一作ACL 2026Poster· Natural Language Processing
Beyond Chunking: Discourse-Aware Hierarchical Retrieval for Long Document Question Answering
Huiyao Chen · Yi Yang · Yinghui Li · Meishan Zhang · Baotian Hu · Min Zhang
摘要
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 (...