DocStruct: A Multimodal Method to Extract Hierarchy Structure in Document for General Form Understanding Zilong Wang author Mingjie Zhan author Xuebo Liu author Ding Liang author 2020-11 text Findings of the Association for Computational Linguistics: EMNLP 2020 Trevor Cohn editor Yulan He editor Yang Liu editor Association for Computational Linguistics Online conference publication wang-etal-2020-docstruct 10.18653/v1/2020.findings-emnlp.80 https://aclanthology.org/2020.findings-emnlp.80/ 2020-11 898 908