Working with the bibliographic database Scopus requires certain skills and knowledge of a researcher aimed at achieving results: popularizing their research and gaining recognition among the research community. Otherwise, Scopus is the platform that provides access to current information and the opportunity to be integrated into the processes of contemporary scientific thought.
It is worth noting that Scopus has certain nuances of use, as well as additional tools that help optimize work. Among them are scientific metrics - quantitative indicators for evaluating the impact of research. In this article, we will examine CiteScore in detail, comparing it with SJR and SNIP.
What is CiteScore?
CiteScore is one of the tools that allows tracking the significance (number of citations) of peer-reviewed scientific works, providing a quantitative assessment of the level of citation of publications in scientific journals. The formula for determining CiteScore is quite easy to compute, unlike other metrics, it can be checked independently.
How is CiteScore calculated?
Calculation = the ratio of the average number of citations to the published number of articles over 4 years. The number of citations is divided by the number of documents published over the last 4 years;
The number of citations — this is the numerator of CiteScore; The number of documents — this is the denominator of CiteScore;
Various metrics are applied to calculate the indicators of the authority of scientific publications;
A more real-time way to track the impact of a publication is through CiteScore Tracker, whose results are calculated every month, while CiteScore is used as a tool for annual summaries (SJR and SNIP are updated only once a year).
Which metrics are included in CiteScore?
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Percentage Cited;
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Document Count (number of documents);
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Citation Count (number of citations);
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CiteScore Rank (the journal's position among other journals in a specific CiteScore category);
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CiteScore Quartiles (CiteScore quartiles, where Q1 corresponds to the highest score and Q4 to the lowest);
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CiteScore Percentile (the journal's authority in a specific field of knowledge: a score of 98% indicates that the journal is among the top 2% in its field);
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CiteScore Tracker;
What materials does the indicator apply to?
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Research articles;
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Review articles;
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Conference papers;
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Informational articles;
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Book chapters.
What is the purpose of using the indicator?
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For a more precise understanding of the impact of scientific works and methods for their improvement;
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For awareness of the authority and success of the scientific publication;
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For comparative analysis of publications and making important publication decisions;
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For forecasting the development of the journal and its rating stability. Consequently, the level of journal influence can affect grant funding;
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For orientation towards the achievement of the publication. For example, low CiteScore indicators may lead to the cessation of the journal's indexing among similar thematic journals.
Which publications are not considered by the CiteScore rating?
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Publications with status 'in press'
For whom is CiteScore?
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For researchers;
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For librarians;
Difference between CiteScore, SJR, and SNIP:
Note that SJR and SNIP are also metrics within the Scopus database.
SJR (Scimago Journal Rank) is an indicator of the influence of scientific journals, calculated based on the number of citations of articles in that journal, as well as the influence of journals citing these publications.
The SJR index is based on the number of valuable citations for each document.
SNIP (Source Normalized Impact per Paper) is an indicator of the assessment of the publication's activity.
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CiteScore is a citation indicator;
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SJR focuses on the weight of the citation;
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When it comes to a journal's quartile, SJR is more often mentioned;
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The quartile of the publication may not coincide on both platforms (Scimago and Scopus);
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The methodology for calculating CiteScore is developed by Elsevier; SNIP and SJR are calculated in partnership with CWTS and the Scimago Research Group;
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The main metric in Scimago is SJR; The main metric in Scopus is CiteScore;
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SJR and SNIP have a complex calculation formula;
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CiteScore is significantly easier to use;
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SJR is calculated only for journals that have been in the Scopus database for at least 1-2 years.
Scimago is an open service that includes a list of scientific journals and publication indicators for countries. Developers obtain data from Scopus.
Impact Factor or influence coefficient
This indicator is calculated as the ratio of the number of citations found in the WoS Core Collection for materials published in a particular journal over the past two years to the total number of articles and reviews published in the same journal over the past two years.
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This is an arithmetic mean value that does not consider the distribution of citations;
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The Impact Factor does not consider the quality of the research;
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Comparing the Impact Factor between journals in different fields of knowledge is impossible;
Difference between the influence coefficient and CiteScore
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CiteScore uses data from Scopus, whereas the Impact Factor is based on information from the Web of Science;
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CiteScore covers all fields of knowledge, while the Impact Factor is calculated only for journals indexed in SCIE and SSCI.
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CiteScore takes into account a four-year citation period, while the Impact Factor uses a two-year period.
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