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Zecheng Tang · Quantong Qiu · Yi Yang · Zhiyi Hong · Haiya Xiang · Kebin Liu · Qingqing Dang · Juntao Li · Min Zhang
Huiyao Chen · Yi Yang · Yinghui Li · Meishan Zhang · Baotian Hu · Min Zhang
Existing long-document question answering systems typically process texts as flat sequences or use heuristic chunking, which overlook the discourse structures that naturally guide human comprehension. We present a discourse-aware hierarchical framework that leverages rhetorical structure theory (...