{"type": "article", "title": "Compositional Reasoning in Language Models under Reinforcement Learning Post-Training", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/compositional-reasoning-in-language-models-under-reinforcement-learning-post", "original_source": "https://arxiv.org/abs/2609.19465", "published": "2026-09-18T04:00:00+00:00", "accessed": "2026-09-18", "id": "compositional-reasoning-in-language-models-under-reinforcement-learning-post"}