Group-wise Contrastive Learning for Neural Dialogue Generation Hengyi Cai author Hongshen Chen author Yonghao Song author Zhuoye Ding author Yongjun Bao author Weipeng Yan author Xiaofang Zhao 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 cai-etal-2020-group 10.18653/v1/2020.findings-emnlp.70 https://aclanthology.org/2020.findings-emnlp.70/ 2020-11 793 802