{"type": "article", "title": "Difficulty-Adaptive Tree-Structured Policy Optimization for Expanding Reasoning Coverage in RLVR", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/difficulty-adaptive-tree-structured-policy-optimization-for-expanding-reasoning", "original_source": "https://aiflash.com/news/116759/", "published": "2026-09-10T02:30:39+00:00", "accessed": "2026-09-10", "id": "difficulty-adaptive-tree-structured-policy-optimization-for-expanding-reasoning"}