Hit the Sweet Spot! Span-Level Ensemble for Large Language Models Yangyifan Xu author Jianghao Chen author Junhong Wu author Jiajun Zhang author 2025-01 text Proceedings of the 31st International Conference on Computational Linguistics Owen Rambow editor Leo Wanner editor Marianna Apidianaki editor Hend Al-Khalifa editor Barbara Di Eugenio editor Steven Schockaert editor Association for Computational Linguistics Abu Dhabi, UAE conference publication xu-etal-2025-hit https://aclanthology.org/2025.coling-main.555/ 2025-01 8314 8325