NMR

NMR 2026

24th International Workshop on Nonmonotonic Reasoning

July 17–19, 2026, Lisbon, Portugal
Co-located with KR 2026 at FLoC 2026

NMR is the premier forum for results in the area of Nonmonotonic Reasoning. Its aim is to bring together active researchers in this broad field within knowledge representation and reasoning (KR), including belief revision, uncertain reasoning, reasoning about actions, planning, logic programming, preferences, argumentation, causality, and many other related topics including systems and applications. Visit also the general NMR webpage.

NMR has a long history - it started in 1984 and, up until 2020, was held every two years. Recent previous NMR workshops were held in Melbourne (2025), Vietnam (2024), Greece (2023), Haifa (2022), Hanoi (virtually) (2021), Rhodes (virtually) (2020), Tempe (2018), Cape Town (2016), Vienna (2014), Rome (2012), Toronto (2010), and Sydney (2008).

NMR 2026 is co-located with the 23rd International Conference on Principles of Knowledge Representation and Reasoning (KR 2026) at the Federated Logic Conference (FLoC 2026).

Aims and Scope

NMR 2026 aims to foster connections between the different subareas of nonmonotonic reasoning and provide a forum for emerging topics. We especially invite papers on systems and applications, as well as position papers addressing benchmark issues. The workshop will be structured by topical sessions fitting to the scopes of accepted papers. Workshop activities will include invited talks and presentations of technical papers.

Invited Speakers

Image of Leila Amgoud

Leila Amgoud

Title: TBA

Image of Matthias Knorr

Matthias Knorr

Title: TBA

Important Dates

Paper registrationApril 3, 2026
Paper submissionApril 10, 2026
NotificationMay 18, 2026
Camera-readyJune 17, 2026
WorkshopJuly 17–19, 2025

Submission Details

We invite two types of submissions:

All submissions should be formatted in CEUR style (1-column). Author kit: CEURART.zip. Papers must be submitted in PDF only.

Please submit your contribution through the NMR 2026 Submission Portal.

Organization

General Co-Chairs

Ana Ozaki University of Oslo and University of Bergen, Norway
Nico Potyka Cardiff University, UK

Programme Committee

Ofer ArieliThe Academic College of Tel-Aviv
Ringo BaumannLeipzig University
Lydia BlümelUniversität Leipzig
Alexander BochmanComputer Science Dept., Holon Institute of Technology
Richard BoothCardiff University
Giovanni BuraglioTU Wien
Giovanni CasiniISTI - CNR
Jens ClassenRoskilde University
Eduardo FerméUniversidade da Madeira, Portugal
Laura GiordanoDISIT, Università del Piemonte Orientale
Jonas Philipp HaldimannTU Wien
Andreas HerzigCNRS, IRIT, Univ. Toulouse
Haythem IsmailCairo University and German University in Cairo
Antonis KakasUniversity of Cyprus
Gabriele Kern-IsbernerTechnische Universität Dortmund
Sébastien KoniecznyCRIL - CNRS
Isabelle KuhlmannFernUniversität in Hagen
Tuomo LehtonenAalto University
Fenrong LiuTsinghua University
Thomas MeyerUniversity of Cape Town and CAIR
Xavier ParentTU Wien
Ramon Pino PerezUniversité d'Artois
Sylwia Polberg-RienerCardiff University
Antonio RagoImperial College London
Anna RapbergerImperial College London
Jandson RibeiroCardiff University
Sebastian RudolphTU Dresden
Zeynep G. SaribaturTU Wien
Ken SatohCenter for Juris-Informatics, ROIS, Japan
Kai SauerwaldUniversity of Hagen
Gerardo SimariUniversidad Nacional del Sur (UNS) and CONICET
Van-Giang TrinhInria Saclay
Anni Yasmin TurhanPaderborn University
Serena VillataCNRS - Laboratoire d'Informatique, Signaux et Systèmes de Sophia-Antipolis
Renata WassermannUniversity of Sao Paulo
Emil WeydertCSC, University of Luxembourg
Stefan WoltranTU Wien
Fan YangUtrecht University

Workshop Proceedings

The accepted papers will be made available electronically in the CEUR Workshop Proceedings series as informal proceedings (http://ceur-ws.org/). The copyright of papers remain with the authors. Full papers will be indexed by dblp.org; but extended abstracts published on CEUR proceedings will not be indexed by dblp.org anymore.

Sponsored by

TBA