{"type": "article", "title": "Improving Heart-Focused Medical Question Answering in LLMs via Variance-Aware Rubric Rewards with GRPO", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/improving-heart-focused-medical-question-answering-in-llms-via-variance-aware", "original_source": "https://arxiv.org/abs/2606.05174", "published": "2026-06-05T04:00:00+00:00", "accessed": "2026-06-05", "id": "improving-heart-focused-medical-question-answering-in-llms-via-variance-aware"}