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Journals may also attempt to limit the number of "citable items"—i.e., the denominator of the impact factor equation—either by declining to publish articles that are unlikely to be cited (such as case reports in medical journals) or by altering articles (e.g., by not allowing an abstract or bibliography in hopes that Journal Citation ...
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. JCR was originally published as a part of the Science ...
[2] [3] As of June 2021, all journals indexed in ESCI are also included in the Journal Citation Reports. While these journals still did not receive an impact factor until the next year, they did contribute citations to the calculation of other journals' impact factors. [4] [5] In July 2022, Clarivate announced that journals in the ESCI obtain ...
The importance of journals can be measured by the average citation rate, [9] [6] the ratio of number of citations to number articles published within a given time period and in a given index, such as the journal impact factor or the citescore.
The measure is calculated as SNIP=RIP/(R/M), where RIP=raw impact per paper, R = citation potential and M = median database citation potential. [11] Journal Tier – One of the few indicators based not on citations but objective user ratings and reviews. [12] PageRank – in 1976 a recursive impact factor that gives citations from journals with ...
A journal's SJR indicator is a numeric value representing the average number of weighted citations received during a selected year per document published in that journal during the previous three years, as indexed by Scopus. Higher SJR indicator values are meant to indicate greater journal prestige.
In 2010, a criticism was voiced pointing toward certain deficiencies of the journal impact factor calculation process, based on Thomson Reuters Web of Science, such as: journal citation distributions usually are highly skewed towards established journals; journal impact factor properties are field-specific and can be easily manipulated by ...
In 2023, the Journal Citation Reports indicated that the Journal of Infection had an impact factor of 14.3 and a Journal Citation Indicator (JCI) of 2.80, with nearly 14,000 article citations that year. [11]