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Journal Metrics |
Journal-level metrics are quantitative measures used to assess the impact and influence of academic journals based on the number of publications and citations the publications received in the journal. Journal-level metrics serve multiple purposes, including assessing the influence and prestige of journals for comparison and ranking purposes. They also inform authors' publication choices, as well as provide evidence of the impact and dissemination of previous research outputs when applying for grants or funding. Researchers can utilize journal metrics to identify high-impact journals within their field, facilitating collaboration and networking opportunities with other researchers who publish in those journals. |
What is it
CiteScore is an annually released metric that measures the citation impact of peer-reviewed research in serial titles such as journals, book series, and conference proceedings indexed by Scopus.
Calculating the CiteScore is based on the number of citations to five peer-reviewed document types (articles, reviews, conference papers, book chapters, and data papers) by a journal over four years, divided by the number of the same document types indexed in Scopus and published in those same four years.
CiteScore-Derivative Metrics
CiteScore Percentile reflects a serial title's rank within its subject field. A title receives a CiteScore Percentile for each subject area in which it is indexed in Scopus.
Highest Percentile reflects the highest CiteScore Percentile for this title from all subject areas in which it is categorized.
CiteScore Rank reflects the rank position of the title in its subject area. A title receives a CiteScore Rank for each subject area in which it is indexed in Scopus.
CiteScore Tracker is a monthly updated metric that measures a title's current-year performance. It is calculated in the same way as CiteScore, but for the current year rather than previous, complete years.
How to find it
| Scopus > |
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1. On Scopus, click "Sources" on the top of the page. CiteScore can be found on the journal list below, next to each title. 2. If you have a particular journal in mind, search it by title or ISSN. 3. Click the journal name and view the CiteScore-related metrics on the next page. 4. Click "CiteScore rank & trend" to view the detailed rank table and trend bar chart on the next page.
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What is it
SCImago Journal Rank (SJR) is a measure of the number of times an average paper in a particular journal is cited, similar to CiteScore. A major difference is that instead of each citation being counted as one, as with CiteScore, the SJR assigns each citation a value greater or less than 1.00 based on the rank of the citing journal, considering its subject field and prestige. The weighting is calculated using a three-year window of measurement and uses the Scopus database.
The calculation is based on the idea that higher SJR journals contribute more valuable citations compared to lower SJR journals. In other words, citations issued by more important journals will be more valuable than those issued by less important ones. This 'importance' will be computed recursively, i.e., the important journals will be those which in turn receive many citations from other important journals. Authors can use SJR to guide their publication decisions.
Detailed methodology: Guerrero-Bote, V. P., & Moya-Anegón, F. (2012). A further step forward in measuring journals’ scientific prestige: The SJR2 indicator. Journal of Informetrics, 6(4), 674-688. https://doi.org/10.1016/j.joi.2012.07.001
Reference: https://journalinsights.elsevier.com/journals/0959-3780/sjr
https://www.scimagojr.com/aboutus.php
How to find it
| Scopus > |
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1. On Scopus, click "Sources" on the top of the page. 2. Click the arrow to scroll the header to view the SJR next to each title on the journal list. 3. If you have a particular journal in mind, search it by title or ISSN. 4. Click the arrow to scroll the header to view the SJR of the journal. 5. Click the journal name and view the SJR on the next page.
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| SCImago > |
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1. Go to SCImago, click "Journal Rankings" to view the SJR next to each title on the journal list. 2. If you have a particular journal in mind, search it by title or ISSN and select it on the next page. 3. On the journal page, scroll down to the middle until you see a graph labelled "SJR". Mouse over the graph to view SJR by year. 4. You can also click on the table icon to switch to the table view and see the SJR metrics in a tabular format.
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What is it
Source Normalized Impact per Paper (SNIP) quantifies the contextual citation impact of a source by taking into account the total number of citations within a specific subject field. It evaluates the citations per publication of each journal and compares it to the citation potential of the field, which is determined by the set of publications that cite that particular journal. SNIP facilitates a direct comparison of sources across diverse subject fields.
Detailed methodology: Waltman, L., Van Eck, N. J., Van Leeuwen, T. N., & Visser, M. S. (2013). Some modifications to the SNIP journal impact indicator. Journal of Informetrics, 7(2), 272-285. https://doi.org/10.1016/j.joi.2012.11.011
Reference: https://www.journalindicators.com/methodology
How to find it
| Scopus > |
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1. On Scopus, click "Sources" on the top of the page. 2. Click the arrow to scroll the header to view the SNIP next to each title on the journal list. 3. If you have a particular journal in mind, search it by title or ISSN. 4. Click the arrow to scroll the header to view the SNIP of the journal. 5. Click the journal name and view the SNIP on the next page.
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What is it
Journal Impact Factor (JIF) is a metric generated by Clarivate's Journal Citation Reports (JCR) from data indexed in the Web of Science Core Collection. The calculation is based on the number of citations a journal's articles receive in a given year divided by the total number of articles published by the journal in the preceding two years. Beginning with the JIF 2022, all journals in the Web of Science Core Collection, including Science Citation Index Expanded (SCIE), Social Science Citation Index (SSCI), Arts & Humanities Citation Index (AHCI) and Emerging Sources Citation Index (ESCI) are with JIFs.
The resulting number represents the average number of citations received per article. Higher impact factors are generally associated with journals that are considered more influential and have a greater impact in their respective fields.
How to find it
| Web of Science > |
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1. On Web of Science, click "Products" on the top right corner of the page. 2. Click "Journal Citation Reports". 3. You can click one of the icons to view journals by titles, categories, publishers or countries/regions. Click "Journals". The JIF is next to the journal name on the next page. 4. To assess the journal using additional metrics, click "Customize". 5. Check the desired metrics. 6. Click "Apply" to view the newly added metrics on the next page. 7. If you have a particular journal in mind, go back to the homepage of the Journal Citation Reports, and search the journal by title or ISSN. On the next page, scroll down to view the JIF. 8. Select one of the years to view JIF by year.
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What is it
The 5-year Journal Impact Factor is the average number of times articles from the journal published in the past five years have been cited in the JCR year. It is calculated by dividing the number of citations in the JCR year by the total number of articles published in the five previous years.
How to find it
| Web of Science > |
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1. On Web of Science, click "Products" on the top right corner of the page. 2. Click "Journal Citation Reports". 3. You can click one of the icons to view journals by titles, categories, publishers or countries/regions. Click "Journals" to view journal metrics on the next page. 4. To assess the 5 Year JIF, click "Customize". 5. Check "5 Year JIF". 6. Click "Apply" to view the newly added metric on the next page. 7. If you have a particular journal in mind, go back to the homepage of the Journal Citation Reports, and search the journal by title or ISSN. 8. On the next page, scroll down to the end to view the "5 Year Impact Factor" under "Additional metrics".
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What is it
Journal Citation Indicator (JCI) is a category-normalized metric calculated for all journals in the Web of Science Core Collection, including the Science Citation Index Expanded (SCIE), Social Science Citation Index (SSCI), Arts & Humanities Citation Index (AHCI), and Emerging Sources Citation Index (ESCI). The JCI is the average Category Normalized Citation Impact (CNCI) of citable items (articles & reviews) published by a journal over a recent three-year period. For example, the 2022 JCI was calculated for journals that published citable items (i.e., articles or reviews) in 2019, 2020 and 2021, counting all citations they received from any document indexed between 2019 and 2022.
Because it is normalized, JCI allows comparisons across disciplines. As in the CNCI measurement, the JCI calculation controls for different fields, document types (articles, reviews, etc.) and year of publication. The resulting number represents the relative citation impact of a given journal as the ratio of citations compared to a global baseline. A value of 1.0 represents the world average, with values higher than 1.0 denoting higher-than-average citation impact and lower than 1.0 indicating less than average.
How to find it
| Web of Science > |
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1. On Web of Science, click "Products" on the top right corner of the page. 2. Click "Journal Citation Reports". 3. You can click one of the icons to view journals by titles, categories, publishers or countries/regions. Click "Journals". The JCI is next to the journal name on the next page. 4. To assess the journal using additional JCI metrics, click "Customize". 5. Check the desired metrics. 6. Click "Apply" to view the newly added metrics on the next page. 7. If you have a particular journal in mind, go back to the homepage of the Journal Citation Reports, and search the journal by title or ISSN. On the next page, scroll down to view the JCI.
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