From Characters to Words: Hierarchical Pre-trained Language Model for Open-vocabulary Language Understanding Li Sun author Florian Luisier author Kayhan Batmanghelich author Dinei Florencio author Cha Zhang author 2023-07 text Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers) Anna Rogers editor Jordan Boyd-Graber editor Naoaki Okazaki editor Association for Computational Linguistics Toronto, Canada conference publication sun-etal-2023-characters 10.18653/v1/2023.acl-long.200 https://aclanthology.org/2023.acl-long.200/ 2023-07 3605 3620