While choosing a journal for your publication, one of the important things to take into account is journal metrics.
Journal metrics are used in order to "measure" the journal, research impact and the research outputs.
Journal Impact Factor (JIF)
The journal impact factor is the average number of citations received in a year by articles published in a journal in the previous two years. e.g. a journal’s JIF for the year 2015 is calculated as follows:
Journal Citation Reports (JCR) is produced by Clarivate Analytics (formerly Thomson Reuters). JCR is a subscription-based product based on data from the Web of Science. JCR is the original journal ranking tool, first developed in the 1950s, and it is the current market leader for journal rankings.
JCR allows you to search for individual journals or to compare groups of journals by subject category. JCR provides a range of metrics for each journal, covering impact over 2 and 5 years, how quickly things get cited, if citing continues over a long period of time and others. JCR also provides the eigenfactor metrics.
The Eigenfactor score - is a journal's measure of total importance to the scientific community.
Citescore is the total number of citations of articles within a journal in the previous 3 years divided by the total number of articles published within those same 3 years.
Scimago Journal Rank (SJR) is the average of citations received in a year weighted against quality and discipline criteria divided by articles published within that journal in the previous 3 years.
Source Normalized Impact per Paper (SNIP) is the number of citations of articles within a journal divided by expected citations within a subject field.
