RREDCoT: Segment-Level Reward Redistribution for Reasoning Models

Published
Source
arXiv
Paper number
333
Field
Machine Learning
arXiv ID
2606.06475

Key points

  • The method addresses the delayed-reward problem in chain-of-thought reasoning through segment-level reward redistribution.
  • We use the model itself to approximate optimal reward redistribution without additional generation.
  • This greatly reduces computational overhead compared with Monte Carlo sampling.
  • We perform credit assignment by identifying CoT segments that contribute to reaching the correct answer.
  • We systematically analyze design choices for CoT segmentation and state-value estimation.

Paper links

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