Li, Xintong, Haoran Zhang, and Xiao Zhou. “Spatio-Temporal Hierarchical Causal Models”. Proceedings of the AAAI Conference on Artificial Intelligence 40, no. 28 (March 14, 2026): 23230–23238. Accessed May 19, 2026. https://ojs.aaai.org/index.php/AAAI/article/view/39491.