Wen, Y., Li, S., Zuo, R., Yuan, L., Mao, H., & Liu, P. (2025). SkillTree: Explainable Skill-Based Deep Reinforcement Learning for Long-Horizon Control Tasks. Proceedings of the AAAI Conference on Artificial Intelligence, 39(20), 21491–21500. https://doi.org/10.1609/aaai.v39i20.35451