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Ning-Hua Yang

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#machine learning Preprint Oct 2026

P2TPO: Structure-Aligned Page-to-Token Credit Assignment for Full-Page Document Parsing

This work introduces Page-to-Token Policy Optimization (P2TPO), a structure-aligned credit-assignment framework that operates on full-page policy trajectories that outperforms all evaluated policy optimization baselines in seed-averaged scores on each of the six document parsing benchmarks.

Yong-Zhou-Shi-、-Lan-Shan-Xian-Ti-Gai-Wei-Lian-He-D Zu, Ning-Hua Yang, Ze-Zhong Tan et al. · 0 citations