Author

Zheng-Hua Lei

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Preprint Aug 2026

DocTrace: Towards Traceable Long Document VQA via Hierarchical Evidence Graph Reasoning

This paper proposes DocTrace, a hierarchical framework that progressively performs evidence localization, structured document parsing, and evidence graph reasoning to enable explicit evidence provenance, and develops a two-stage training framework.

Lei Xiang, Zhi-Cheng Guan, Hong Chen et al. · 0 citations