H-Index
A metric measuring both the productivity and citation impact of a researcher or institution. An H-index of 50 means 50 papers have each been cited at least 50 times.
The H-index, proposed by physicist Jorge Hirsch in 2005, provides a single number that captures both the quantity and quality of a researcher's or institution's publications. An H-index of h means h papers have each received at least h citations. While widely used in academia for evaluating research impact, the metric has limitations: it favors established researchers, varies significantly across disciplines, and cannot decrease over a career.
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