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LPNMR 2026 - Preliminary Call for Papers

18th International Conference on Logic Programming and Non-monotonic Reasoning (LPNMR 2026)
Klagenfurt, Austria | September 7-11, 2026
Website: https://lpnmr2026.aics.aau.at
Contact us: lpnmr2026@easychair.org
Submission: https://easychair.org/conferences/?conf=lpnmr2026
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IMPORTANT DATES
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- Paper registration: April 30, 2026
- Submission deadline: May 7, 2026
- Final notification: June 11, 2026
- Final versions due: July 2, 2026
- Conference: September 7-11, 2026

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AIMS AND SCOPE
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LPNMR 2026 is the eighteenth in the series of international conferences on logic programming and non-monotonic reasoning. LPNMR is a forum for exchanging ideas on declarative logic programming, non-monotonic reasoning, and knowledge representation. The aim of the conference is to facilitate interactions between researchers and practitioners interested in the design and implementation of logic-based programming languages and database systems, and those working in knowledge representation and non-monotonic reasoning. LPNMR strives to encompass theoretical and experimental studies that have led or will lead to advances in declarative programming and knowledge representation, as well as their use in practical applications.
LPNMR 2026 aims to bring together researchers from LPNMR and neighboring areas in order to share research experiences, promote collaboration and identify directions for joint future research.

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TOPICS
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Authors are invited to submit papers presenting original and unpublished research on all aspects of non-monotonic approaches in logic programming and knowledge representation. Conference topics include, but are not limited to:

- Foundations of LPNMR: Semantics of new and existing languages; Action languages; Causality; Formalization of Commonsense Reasoning and understanding its laws and nature; Relationships among formalisms; Complexity and expressive power; Inference algorithms and heuristics for LPNMR systems; Extensions of traditional LPNMR languages such as new logical connectives or new inference capabilities; Updates, revision, and other operations on LPNMR systems; Uncertainty in LPNMR systems

- Implementation of LPNMR systems: System descriptions, comparisons, and evaluations; Algorithms and novel techniques for efficient evaluation; LPNMR benchmarks; Systems using LPNMR subsystems

- Applications of LPNMR: Use of LPNMR in Commonsense Reasoning and other areas of knowledge representation; LPNMR languages and algorithms in planning, diagnosis, and argumentation; Reasoning with preferences, decision making, and policies; Applications of LPNMR languages in data integration and exchange systems; Software engineering and model checking; Applications of LPNMR to bioinformatics, linguistics, psychology, and other sciences; Integration of LPNMR systems with other computational paradigms

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SUBMISSION AND PUBLICATION
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LPNMR 2026 welcomes submissions of long papers (up to 15 pages) or short papers (up to 8 pages) in the following categories:

- Technical papers
- System papers
- Application papers

The indicated number of pages includes the title page, figures, tables, references, and appendix. All submissions will be peer-reviewed and accepted papers will appear in the conference proceedings published in the Springer's Lecture Notes in Artificial Intelligence (LNAI) series. Submissions must be written in English, present original research, and be formatted according to Springer's guidelines and technical instructions available at:

https://www.springer.com/gp/computer-science/lncs/conference-proceedings-guidelines

LPNMR 2026 will not accept any paper which, at the time of submission, is under review or has already been published or accepted for publication in a journal or another conference. Authors are also required not to submit their papers elsewhere during LPNMR's review period. However, these restrictions do not apply to workshops (e.g., ASPOCP 2026) with a limited audience and without archival proceedings.

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FAST JOURNAL TRACK FOR BEST PAPERS
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Two award-winning papers (Best Paper Award and Best Student Paper Award of LPNMR 2026) will be invited for publication in either the Artificial Intelligence Journal or the Journal of Artificial Intelligence Research, based on the preference of the authors.
Additionally, about 5-7 high-quality papers with a logic programming focus will be invited for publication in the journal of Theory and Practice of Logic Programming.

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VENUE
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LPNMR 2026 will be held on the campus of the University of Klagenfurt in September 2026. Klagenfurt is the capital of the state Carinthia in the south of Austria. The name Klagenfurt was first mentioned in the late 12th century and legend has it that Klagenfurt was founded after a couple of brave men had slain the abominable Lindwurm, a winged dragon. The city is located next to the lake Woerthersee, one of the most beautiful lakes in Austria, surrounded by several forest-covered hills and mountains. Being a small city, with a Renaissance-style city center reflecting 800 years of history and with an Italian influence, Klagenfurt is a pleasant place to live and work.

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ORGANISING COMMITTEE
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General Chair:
Wolfgang Faber, University of Klagenfurt, Austria

Program Co-chairs:
Martin Gebser, University of Klagenfurt, Austria
Yanhong Annie Liu, Stony Brook University, USA