Li, Yinglu, Zhiying Lu, Zhihang Liu, Yiwei Sun, Chuanbin Liu, and Hongtao Xie. “RegionRAG: Region-Level Retrieval-Augmented Generation for Visual Document Understanding”. Proceedings of the AAAI Conference on Artificial Intelligence 40, no. 8 (March 14, 2026): 6662–6670. Accessed May 12, 2026. https://ojs.aaai.org/index.php/AAAI/article/view/37597.