Uncertainty in Intelligent Systems

The International Journal of Approximate Reasoning is intended to serve as a forum for the treatment of imprecision and uncertainty in Artificial and Computational Intelligence, covering both the foundations of uncertainty theories, and the design of intelligent systems for scientific and engineering applications. It publishes high-quality research papers describing theoretical developments or innovative applications, as well as review articles on topics of general interest.

Relevant topics include, but are not limited to, probabilistic reasoning and Bayesian networks, imprecise probabilities, random sets, belief functions (Dempster-Shafer theory), possibility theory, fuzzy sets, rough sets, decision theory, non-additive measures and integrals, qualitative reasoning about uncertainty, comparative probability orderings, game-theoretic probability, default reasoning, nonstandard logics, argumentation systems, inconsistency tolerant reasoning, elicitation techniques, philosophical foundations and psychological models of uncertain reasoning.

Domains of application for uncertain reasoning systems include risk analysis and assessment, information retrieval and database design, information fusion, machine learning, data and web mining, computer vision, image and signal processing, intelligent data analysis, statistics, multi-agent systems, etc.

The journal is affiliated with the Society for Imprecise Probability: Theories and Applications (SIPTA), and Beliefs functions and Applications Society (BFAS).

Special Issue on Advances in Computational Intelligence and Mathematics – Selected Papers from ESCIM 2025
提出日: 2026-01-09

This special issue aims to gather high-quality, peer-reviewed contributions presented at ESCIM 2025. Website: https://escim2025.uca.es/

The 16th European Symposium on Computational Intelligence and Mathematics focused on a broad spectrum of topics in computational intelligence, including soft computing, fuzzy systems, knowledge representation, and artificial intelligence applications. A significant number of contributions explored theoretical and applied aspects of fuzzy logic, fuzzy decision-making, and fuzzy information processing, which remain central themes of the conference. Additionally, the event featured a dedicated workshop (DigForASP) addressing the intersection of AI and digital forensics, further enriching the scope of the special issue.

Guest editors:

Prof. Jesús Medina (Executive Guest Editor), University of Cádiz, Cadiz, Spain.
Email: jesus.medina@uca.es 

Prof. Juan Moreno-García, Universidad de Castilla-La Mancha, Ciudad Real, Spain.
Email: Juan.Moreno@uclm.es 

Dr. Boldizsár Tüű Szabó, Széchenyi István University, Győr, Hungary.
Email: tuu.szabo.boldizsar@ga.sze.hu 

Special issue information:

Topics of interest include, but are not limited to:

    Aggregation functions
    Applications of Computational Intelligent Systems, including medical informatics, renewable energy, digital forensics, etc.
    Data mining and knowledge discovery
    Formal concept analysis
    Fuzzy control
    Fuzzy decision analysis, decision making, optimization and design
    Fuzzy databases and information retrieval
    Fuzzy measures and integrals
    Fuzzy relation equations
    Fuzzy sets and fuzzy logic
    General operators in Computer Science
    Interval-valued fuzzy sets
    Knowledge extraction, representation, and modeling
    Learning, adaptive, and evolvable fuzzy systems
    Logic programming
    Mathematical foundations of fuzzy sets and fuzzy systems
    Mathematical morphology
    Non-classical logics (many valued, paraconsistent, epistemic, etc.)
    Rough set theory
    Similarity-based reasoning

Manuscript submission information:

Important Dates:

    Submission Open Date: November 7, 2025
    Submission Deadline: January 9, 2026
    Notification of Acceptance: April 30, 2026

Manuscripts must be submitted via the International Journal of Approximate Reasoning online submission system (Editorial Manager®). Please select the article type “VSI: ESCIM 2025” when submitting your manuscript online.

Please refer to the Guide for authors to prepare your manuscript.

All submitted papers under this call will undergo the standard review process of the journal.

For any further information, the authors may contact the Guest Editors.

Keywords:

Fuzzy sets; fuzzy logic; mathematics to computational intelligence

Special Issue on Set-Based Methods for Reliable Modeling, Identification, Decision Making, and Simulation
提出日: 2026-02-28

The special issue on “Set-Based Methods for Reliable Modeling, Identification, Decision Making, and Simulation” presents selected research papers that are based on presentations given during the International Symposium on Scientific Computing, Computer Arithmetic, and Verified Numerical Computations (SCAN). Its 20th edition will be held in Oldenburg, Germany, from the 22nd to 26th of September 2025.

Over the last decades, SCAN has become an important meeting place for researchers from the fields of reliable computing, software engineering, and uncertainty quantification and those from such wide and varied application areas as robotics, control, structural and civil engineering, and signal processing. The goal is, on the one hand, to put into practice modern findings in verified methods to assess the influence of uncertainty caused by modeling errors, model order reduction, or numerical methods in a rigorous manner. On the other hand, problems from practice give new impulse for theoretical developments in verification.

With this special issue, we intend to continue the tradition of publishing high-quality post-proceedings of the series of SCAN symposia on the basis of a thorough review of the latest, not yet published research results. The special issue will enhance the visibility of SCAN in the community of uncertainty modeling and quantification, both from theoretical and applied perspectives.

Guest editors:

Prof. Dr.-Ing. habil. Andreas Rauh
Department of Computing Science, Carl von Ossietzky Universität Oldenburg, Germany
Email: andreas.rauh@uni-oldenburg.de
Fields of interest: Uncertainty modeling, Optimal control, Robust control, State Estimation, Interval methods, Stochastic filtering

Prof. Dr. Ekaterina Auer
University of Applied Sciences Wismar, Germany
Email: ekaterina.auer@hs-wismar.de 

Fields of interest: Uncertainty modeling and quantification using verified, stochastic, or mixed approaches; algorithms with result verification and their application to engineering problems; verification and validation frameworks including uncertainty visualization; automated comparison and recommendation of verified software; algorithms using modern HPC (e.g., the GPU)

M.Sc. Marit Lahme
Department of Computing Science, Carl von Ossietzky Universität Oldenburg, Germany
Email: marit.lahme@uni-oldenburg.de
Fields of interest: Uncertainty modeling, Interval methods, Robust state and parameter estimation

Manuscript submission information:

Important Dates:

    Submission Open Date: September 28, 2025
    Submission Deadline: February 28, 2026
    Notification of Acceptance: July 31, 2026

Manuscripts must be submitted via the International Journal of Approximate Reasoning online submission system (Editorial Manager). Please select the article type “VSI: selected papers from SCAN” when submitting your manuscript online.

Please refer to the Guide for Authors to prepare your manuscript.

All submitted papers under this call will undergo the standard review process of the journal.

For any further information, the authors may contact the Guest Editors.

Keywords:

Set-based methods for uncertainty quantification and modeling; Estimation and decision making under uncertainty; Simulation and control of uncertain systems; Numerical methods with result verification

Special Issue on Extended papers from the 18th European Conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty (ECSQARU 2025)
提出日: 2026-04-30

The biennial ECSQARU conferences constitute a major forum for advances in the theory and practice of reasoning under uncertainty, with a focus on bringing symbolic and quantitative aspects together. Contributions come from researchers interested in advancing the scientific knowledge and from practitioners using uncertainty techniques in real-world applications. The scope of the ECSQARU conferences encompasses fundamental issues, representation, inference, learning, and decision making in qualitative and numeric uncertainty paradigms.

Previous ECSQARU events have been held in Arras (2023), Prague (2021), Belgrade (2019), Lugano (2017), Compiegne (2015), Utrecht (2013), Belfast (2011), Verona (2009), Hammamet (2007), Barcelona (2005), Aalborg (2003), Toulouse (2001), London (1999), Bonn (1997), Fribourg (1995), Granada (1993), and Marseille (1991).

This special issue calls for extended versions of paper published at the 18th edition of ECSQARU, which was held in September 2025 in Hagen, Germany.

Guest editors:

Prof. Matthias Thimm (Executive Guest Editor), FernUniversität in Hagen, Hagen, Germany; Email: matthias.thimm@fernuni-hagen.de
Dr. Kai Sauerwald, FernUniversität in Hagen, Hagen, Germany; Email: kai.sauerwald@fernuni-hagen.de

Special issue information:

This special issue is a follow-up to the 18th European Conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty (ECSQARU 2025) that took place on September 23-26, 2025, in Hagen, Germany. The special issue welcomes extended versions of works presented at ECSQARU 2025 and submissions must contain a significant addition (about 25%) compared to the conference version. In general, suitable topics include:

- Algorithms for uncertain inference
- Imprecise probabilities
- Applications of uncertain systems
- Inconsistency handling
- Argumentation
- Information fusion
- Acting under uncertainty
- Learning for uncertainty formalisms
- Belief functions
- Logics for reasoning under uncertainty
- Belief change and belief merging
- Markov decision processes
- Classification and clustering
- Planning under uncertainty
- Decision theory and decision graphs
- Possibility theory and possibilistic logic
- Default reasoning and non-monotonicity
- Preferences
- Description logics with uncertainty
- Probabilistic graphical models
- Foundations of reasoning under uncertainty
- Probabilistic logics
- Fuzzy sets and fuzzy logic
- Qualitative uncertainty models
- Game theory
- Rough sets
- Hybrid reasoning
- Uncertainty and data

Manuscript submission information:

Important Dates:

    Submission Open Date: January 1, 2026
    Submission Deadline: April 30, 2026
    Notification of Acceptance: April 30, 2027

Manuscripts must be invited by Guest Editors, and submitted via the International Journal of Approximate Reasoning online submission system (Editorial Manager®). Please select the article type “VSI: ECSQARU 2025” when submitting your manuscript online.

Please refer to the Guide for authors to prepare your manuscript.

All submitted papers under this call will undergo the standard review process of the journal.

For any further information, the authors may contact the Guest Editors.

Keywords:

knowledge representation; reasoning und uncertainty; Machine Learning

Special Issue on ISIPTA 2025
提出日: 2026-04-30

The 2025 edition of the biennial International Symposium on Imprecise Probabilities: Theories and Applications took place mid-July in Bielefeld, Germany. The event provided a platform to present and discuss recent developments in the field of imprecise probabilities.

The programme committee board invited the authors of selected contributions to extend their contribution. These were chosen from some of the best contributions to the conference to give a good representation of the latest interests and advances in the field of imprecise probabilities.

Guest editors:

Dr. Sébastien Destercke (Executive Guest Editor)
CNRS, Paris, France
Email: Sebastien.destercke@cnrs.fr
Areas of Expertise: Imprecise probability, uncertainty reasoning, machine learning, risk analysis

Dr. Alexander Erreygers
Foundations Lab for imprecise probabilities, Ghent University, Ghent, Belgium
Email: Alexander.Erreygers@UGent.be
Areas of Expertise: Imprecise probabilities, stochastic processes, quantum mechanics

Dr. Max Nendel
Department of Statistics and Actuarial Science, University of Waterloo, Waterloo, Canada
Email: mnendel@uwaterloo.ca
Areas of Expertise: Imprecise probabilities, stochastic process, finance, mathematics

Prof. Matthias Troffaes
Department of Mathematical Sciences, Durham University, Durham, UK
Email: matthias.troffaes@durham.ac.uk
Areas of Expertise: statistics, probability, uncertainty quantification, decision making

Manuscript submission information:

Important Dates:

    Submission Open Date: November 28, 2025
    Submission Deadline: April 30, 2026
    Notification of Acceptance: October 31, 2026

Manuscripts must be invited by Guest Editors, and submitted via the International Journal of Approximate Reasoning online submission system (Editorial Manager®). Please select the article type “VSI: ISIPTA 2025” when submitting your manuscript online.

Please refer to the Guide for authors to prepare your manuscript.

All submitted papers under this call will undergo the standard review process of the journal.

For any further information, the authors may contact the Guest Editors.

Keywords:

(imprecise probabilities) OR (approximate reasoning) OR (uncertainty reasoning)