Wei, Chunyu, Huaiyu Qin, Siyuan He, Yunhai Wang, and Yueguo Chen. “T-Retriever: Tree-Based Hierarchical Retrieval Augmented Generation for Textual Graphs”. Proceedings of the AAAI Conference on Artificial Intelligence 40, no. 19 (March 14, 2026): 15924–15932. Accessed May 15, 2026. https://ojs.aaai.org/index.php/AAAI/article/view/38625.