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Research Impact

Key journal metrics

The following are key journal metrics that can be found in databases or websites:

Journal Metrics

Journal impact factor (JIF)

Journal citation indicator (JCI)

5 year JIF

JCR Quartile

JCR Percentile 

Immediacy index

CiteScore

SJR

SNIP h5-index Eigenfactor
Databases

Journal citation report

(Unavailable at AUT)

Scopus

Scopus

SCImago

Scopus

SCImago

Google Scholar

Eigenfactor

Find details of these metrics in the following sections.

CiteScore

CiteScore: a journal metric created by Scopus in 2016. 

CiteScore is based on the number of citations to documents (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.

       

On each journal's CiteScore page, you will also find CiteScore rank, CiteScore quartile, CiteScore percentile and CiteScoreTracker.

CiteScoreTracker 2020

  • This is the current indication, updated monthly. You can find it on each journal's record in Scopus along with CiteScore 2019.

Find CiteScore

  • Go to Scopus > click Sources > search for a journal > find CiteScore on the journal page

Lower CiteScore than Impact Factor?

  • CiteScore includes all document types in the calculation, whereas the Journal Impact Factor calculates only “citable items”, such as articles and reviews. This is why CiteScore is usually lower than Impact factor. However, it is not necessary to compare two different metrics by their numbers.

Compare journals in Scopus

Go to  Compare Journals on Scopus, you can compare up to 10 journals using a variety of parameters including CiteScore, SJR and SNIP

SCImago Journal Rank (SJR)

SCImago Journal Rank

SJR is a prestige metric weighted by the prestige of a journal. Citations are weighted depending on where they come from. The number of citations received and the importance or prestige of the journals where such citations come from are used for measuring the influence of the journal. A citation from a high SJR jouranl has more value than a citation from a lower SJR journal.

Subject field, quality and reputation of the journal have a direct effect on the value of a citation. SJR normalises differences of citation behaviour in different subjects.

Find SJR metrics

  • from SCImago website. SCImago also provides journal ranking information by subjects and countries
  • from Scopus - click Sources > search a journal title > find SJR on the journal record

Journal impact factor

Journal impact factor (JIF) or Impact factor (IF) is the widely quoted journal metric.

  • Impact factor is calculated in a two year window
  • The latest JIF year is 2020
  • An impact factor in 2020 is calculated as:

       

Journals indexed by Web of Science may provide JIF details on their websites. 

Journal Citation Indicator

The Journal Citation Indicator (JCI) is a new metric created by Clarivate.

JCI is the average Category Normalized Citation Impact (CNCI) of citable items (articles & reviews) published by a journal over a recent three year period. The average JCI in a category is 1. A journal with a JCI 1.5 means that this journal has 50% more citation impact than the average in the same category.

SNIP

SNIP (Source Normalized Impact per Paper) measures contextual citation impact by weighting citations based on the total number of citations in a subject field. SNIP is the ratio of a source's average citation count per paper, and the 'citation potential' of its subject field. It aims to allow direct comparison of sources in different subject fields.

Find additional information on the CWTS Journal Indicators website:

  • Go to Indicators page, select your research subject to find a list of journals ranked by SNIP 
  • CWTS indicators are calculated based on the sources indexed by Scopus  

h5-index (Google Scholar)

Google Scholar Metrics

h5-index is the h-index for articles published in the last 5 complete years. It is the largest number h that h articles published in last 5 years have at least been citated h times.

h5-median of a publication- the median number of citations for the articles that make up its h5-index.

You can browse the metrics of the top 100 publications on the Google Scholar website:

  • Top 100 publications.
  • Click Categories to find top 20 publications for a subject category. Each subject also contains a number of subcategories.

        

        

 

Eigenfactor

Eigenfactor

  • The key scores used by Eigenfactor are Eigenfactor Score and Article Influence Score. Both use 5 year citation data and the whole citation network to account the citation differences across disciplines. The scores are better used for some research areas that articles are not frequently cited until several years after publication.
  • Eigenfactor is the measure of the journal's total importance to the scientific community.
  • An Article influence score greater than 1.00 indicates that the articles in a journal have an above-average influence in the journal's subject category.
  • Each journal belongs to only one category
  • Eigenfactor metrics are freely available and are also included in the Journal Citation Reports database

 

Search to find a journal's Eigenfactor