CFP: 20th International Rule Challenge @ RuleML+RR 2026

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Linas Petkevičius

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1:23 PM (7 hours ago) 1:23 PM
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The 20th International Rule Challenge is the premier competitive forum of RuleML+RR 2026, dedicated to benchmarking, validating, and comparing innovative rule-oriented tools, systems, and applications. The challenge bridges theory and practice by fostering solutions relevant to research, industry, and government.

Participants are invited to present solutions to complex real-world problems or to propose new open challenges that can drive future research and evaluation in rule-based reasoning.

Submission categories:

  • Challenge Proposals: Definitions of rigorous benchmarks, industrial bottlenecks, or novel problems requiring rule-based reasoning. Submissions should include task descriptions, datasets, evaluation criteria, and success metrics.

  • Challenge Solutions: Empirical evaluations of systems (e.g., benchmarking or comparative analyses), rule-based ML evaluations, industrial case studies, or innovative rule- and model-driven applications.

Key themes include (non-exhaustive):

  • Rule-based and neuro-symbolic machine learning

  • Rules and Large Language Models (LLMs)

  • Explainable AI based on rules

  • Stream reasoning and Complex Event Processing

  • Business rules and rule standardization

  • Graph-relational data and knowledge systems

  • Rules with ontologies and OBDA

  • ASP, CLP, higher-order and modal rule systems

  • Distributed, multi-agent, and rule-based systems

  • Natural language interfaces for rules

  • Rules and model-driven engineering

Submission & publication:

  • Paper length: 8–15 pages

  • Format: CEUR-WS CEURART (1-column variant)

  • Proceedings: CEUR Workshop Proceedings

  • Submissions must be original and written in English

  • Each paper will be reviewed by at least three reviewers

Submissions should address (when applicable):

  • Clear problem definition, datasets, and evaluation criteria

  • Innovation and advancement beyond the state of the art

  • Concrete use cases and experimental results

  • Accessibility and user experience

  • Open science aspects (software, data, formats)

  • Links to demos, repositories, or project websites

Important dates (AoE):

  • Paper submission: June 5, 2026

  • Notification of acceptance: July 3, 2026

Submission site:
https://cmt3.research.microsoft.com/DAI2026/
(select the Rule Challenge track)

The Rule Challenge is part of RuleML+RR 2026, co-located with Declarative AI 2026 in Vilnius, Lithuania (Aug 24–26, 2026).
More info:
https://2026.declarativeai.net/events/ruleml-rr

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