Evidence-Driven Reasoning for Industrial Maintenance Using Heterogeneous Data
Fearghal O’Donncha, Nianjun Zhou, Natalia Martinez, James T Rayfield, Fenno F. Heath III, Abigail Langbridge, Roman Vaculin
Abstract
Industrial maintenance platforms contain rich but fragmented evidence, including free-text work orders, heterogeneous operational sensors or indicators, and structured failure knowledge. These sources are often analyzed in isolation, producing alerts or forecasts that do not support conditional decision-making: given this asset history and behavior, what is happening and what action is warranted?We present Condition Insight Agent, a deployed decision-support framework that integrates maintenance language, behavioral abstractions of operational data, and engineering failure semantics to produce evidence-grounded explanations and advisory actions. The system constrains reasoning through deterministic evidence construction and structured failure knowledge, and applies a rule-based verification loop to suppress unsupported conclusions.Case studies from production CMMS deployments show that this verification-first design operates reliably under heterogeneous and incomplete data while preserving human oversight. Our results demonstrate how constrained LLM-based reasoning can function as a governed decision-support layer for industrial maintenance.- Anthology ID:
- 2026.acl-industry.50
- Volume:
- Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 6: Industry Track)
- Month:
- July
- Year:
- 2026
- Address:
- San Diego, California, USA
- Editors:
- Yunyao Li, Georg Rehm, Mei Tu
- Venue:
- ACL
- SIG:
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 736–748
- Language:
- URL:
- https://preview.aclanthology.org/ingestion-form-platform/2026.acl-industry.50/
- DOI:
- Cite (ACL):
- Fearghal O’Donncha, Nianjun Zhou, Natalia Martinez, James T Rayfield, Fenno F. Heath III, Abigail Langbridge, and Roman Vaculin. 2026. Evidence-Driven Reasoning for Industrial Maintenance Using Heterogeneous Data. In Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 6: Industry Track), pages 736–748, San Diego, California, USA. Association for Computational Linguistics.
- Cite (Informal):
- Evidence-Driven Reasoning for Industrial Maintenance Using Heterogeneous Data (O’Donncha et al., ACL 2026)
- PDF:
- https://preview.aclanthology.org/ingestion-form-platform/2026.acl-industry.50.pdf