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Scopus is a scientific abstract and citation database, launched by the academic publisher Elsevier as a competitor to older Web of Science in 2004. [1] An ensuing competition between the two databases has been characterized as "intense" and is considered to significantly benefit their users in terms of continuous improvent in coverage, search/analysis capabilities, but not in price.
Scopus is the world's largest abstract and citation database of peer-reviewed research literature. It contains over 20,500 titles from more than 5,000 international publishers. While it is a subscription product, authors can review and update their profiles via ORCID.org or by first searching for their profile at the free Scopus author lookup page.
These articles variously point to the methodological papers and associated measure to discuss social aspects of the publication activity, such as unequal access to publishing of different social or national groups, including gender bias [13] [20] or the properties of the underlying Scopus' abstract and citation database.
The Chemistry Citation Index was first introduced by Eugene Garfield, a chemist by training. His original "search examples were based on [his] experience as a chemist". [17] In 1992, an electronic and print form of the index was derived from a core of 330 chemistry journals, within which all areas were covered.
Based on a metaresearch study by Ioannidis et al., [8] the new c-score is calculated by an algorithm that combines all scientific research fields and ranks research from the Scopus database across all research areas, even from those with lower citation density.
In any given year, the CiteScore of a journal is the number of citations, received in that year and in previous three years, for documents published in the journal during the total period (four years), divided by the total number of published documents (articles, reviews, conference papers, book chapters, and data papers) in the journal during the same four-year period: [3]
ResearcherID was proved to have less users compared with other author identifiers. As a result of an investigation in 2020, there were 172689 profiles in ResearcherID platform, which was less than the 657319 on Scopus database, and 513236 on ResearchGate. [11]
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.