| Vol-4166 urn:nbn:de:0074-4166-x Copyright © 2026 for the individual papers by the papers' authors. Copyright © 2026 for the volume as a collection by its editors. This volume and its papers are published under the Creative Commons License Attribution 4.0 International (CC BY 4.0).

# CMNA 2025
Computational Models of Natural Argument 2025

## Proceedings of the 25th Workshop on Computational Models of Natural Argument
Virtual Event, UK, December 12th, 2025.

Edited by

### Giulia D'Agostino(1)
Floriana Grasso(2)
Nancy L. Green(3)
Roos J Scheffers(4)
Jodi Schneider(5)
Simon Wells(6)

(1) Institute of Argumentation, Linguistics and Semiotics (IALS), Università della Svizzera italiana, Switzerland
(2) School of Computer Science and Informatics, University of Liverpool, UK
(3) Department of Computer Science, University of North Carolina at Greensboro, US
(4) Department of Information and Computing Sciences, Utrecht University, The Netherlands
(5) The Information School, University of Wisconsin–Madison, US
(6) School of Computing, Edinburgh Napier University, UK

## Table of Contents

There were 12 papers submitted for peer-review to this workshop. Out of these, 9 papers were accepted for this volume, 5 as regular papers and 4 as short papers.

### Programme Committee

Andrea Pazienza, A3K Srl, Italy
Antonio Rago, Imperial College London, UK
Antonis Kakas, University of Cyprus
Boris Galitsky, Knowledge Trail Inc, USA
Elena Musi, University of Liverpool, UK
Guillermo Simari, Universidad Nacional del Sur in Bahia Blanca, Argentina
Helmut Horacek, German Research Center for AI
Heng Zheng, University of Kentucky, USA
Loris Isabettini, University of Windsor, Canada
Mare Koit, University of Tartu, Estonia
Mark Snaith, Robert Gordon University Aberdeen, UK
Oana Cocarascu, King's College London, UK
Patrick Saint-Dizier, CNRS, France
Paul Piwek, The Open University, UK
Ramon Ruiz-Dolz, University of Dundee, UK
Randy Harris, University of Waterloo, Canada
Rudi Palmieri, University of Liverpool, UK
Stella Heras, Universitat Politècnica de València, Spain
Tommy Yuan, University of York, UK
Yuanxi Fu, School of Information Sciences, University of Illinois Urbana-Champaign, USA

### Accepted papers

- Towards Neurosymbolic Argumentative Agents 1-10
  Alison R. Panisson, Guilherme Trajano
- Leveraging Small LLMs for Argument Mining in Education: Argument Component Identification, Classification, and Assessment 11-30
  Lucile Favero, Juan Antonio Pérez-Ortiz, Tania Käser, Nuria Oliver
- Discourse based argumentation analysis for LLM verification 31-41
  Boris Galitsky
- End-to-End Argument Mining in Student Essays: A Comparison of Pipeline and Multi-Task Generative Models 42-56
  Fahad M. Alzaidee, Tommy Yuan, Peter Nightingale
- A Notation for Declaratively Describing Arguments 57-67
  Simon Wells, Mark Snaith
- The Rhetoricon Database: An overview and an appreciation 68-75
  Randy Allen Harris, Chrysanne Di Marco
- Virtue Ethics Arguments 76-80
  Nancy L. Green
- Epanalepsis in argumentation: Pseudo tautologies 81-92
  Randy Allen Harris, Zoya Randhawa
- Chain-of-Syllogisms: Unifying Analysis & Conclusions Boosts Argument Mining 93-96
  Luis Brena, William Jurayj, Gregory Deyesu, Zaid Al-Huneidi, Andrew Blair-Stanek, Benjamin Van Durme

2026-01-19: submitted by Floriana Grasso, metadata incl. bibliographic data published under Creative Commons CC0
2026-02-09: published on CEUR Workshop Proceedings (CEUR-WS.org, ISSN 1613-0073) |valid HTML5|