@inproceedings{kim-etal-2025-heisir, title = "{HEISIR}: Hierarchical Expansion of Inverted Semantic Indexing for Training-free Retrieval of Conversational Data using {LLM}s", author = "Kim, Sangyeop and Lee, Hangyeul and Lee, Yohan", editor = "Chiruzzo, Luis and Ritter, Alan and Wang, Lu", booktitle = "Findings of the Association for Computational Linguistics: NAACL 2025", month = apr, year = "2025", address = "Albuquerque, New Mexico", publisher = "Association for Computational Linguistics", url = "https://preview.aclanthology.org/Ingest-2025-COMPUTEL/2025.findings-naacl.397/", pages = "7128--7144", ISBN = "979-8-89176-195-7" }