AURORA:Automated Training Framework of Universal Process Reward Models via Ensemble Prompting and Reverse Verification

• URL: http://arxiv.org/abs/2502.11520v1
• Date: Mon, 17 Feb 2025 07:41:27 GMT
• Title: AURORA:Automated Training Framework of Universal Process Reward Models via Ensemble Prompting and Reverse Verification
• Authors: Xiaoyu Tan, Tianchu Yao, Chao Qu, Bin Li, Minghao Yang, Dakuan Lu, Haozhe Wang, Xihe Qiu, Wei Chu, Yinghui Xu, Yuan Qi,
• Abstract summary: We present AURORA, a novel framework for training universal process reward models (PRMs) using ensemble prompting and reverse verification.<n>The framework employs a two-phase approach: First, it uses diverse prompting strategies and ensemble methods to perform automated annotation and evaluation of processes.<n>To assess the framework's performance, we extend beyond the existing ProcessBench benchmark by introducing UniversalBench.
• Score: 31.463529258956452
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The reasoning capabilities of advanced large language models (LLMs) like o1 have revolutionized artificial intelligence applications. Nevertheless, evaluating and optimizing complex reasoning processes remain significant challenges due to diverse policy distributions and the inherent limitations of human effort and accuracy. In this paper, we present AURORA, a novel automated framework for training universal process reward models (PRMs) using ensemble prompting and reverse verification. The framework employs a two-phase approach: First, it uses diverse prompting strategies and ensemble methods to perform automated annotation and evaluation of processes, ensuring robust assessments for reward learning. Second, it leverages practical reference answers for reverse verification, enhancing the model's ability to validate outputs and improving training accuracy. To assess the framework's performance, we extend beyond the existing ProcessBench benchmark by introducing UniversalBench, which evaluates reward predictions across full trajectories under diverse policy distribtion with long Chain-of-Thought (CoT) outputs. Experimental results demonstrate that AURORA enhances process evaluation accuracy, improves PRMs' accuracy for diverse policy distributions and long-CoT responses. The project will be open-sourced at https://auroraprm.github.io/. The Universal-PRM-7B is available at https://huggingface.co/infly/Universal-PRM-7B.

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