Impact Factor & Ranking

1.6 1.2 0.8 0.4 0.824 2015 2016 2017 2018 2019 0.824 2015 2016 2017 2018 2019
  • 1 254
    #110
  • 1 82
    #58
  • 1 255
    #224
  • 1 83
    #80
  • 1 252
    #231
  • 1 83
    #79
  • 1 254
    #182
  • 1 84
    #75
  • 1 260
    #187
  • 1 83
    #75

About Impact Factor & Ranking

Measure of the number of times an average paper in this journal is cited. Copyright Clarivate Analytics.

Metrics

Year I.F. Mathematics, applied Operations research & management science
2019 0.824 187/260 75/83
2018 182/254 75/84
2017 231/252 79/83
2016 224/255 80/83
2015 110/254 58/82

Definition

Impact Factor

The Journal Impact Factor is published each year by Clarivate Analytics. It is a measure of the number of times an average paper in a particular journal is cited during the preceding two years.
For example:

A = the number of times articles published in a specific journal in 2014 and 2015 were cited by journals during 2016.
B = the total number of 'citable items' published by that journal in 2014 and 2015. ('Citable items' are usually articles, reviews, proceedings, etc.; not editorials or letters-to-the-editor.)

2016 impact factor = A/B.

Actual value is intentionally only displayed for the most recent year. Earlier values are available in the Journal Citation Reports from Clarivate Analytics

ISI ranking

Journals are often ranked by Impact Factor in an appropriate Clarivate Analytics subject category. As there are now two Impact Factors published – two-year and five-year Impact Factors – this rank may differ, so care is needed when assessing these ranked lists to understand which of the two metrics is being used. In addition, journals can be categorized in multiple subject categories, giving them different ranks for each subject. Consequently, a rank should always be in context to the subject category.