@inproceedings{mantri-etal-2026-hierarchical, title = "Hierarchical Reason-of-Contact Detection in Retail Banking Customer Interactions via {LLM}-Driven Taxonomy Induction", author = "Mantri, Yoages Kumar and Sriraja, Yagneswaran and Hartley, John and Cowan, Greig A and Khraishi, Raad and Gupta, Abhinav", editor = "Li, Yunyao and Rehm, Georg and Tu, Mei", booktitle = "Proceedings of the 64th Annual Meeting of the {A}ssociation for {C}omputational {L}inguistics ({ACL} 2026)", month = jul, year = "2026", address = "San Diego, California, USA", publisher = "Association for Computational Linguistics", url = "https://preview.aclanthology.org/ingest-acl/2026.acl-industry.108/", pages = "1555--1566", ISBN = "979-8-89176-394-4" }