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Young Kyu Yu

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#artificial intelligence Preprint Sep 2026

Difficulty-Adaptive Tree-Structured Policy Optimization for Expanding Reasoning Coverage in RLVR

DATPO (Difficulty-Adaptive Sentence-entropy-guided Tree-structured Policy Optimization) integrates difficulty-adaptive tree search with a sibling-diversity advantage term, explicitly promoting semantic diversity to expand reasoning coverage during training.

Young Kyu Yu, Sanghwan Jang, Hwanjo Yu · 2 citations