Deadline Extended : CHOMPS – Confabulation, Hallucinations, & Overgeneration in Multilingual & Precision-critical Settings (with our apologies for cross-posting)
* New Deadline * 03 October, 2025 (AoE) . Submit via our [ https://openreview.net/group?id=aclweb.org/AACL-IJCNLP/2025/Workshop/CHOMPS | OpenReview submission page ] . Note : Paper submissions must use the official ACL style templates and ARR anonymity policy to avoid desk rejects. More Details here: [ https://www.aclweb.org/adminwiki/index.php?title=ACL_Author_Guidelines | https://www.aclweb.org/adminwiki/index.php?title=ACL_Author_Guidelines ]
Venue: IJCNLP-AACL 2025 ( [ https://2025.aaclnet.org/ | https://2025.aaclnet.org/ ] ), IIT Bombay, Mumbai, India Date: 23/24th December 2025 (TBC) Workshop website: [ https://chomps2025.github.io/ | https://chomps2025.github.io/ ]
* Description * Despite rapid advances, LLMs continue to "make things up": a phenomenon that manifests as hallucination, confabulation, and overgeneration. That is, produce unsupported and unverifiable text that sounds deceptively plausible. These outputs pose real risks in settings where accuracy and accountability are non-negotiable, including healthcare, legal systems, and education. The aim of the CHOMPS workshop is to find ways to mitigate one of major the hurdles that currently prevent the adoption of Large Language Models in real-world scenarios: namely, their tendency to hallucinate, i.e., produce unsupported and unverifiable text that sounds deceptively plausible.
The workshop will explore hallucination mitigation in practical situations, where this mitigation is crucial: in particular, precision-critical applications (such as those in the medical, legal and biotech domains), as well as multilingual settings (given the lack of resources available to reproduce what can be done for English in other linguistic contexts). In practice, we intend to invite works of the following (not exclusive) list of topics:
* Workshop topics * - Metrics, benchmarks and tools for hallucination detection - Factuality challenges in mission critical & domain-specific (e.g., medical, legal, biotech) and their consequences - Mitigation strategies during inference or model training - Studies of hallucinatory and confabulatory behaviors of LLMS in cross-lingual and multilingual scenarios - Confabulations in language & multimodal (vision, text, speech) models - Perspectives and case studies from other disciplines - …
* Invited speakers * - Anna ROGERS, IT University of Copenhagen - Danish PRUTHI, IISc Bangalore - Abhilasha RAVICHANDER, University of Washington - Dr. Khyathi Raghavi Chandu, Mistral AI
* Panel Discussion * - Preslav Nakov, MBZUAI - Sunayana Sitaram, Microsoft Research - Chung-Chi Chen, AIST, Japan
* Shared Task * SHROOM-CAP - A Cross-lingual Scientific Hallucination Detection shared task. More info : [ https://helsinki-nlp.github.io/shroom/2025a | https://helsinki-nlp.github.io/shroom/2025a ]
* Submission details * The workshop is designed with a widely inclusive submission policy so as to foster as vibrant a discussion as possible. Archival or non-archival submissions may consist of up to 8 pages (long) or 4 pages (short) of content. Dissemination submissions may consist of up to 1 page of content. On acceptance, authors may add one additional page to accommodate changes suggested by the reviewers.
Please use the ACL style templates available here: [ https://github.com/acl-org/acl-style-files | https://github.com/acl-org/acl-style-files ] The submissions need to be done in PDF format via: (a) via Direct submission ( [ https://openreview.net/group?id=aclweb.org/AACL-IJCNLP/2025/Workshop/CHOMPS | https://openreview.net/group?id=aclweb.org/AACL-IJCNLP/2025/Workshop/CHOMPS ] ) (b) via ARR commitment ( [ https://openreview.net/group?id=aclweb.org/AACL-IJCNLP/2025/Workshop/CHOMPS_... | https://openreview.net/group?id=aclweb.org/AACL-IJCNLP/2025/Workshop/CHOMPS_... ] )
* Important dates * Paper submission deadline: September 29 , 2025 Direct ARR commitment: October 27 , 2025 Author notification: November 3 , 2025 Camera-Ready due: November 11 , 2025 Workshop date: December 23/ 24, 2025 (TBC)
* Contact * For questions, please send an email to chomps-aacl2025@googlegroups.com or contact one of the workshop chairs: - Aman Sinha, Université de Lorraine, aman.sinha@univ-lorraine.fr - Raúl Vázquez, University of Helsinki, raul.vazquez@helsinki.fi - Timothee Mickus, University of Helsinki, timothee.mickus@helsinki.fi