KCTS: Knowledge-Constrained Tree Search Decoding with Token-Level Hallucination Detection Sehyun Choi author Tianqing Fang author Zhaowei Wang author Yangqiu Song author 2023-12 text Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing Houda Bouamor editor Juan Pino editor Kalika Bali editor Association for Computational Linguistics Singapore conference publication choi-etal-2023-kcts 10.18653/v1/2023.emnlp-main.867 https://aclanthology.org/2023.emnlp-main.867/ 2023-12 14035 14053