HERO: Hierarchical Evidential Reasoning Optimization for Radiology Report Generation via Reason-then-Summarize

arXiv:2601.03321 · cs.LG, cs.AI · Submitted 2026-01-06 · Read on arXiv

cs.LG, cs.AI

Submitted: 2026-01-06

Updated: 2026-10-12

Terminology

• Hallucination — 2× in this paper · explained in 4 episodes
• Hierarchical Evidential Reasoning Optimization — 2× in this paper
• Reinforcement Learning — 2× in this paper · explained in 4 episodes
• Accuracy — 1× in this paper · explained in 1 episode
• Consistency — 1× in this paper · explained in 3 episodes
• Decoupling — 1× in this paper · explained in 2 episodes
• GRPO — 1× in this paper · explained in 6 episodes
• Grounding — 1× in this paper · explained in 3 episodes
• Group Relative Policy Optimization (GRPO) — 1× in this paper · explained in 5 episodes
• Reinforcement Learning (RL) — 1× in this paper · explained in 25 episodes

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