Scimago Journal & Country Rank

Journal of Computer and System Sciences

Country United States  - SIR icon SIR Ranking of United States
78
H Index
Subject Area and CategoryComputer Science
Computational Theory and Mathematics
Computer Networks and Communications

Mathematics
Applied Mathematics
Theoretical Computer Science
PublisherElsevier Inc.
Publication typeJournals
ISSN10902724, 00220000
Coverage1967-ongoing
Scope Research areas include traditional subjects such as: • Theory of algorithms and computability • Formal languages • Automata theory Contemporary subjects such as: • Complexity theory • Algorithmic Complexity • Parallel & distributed computing • Computer networks • Neural networks • Computational learning theory • Database theory & practice • Computer modeling of complex systems

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Quartiles

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.

CategoryYearQuartile
Applied Mathematics1999Q2
Applied Mathematics2000Q2
Applied Mathematics2001Q1
Applied Mathematics2002Q1
Applied Mathematics2003Q1
Applied Mathematics2004Q1
Applied Mathematics2005Q1
Applied Mathematics2006Q1
Applied Mathematics2007Q1
Applied Mathematics2008Q1
Applied Mathematics2009Q1
Applied Mathematics2010Q1
Applied Mathematics2011Q1
Applied Mathematics2012Q1
Applied Mathematics2013Q1
Applied Mathematics2014Q2
Applied Mathematics2015Q2
Applied Mathematics2016Q2
Applied Mathematics2017Q2
Computational Theory and Mathematics1999Q2
Computational Theory and Mathematics2000Q2
Computational Theory and Mathematics2001Q1
Computational Theory and Mathematics2002Q1
Computational Theory and Mathematics2003Q1
Computational Theory and Mathematics2004Q1
Computational Theory and Mathematics2005Q1
Computational Theory and Mathematics2006Q1
Computational Theory and Mathematics2007Q1
Computational Theory and Mathematics2008Q1
Computational Theory and Mathematics2009Q1
Computational Theory and Mathematics2010Q1
Computational Theory and Mathematics2011Q1
Computational Theory and Mathematics2012Q1
Computational Theory and Mathematics2013Q1
Computational Theory and Mathematics2014Q1
Computational Theory and Mathematics2015Q1
Computational Theory and Mathematics2016Q2
Computational Theory and Mathematics2017Q2
Computer Networks and Communications1999Q1
Computer Networks and Communications2000Q1
Computer Networks and Communications2001Q1
Computer Networks and Communications2002Q1
Computer Networks and Communications2003Q1
Computer Networks and Communications2004Q1
Computer Networks and Communications2005Q1
Computer Networks and Communications2006Q1
Computer Networks and Communications2007Q1
Computer Networks and Communications2008Q1
Computer Networks and Communications2009Q1
Computer Networks and Communications2010Q1
Computer Networks and Communications2011Q1
Computer Networks and Communications2012Q1
Computer Networks and Communications2013Q1
Computer Networks and Communications2014Q1
Computer Networks and Communications2015Q1
Computer Networks and Communications2016Q1
Computer Networks and Communications2017Q1
Theoretical Computer Science1999Q2
Theoretical Computer Science2000Q1
Theoretical Computer Science2001Q1
Theoretical Computer Science2002Q1
Theoretical Computer Science2003Q1
Theoretical Computer Science2004Q1
Theoretical Computer Science2005Q1
Theoretical Computer Science2006Q1
Theoretical Computer Science2007Q1
Theoretical Computer Science2008Q1
Theoretical Computer Science2009Q1
Theoretical Computer Science2010Q1
Theoretical Computer Science2011Q1
Theoretical Computer Science2012Q1
Theoretical Computer Science2013Q1
Theoretical Computer Science2014Q1
Theoretical Computer Science2015Q1
Theoretical Computer Science2016Q2
Theoretical Computer Science2017Q2
SJR

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.

YearSJR
19990.577
20000.683
20011.345
20021.582
20031.706
20041.114
20051.031
20061.352
20071.612
20081.330
20091.355
20101.314
20111.240
20121.369
20131.141
20141.036
20151.046
20160.638
20170.545
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)19990.919
Cites / Doc. (4 years)20001.081
Cites / Doc. (4 years)20011.792
Cites / Doc. (4 years)20021.470
Cites / Doc. (4 years)20032.102
Cites / Doc. (4 years)20041.811
Cites / Doc. (4 years)20051.947
Cites / Doc. (4 years)20062.105
Cites / Doc. (4 years)20072.154
Cites / Doc. (4 years)20082.083
Cites / Doc. (4 years)20092.157
Cites / Doc. (4 years)20102.368
Cites / Doc. (4 years)20112.409
Cites / Doc. (4 years)20122.516
Cites / Doc. (4 years)20132.582
Cites / Doc. (4 years)20142.625
Cites / Doc. (4 years)20152.859
Cites / Doc. (4 years)20162.823
Cites / Doc. (4 years)20172.431
Cites / Doc. (3 years)19990.919
Cites / Doc. (3 years)20001.146
Cites / Doc. (3 years)20011.399
Cites / Doc. (3 years)20021.465
Cites / Doc. (3 years)20032.132
Cites / Doc. (3 years)20041.383
Cites / Doc. (3 years)20051.940
Cites / Doc. (3 years)20062.122
Cites / Doc. (3 years)20071.780
Cites / Doc. (3 years)20081.866
Cites / Doc. (3 years)20091.939
Cites / Doc. (3 years)20102.354
Cites / Doc. (3 years)20112.382
Cites / Doc. (3 years)20122.601
Cites / Doc. (3 years)20132.429
Cites / Doc. (3 years)20142.699
Cites / Doc. (3 years)20153.080
Cites / Doc. (3 years)20162.534
Cites / Doc. (3 years)20172.217
Cites / Doc. (2 years)19990.949
Cites / Doc. (2 years)20000.791
Cites / Doc. (2 years)20011.349
Cites / Doc. (2 years)20021.404
Cites / Doc. (2 years)20031.354
Cites / Doc. (2 years)20041.222
Cites / Doc. (2 years)20051.976
Cites / Doc. (2 years)20061.754
Cites / Doc. (2 years)20071.525
Cites / Doc. (2 years)20081.664
Cites / Doc. (2 years)20091.865
Cites / Doc. (2 years)20102.189
Cites / Doc. (2 years)20112.551
Cites / Doc. (2 years)20122.226
Cites / Doc. (2 years)20132.425
Cites / Doc. (2 years)20142.790
Cites / Doc. (2 years)20152.672
Cites / Doc. (2 years)20162.220
Cites / Doc. (2 years)20171.831
Total Cites 
Self-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.

CitesYearValue
Self Cites199916
Self Cites200014
Self Cites200110
Self Cites20024
Self Cites200318
Self Cites20049
Self Cites20059
Self Cites200614
Self Cites200712
Self Cites20088
Self Cites20095
Self Cites20108
Self Cites201116
Self Cites201214
Self Cites20138
Self Cites201427
Self Cites201530
Self Cites20168
Self Cites201714
Total Cites1999182
Total Cites2000204
Total Cites2001221
Total Cites2002249
Total Cites2003307
Total Cites2004271
Total Cites2005390
Total Cites2006471
Total Cites2007331
Total Cites2008349
Total Cites2009411
Total Cites2010419
Total Cites2011405
Total Cites2012424
Total Cites2013595
Total Cites2014726
Total Cites2015927
Total Cites2016717
Total Cites2017603
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.

CitesYearValue
External Cites per document19990.838
External Cites per document20001.067
External Cites per document20011.335
External Cites per document20021.441
External Cites per document20032.007
External Cites per document20041.337
External Cites per document20051.896
External Cites per document20062.059
External Cites per document20071.715
External Cites per document20081.824
External Cites per document20091.915
External Cites per document20102.309
External Cites per document20112.288
External Cites per document20122.515
External Cites per document20132.396
External Cites per document20142.599
External Cites per document20152.980
External Cites per document20162.505
External Cites per document20172.165
Cites per document19990.919
Cites per document20001.146
Cites per document20011.399
Cites per document20021.465
Cites per document20032.132
Cites per document20041.383
Cites per document20051.940
Cites per document20062.122
Cites per document20071.780
Cites per document20081.866
Cites per document20091.939
Cites per document20102.354
Cites per document20112.382
Cites per document20122.601
Cites per document20132.429
Cites per document20142.699
Cites per document20153.080
Cites per document20162.534
Cites per document20172.217
% 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
199942.62
200042.00
200135.38
200255.56
200336.11
200439.39
200531.03
200624.29
200744.44
200839.77
200931.25
201042.86
201141.25
201239.17
201346.67
201444.25
201544.83
201653.75
201750.00
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.

DocumentsYearValue
Non-citable documents19990
Non-citable documents20000
Non-citable documents20012
Non-citable documents20026
Non-citable documents20037
Non-citable documents200413
Non-citable documents20059
Non-citable documents200610
Non-citable documents20078
Non-citable documents200813
Non-citable documents200918
Non-citable documents201014
Non-citable documents201113
Non-citable documents201212
Non-citable documents201318
Non-citable documents201421
Non-citable documents201522
Non-citable documents201636
Non-citable documents201737
Citable documents1999198
Citable documents2000178
Citable documents2001158
Citable documents2002170
Citable documents2003144
Citable documents2004196
Citable documents2005201
Citable documents2006222
Citable documents2007186
Citable documents2008187
Citable documents2009212
Citable documents2010178
Citable documents2011170
Citable documents2012163
Citable documents2013245
Citable documents2014269
Citable documents2015301
Citable documents2016283
Citable documents2017272
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.

DocumentsYearValue
Uncited documents1999110
Uncited documents200098
Uncited documents200168
Uncited documents200288
Uncited documents200371
Uncited documents2004105
Uncited documents200577
Uncited documents200689
Uncited documents200780
Uncited documents200885
Uncited documents2009102
Uncited documents201074
Uncited documents201164
Uncited documents201256
Uncited documents201386
Uncited documents201494
Uncited documents2015111
Uncited documents2016122
Uncited documents2017138
Cited documents199988
Cited documents200080
Cited documents200192
Cited documents200288
Cited documents200380
Cited documents2004104
Cited documents2005133
Cited documents2006143
Cited documents2007114
Cited documents2008115
Cited documents2009128
Cited documents2010118
Cited documents2011119
Cited documents2012119
Cited documents2013177
Cited documents2014196
Cited documents2015212
Cited documents2016197
Cited documents2017171
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