The Impact Factor is a measure of the frequency in which the "average article" from a particular journal has been cited in a given period of time. It is one way scholars measure the relative importance of a journal within its field.
Use InCites Journal Citation Reports (JCR) to locate Journal Impact Factors and JIF quartile rankings.
Journal Quartile Rankings
Journal quartile rankings are calculated by the JIF of the journal and dividing it by the number journals in that category to find x. They are then distributed among as follows:
Q1: 0.0 < x ≤ 0.25
Q2: 0.25 < x ≤ 0.5
Q3: 0.5 < x ≤ 0.75
Q4: 0.75 <x
When searching in Web of Science, hover over the journal title in the results list or item record to view the journal's quartile ranking
Image from University of Denver Libraries
Journal Citation Reports evaluates journals based on citation data. It measures research influence and calculates impact factor at the journal and category levels and shows the relationship between citing and cited journals.
JCR can show you the:
Search by Category
This web source is used to evaluate journal titles; it ranks and maps scientific knowledge. Eigenfactor includes Article Influence scores which are calculated based on per article citations and assigns Eigenfactor Scores which are a measure of the journal's value for a year. Use the scientific browser to find key journals in a specific field of study.
Profiles nearly a quarter of a million consumer and trade magazines, academic and scholarly publications, monographic series, newsletters, newspapers, electronic publications, 'zines, and many other types of serial publications on all subjects.
Author-level metrics attempt to measure the impact of individual authors. While there are many different indicators for measuring author-impact, the two commonly used metrics are:
H-index: number of papers (h) with a citation number ≥ h
i10-index: the number of publications with at least 10 citations
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