Easy-to-Hard Generalization: Scalable Alignment Beyond Human Supervision

Fuente: arXiv
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Auteurs principaux: Sun, Zhiqing, Yu, Longhui, Shen, Yikang, Liu, Weiyang, Yang, Yiming, Welleck, Sean, Gan, Chuang
Format: Preprint
Publié: 2024
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author Sun, Zhiqing
Yu, Longhui
Shen, Yikang
Liu, Weiyang
Yang, Yiming
Welleck, Sean
Gan, Chuang
author_facet Sun, Zhiqing
Yu, Longhui
Shen, Yikang
Liu, Weiyang
Yang, Yiming
Welleck, Sean
Gan, Chuang
contents Current AI alignment methodologies rely on human-provided demonstrations or judgments, and the learned capabilities of AI systems would be upper-bounded by human capabilities as a result. This raises a challenging research question: How can we keep improving the systems when their capabilities have surpassed the levels of humans? This paper answers this question in the context of tackling hard reasoning tasks (e.g., level 4-5 MATH problems) via learning from human annotations on easier tasks (e.g., level 1-3 MATH problems), which we term as easy-to-hard generalization. Our key insight is that an evaluator (reward model) trained on supervisions for easier tasks can be effectively used for scoring candidate solutions of harder tasks and hence facilitating easy-to-hard generalization over different levels of tasks. Based on this insight, we propose a novel approach to scalable alignment, which firstly trains the (process-supervised) reward models on easy problems (e.g., level 1-3), and then uses them to evaluate the performance of policy models on hard problems. We show that such easy-to-hard generalization from evaluators can enable easy-to-hard generalizations in generators either through re-ranking or reinforcement learning (RL). Notably, our process-supervised 7b RL model and 34b model (reranking@1024) achieves an accuracy of 34.0% and 52.5% on MATH500, respectively, despite only using human supervision on easy problems. Our approach suggests a promising path toward AI systems that advance beyond the frontier of human supervision.
format Preprint
id arxiv_https___arxiv_org_abs_2403_09472
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Easy-to-Hard Generalization: Scalable Alignment Beyond Human Supervision
Sun, Zhiqing
Yu, Longhui
Shen, Yikang
Liu, Weiyang
Yang, Yiming
Welleck, Sean
Gan, Chuang
Machine Learning
Artificial Intelligence
Computation and Language
Current AI alignment methodologies rely on human-provided demonstrations or judgments, and the learned capabilities of AI systems would be upper-bounded by human capabilities as a result. This raises a challenging research question: How can we keep improving the systems when their capabilities have surpassed the levels of humans? This paper answers this question in the context of tackling hard reasoning tasks (e.g., level 4-5 MATH problems) via learning from human annotations on easier tasks (e.g., level 1-3 MATH problems), which we term as easy-to-hard generalization. Our key insight is that an evaluator (reward model) trained on supervisions for easier tasks can be effectively used for scoring candidate solutions of harder tasks and hence facilitating easy-to-hard generalization over different levels of tasks. Based on this insight, we propose a novel approach to scalable alignment, which firstly trains the (process-supervised) reward models on easy problems (e.g., level 1-3), and then uses them to evaluate the performance of policy models on hard problems. We show that such easy-to-hard generalization from evaluators can enable easy-to-hard generalizations in generators either through re-ranking or reinforcement learning (RL). Notably, our process-supervised 7b RL model and 34b model (reranking@1024) achieves an accuracy of 34.0% and 52.5% on MATH500, respectively, despite only using human supervision on easy problems. Our approach suggests a promising path toward AI systems that advance beyond the frontier of human supervision.
title Easy-to-Hard Generalization: Scalable Alignment Beyond Human Supervision
topic Machine Learning
Artificial Intelligence
Computation and Language
url https://arxiv.org/abs/2403.09472