code-repair

Proposes Anchored Self-Play (ASP), a method for scaling code repair supervision via generator–fixer self-play with an embedding-similarity reward and reference bug mixing, achieving +24% relative improvement in fix rates over standard self-play on a new benchmark BugSourceBench.

PatchWorld introduces a gradient-free framework that transforms offline trajectories into executable Python world models via counterexample-guided code repair, enabling interpretable and inspectable belief-state programs for planning in partially observable environments.

This paper proposes a signal reshaping method for Group Relative Policy Optimization (GRPO) to improve weak-feedback agentic code repair, showing significant gains in compile and semantic accuracy.