Scimago Journal & Country Rank

Journal of Computer and System Sciences

CountryUnited States
72
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 (source)
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 Mathematics1997Q1
Applied Mathematics1998Q2
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 Mathematics2014Q1
Applied Mathematics2015Q1
Applied Mathematics2016Q2
Computational Theory and Mathematics1997Q1
Computational Theory and Mathematics1998Q2
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 Mathematics2015Q2
Computational Theory and Mathematics2016Q2
Computer Networks and Communications1997Q1
Computer Networks and Communications1998Q1
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
Theoretical Computer Science1997Q1
Theoretical Computer Science1998Q1
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
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
19990.663
20000.826
20011.523
20021.883
20031.945
20041.321
20051.212
20061.547
20071.647
20081.493
20091.363
20101.485
20111.343
20121.394
20131.181
20141.082
20151.117
20160.645
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)19990.894
Cites / Doc. (4 years)20001.050
Cites / Doc. (4 years)20011.743
Cites / Doc. (4 years)20021.443
Cites / Doc. (4 years)20032.059
Cites / Doc. (4 years)20041.775
Cites / Doc. (4 years)20051.908
Cites / Doc. (4 years)20062.062
Cites / Doc. (4 years)20072.126
Cites / Doc. (4 years)20082.051
Cites / Doc. (4 years)20092.134
Cites / Doc. (4 years)20102.335
Cites / Doc. (4 years)20112.384
Cites / Doc. (4 years)20122.484
Cites / Doc. (4 years)20132.560
Cites / Doc. (4 years)20142.622
Cites / Doc. (4 years)20152.779
Cites / Doc. (4 years)20162.694
Cites / Doc. (3 years)19990.894
Cites / Doc. (3 years)20001.101
Cites / Doc. (3 years)20011.367
Cites / Doc. (3 years)20021.429
Cites / Doc. (3 years)20032.083
Cites / Doc. (3 years)20041.357
Cites / Doc. (3 years)20051.900
Cites / Doc. (3 years)20062.077
Cites / Doc. (3 years)20071.758
Cites / Doc. (3 years)20081.856
Cites / Doc. (3 years)20091.915
Cites / Doc. (3 years)20102.320
Cites / Doc. (3 years)20112.347
Cites / Doc. (3 years)20122.564
Cites / Doc. (3 years)20132.416
Cites / Doc. (3 years)20142.695
Cites / Doc. (3 years)20152.997
Cites / Doc. (3 years)20162.424
Cites / Doc. (2 years)19990.915
Cites / Doc. (2 years)20000.764
Cites / Doc. (2 years)20011.303
Cites / Doc. (2 years)20021.367
Cites / Doc. (2 years)20031.313
Cites / Doc. (2 years)20041.185
Cites / Doc. (2 years)20051.946
Cites / Doc. (2 years)20061.730
Cites / Doc. (2 years)20071.525
Cites / Doc. (2 years)20081.656
Cites / Doc. (2 years)20091.831
Cites / Doc. (2 years)20102.180
Cites / Doc. (2 years)20112.506
Cites / Doc. (2 years)20122.188
Cites / Doc. (2 years)20132.414
Cites / Doc. (2 years)20142.800
Cites / Doc. (2 years)20152.603
Cites / Doc. (2 years)20162.120
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 Cites200410
Self Cites20059
Self Cites200614
Self Cites200712
Self Cites20088
Self Cites20095
Self Cites20108
Self Cites201116
Self Cites201214
Self Cites20138
Self Cites201427
Self Cites201530
Self Cites20167
Total Cites1999177
Total Cites2000196
Total Cites2001216
Total Cites2002243
Total Cites2003300
Total Cites2004266
Total Cites2005382
Total Cites2006461
Total Cites2007327
Total Cites2008347
Total Cites2009406
Total Cites2010413
Total Cites2011399
Total Cites2012418
Total Cites2013592
Total Cites2014725
Total Cites2015902
Total Cites2016686
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 document19990.813
External Cites per document20001.022
External Cites per document20011.304
External Cites per document20021.406
External Cites per document20031.958
External Cites per document20041.306
External Cites per document20051.856
External Cites per document20062.014
External Cites per document20071.694
External Cites per document20081.813
External Cites per document20091.892
External Cites per document20102.275
External Cites per document20112.253
External Cites per document20122.479
External Cites per document20132.384
External Cites per document20142.595
External Cites per document20152.897
External Cites per document20162.399
Cites per document19990.894
Cites per document20001.101
Cites per document20011.367
Cites per document20021.429
Cites per document20032.083
Cites per document20041.357
Cites per document20051.900
Cites per document20062.077
Cites per document20071.758
Cites per document20081.856
Cites per document20091.915
Cites per document20102.320
Cites per document20112.347
Cites per document20122.564
Cites per document20132.416
Cites per document20142.695
Cites per document20152.997
Cites per document20162.424
% 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
200130.77
200255.56
200336.11
200439.39
200531.03
200624.29
200744.44
200839.77
200931.25
201042.19
201140.74
201238.52
201346.67
201441.18
201541.94
201644.87
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 documents201114
Non-citable documents201214
Non-citable documents201322
Non-citable documents201424
Non-citable documents201530
Non-citable documents201650
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
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 documents1999111
Uncited documents200099
Uncited documents200169
Uncited documents200290
Uncited documents200372
Uncited documents2004106
Uncited documents200578
Uncited documents200691
Uncited documents200780
Uncited documents200885
Uncited documents2009102
Uncited documents201074
Uncited documents201166
Uncited documents201258
Uncited documents201392
Uncited documents201498
Uncited documents2015121
Uncited documents2016140
Cited documents199987
Cited documents200079
Cited documents200191
Cited documents200286
Cited documents200379
Cited documents2004103
Cited documents2005132
Cited documents2006141
Cited documents2007114
Cited documents2008115
Cited documents2009128
Cited documents2010118
Cited documents2011118
Cited documents2012119
Cited documents2013175
Cited documents2014195
Cited documents2015210
Cited documents2016193
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