When in Doubt, Ask First: A Unified Retrieval Agent-Based System for Ambiguous and Unanswerable Question Answering

Long Nguyen, Quynh Vo, Hung Luu, Tho Quan. When in Doubt, Ask First: A Unified Retrieval Agent-Based System for Ambiguous and Unanswerable Question Answering. In Kentaro Inui, Sakriani Sakti, Haofen Wang, Derek F. Wong, Pushpak Bhattacharyya, Biplab Banerjee, Asif Ekbal, Tanmoy Chakraborty 0002, Dhirendra Pratap Singh, editors, Proceedings of the 14th International Joint Conference on Natural Language Processing and the 4th Conference of the Asia-Pacific Chapter of the Association for Computational Linguistics, IJCNLP-AACL 2025, Mumbai, India, December 20-24, 2025. pages 452-472, The Asian Federation of Natural Language Processing and The Association for Computational Linguistics, 2025. [doi]

Authors

Long Nguyen

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Quynh Vo

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Hung Luu

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Tho Quan

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