{"type": "article", "title": "Probing the Origins of Reasoning Performance: Representational Quality for Mathematical Problem-Solving in RL vs. SFT Fine-Tuned Models", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/probing-the-origins-of-reasoning-performance-representational-quality-for-in-rl", "original_source": "https://www.machinebrief.com/news/probing-the-origins-of-reasoning-performance-representationa-nqga", "published": "2026-07-30T04:00:00+00:00", "accessed": "2026-07-30", "id": "probing-the-origins-of-reasoning-performance-representational-quality-for-in-rl"}