Skip to Main Content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.

Biology 500A: Scopus Metrics

An online guide for Biology 500A


Introduced in 2016, a family of eight indicators to analyze the publication influence of serial titles. CiteScore metrics offer more robust, timely and accurate indicators of a serial title’s impact.


Diagram from Elsevier

CiteScore = (# citations received by a journal in one year to documents published in the three previous years) ÷ (# documents indexed in Scopus published in those same three years)

Note: CiteScore calculation is based on Scopus data, while Impact Factor is based on Web of Science data. CiteScore uses a 3-year window while Impact Factor adopts a 2-year window.

SNIP - Source Normalized Impact per Paper

Measures contextual citation impact by taking differences in disciplinary characteristics into account; can be used to compare journals in different fields. This is a  corrective metric to account for different research fields.

SNIP = (journal’s citation count per paper) ÷ (citation potential in its subject area)

SJR - SCImagi Journal Rank

A prestige metric for journals, book series and conference proceedings that weights the value of a citation based on the subject field, quality and reputation of the source. A detailed description of SJR with formulas is available.

SJR = (average # weighted citations received in a year) ÷ (# documents published in previous 3 years)

Scopus Metrics...more...