of journal ranking. The impact factor of a journal reflects the yearly mean number of article citations published in the last two years, calculated by dividing the number of citations received by articles published in a journal for a given year divided by the number of articles published in that period. For example, an impact factor of 41 in 2017 indicates that the average number of citations received by an article published in that journal in 2017 was 41. Journals with higher impact-factor values are considered more prestigious or important within their field. Impact factor is a scientometric index calculated by Clarivate's Web of Science. While frequently used by universities and funding bodies to decide on promotion and research proposals, it has been criticised for distorting good scientific practices. The metric cannot effectively compare journals in different disciplines, as the number of citations...
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