Bibliometric performance indicators

To display the bibliometric performance data for a journal, click the link “bibliometric performance” in the left pane of the All about the journal page. The information is available only for journals subject to quality control in SCIndeks.

The following aspects of bibliometric performance are covered:

  • two- and five-year journal Impact Factor based on the Web of Science and SCIndeks data,
  • impact profile,
  • content utilization based on the number of visits and full-text downloads,
  • bibliometric quality.

Bibliometric quality is determined based on the following indicators:

  • for impact

JCR/WoS Impact Factor Two (JCR/WoS IF2)

The sum of citations received in the specified year in WoS for the papers published in the previous two years, divided by the number of papers published in the journal in the same period; the value of WoS IF2 is taken from JCR if available; for non-JCR journals and the volumes not covered by JCR, WoS IF2 is determined by counting citations received WoS and is calculated using the same formula.

JCR/WoS Impact Factor Five (JCR/WoS IF5)

The sum of citations received in the specified year in WoS for the papers published in the previous five years, divided by the number of papers published in the journal in the same period; the value of WoS IF5 is taken from JCR if available; for non-JCR journals and the volumes not covered by JCR, WoS IF5 is determined by counting citations received WoS and is calculated using the same formula.

CEON WoS Impact Factor Two (CEON WoS IF2) The indicator calculated by CEON/CEES for journals not listed in JCR, using the same formula as in JCR for two-year citation window (JCR/WoS IF2)
CEON WoS Impact Factor Five (CEON WoS IF5) The indicator calculated by CEON/CEES for journals not listed in JCR, using the same formula as in JCR for five- year citation window (JCR/WoS IF5)
CEON Impact Factor Two (CEON IF2) The sum of citations received in the specified year in SCIndeks and WoS for the papers published in the previous two years, divided by the number of papers published in the journal in the same period; before summing up, the citations received in WoS journals are weighted according to the formula: ISI a-citation = 2, ISI h-citation = 3, ISI i-citation = 5
CEON Impact Factor Five (CEON IF5) The sum of hetero-citations received in the specified year in SCIndeks and WoS for the papers published in the previous five years, divided by the number of papers published in the journal in the same period; before summing up, the citations received in WoS journals are weighted according to the formula: ISI a-citation = 2, ISI h-citation = 3, ISI i-citation = 5

where:

a-citations

author self-citations, when local authors cite their own papers (regardless of the publication year of the cited paper)

h-citations

citations by local authors, when local authors cite papers of other local authors, i.e. papers in which they were not involved as authors (regardless of the publication year of the cited paper)

i-citations

citations by international authors, i.e. citations received from authors affiliated with international institutions (regardless of the publication year of the cited paper and regardless of whether they cite their own paper)

 

  • for impact profile

Journal author concentration index

The share (%) of articles by authors from different academic institutions in the total number of articles published under academic affiliations

Author internationality index

The share (%) of articles by authors affiliated with international institutions in the total number of articles (not including articles co-authored with local authors)

Average age of references

The mean median age of cited references expressed in years

Self-citation rate

The percentage of self-citations in the total number of citations

 

  • for utilization

Visits to journal details pages

The total number of visits to journal details pages

Visits to article metadata

The total number of visits to article metadata pages

Full-text downloads

The total number of full-text downloads

 

  • for bibliometric quality

Metadata quality

Completeness of metadata used to describe papers according to international standards

Academic integrity

Compliance with publishing, ethical and reviewing standards and procedures

Visibility and availability

Ensuring conditions for locating and downloading files easily

Transparency of editing

Organizational efficiency and the transparency of editorial procedures

Internationality

The share of papers in international languages and papers by international authors

Publishing quality

Publishing and methodological rigorousness in applying international scientific standards