Journal rankings · indicator year 2020
Choose a field to open its ranking, or a journal to find its row in its subfield’s list.
Subfield ranking · 2020
Computational Theory and Mathematics journal rankings 2020
112 ranked journals · Subfield in Computer Science
Computational Theory and Mathematics has 112 ranked journals in 2020. The median OJR fell 0.06 on 2019 to 0.43, below the world average of 1.00; Q1 starts at OJR 0.80. The top three are Swarm and Evolutionary Computation, Journal of Cheminformatics, and Memetic Computing.
Ranks and citation indicators: 2020. Journal access status and listed APC: source snapshot September 23, 2026.
Journals whose main subfield sits in this category and that published at least 30 citable documents (articles, reviews and conference papers) in 2017–2019, the window the 2020 score is computed on.
The OpenJournalRank Indicator (OJR) is a free, publicly available metric of a journal’s field-normalized citation impact, computed from open OpenAlex citation data. It compares citations to a journal’s papers from the previous three years with the world average for papers of the same subfield, year and type, so 1.00 is the world average and values can be compared across fields. It is computed with the NCI3 method.
The middle OJR among ranked journals in this category: half score higher, half lower. 1.00 is the world average for papers of the same subfield, year and type.
The dot is this category, the solid tick is the median of all ranked journals and the dashed line is the world average.
Share of ranked journals in this category that are fully open access, so every paper is free to read. Hybrid journals, which sell subscriptions and open single papers for a fee, are not counted.
Median list price of the article processing charge, in US dollars, among ranked journals in this category that list a price above zero. Journals with a listed APC of $0 and journals with no known price are left out of this median. The At a glance table below gives a second median that includes the $0 prices.
Subfields of Computer Science (11)
- Artificial Intelligence459
- Information Systems210
- Computer Vision and Pattern Recognition131
- Computer Networks and Communications130
- Computational Theory and Mathematics112
- Human-Computer Interaction24
- Computer Science Applications23
- Hardware and Architecture17
- Computer Graphics and Computer-Aided Design11
- Signal Processing8
- Software2
112 ranked journals
Filters
Rank is the position by OJR within the list on screen; 1 is the highest. | OJR is field-normalized 3-year citation impact: 1.00 is the world average for papers of the same subfield, year and type, so values compare across fields. The badge is the journal’s quartile in this list. | Citations per paper over a two-year window, counted from OpenAlex. It is not field-normalized, so compare it only between journals of the same field. ▲ or ▼ is the change from 2019. This is OpenJournalRank’s own count, not Clarivate’s Journal Impact Factor. | Citable documents (articles, reviews and conference papers) published in 2017–2019, the window the 2020 OJR is computed on. A journal needs at least 30 to be ranked. | Share of the journal’s 2017–2019 papers that are free to read in any open-access form. The green OA tag next to a title marks a fully open-access journal. | List price of the article processing charge in US dollars. “$0 listed” means the listed price is zero; a dash means no price is listed. | The line is the journal’s OJR from 2011 to 2020. | Compare |
|---|---|---|---|---|---|---|---|
1Swarm and Evolutionary ComputationElsevier BV · Netherlands | 3.97Q1 | 9.09 0.82 up from 2019 | 364 | 20% | $3,690 | ||
2Journal of CheminformaticsOABioMed Central · United Kingdom | 2.90Q1 | 6.76 0.19 down from 2019 | 209 | 100% | $2,390 | ||
3Memetic ComputingSpringer Science+Business Media · Germany | 1.95Q1 | 3.09 1.11 down from 2019 | 69 | 20% | $3,990 | ||
4Mathematical ProgrammingSpringer Science+Business Media · Germany | 1.75Q1 | 2.97 0.61 up from 2019 | 350 | 65% | $3,090 | ||
5Foundations of Computational MathematicsSpringer Science+Business Media · United States | 1.68Q1 | 2.33 0.12 up from 2019 | 92 | 92% | $2,290 | ||
6Fuzzy Sets and SystemsElsevier BV · Netherlands | 1.63Q1 | 3.61 0.10 up from 2019 | 626 | 26% | $2,550 | ||
7ACM Transactions on Mathematical SoftwareAssociation for Computing Machinery · United States | 1.62Q1 | 2.76 0.05 up from 2019 | 109 | 60% | — | ||
8Journal of the ACMAssociation for Computing Machinery · United States | 1.34Q1 | 2.24 0.47 down from 2019 | 147 | 68% | — | ||
| 1.27Q1 | 1.50 0.17 up from 2019 | 128 | 92% | — | |||
10Numerical AlgorithmsSpringer Science+Business Media · Netherlands | 1.21Q1 | 2.18 0.01 down from 2019 | 580 | 25% | $3,290 | ||
11Journal of Global OptimizationSpringer Science+Business Media · Netherlands | 1.18Q1 | 1.88 0.10 down from 2019 | 353 | 31% | $2,990 | ||
12Computational ToxicologyElsevier BV · Netherlands | 1.11Q1 | 3.40 0.54 up from 2019 | 111 | 59% | $3,870 | ||
13International Journal on Software Tools for Technology TransferSpringer Science+Business Media · Germany | 1.07Q1 | 1.63 0.46 down from 2019 | 99 | 61% | $3,290 | ||
14Formal Methods in System DesignSpringer Science+Business Media · Netherlands | 1.05Q1 | 1.36 0.59 down from 2019 | 71 | 44% | $2,390 | ||
15Journal of Optimization Theory and ApplicationsSpringer Science+Business Media · Netherlands | 1.04Q1 | 1.85 0.27 up from 2019 | 570 | 46% | $3,190 | ||
16Computational and Applied MathematicsSpringer Science+Business Media · Brazil | 1.04Q1 | 2.56 0.60 up from 2019 | 528 | 10% | $3,390 | ||
17Journal of Computer-Aided Molecular DesignSpringer Science+Business Media · Netherlands | 1.02Q1 | 3.51 0.51 up from 2019 | 256 | 49% | $4,190 | ||
18SIAM Journal on Matrix Analysis and ApplicationsSociety for Industrial and Applied Mathematics · United States | 1.00Q1 | 1.86 0.08 up from 2019 | 211 | 66% | — | ||
19Discrete Event Dynamic SystemsSpringer Science+Business Media · United States | 0.97Q1 | 1.76 0.16 down from 2019 | 61 | 53% | $3,290 | ||
20OptimizationTaylor & Francis · Netherlands | 0.95Q1 | 1.67 0.09 up from 2019 | 433 | 11% | — | ||
21Molecular InformaticsWiley · Germany | 0.94Q1 | 2.44 0.29 down from 2019 | 218 | 43% | $3,800 | ||
22Annals of Mathematical Sciences and ApplicationsInternational Press of Boston · United States | 0.92Q1 | 1.60 0.07 down from 2019 | 36 | 18% | — | ||
23SIAM Journal on ComputingSociety for Industrial and Applied Mathematics · United States | 0.91Q1 | 1.24 0.40 down from 2019 | 221 | 56% | — | ||
24SAR and QSAR in environmental researchTaylor & Francis · Switzerland | 0.89Q1 | 3.18 0.71 up from 2019 | 175 | 25% | — | ||
25Numerical Linear Algebra with ApplicationsWiley · United Kingdom | 0.89Q1 | 1.60 0.03 down from 2019 | 184 | 50% | $4,880 | ||
26Set-Valued and Variational AnalysisSpringer Science+Business Media · Netherlands | 0.88Q1 | 1.21 0.16 down from 2019 | 125 | 48% | $2,990 | ||
27Bulletin of the American Mathematical SocietyOAAmerican Mathematical Society · United States | 0.82Q1 | 0.86 0.17 up from 2019 | 56 | 100% | — | ||
28International Journal of General SystemsTaylor & Francis · Switzerland | 0.80Q1 | 2.04 0.07 up from 2019 | 135 | 22% | — | ||
29SIAM Journal on Applied Algebra and GeometrySociety for Industrial and Applied Mathematics · United States | 0.78Q2 | 1.28 0.58 down from 2019 | 86 | 85% | — | ||
30Optimization LettersSpringer Science+Business Media · Switzerland | 0.77Q2 | 1.23 0.11 up from 2019 | 405 | 35% | $3,090 | ||
31ACM Transactions on AlgorithmsAssociation for Computing Machinery · United States | 0.75Q2 | 1.18 0.02 up from 2019 | 157 | 70% | — | ||
32Multiscale Modeling and SimulationSociety for Industrial and Applied Mathematics · United States | 0.74Q2 | 1.87 0.25 down from 2019 | 178 | 50% | — | ||
33Linear and Multilinear AlgebraTaylor & Francis · Netherlands | 0.72Q2 | 1.12 0.24 up from 2019 | 724 | 24% | — | ||
34ETNA - Electronic Transactions on Numerical AnalysisUnited States | 0.71Q2 | 1.24 0.30 up from 2019 | 85 | 100% | — | ||
35Mathematical Methods of Operations ResearchSpringer Science+Business Media · Germany | 0.67Q2 | 1.13 0.22 down from 2019 | 126 | 64% | $2,990 | ||
| 0.67Q2 | 0.95 0.42 down from 2019 | 55 | 85% | — | |||
37Numerical Functional Analysis and OptimizationTaylor & Francis · United States | 0.66Q2 | 1.00 0.06 up from 2019 | 299 | 20% | — | ||
38Discrete OptimizationElsevier BV · Netherlands | 0.65Q2 | 1.23 0.24 up from 2019 | 96 | 100% | $2,760 | ||
39Journal of Combinatorial OptimizationSpringer Science+Business Media · Netherlands | 0.62Q2 | 1.26 0.09 up from 2019 | 390 | 16% | $3,190 | ||
40Journal of Applied and Computational TopologySpringer Science+Business Media · Switzerland | 0.60Q2 | 1.25 0.25 up from 2019 | 45 | 76% | $3,390 | ||
41SeMA JournalSpringer Science+Business Media · Italy | 0.59Q2 | 1.46 0.47 up from 2019 | 107 | 13% | $3,390 | ||
42Fundamenta InformaticaeIOS Press · Netherlands | 0.57Q2 | 1.23 0.35 down from 2019 | 427 | 36% | $4,150 | ||
43Information Processing LettersElsevier BV · Netherlands | 0.54Q2 | 1.14 0.09 up from 2019 | 373 | 54% | $2,590 | ||
44Journal of Symbolic ComputationElsevier BV · United Kingdom | 0.52Q2 | 0.87 0.17 up from 2019 | 236 | 99% | $3,160 | ||
45Applications of MathematicsSpringer Science+Business Media · Netherlands | 0.52Q2 | 0.94 0.31 up from 2019 | 94 | 95% | $2,990 | ||
46Journal of Computer and System SciencesElsevier BV · United States | 0.52Q2 | 0.97 0.48 down from 2019 | 194 | 100% | $2,610 | ||
47AKCE International Journal of Graphs and CombinatoricsOAElsevier BV · United States | 0.50Q2 | 0.48 0.23 down from 2019 | 177 | 100% | $1,226 | ||
48AlgorithmicaSpringer Science+Business Media · United States | 0.49Q2 | 0.81 0.07 down from 2019 | 352 | 72% | $3,290 | ||
49Discrete Applied MathematicsElsevier BV · Netherlands | 0.49Q2 | 0.99 0.12 up from 2019 | 1,214 | 97% | $3,090 | ||
50Vietnam Journal of MathematicsSpringer Nature · Vietnam | 0.49Q2 | 0.68 0.09 up from 2019 | 131 | 44% | $3,290 |
Subfields of Computer Science, with Computational Theory and Mathematics highlighted.
- Artificial Intelligence459
- Information Systems210
- Computer Vision and Pattern Recognition131
- Computer Networks and Communications130
- Computational Theory and Mathematics112
- Human-Computer Interaction24
- Computer Science Applications23
- Hardware and Architecture17
- Computer Graphics and Computer-Aided Design11
- Signal Processing8
- Software2
Journals
Citations made in 2020. Corpus-wide, 86.1% of core-journal articles and reviews published that year have at least one matched reference; the share varies by journal and field.
33 additional Computational Theory and Mathematics journals with metrics are unranked under this release’s eligibility rules: a journal needs at least 30 citable documents in 2017–2019, at least 80% of them with a subfield, and a positive world-average expectation. Ranks are within the whole category; filters hide rows without re-ranking. OJR excludes self-citations.
At a glance
Indicator year: 2020. Publication window: 2017–2019. How these summaries are calculated
- Ranked journals
- 112
- Window papers (baseline)
- 46,476 +3.1% from indicator year 2017
- Median OJR
- 0.43 -21.1% from indicator year 2017
- Rising journals (2025)
- 6
Window papers are the baseline paper population: citable papers (articles, reviews and conference papers) from 2017–2019 in all journals of the world-average baseline, including non-core journals, counted by each paper’s own subfield. They are not the papers of the ranked journals alone.
| Measure | Year series | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ranked journals | 62 | 63 | 67 | 72 | 71 | 71 | 70 | 76 | 78 | 79 | 84 | 90 | 93 | 94 | 101 | 103 | 103 | 107 | 110 | 113 | 112 | 113 | 112 | 115 | 118 | 118 | |
| Window papers (baseline) | 21,393 | 22,605 | 23,564 | 25,198 | 26,730 | 28,679 | 30,899 | 33,180 | 35,970 | 38,557 | 40,422 | 41,616 | 43,188 | 44,707 | 46,025 | 46,217 | 45,838 | 45,081 | 44,376 | 45,117 | 46,476 | 49,420 | 52,123 | 54,243 | 54,878 | 56,668 | |
| Median OJR | 0.80 | 0.92 | 0.82 | 0.97 | 0.997 | 1.005 | 1.09 | 1.14 | 1.076 | 1.075 | 0.999 | 0.94 | 0.905 | 0.897 | 0.75 | 0.74 | 0.70 | 0.55 | 0.57 | 0.49 | 0.43 | 0.40 | 0.36 | 0.33 | 0.35 | 0.31 |
How to read these rankings
- OJR, the OpenJournalRank Indicator
- A field-normalized 3-year citation impact, computed from OpenAlex with the NCI3 method. It divides the citations a journal’s papers received by the world average for papers of the same subfield, year and type, so 1.00 is the world average and 2.00 means twice as many citations as expected. Because it is normalized, it can be compared across fields. Read the methodology
- Quartiles
- Q1 to Q4 split the ranked journals of the list you are viewing into four equal groups by OJR. A journal’s quartile depends on the list: the same journal can be Q1 in its subfield and Q2 among all journals.
- Impact factor (2-year)
- Citations per paper over a two-year window, counted from OpenAlex. It is easy to compare with familiar impact factors but is not field-normalized, so compare it only within a field. It is not Clarivate’s Journal Impact Factor. Why it differs from the Journal Impact Factor
- Rank ranges
- Each rank in the latest year carries a likely range from 1,000 resamples of the journal’s papers. Where two journals’ ranges overlap, the data cannot tell them apart, so treat neighbouring ranks as ties.