Kim, S.-K., Bouman, A., Salhotra, G., Fan, D.D., Otsu, K., Burdick, J. and 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 (May 2021), 652-662. DOI:https://doi.org/10.1609/icaps.v31i1.16014.