%0 Conference Proceedings %T SubeventWriter: Iterative Sub-event Sequence Generation with Coherence Controller %A Wang, Zhaowei %A Zhang, Hongming %A Fang, Tianqing %A Song, Yangqiu %A Wong, Ginny %A See, Simon %Y Goldberg, Yoav %Y Kozareva, Zornitsa %Y Zhang, Yue %S Proceedings of the 2022 Conference on Empirical Methods in Natural Language Processing %D 2022 %8 December %I Association for Computational Linguistics %C Abu Dhabi, United Arab Emirates %F wang-etal-2022-subeventwriter %X In this paper, we propose a new task of sub-event generation for an unseen process to evaluate the understanding of the coherence of sub-event actions and objects. To solve the problem, we design SubeventWriter, a sub-event sequence generation framework with a coherence controller. Given an unseen process, the framework can iteratively construct the sub-event sequence by generating one sub-event at each iteration. We also design a very effective coherence controller to decode more coherent sub-events. As our extensive experiments and analysis indicate, SubeventWriter can generate more reliable and meaningful sub-event sequences for unseen processes. %R 10.18653/v1/2022.emnlp-main.103 %U https://aclanthology.org/2022.emnlp-main.103 %U https://doi.org/10.18653/v1/2022.emnlp-main.103 %P 1590-1604