Journal profile · Computer Science, Artificial Intelligence
International Journal of Uncertainty Fuzziness and Knowledge-Based Systems
ISSN 0218-4885 · eISSN 1793-6411 · World Scientific Publishing Co. Pte Ltd · SINGAPORE · Bimonthly
International Journal of Uncertainty Fuzziness and Knowledge-Based Systems: CAS Zone 4 · Computer Science (2025 upgraded edition); impact factor 1.02; subscription journal; review about 12 months (community reports); community-reported acceptance: easy; 65 articles in 2025; indexed in SCIE and Scopus.
Scope
Aims, scope and focus
International Journal of Uncertainty Fuzziness and Knowledge-Based Systems is published by World Scientific Publishing Co. Pte Ltd and is in Zone 4 of Computer Science in the CAS Journal Ranking (2025 upgraded edition). By OpenAlex counts of its recent articles, its largest topics are Multi-Criteria Decision Making, Fuzzy Logic and Control Systems and Fuzzy Systems and Optimization, together about 44.9% of its articles. Its main subfields are Artificial Intelligence. (generated from OpenAlex topic counts and CAS ranking data)
The International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems is a forum for research on various methodologies for the management of imprecise, vague, uncertain or incomplete information. The aim of the journal is to promote theoretical or methodological works dealing with all kinds of methods to represent and manipulate imperfectly described pieces of knowledge, excluding results on pure mathematics or simple applications of existing theoretical results. It is published bimonthly, with worldwide distribution to researchers, engineers, decision-makers, and educators.
Source: LetPub
Research area (LetPub): Computer Science, Artificial Intelligence
Main research topics OpenAlex counts of recent articles; shares are approximate
- Multi-Criteria Decision MakingDecision Sciences23.3%
- Fuzzy Logic and Control SystemsComputer Science11.1%
- Fuzzy Systems and OptimizationMathematics10.5%
- Rough Sets and Fuzzy LogicComputer Science9.5%
- Neural Networks and ApplicationsComputer Science7.1%
- Advanced Algebra and LogicComputer Science4.8%
- Optimization and Mathematical ProgrammingEngineering4.4%
- Bayesian Modeling and Causal InferenceComputer Science4.3%
Rankings & indexing
CAS ranking and database indexing
CAS Journal Ranking
CAS Journal Ranking, upgraded edition (March 2025)Computer Science Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Computer Science | Zone 4 |
| Minor | Computer Science, Artificial Intelligence | Zone 4 |
Top journal: noReview journal: no
CAS Xinrui Journal Ranking (March 2026)Computer Science Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Computer Science | Zone 4 |
| Minor | Computer Science, Artificial Intelligence | Zone 4 |
Top journal: noReview journal: not marked
CAS Journal Ranking, previous upgraded edition (December 2023)Computer Science Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Computer Science | Zone 4 |
| Minor | Computer Science, Artificial Intelligence | Zone 4 |
Top journal: noReview journal: no
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.
Metrics
Impact metrics and publication volume
Impact
- Impact factor
- 1.02LetPub ·
- CiteScore 2026-06
- 2.5LetPub ·
- SJR 2026-06
- 0.31LetPub ·
- SNIP 2026-06
- 0.47LetPub ·
- h-index
- 53LetPub ·
- h-index
- 72OpenAlex ·
- i10-index
- 712OpenAlex ·
- 2-year mean citedness
- 1.12OpenAlex ·
- Self-citation rate
- 10%LetPub ·
- Share of gold OA articles
- 1.91%LetPub ·
Volume
- Articles per year
- 45LetPub ·
Articles by year OpenAlex count · 2,146 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 45 | 2 | 5 |
| 2025 | 65 | 0 | 77 |
| 2024 | 58 | 3 | 106 |
| 2023 | 73 | 1 | 259 |
| 2022 | 70 | 3 | 414 |
| 2021 | 73 | 3 | 546 |
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.
Review & acceptance
Review time and acceptance
- Average review time (community reports)
- about 12 monthsLetPub ·
- Average acceptance (community reports)
- EasyLetPub ·
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.
Fees & open access
APC and open-access policy
Subscription journalLetPub
A subscription journal: articles are read by subscription or purchase, and authors usually pay no publication charge.
No source has fee information yet; check the journal's website.
The journal's website is authoritative for fees; sources were observed at different times and each keeps its own value, without averaging.
Profile
Publication details and official links
- Publisher
- World Scientific Publishing Co. Pte Ltd
- Country or region
- SINGAPORE
- Language
- English
- Frequency
- Bimonthly
- ISSN
- 0218-4885
- Electronic ISSN
- 1793-6411
- Official links
- Journal homepage ↗OpenAlex
- Submission system ↗LetPub
FAQ
Frequently asked questions about International Journal of Uncertainty Fuzziness and Knowledge-Based Systems
What CAS zone is International Journal of Uncertainty Fuzziness and Knowledge-Based Systems in?
In the 2025 upgraded edition of the CAS Journal Ranking, International Journal of Uncertainty Fuzziness and Knowledge-Based Systems is in Zone 4 of Computer Science, and in Zone 4 of the minor category Computer Science, Artificial Intelligence. In the 2026 Xinrui edition it is in Zone 4 of Computer Science. Zones from different editions, and from major and minor categories, are not interchangeable.
What is the impact factor of International Journal of Uncertainty Fuzziness and Knowledge-Based Systems?
The latest impact factor listed by LetPub is 1.02; CiteScore 2.5, h-index 72.
How long does peer review take at International Journal of Uncertainty Fuzziness and Knowledge-Based Systems?
Authors report an average review time of about 12 months; the community-reported acceptance is “Easy”. Article statistics cover accepted papers only, publisher figures follow the journal's own definitions, and community reports come from authors' own submissions; none is a promise from the journal.
Which databases index International Journal of Uncertainty Fuzziness and Knowledge-Based Systems?
According to LetPub and DOAJ records, International Journal of Uncertainty Fuzziness and Knowledge-Based Systems is indexed in SCIE and Scopus.
Is International Journal of Uncertainty Fuzziness and Knowledge-Based Systems open access, and what is the APC?
International Journal of Uncertainty Fuzziness and Knowledge-Based Systems is a subscription journal. Fee information is not available yet; check the journal's website.
Sources and updates
The facts on this page come from LetPub, OpenAlex; every figure is tagged with its source and the date it was observed, and conflicting values are kept per source. LetPub source page: view ↗ (archived 2026-08-25). Last updated: .