Hierarchical Character Tagger for Short Text Spelling Error Correction Mengyi Gao author Canran Xu author Peng Shi author 2021-11 text Proceedings of the Seventh Workshop on Noisy User-generated Text (W-NUT 2021) Wei Xu editor Alan Ritter editor Tim Baldwin editor Afshin Rahimi editor Association for Computational Linguistics Online conference publication gao-etal-2021-hierarchical 10.18653/v1/2021.wnut-1.13 https://aclanthology.org/2021.wnut-1.13/ 2021-11 106 113