Scimago Journal & Country Rank

Communications of the ACM

Country United States  - SIR icon SIR Ranking of United States
183
H Index
Subject Area and CategoryComputer Science
Computer Science (miscellaneous)
PublisherAssociation for Computing Machinery (ACM)
Publication typeJournals
ISSN00010782
Coverage1970-ongoing

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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
Computer Science (miscellaneous)1999Q1
Computer Science (miscellaneous)2000Q1
Computer Science (miscellaneous)2001Q1
Computer Science (miscellaneous)2002Q1
Computer Science (miscellaneous)2003Q1
Computer Science (miscellaneous)2004Q1
Computer Science (miscellaneous)2005Q1
Computer Science (miscellaneous)2006Q1
Computer Science (miscellaneous)2007Q1
Computer Science (miscellaneous)2008Q1
Computer Science (miscellaneous)2009Q1
Computer Science (miscellaneous)2010Q1
Computer Science (miscellaneous)2011Q1
Computer Science (miscellaneous)2012Q1
Computer Science (miscellaneous)2013Q1
Computer Science (miscellaneous)2014Q1
Computer Science (miscellaneous)2015Q1
Computer Science (miscellaneous)2016Q1
Computer Science (miscellaneous)2017Q1
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
19990.889
20001.098
20011.185
20021.304
20031.374
20041.388
20051.218
20061.012
20071.304
20081.243
20090.891
20100.858
20110.961
20120.914
20131.243
20141.141
20151.266
20160.991
20170.709
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)19991.659
Cites / Doc. (4 years)20001.988
Cites / Doc. (4 years)20012.243
Cites / Doc. (4 years)20022.110
Cites / Doc. (4 years)20032.634
Cites / Doc. (4 years)20042.968
Cites / Doc. (4 years)20053.676
Cites / Doc. (4 years)20063.893
Cites / Doc. (4 years)20074.195
Cites / Doc. (4 years)20084.399
Cites / Doc. (4 years)20093.961
Cites / Doc. (4 years)20104.000
Cites / Doc. (4 years)20114.120
Cites / Doc. (4 years)20124.477
Cites / Doc. (4 years)20134.537
Cites / Doc. (4 years)20145.335
Cites / Doc. (4 years)20154.764
Cites / Doc. (4 years)20164.805
Cites / Doc. (4 years)20174.230
Cites / Doc. (3 years)19991.659
Cites / Doc. (3 years)20001.943
Cites / Doc. (3 years)20012.078
Cites / Doc. (3 years)20022.243
Cites / Doc. (3 years)20032.559
Cites / Doc. (3 years)20042.553
Cites / Doc. (3 years)20054.045
Cites / Doc. (3 years)20063.763
Cites / Doc. (3 years)20074.052
Cites / Doc. (3 years)20084.086
Cites / Doc. (3 years)20093.976
Cites / Doc. (3 years)20103.804
Cites / Doc. (3 years)20114.213
Cites / Doc. (3 years)20123.893
Cites / Doc. (3 years)20135.000
Cites / Doc. (3 years)20144.359
Cites / Doc. (3 years)20154.716
Cites / Doc. (3 years)20164.461
Cites / Doc. (3 years)20173.820
Cites / Doc. (2 years)19991.565
Cites / Doc. (2 years)20001.621
Cites / Doc. (2 years)20012.289
Cites / Doc. (2 years)20022.026
Cites / Doc. (2 years)20031.982
Cites / Doc. (2 years)20042.726
Cites / Doc. (2 years)20053.952
Cites / Doc. (2 years)20063.442
Cites / Doc. (2 years)20073.596
Cites / Doc. (2 years)20083.843
Cites / Doc. (2 years)20093.621
Cites / Doc. (2 years)20103.625
Cites / Doc. (2 years)20113.558
Cites / Doc. (2 years)20124.423
Cites / Doc. (2 years)20133.866
Cites / Doc. (2 years)20144.286
Cites / Doc. (2 years)20154.345
Cites / Doc. (2 years)20163.840
Cites / Doc. (2 years)20173.492
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 Cites199942
Self Cites200043
Self Cites200130
Self Cites200249
Self Cites200363
Self Cites200464
Self Cites200554
Self Cites200639
Self Cites200729
Self Cites200828
Self Cites200936
Self Cites201035
Self Cites201144
Self Cites201231
Self Cites201328
Self Cites201441
Self Cites201541
Self Cites201633
Self Cites201731
Total Cites19991206
Total Cites20001434
Total Cites20011538
Total Cites20021716
Total Cites20032055
Total Cites20042073
Total Cites20052973
Total Cites20062619
Total Cites20072735
Total Cites20082746
Total Cites20092676
Total Cites20102929
Total Cites20113476
Total Cites20123317
Total Cites20133740
Total Cites20142938
Total Cites20152674
Total Cites20162177
Total Cites20171807
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 document19991.601
External Cites per document20001.885
External Cites per document20012.038
External Cites per document20022.179
External Cites per document20032.481
External Cites per document20042.474
External Cites per document20053.971
External Cites per document20063.707
External Cites per document20074.009
External Cites per document20084.045
External Cites per document20093.923
External Cites per document20103.758
External Cites per document20114.160
External Cites per document20123.857
External Cites per document20134.963
External Cites per document20144.298
External Cites per document20154.644
External Cites per document20164.393
External Cites per document20173.755
Cites per document19991.659
Cites per document20001.943
Cites per document20012.078
Cites per document20022.243
Cites per document20032.559
Cites per document20042.553
Cites per document20054.045
Cites per document20063.763
Cites per document20074.052
Cites per document20084.086
Cites per document20093.976
Cites per document20103.804
Cites per document20114.213
Cites per document20123.893
Cites per document20135.000
Cites per document20144.359
Cites per document20154.716
Cites per document20164.461
Cites per document20173.820
% 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
19998.12
20007.76
20015.56
20026.25
200318.36
200414.22
200512.70
200610.79
200712.83
200819.45
200912.76
20109.84
20116.81
20127.84
20137.49
20149.18
201510.34
201610.87
201711.30
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 documents19993
Non-citable documents20003
Non-citable documents20013
Non-citable documents20022
Non-citable documents20032
Non-citable documents20044
Non-citable documents20054
Non-citable documents200686
Non-citable documents2007194
Non-citable documents2008251
Non-citable documents2009264
Non-citable documents2010255
Non-citable documents2011311
Non-citable documents2012337
Non-citable documents2013367
Non-citable documents2014372
Non-citable documents2015402
Non-citable documents2016443
Non-citable documents2017473
Citable documents1999727
Citable documents2000738
Citable documents2001740
Citable documents2002765
Citable documents2003803
Citable documents2004812
Citable documents2005735
Citable documents2006696
Citable documents2007675
Citable documents2008672
Citable documents2009673
Citable documents2010770
Citable documents2011825
Citable documents2012852
Citable documents2013748
Citable documents2014674
Citable documents2015567
Citable documents2016488
Citable documents2017473
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 documents1999354
Uncited documents2000348
Uncited documents2001342
Uncited documents2002329
Uncited documents2003343
Uncited documents2004334
Uncited documents2005187
Uncited documents2006256
Uncited documents2007339
Uncited documents2008411
Uncited documents2009458
Uncited documents2010512
Uncited documents2011598
Uncited documents2012652
Uncited documents2013631
Uncited documents2014628
Uncited documents2015570
Uncited documents2016546
Uncited documents2017581
Cited documents1999376
Cited documents2000393
Cited documents2001401
Cited documents2002438
Cited documents2003462
Cited documents2004482
Cited documents2005552
Cited documents2006526
Cited documents2007530
Cited documents2008512
Cited documents2009479
Cited documents2010513
Cited documents2011538
Cited documents2012537
Cited documents2013484
Cited documents2014418
Cited documents2015399
Cited documents2016385
Cited documents2017365
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