GhostBERT: Generate More Features with Cheap Operations for BERT Zhiqi Huang author Lu Hou author Lifeng Shang author Xin Jiang author Xiao Chen author Qun Liu author 2021-08 text Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing (Volume 1: Long Papers) Chengqing Zong editor Fei Xia editor Wenjie Li editor Roberto Navigli editor Association for Computational Linguistics Online conference publication huang-etal-2021-ghostbert 10.18653/v1/2021.acl-long.509 https://aclanthology.org/2021.acl-long.509/ 2021-08 6512 6523