arXivYoungjun Yu, Sanghwan Jang, Hwanjo YuTue, Sep 8, 2026, 5:21 AM PDT
score 16.9
Training trick expands AI models’ problem-solving coverage
Original: Difficulty-Adaptive Tree-Structured Policy Optimization for Expanding Reasoning Coverage in RLVR
Source: arxiv.org ↗
Writing ELI5 summary…