@inproceedings{xiong-etal-2026-hievi, title = "{H}i{E}vi-{RAG}: Hierarchical Evidence-Driven Reasoning for Long Document Understanding", author = "Xiong, Junyu and Wang, Yonghui and Gu, Rongjian and Liu, Chenyu and Yin, Bing and Zhou, Wengang and Li, Houqiang", editor = "Lee, Hung-Yi and Dev, Sunipa and Li, Jessy and Elliott, Desmond", booktitle = "Proceedings of the 2026 Conference on Empirical Methods in Natural Language Processing", month = oct, year = "2026", address = "Budapest, Hungary", publisher = "Association for Computational Linguistics", url = "https://aclanthology.org/2026.emnlp-main.311/", pages = "7167--7181", ISBN = "979-8-89176-459-0" }