During the 21st century, journal metrics become relevant in the field of research to determine the obtained citation counts, consider for possible publication, and attract high-quality peer-reviewed research papers.
CiteScore measures the average citations received per peer-reviewed document published in this title. CiteScore values are based on citation counts in a range of four years (e.g. 2016-2019) to peer-reviewed documents (articles, reviews, conference papers, data papers, and book chapters) published in the same four calendar years, divided by the number of these documents in these same four years (e.g. 2016 – 19).
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is a new standard to help you measure citation impact for journals, book series, conference proceedings, and trade journals. It calculates the average number of citations received in a calendar year by all items published in that journal in the preceding three years. This can be found using Scopus Journal Sources.
Source: https://www.elsevier.com/
Source-Normalized Impact per Paper (SNIP) measures contextual citation impact by weighting citations based on the total number of citations in a subject field. The impact of a single citation is given higher value in subject areas where citations are less likely and vice versa. This can be found using Scopus Journal Sources.
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SCImago Journal Rank (SJR) is a prestige metric that can be applied to journals, book series, and conference proceedings. With SJR, the subject field, quality, and reputation of the journal have a direct effect on the value of a citation. This can be found using Scopus Journal Sources.
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The h-index of a journal measures its impact based on the number of citations on it. It quantifies both journal scientific productivity and scientific impact and it is also applicable to scientists, countries, etc.
The Journal Impact Factor measures the importance of a journal and "is a measure of the frequency with which the 'average article' in a journal has been cited in a particular year or period". The Journal Citation Reports (JCR), an Incites database from Clarivate Analytics, formerly Thomson Reuters and ISI provides an analytical method for determining the quality of a particular scholarly journal compared to other journals in its field.
Field-Weighted Citation Impact (FWCI) shows how the article's citation count compares to similar articles in the same field and timeframe. This can be found using the Scopus database and only documents within the database (1996 to the present) will have an FWCI.
The Eigenfactor Score measures the number of times articles from the journal published in the past five years from Journal Citation Reports (JCR); available for 1997-2015. A journal's Scores are scaled so that the sum of all journal scores is 100.
Normalised Eigenfactor Score (EFn) - scaled so that the journal’s mean score = 1.00 . A journal with a Normalized Eigenfactor Score of 3 has three times the total influence of the average journal in the JCR. In 2014, PLoS One had the highest EFn Score of 217.451.
The Google Scholar metrics use h5-index* and h5-median** to rank journals grouped by subject categories or language. You may also browse journal titles by choosing a subject category, and sub-category
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