Yu Li 0013 Baolin Peng Yelong Shen Yi Mao Lars Liden Zhou Yu 0005 Jianfeng Gao 0001 Knowledge-Grounded Dialogue Generation with a Unified Knowledge Representation. 206-218 2022 NAACL-HLT https://doi.org/10.18653/v1/2022.naacl-main.15 https://aclanthology.org/2022.naacl-main.15 conf/naacl/2022 db/conf/naacl/naacl2022.html#LiPSMLYG22