Junwei He

works on

counterfactual replay 1 language models 1 reinforcement learning 1 rubric-based evaluation 1 token-level credit 1

From the 1 of 2 linked papers with an AI index.

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cs.AI2026

CoRT: Counterfactual Replay for Token-Level Rubric-Guided Policy Optimization

Bo-Wen Zhang, Junwei He, Wen Wang +5

The paper introduces CoRT, a method that uses counterfactual replay to assign token-level credit in rubric-guided reinforcement learning for language models, improving credit alloc…