Outcome-Refining Process Supervision for Code Generation

• URL: http://arxiv.org/abs/2412.15118v1
• Date: Thu, 19 Dec 2024 17:59:42 GMT
• Title: Outcome-Refining Process Supervision for Code Generation
• Authors: Zhuohao Yu, Weizheng Gu, Yidong Wang, Zhengran Zeng, Jindong Wang, Wei Ye, Shikun Zhang,
• Abstract summary: Large Language Models struggle with complex programming tasks that require deep algorithmic reasoning.<n>We propose Outcome-Refining Process Supervision, a novel paradigm that treats outcome refinement itself as the process to be supervised.<n>Our approach achieves significant improvements across 5 models and 3 datasets: an average of 26.9% increase in correctness and 42.2% in efficiency.
• Score: 28.6680126802249
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Large Language Models have demonstrated remarkable capabilities in code generation, yet they often struggle with complex programming tasks that require deep algorithmic reasoning. While process supervision through learned reward models shows promise in guiding reasoning steps, it requires expensive training data and suffers from unreliable evaluation. We propose Outcome-Refining Process Supervision, a novel paradigm that treats outcome refinement itself as the process to be supervised. Our framework leverages concrete execution signals to ground the supervision of reasoning steps, while using tree-structured exploration to maintain multiple solution trajectories simultaneously. Experiments demonstrate that our approach enables even smaller models to achieve high success accuracy and performance metrics on competitive programming tasks, creates more reliable verification than traditional reward models without requiring training PRMs. Our approach achieves significant improvements across 5 models and 3 datasets: an average of 26.9% increase in correctness and 42.2% in efficiency. The results suggest that providing structured reasoning space with concrete verification signals is crucial for solving complex programming tasks. We open-source all our code and data at: https://github.com/zhuohaoyu/ORPS

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