Muon optimizer boosts training success for long-horizon repository agents

Combining Muon with single-rollout async updates, importance correction, and auxiliary penalties outperforms SPO baselines across two model families.

Research Lab
Kai Ruan · Jinghao Lin · Tao Chen · Ziqi Zhou · Qianshan Wei · Zihe Huang

Renmin University of China · Duke University · Institute of Automation, Chinese Academy of Sciences · Institute of Computing Technology, Chinese Academy of Sciences

Research Digest··2 min read
The authors evaluate a reinforcement-learning recipe for repository-level issue resolution that pairs the Muon optimizer with single-rollout asynchronous policy updates, token-averaged loss, truncated importance sampling, and auxiliary penalties.

The authors study reinforcement learning for repository-level issue resolution, where an agent must interpret an issue, edit code, and validate patches over long trajectories.

Why this paper

From Institute of Automation, Chinese Academy of Sciences and 3 others · Part of RL for Tool Agents, now 23 papers

In one line

Muon optimizer combined with token-averaged loss and auxiliary penalties improves training success in long-horizon RL for repository-level issue resolution.

What we could check

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  • ·No stated limitations found
  • ·No benchmark numbers found

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Research Digest

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