Z-Code++: A Pre-trained Language Model Optimized for Abstractive Summarization Pengcheng He author Baolin Peng author Song Wang author Yang Liu author Ruochen Xu author Hany Hassan author Yu Shi author Chenguang Zhu author Wayne Xiong author Michael Zeng author Jianfeng Gao author Xuedong Huang 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 he-etal-2023-z 10.18653/v1/2023.acl-long.279 https://aclanthology.org/2023.acl-long.279/ 2023-07 5095 5112