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Journal Citation Reports (JCR) is an annual publication by Clarivate. [1] It has been integrated with the Web of Science and is accessed from the Web of Science Core Collection . It provides information about academic journals in the natural and social sciences , including impact factors .
The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly mean number of citations of articles published in the last two years in a given journal, as indexed by Clarivate's Web of Science.
The QS World University Rankings are a ranking of the world's top universities produced by Quacquarelli Symonds published annually since 2004. In 2024, they ranked 1500 universities, with the Massachusetts Institute of Technology, Imperial College London, University of Oxford, Harvard University and University of Cambridge taking the top 5 spots. [15]
As of their 2022 list, Clarivate uses "performance statistics" from data in the Web of Science.There are 21 specific fields, and one for interdisciplinary science—Clarivate creates a list of papers that are in the top 1% most highly cited in their field, [a] and admission to the HCR list is based on an author's number of papers in the top 1%.
The 2014 rankings include 750 universities worldwide, which were selected based on the number of articles and reviews published by authors affiliated with those institutions in 2009–2012 in so-called "core" journals, a set of English-language journals with international scope and a "sufficiently large" number of references in the Web of ...
The simplest journal-level metric is the journal impact factor, the average number of citations that articles published by a journal in the previous two years have received in the current year, as calculated by Clarivate. Other companies report similar metrics, such as the CiteScore, based on Scopus.
By 2002, the core journal coverage increased to 500 and related article coverage increased to 8,000 other journals. [18] One 1980 study reported the overall citation indexing benefits for chemistry, examining the use of citations as a tool for the study of the sociology of chemistry and illustrating the use of citation data to "observe ...
Absolute rankings and percentile ranks are also reported for each journal in a given subject area. [1] This journal evaluation metric was launched in December 2016 as an alternative to the Journal Citation Reports (JCR) impact factor (IF), calculated by Clarivate. CiteScore is based on the citations collected for articles published in the ...