Scimago Journal & Country Rank

Optimization Letters

Country Germany  - SIR icon SIR Ranking of Germany
H Index
Subject Area and CategoryMathematics
Control and Optimization
PublisherSpringer Verlag
Publication typeJournals
ISSN18624480, 18624472
Scope Optimization Letters is an international journal covering all aspects of optimization, including theory, algorithms, computational studies, and applications, and providing an outlet for rapid publication of short communications in the field. Originality, significance, quality and clarity are the essential criteria for choosing the material to be published. Optimization Letters has been expanding in all directions at an astonishing rate during the last few decades. New algorithmic and theoretical techniques have been developed, the diffusion into other disciplines has proceeded at a rapid pace, and our knowledge of all aspects of the field has grown even more profound.


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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.

Control and Optimization2008Q4
Control and Optimization2009Q3
Control and Optimization2010Q2
Control and Optimization2011Q2
Control and Optimization2012Q1
Control and Optimization2013Q2
Control and Optimization2014Q2
Control and Optimization2015Q2
Control and Optimization2016Q1
Control and Optimization2017Q2

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)20070.000
Cites / Doc. (4 years)20080.472
Cites / Doc. (4 years)20091.122
Cites / Doc. (4 years)20101.044
Cites / Doc. (4 years)20111.231
Cites / Doc. (4 years)20121.772
Cites / Doc. (4 years)20131.474
Cites / Doc. (4 years)20141.193
Cites / Doc. (4 years)20151.172
Cites / Doc. (4 years)20161.348
Cites / Doc. (4 years)20171.193
Cites / Doc. (3 years)20070.000
Cites / Doc. (3 years)20080.472
Cites / Doc. (3 years)20091.122
Cites / Doc. (3 years)20101.044
Cites / Doc. (3 years)20111.187
Cites / Doc. (3 years)20121.744
Cites / Doc. (3 years)20131.302
Cites / Doc. (3 years)20141.181
Cites / Doc. (3 years)20151.166
Cites / Doc. (3 years)20161.405
Cites / Doc. (3 years)20171.104
Cites / Doc. (2 years)20070.000
Cites / Doc. (2 years)20080.472
Cites / Doc. (2 years)20091.122
Cites / Doc. (2 years)20100.909
Cites / Doc. (2 years)20111.269
Cites / Doc. (2 years)20121.673
Cites / Doc. (2 years)20131.103
Cites / Doc. (2 years)20141.109
Cites / Doc. (2 years)20151.147
Cites / Doc. (2 years)20161.228
Cites / Doc. (2 years)20170.921
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 Cites20070
Self Cites20081
Self Cites20095
Self Cites20109
Self Cites201110
Self Cites201252
Self Cites201338
Self Cites201439
Self Cites201519
Self Cites201618
Self Cites201731
Total Cites20070
Total Cites200817
Total Cites200992
Total Cites2010141
Total Cites2011178
Total Cites2012279
Total Cites2013332
Total Cites2014412
Total Cites2015577
Total Cites2016604
Total Cites2017446
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 document20070
External Cites per document20080.444
External Cites per document20091.061
External Cites per document20100.978
External Cites per document20111.120
External Cites per document20121.419
External Cites per document20131.153
External Cites per document20141.069
External Cites per document20151.127
External Cites per document20161.363
External Cites per document20171.027
Cites per document20070.000
Cites per document20080.472
Cites per document20091.122
Cites per document20101.044
Cites per document20111.187
Cites per document20121.744
Cites per document20131.302
Cites per document20141.181
Cites per document20151.166
Cites per document20161.405
Cites per document20171.104
% 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 documents20070
Non-citable documents20081
Non-citable documents20092
Non-citable documents20102
Non-citable documents20111
Non-citable documents20120
Non-citable documents20134
Non-citable documents201410
Non-citable documents201515
Non-citable documents201613
Non-citable documents201716
Citable documents20070
Citable documents200836
Citable documents200982
Citable documents2010135
Citable documents2011150
Citable documents2012160
Citable documents2013255
Citable documents2014349
Citable documents2015495
Citable documents2016430
Citable documents2017404
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 documents20070
Uncited documents200828
Uncited documents200946
Uncited documents201077
Uncited documents201173
Uncited documents201250
Uncited documents2013113
Uncited documents2014164
Uncited documents2015249
Uncited documents2016194
Uncited documents2017203
Cited documents20070
Cited documents20089
Cited documents200938
Cited documents201060
Cited documents201178
Cited documents2012110
Cited documents2013146
Cited documents2014195
Cited documents2015261
Cited documents2016249
Cited documents2017217
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