Elsevier on Thursday issued a challenge to companies that track the impact of scholarly journals with the launch of CiteScore, the publisher's own set of metrics. In a blog post, Elsevier called CiteScore "a new standard that gives a more comprehensive, transparent and current view of a journal’s impact that will help [the publisher] guide your journal more effectively in the future." The metrics cover the more than 22,500 scholarly journals indexed in Scopus, the citation database Elsevier owns.
Metrics gauging the impact of journals the have been controversial among some researchers and publishers, who have said the emphasis on ranking journals negatively affects faculty members and journals themselves. Nature, which did an early comparison between CiteScore and the impact factor calculated by Clarivate Analytics (formerly by Thomson Reuters), found that journals with a high impact factor don't necessarily score as high using the CiteScore metrics.
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