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20242026
most citedDoes RAG Introduce Unfairness in LLMs? Evaluating Fairness in Retrieval-Augmented Generation Systems

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cs.AI2026

Spurious Advantage Hidden in GRPO

Jiamian Wang, Samyadeep Basu, Koustava Goswami +2

Group Relative Policy Optimization (GRPO) is widely studied for reinforcement learning with verifiable rewards, where its advantage estimator assigns each rollout a magnitude from…