Hu, Y., Liu, T., Zhou, Z., Zeng, W., Tan, Z., & Zhao, X. (2026). Iterative Multi-Granular RAG with Contextual Hierarchical Graph. Proceedings of the AAAI Conference on Artificial Intelligence, 40(37), 31095–31103. https://doi.org/10.1609/aaai.v40i37.40370