Scimago Journal & Country Rank

Journal of Complexity

Country United States  - SIR icon SIR Ranking of United States
H Index
Subject Area and CategoryMathematics
Algebra and Number Theory
Applied Mathematics
Control and Optimization
Mathematics (miscellaneous)
Numerical Analysis
Statistics and Probability
PublisherElsevier Inc.
Publication typeJournals
ISSN0885064X, 10902708
Scope The multidisciplinary Journal of Complexity publishes original research papers that contain substantial mathematical results on complexity as broadly conceived. Outstanding review papers will also be published. In the area of computational complexity, the focus is on complexity over the reals, with the emphasis on lower bounds and optimal algorithms. The Journal of Complexity also publishes articles that provide major new algorithms or make important progress on upper bounds. Other models of computation, such as the Turing machine model, are also of interest. A new area is quantum computing. Computational complexity results in a wide variety of areas are solicited.


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The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

Algebra and Number Theory1999Q3
Algebra and Number Theory2000Q3
Algebra and Number Theory2001Q3
Algebra and Number Theory2002Q2
Algebra and Number Theory2003Q2
Algebra and Number Theory2004Q1
Algebra and Number Theory2005Q1
Algebra and Number Theory2006Q1
Algebra and Number Theory2007Q1
Algebra and Number Theory2008Q1
Algebra and Number Theory2009Q1
Algebra and Number Theory2010Q2
Algebra and Number Theory2011Q2
Algebra and Number Theory2012Q1
Algebra and Number Theory2013Q1
Algebra and Number Theory2014Q1
Algebra and Number Theory2015Q1
Algebra and Number Theory2016Q1
Algebra and Number Theory2017Q1
Algebra and Number Theory2018Q2
Applied Mathematics1999Q2
Applied Mathematics2000Q2
Applied Mathematics2001Q2
Applied Mathematics2002Q2
Applied Mathematics2003Q1
Applied Mathematics2004Q1
Applied Mathematics2005Q1
Applied Mathematics2006Q1
Applied Mathematics2007Q2
Applied Mathematics2008Q1
Applied Mathematics2009Q2
Applied Mathematics2010Q2
Applied Mathematics2011Q2
Applied Mathematics2012Q1
Applied Mathematics2013Q1
Applied Mathematics2014Q1
Applied Mathematics2015Q1
Applied Mathematics2016Q1
Applied Mathematics2017Q2
Applied Mathematics2018Q2
Control and Optimization1999Q2
Control and Optimization2000Q3
Control and Optimization2001Q3
Control and Optimization2002Q2
Control and Optimization2003Q1
Control and Optimization2004Q1
Control and Optimization2005Q1
Control and Optimization2006Q1
Control and Optimization2007Q2
Control and Optimization2008Q1
Control and Optimization2009Q1
Control and Optimization2010Q2
Control and Optimization2011Q2
Control and Optimization2012Q1
Control and Optimization2013Q1
Control and Optimization2014Q1
Control and Optimization2015Q1
Control and Optimization2016Q1
Control and Optimization2017Q1
Control and Optimization2018Q1
Mathematics (miscellaneous)2018Q2
Numerical Analysis1999Q3
Numerical Analysis2000Q3
Numerical Analysis2001Q3
Numerical Analysis2002Q3
Numerical Analysis2003Q2
Numerical Analysis2004Q1
Numerical Analysis2005Q1
Numerical Analysis2006Q1
Numerical Analysis2007Q2
Numerical Analysis2008Q2
Numerical Analysis2009Q2
Numerical Analysis2010Q2
Numerical Analysis2011Q3
Numerical Analysis2012Q1
Numerical Analysis2013Q1
Numerical Analysis2014Q1
Numerical Analysis2015Q1
Numerical Analysis2016Q1
Numerical Analysis2017Q2
Numerical Analysis2018Q2
Statistics and Probability1999Q3
Statistics and Probability2000Q3
Statistics and Probability2001Q3
Statistics and Probability2002Q2
Statistics and Probability2003Q2
Statistics and Probability2004Q1
Statistics and Probability2005Q2
Statistics and Probability2006Q1
Statistics and Probability2007Q2
Statistics and Probability2008Q2
Statistics and Probability2009Q2
Statistics and Probability2010Q2
Statistics and Probability2011Q3
Statistics and Probability2012Q1
Statistics and Probability2013Q1
Statistics and Probability2014Q1
Statistics and Probability2015Q1
Statistics and Probability2016Q2
Statistics and Probability2017Q2
Statistics and Probability2018Q2

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per documentYearValue
Cites / Doc. (4 years)19990.913
Cites / Doc. (4 years)20000.848
Cites / Doc. (4 years)20011.115
Cites / Doc. (4 years)20020.885
Cites / Doc. (4 years)20031.061
Cites / Doc. (4 years)20041.327
Cites / Doc. (4 years)20051.489
Cites / Doc. (4 years)20061.639
Cites / Doc. (4 years)20071.280
Cites / Doc. (4 years)20081.169
Cites / Doc. (4 years)20091.309
Cites / Doc. (4 years)20101.311
Cites / Doc. (4 years)20111.712
Cites / Doc. (4 years)20121.875
Cites / Doc. (4 years)20132.195
Cites / Doc. (4 years)20142.795
Cites / Doc. (4 years)20151.511
Cites / Doc. (4 years)20161.382
Cites / Doc. (4 years)20171.416
Cites / Doc. (4 years)20181.193
Cites / Doc. (3 years)19990.913
Cites / Doc. (3 years)20000.919
Cites / Doc. (3 years)20010.949
Cites / Doc. (3 years)20020.811
Cites / Doc. (3 years)20031.131
Cites / Doc. (3 years)20041.413
Cites / Doc. (3 years)20051.539
Cites / Doc. (3 years)20061.567
Cites / Doc. (3 years)20071.102
Cites / Doc. (3 years)20081.137
Cites / Doc. (3 years)20091.211
Cites / Doc. (3 years)20101.496
Cites / Doc. (3 years)20111.416
Cites / Doc. (3 years)20121.890
Cites / Doc. (3 years)20132.137
Cites / Doc. (3 years)20142.215
Cites / Doc. (3 years)20151.540
Cites / Doc. (3 years)20161.306
Cites / Doc. (3 years)20171.357
Cites / Doc. (3 years)20181.177
Cites / Doc. (2 years)19990.918
Cites / Doc. (2 years)20000.625
Cites / Doc. (2 years)20010.600
Cites / Doc. (2 years)20020.938
Cites / Doc. (2 years)20031.260
Cites / Doc. (2 years)20041.385
Cites / Doc. (2 years)20051.384
Cites / Doc. (2 years)20061.380
Cites / Doc. (2 years)20070.966
Cites / Doc. (2 years)20081.041
Cites / Doc. (2 years)20091.352
Cites / Doc. (2 years)20101.119
Cites / Doc. (2 years)20111.662
Cites / Doc. (2 years)20121.667
Cites / Doc. (2 years)20131.779
Cites / Doc. (2 years)20142.207
Cites / Doc. (2 years)20151.507
Cites / Doc. (2 years)20161.279
Cites / Doc. (2 years)20171.322
Cites / Doc. (2 years)20181.063
Total Cites 

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Self Cites199910
Self Cites200010
Self Cites200120
Self Cites200224
Self Cites200344
Self Cites200451
Self Cites200534
Self Cites200636
Self Cites200729
Self Cites200819
Self Cites200911
Self Cites201021
Self Cites201125
Self Cites201224
Self Cites201324
Self Cites201450
Self Cites201539
Self Cites201631
Self Cites201747
Self Cites201817
Total Cites199973
Total Cites200068
Total Cites200174
Total Cites200273
Total Cites2003121
Total Cites2004178
Total Cites2005217
Total Cites2006221
Total Cites2007151
Total Cites2008158
Total Cites2009161
Total Cites2010178
Total Cites2011143
Total Cites2012189
Total Cites2013218
Total Cites2014206
Total Cites2015154
Total Cites2016145
Total Cites2017175
Total Cites2018146
External Cites per Doc 
Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

External Cites per document19990.788
External Cites per document20000.784
External Cites per document20010.692
External Cites per document20020.544
External Cites per document20030.720
External Cites per document20041.008
External Cites per document20051.298
External Cites per document20061.312
External Cites per document20070.891
External Cites per document20081.000
External Cites per document20091.128
External Cites per document20101.319
External Cites per document20111.168
External Cites per document20121.650
External Cites per document20131.902
External Cites per document20141.677
External Cites per document20151.150
External Cites per document20161.027
External Cites per document20170.992
External Cites per document20181.040
Cites per document19990.913
Cites per document20000.919
Cites per document20010.949
Cites per document20020.811
Cites per document20031.131
Cites per document20041.413
Cites per document20051.539
Cites per document20061.567
Cites per document20071.102
Cites per document20081.137
Cites per document20091.211
Cites per document20101.496
Cites per document20111.416
Cites per document20121.890
Cites per document20132.137
Cites per document20142.215
Cites per document20151.540
Cites per document20161.306
Cites per document20171.357
Cites per document20181.177
% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

YearInternational Collaboration
Citable documents 
Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Non-citable documents19990
Non-citable documents20000
Non-citable documents20010
Non-citable documents20023
Non-citable documents20036
Non-citable documents20049
Non-citable documents20059
Non-citable documents20068
Non-citable documents20079
Non-citable documents20088
Non-citable documents20097
Non-citable documents20104
Non-citable documents20113
Non-citable documents20124
Non-citable documents20133
Non-citable documents20143
Non-citable documents20152
Non-citable documents20164
Non-citable documents20174
Non-citable documents20183
Citable documents199980
Citable documents200074
Citable documents200178
Citable documents200290
Citable documents2003107
Citable documents2004126
Citable documents2005141
Citable documents2006141
Citable documents2007137
Citable documents2008139
Citable documents2009133
Citable documents2010119
Citable documents2011101
Citable documents2012100
Citable documents2013102
Citable documents201493
Citable documents2015100
Citable documents2016111
Citable documents2017129
Citable documents2018124
Cited documents 
Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Uncited documents199941
Uncited documents200047
Uncited documents200148
Uncited documents200256
Uncited documents200367
Uncited documents200457
Uncited documents200563
Uncited documents200661
Uncited documents200779
Uncited documents200865
Uncited documents200968
Uncited documents201057
Uncited documents201149
Uncited documents201244
Uncited documents201337
Uncited documents201429
Uncited documents201538
Uncited documents201645
Uncited documents201753
Uncited documents201851
Cited documents199939
Cited documents200027
Cited documents200130
Cited documents200237
Cited documents200346
Cited documents200478
Cited documents200587
Cited documents200688
Cited documents200767
Cited documents200882
Cited documents200972
Cited documents201066
Cited documents201155
Cited documents201260
Cited documents201368
Cited documents201467
Cited documents201564
Cited documents201670
Cited documents201780
Cited documents201876
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