Fuzzy Sets and Systems

Fuzzy Sets and Systems is published by Elsevier and is in Zone 1 of Mathematics in the CAS Journal Ranking (2025 upgraded edition, Top journal). By OpenAlex counts of its recent articles, its largest topics are Multi-Criteria Decision Making, Fuzzy Logic and Control Systems and Advanced Algebra and Logic, together about 40.1% of its articles. (generated from OpenAlex topic counts and CAS ranking data)

An International Journal in Information Science and Engineering Official Publication of the International Fuzzy Systems Association (IFSA)Since its launching in 1978, the journal Fuzzy Sets and Systems has been devoted to the international advancement of the theory and application of fuzzy sets and systems. The theory of fuzzy sets now encompasses a well organized corpus of basic notions including (and not restricted to) aggregation operations, a generalized theory of relations, specific measures of information content, a calculus of fuzzy numbers. Fuzzy sets are also the cornerstone of a non-additive uncertainty theory, namely possibility theory, and of a versatile tool for both linguistic and numerical modeling: fuzzy rule-based systems. Numerous works now combine fuzzy concepts with other scientific disciplines as well as modern technologies.In mathematics fuzzy sets have triggered new research topics in connection with category theory, topology, algebra, analysis. Fuzzy sets are also part of a recent trend in the study of generalized measures and integrals, and are combined with statistical methods. Furthermore, fuzzy sets have strong logical underpinnings in the tradition of many-valued logics.Fuzzy set-based techniques are also an important ingredient in the development of information technologies. In the field of information processing fuzzy sets are important in clustering, data analysis and data fusion, pattern recognition and computer vision. Fuzzy rule-based modeling has been combined with other techniques such as neural nets and evolutionary computing and applied to systems and control engineering, with applications to robotics, complex process control and supervision. In thefield of information systems, fuzzy sets play a role in the development of intelligent and flexible manBmachine interfaces and the storage of imprecise linguistic information. In Artificial Intelligence various forms of knowledge representation and automated reasoning frameworks benefit from fuzzy set-based techniques, for instance in interpolative reasoning, non-monotonic reasoning, diagnosis, logic programming, constraint-directed reasoning, etc. Fuzzy expert systems have been devised for fault diagnosis,and also in medical science. In decision and organization sciences, fuzzy sets has had a great impact in preference modeling and multicriteria evaluation, and has helped bringing optimization techniques closer to the users needs. Applications can be found in many areas such as management, production research, and finance. Moreover concepts and methods of fuzzy set theory have attracted scientists in many other disciplines pertaining to human-oriented studies such as cognitive psychology and some aspects of social sciences.The scope of the journal Fuzzy Sets and Systems has expanded so as to account for all facets of the field while emphasizing its specificity as bridging the gap between the flexibility of human representations and the precision and clarity of mathematical or computerized representations, be they numerical or symbolic.The journal welcomes original and significant contributions in the area of Fuzzy Sets whether on empirical or mathematical foundations, or their applications to any domain of information technology, and more generally to any field of investigation where fuzzy sets are relevant. Applied papers demonstrating the usefulness of fuzzy methodology in practical problems are particularly welcome. Fuzzy Sets and Systems publishes high-quality research articles, surveys as well as case studies. Separate sections are Recent Literature, and the Bulletin, which offers research reports, book reviews and conference announcements and various news items. Invited review articles on topics of general interest are included and special issues are published regularly.

From the journal's Aims & Scope

Research area (LetPub): Computer Science, Theory & Methods

Editor-in-chief I. CousoPublisher website

Editorial board by country: 8 in mainland China (about 5%); most named Spain 25, Italy 18, France 17, United States 10, Czechia 9 (157 members with a country) Editorial board ↗Publisher website · 2026-10-01

CAS Journal Ranking

Database indexing

SCIEScopusLetPub

International journal early-warning lists: not listed in any editionLetPub

Editions, and major and minor categories, are shown separately and never merged into one zone; check which edition your institution uses before you submit or report.

Impact

Impact factor

3LetPub · 2026-09-13

Impact factor (publisher)

3.1Publisher website · 2026-10-01

CiteScore 2026-06

5.8LetPub · 2026-09-13

CiteScore (publisher)

5.8Publisher website · 2026-10-01

SJR 2026-06

0.72LetPub · 2026-09-13

SNIP 2026-06

1.43LetPub · 2026-09-13

h-index

150LetPub · 2026-09-13

h-index

265OpenAlex · 2026-10-01

i10-index

6,367OpenAlex · 2026-10-01

2-year mean citedness

2.73OpenAlex · 2026-10-01

Self-citation rate

22.6%LetPub · 2026-09-13

Share of gold OA articles

14.97%LetPub · 2026-09-13

Volume

Articles per year

294LetPub · 2026-09-13

Sources count differently and were observed at different times, so each source's own value is kept; "publisher" marks figures from the journal's website.

Figures by source

Average review time (community reports)

about 5.3 monthsLetPub · 2026-09-13

Average acceptance (community reports)

Fairly easyLetPub · 2026-09-13

Submission to first decision

10 daysPublisher website · 2026-10-01

First decision after review

97 daysPublisher website · 2026-10-01

Submission to acceptance

203 daysPublisher website · 2026-10-01

Acceptance to publication

6 daysPublisher website · 2026-10-01

Peer review

Single anonymous peer reviewPublisher website

Community reports come from authors' own submissions (confidence 0.5) and are not a promise from the journal; for publisher figures, the journal's own definitions apply.

A hybrid journal charges the APC only when the author chooses open access; publishing under the subscription model is usually free.

The journal's website is authoritative for fees; sources were observed at different times and each keeps its own value, without averaging.

Excerpts are quoted from the journal's website; "model summary" lines are written by Workers AI and checked against the text. The journal's website is authoritative.

Publisher

Elsevier

Country or region

NETHERLANDS

Language

English

Frequency

Semimonthly

ISSN

0165-0114

Electronic ISSN

1872-6801

Society / sponsor

International Fuzzy Systems Association

Official links

• Journal homepage ↗LetPub
• Submission system ↗Publisher website
• Special issues ↗Publisher website