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| H-index× | SCImago Journal Rank× | |
|---|---|---|
| Tudományterület | Bibliometria | Bibliometria |
| Módszercsalád | Process / pipeline | Process / pipeline |
| Keletkezés éve≠ | 2005 | 2010 |
| Megalkotó≠ | Jorge Hirsch, University of California San Diego | SCImago Group (Spanish research consortium) |
| Típus | Metric | Metric |
| Alapmű≠ | Hirsch, J. E. (2005). An index to quantify an individual's scientific research output. Proceedings of the National Academy of Sciences USA, 102(46), 16569-16572. DOI ↗ | González-Pereira, B., Guerrero-Bote, V. P., & Moya-Anegón, F. (2010). The SJR indicator: A new indicator of journals' scientific prestige. Scientometrics, 82(2), 391-400. link ↗ |
| Alternatív nevek | Hirsch index, h factor, h-number | SJR, SCImago Journal Rank, Prestige-weighted impact |
| Kapcsolódó | 5 | 5 |
| Összefoglaló≠ | The h-index, or Hirsch index, is a quantitative metric proposed by physicist Jorge Hirsch in 2005 to measure researcher productivity and citation impact simultaneously. A researcher has an h-index of h if they have published at least h papers, each cited at least h times. For example, an h-index of 20 means the researcher has 20 papers each cited at least 20 times. The h-index is widely used in research evaluation, hiring, and promotion decisions, though experts debate its limitations. It provides a single number balancing quantity of publications against quality of citations, offering an intuitive summary of research career impact. | SCImago Journal Rank (SJR) is a prestige-weighted metric measuring journal citation impact based on Scopus data, developed by SCImago Group (a Spanish research consortium) in 2010. Unlike raw citation counts, SJR values citations from high-prestige journals more heavily than those from lower-prestige journals, similar to Google's PageRank algorithm. This prestige weighting approach accounts for field-specific citation cultures and provides fairer cross-discipline comparisons than raw impact factor. SJR is widely used for journal ranking, quality assessment, and publication targeting, complementing traditional Impact Factor with a prestige dimension. |
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