Kim, S.-K., A. Bouman, G. Salhotra, D. D. Fan, K. Otsu, J. Burdick, and A.- akbar Agha-mohammadi. “PLGRIM: Hierarchical Value Learning for Large-Scale Exploration in Unknown Environments”. Proceedings of the International Conference on Automated Planning and Scheduling, vol. 31, no. 1, May 2021, pp. 652-6, doi:10.1609/icaps.v31i1.16014.