[DL] RCRA workshop at FLOC 2026 - call for paper

[Luciano Serafini]

The RCRA group (Knowledge Representation & Automated Reasoning)
of the AI*IA (Italian Association for Artificial Intelligence)

organizes the

33rd International Workshop on Experimental Evaluation of Algorithms for Solving
Problems with Combinatorial Explosion (RCRA 2026)

co-located with FLoC 2026 (Federated Logic Conference 2026)
https://www.floc26.org/ July 2026, Lisbon, Portugal.

Workshop web site: https://rcra2026.github.io/
______________________________________________________________________ *

This event follows the series of the RCRA (Knowledge Representation and Automated Reasoning) annual meetings, held
since 1994. The success of the previous events shows that RCRA is becoming a major forum for exchanging ideas and
proposing experimentation methodologies for algorithms in Artificial Intelligence.
______________________________________________________________________ *

**IMPORTANT DATES

Paper submission deadline: April 24th, 2026
Notification of acceptance: May 20th, 2026
Final version of accepted original papers: July 1st, 2026
RCRA workshop: July 18th, 2026

**AIMS AND SCOPE

Many problems in Artificial Intelligence show an exponential explosion of the search space. Although stemming from
different research areas in AI, such problems are often addressed with algorithms that have a common goal: the
effective exploration of huge state spaces. Many algorithms developed in one research area are applicable to other
problems, or can be hybridized with techniques in other areas. Artificial Intelligence tools often exploit or
hybridize techniques developed by other research communities, such as Operations Research. In recent years,
research in Artificial Intelligence has more and more focused on experimental evaluation of algorithms, the
development of suitable methodologies for experimentation and analysis, the study of languages and the
implementation of systems for the definition and solution of problems.

Scope of the workshop is fostering the cross-fertilization of ideas stemming from different areas, proposing
benchmarks for new challenging problems, comparing models and algorithms from an experimental viewpoint, and, in
general, comparing different approaches with respect to efficiency, problem modelling, and ease of development.

Topics of interest include, but are not limited to:
* Experimental evaluation of algorithms for
   o knowledge representation
   o automated reasoning
   o planning
   o scheduling
   o machine learning
   o model checking
   o boolean satisfiability (SAT)
   o constraint programming
   o argumentation
   o temporal reasoning
   o combinatorial optimization
   o quantified boolean formulae and quantified constraints
   o modal logics
   o logic programming
   o answer set programming
   o ontological reasoning
* Definition and construction of benchmarks
* Experimentation methodologies
* Metaheuristics
* Algorithm hybridization
* Static analysis of combinatorial problems
* Languages and systems for definition and solution of problems
* Comparisons between systems and algorithms
* Application experiences (visualization, graphics, security, transports,...)

**WORKSHOP CHAIRS

Alessandro Bertagnon, University of Ferrara, Italy
Marco Maratea, University of Calabria, Italy
Enrico Scala, University of Brescia, Italy
Luciano Serafini, FBK, Italy
Mauro Vallati, University of Huddersfield, UK

**SUBMISSIONS

Authors are invited to submit either original and non-original papers.

Publications showing negative results are welcome, provided that the approach was original and very promising in
principle, the experimentation was well-conducted, the results obtained were unforeseeable and gave important hints
in the comprehension of the target problem, helping other researchers to avoid unsuccessful paths.

Workshop submissions must be in PDF format, do not exceed 15 (for full papers) or 8 (for short papers) pages.
Papers should be formatted according to the CEUR-WS’s single-column style (http://ceur-ws.org/HOWTOSUBMIT.html).

RCRA 2026 uses HotCrp for the submission of contributions.
Contributions must be submitted through this page: https://submissions.floc26.org/rcra.

**PROCEEDINGS

CEUR-WS Proceedings:
Accepted original papers will be published in the CEUR Workshop Proceedings (http://ceur-ws.org/)
(upon authors confirmation), possibly in conjunction with other workshops.

Moreover, as in some previous editions, we are considering the possibility of having a special issue of an international journal,
provided that a sufficient amount of high quality papers is collected. All technical papers, original and non-original, will be eligible.

Best regards,

Alessandro Bertagnon, University of Ferrara, Italy
Marco Maratea, University of Calabria, Italy
Enrico Scala, University of Brescia, Italy
Luciano Serafini, FBK, Italy
Mauro Vallati, University of Huddersfield, UK
RCRA 2026 chairs


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