Kim, S.-K., Bouman, A., Salhotra, G., Fan, D. D., Otsu, K., Burdick, J., & Agha-mohammadi, A.- akbar. (2021). PLGRIM: Hierarchical Value Learning for Large-scale Exploration in Unknown Environments. Proceedings of the International Conference on Automated Planning and Scheduling, 31(1), 652-662. Retrieved from https://ojs.aaai.org/index.php/ICAPS/article/view/16014