Research metrics give a balanced, multi-dimensional view for assessing the value of published research. Based on the depth and breadth of its content, Scopus works with researchers, publishers, bibliometricians, librarians, institutional leaders and others in academia, to offer an evolving basket of metrics that complement more qualitative insights. Throughout Scopus, you can access multiple metrics at the journal, article and author levels.
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CiteScore™ metrics are a new standard to measure serial citation impact. Comprehensive, transparent, current and free, CiteScore metrics help you to analyze the impact of all serial titles – including journals – in Scopus.
Journal level metrics continue to be an important part of the basket of metrics, complementing new and alternative metrics to provide a multi-faceted view of a journal’s impact. On Scopus, you will find an evolving and expanding suite of journal metrics that go beyond just journals to include most serial titles, including supplements, special issues and conference proceedings. Freely available on Scopus you will find CiteScore metrics (NEW), SCImago Journal Rank (SJR) and Source Normalized Impact per Paper (SNIP).
CiteScore metrics: A family of eight indicators that offer complementary views to analyze the publication influence of serial titles of interest. Derived from the Scopus database — almost twice the size of the next-leading abstract and citation data provider — CiteScore metrics offer a more robust and accurate indication of a serial’s impact.Show more
CiteScore metrics are calculated using Scopus data for over 22,200 serial titles ― peer-reviewed journals, book series, conference proceedings and trade journals ― in 330 disciplines. CiteScore, the annual calculation for previous, complete years, is one component of the larger CiteScore metrics family which include the following eight indicators:
- CiteScore Tracker
- CiteScore Percentile
- CiteScore Quartiles
- CiteScore Rank
- Citation Count
- Document Count
- Percentage Cited
CiteScore Tracker is calculated in the same way as CiteScore, but for the current year rather than previous, complete years. The CiteScore Tracker calculation is updated every month, as a current indication of a title’s performance.
SCImago Journal Rank (SJR): 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.Show more
SJR accounts for both the number of citations received by a title and the importance or prestige of the titles where such citations come from. It is a variant of the eigenvector centrality measure used in network theory. Such measures establish the importance of a node in a network based on the principle that connections to high-scoring nodes contribute more to the score of the node.
The SJR indicator, which is inspired by the PageRank algorithm, was developed for extremely large and heterogeneous journal citation networks. It is a size-independent indicator and ranks journals by their 'average prestige per article'.
average # of weighted citations received in a year
# of documents published in previous 3 years
Developed by: Professors Félix de Moya, Research Professor at Consejo Superior de Investigaciones Científicas and Vicente Guerrero Bote at University of Extremadura.
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.Show more
SNIP “…further develops Eugene Garfield's notions of a field's 'citation potential' defined as the average length of references lists in a field and determining the probability of being cited, and the need in fair performance assessments to correct for differences between subject fields." Henk Moed, Journal of Informetrics, 4 (2010, pp 256-277)
Citation potential is shown to vary not only between journal subject categories – groupings of journals sharing a research field – or disciplines (e.g., journals in Mathematics, Engineering and Social Sciences tend to have lower values than titles in Life Sciences), but also between journals within the same subject category. For instance, basic journals tend to show higher citation potentials than applied or clinical journals, and journals covering emerging topics higher than periodicals in classical subjects or more general journals.
SNIP corrects for such differences. Its strengths and limitations are open to critical debate. All empirical results are derived from the Scopus abstract and indexing database. SNIP values are updated once a year, providing an up-to-date view of the research landscape.
journal’s citation count per paper
citation potential in its subject are
Developed by: Professor Henk Moed at CTWS, University of Leiden
Article-level metrics (ALMs) quantify the reach and impact of published research. Scopus incorporates data from new sources (such as social media mentions) along with traditional measures (such as citations) to present a richer picture of an individual article’s impact.Show more
The Article Metrics module on Scopus combines citation and alternative metrics in a new way to help you benchmark articles better. Use it to both determine which articles to read, and to gain deep insights into how an article compares with similar articles. On the Scopus article page, a sidebar highlights the minimal number of meaningful metrics a researcher needs, including (as available):
- Citation count and percentile benchmark
- Field-Weighted Citation Impact (FWCI)
- Mendeley readership count and benchmark
- Count of 1 type of scholarly commentary (e.g., blog posts, Wikipedia)
- Count and benchmark of 1 type of social activity (e.g., Twitter, Facebook)
- Total count of additional metrics and link to see breakdown by source
From the sidebar, clicking <View all metrics> opens the full Article Metrics module, providing an overview of all available metrics and the underlying content for further analysis and understanding.
Scopus bibliometrics can help you assess an individual author’s research output and scholarly impact. The depth and breadth of content on Scopus—which includes 2.5 million pre-1996 recently added record—provides the quality data needed to build accurate measurements of an author’s impact.Show more
With Scopus you can easily analyze and track an individual’s citation history. In addition to finding an author’s total citation and document counts from an author’s details page, you can also access the following metrics and tools:
h-index and h-graph: Rates a scientist's performance based on his or her career publications, as measured by the lifetime number of citations each article receives. The measurement depends on both quantity (number of publications) and quality (number of citations) of an academic's publications.
Citation overview tracker: An adjustable table that includes the number of times each document has been cited per publication year.
Analyze author output: A collection of in-depth and visual analysis tools designed to provide a better picture of an individual’s publication history and influence.