Learning to Navigate Unseen Environments: Back Translation with Environmental Dropout Hao Tan author Licheng Yu author Mohit Bansal author 2019-06 text Proceedings of the 2019 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, Volume 1 (Long and Short Papers) Jill Burstein editor Christy Doran editor Thamar Solorio editor Association for Computational Linguistics Minneapolis, Minnesota conference publication tan-etal-2019-learning 10.18653/v1/N19-1268 https://aclanthology.org/N19-1268/ 2019-06 2610 2621