Visual-Language Navigation Pretraining via Prompt-based Environmental Self-exploration Xiwen Liang author Fengda Zhu author Li Lingling author Hang Xu author Xiaodan Liang author 2022-05 text Proceedings of the 60th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers) Smaranda Muresan editor Preslav Nakov editor Aline Villavicencio editor Association for Computational Linguistics Dublin, Ireland conference publication liang-etal-2022-visual 10.18653/v1/2022.acl-long.332 https://aclanthology.org/2022.acl-long.332/ 2022-05 4837 4851