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Reward models trained through Reinforcement Learning from AI Feedback (RLAIF) methods frequently suffer from limited generalizability, which hinders the alignment performance of policy models. This challenge stems from various issues,…

人工智能 · 计算机科学 2026-04-21 Jiaye Lin , Mengdi Li , Xufeng Zhao , Wenhao Lu , Peilin Zhao , Stefan Wermter , Di Wang

Reinforcement learning from human feedback (RLHF) replaces hard-to-specify rewards with pairwise trajectory preferences, yet regret-oriented theory often assumes that preference labels are generated consistently from a single ground-truth…

机器学习 · 计算机科学 2026-04-03 Ming Shi , Yingbin Liang , Ness B. Shroff , Ananthram Swami

Learning rewards from preference feedback has become an important tool in the alignment of agentic models. Preference-based feedback, often implemented as a binary comparison between multiple completions, is an established method to acquire…

机器学习 · 计算机科学 2025-03-03 Yannick Metz , András Geiszl , Raphaël Baur , Mennatallah El-Assady

This paper studies the alignment process of generative models with Reinforcement Learning from Human Feedback (RLHF). We first identify the primary challenges of existing popular methods like offline PPO and offline DPO as lacking in…

机器学习 · 计算机科学 2024-05-02 Wei Xiong , Hanze Dong , Chenlu Ye , Ziqi Wang , Han Zhong , Heng Ji , Nan Jiang , Tong Zhang

The success of reinforcement learning from human feedback (RLHF) in language model alignment is strongly dependent on the quality of the underlying reward model. In this paper, we present a novel approach to improve reward model quality by…

计算与语言 · 计算机科学 2024-10-28 Alizée Pace , Jonathan Mallinson , Eric Malmi , Sebastian Krause , Aliaksei Severyn

Reinforcement learning from human feedback (RLHF) has been an effective technique for aligning AI systems with human values, with remarkable successes in fine-tuning large-language models recently. Most existing RLHF paradigms make the…

人工智能 · 计算机科学 2024-05-28 Chanwoo Park , Mingyang Liu , Dingwen Kong , Kaiqing Zhang , Asuman Ozdaglar

Learning from human feedback (LHF) -- and in particular learning from pairwise preferences -- has recently become a crucial ingredient in training large language models (LLMs), and has been the subject of much research. Most recent works…

机器学习 · 计算机科学 2024-01-11 Vincent Dumoulin , Daniel D. Johnson , Pablo Samuel Castro , Hugo Larochelle , Yann Dauphin

Reinforcement learning from human feedback (RLHF) offers a promising approach to aligning large language models (LLMs) with human preferences. Typically, a reward model is trained or supplied to act as a proxy for humans in evaluating…

计算与语言 · 计算机科学 2025-09-12 Jiahui Li , Lin Li , Tai-wei Chang , Kun Kuang , Long Chen , Jun Zhou , Cheng Yang

Reinforcement Learning from Human Feedback (RLHF) has played a crucial role in the success of large models such as ChatGPT. RLHF is a reinforcement learning framework which combines human feedback to improve learning effectiveness and…

机器学习 · 计算机科学 2023-11-28 Feiyang Han , Yimin Wei , Zhaofeng Liu , Yanxing Qi

To improve human-preference alignment training, current research has developed numerous preference datasets consisting of preference pairs labeled as "preferred" or "dispreferred". These preference pairs are typically used to encode human…

计算与语言 · 计算机科学 2024-10-08 Chenglong Wang , Yang Gan , Yifu Huo , Yongyu Mu , Qiaozhi He , Murun Yang , Tong Xiao , Chunliang Zhang , Tongran Liu , Jingbo Zhu

A common and effective strategy for humans to improve an unsatisfactory outcome in daily life is to find a cause of this outcome and correct the cause. In this paper, we investigate whether this human improvement strategy can be applied to…

机器学习 · 计算机科学 2025-12-17 Shicheng Liu , Siyuan Xu , Wenjie Qiu , Hangfan Zhang , Minghui Zhu

Language models (LMs) often exhibit undesirable text generation behaviors, including generating false, toxic, or irrelevant outputs. Reinforcement learning from human feedback (RLHF) - where human preference judgments on LM outputs are…

Offline reinforcement learning (RL) is an effective tool for real-world recommender systems with its capacity to model the dynamic interest of users and its interactive nature. Most existing offline RL recommender systems focus on…

信息检索 · 计算机科学 2025-05-13 Yi Zhang , Ruihong Qiu , Jiajun Liu , Sen Wang

Aligning human preference and value is an important requirement for contemporary foundation models. State-of-the-art techniques such as Reinforcement Learning from Human Feedback (RLHF) often consist of two stages: 1) supervised fine-tuning…

人工智能 · 计算机科学 2024-10-29 Jiaxiang Li , Siliang Zeng , Hoi-To Wai , Chenliang Li , Alfredo Garcia , Mingyi Hong

Reinforcement Learning with Human Feedback (RLHF) is a widely used fine-tuning approach that aligns machine learning model, particularly Language Model (LM) with human preferences. There are typically multiple objectives driving the…

机器学习 · 计算机科学 2025-02-25 Nuoya Xiong , Aarti Singh

The ability of reinforcement learning algorithms to learn effective policies is determined by the rewards available during training. However, for practical problems, obtaining large quantities of reward labels is often infeasible due to…

机器学习 · 计算机科学 2025-10-02 Shreyas Chaudhari , Renhao Zhang , Philip S. Thomas , Bruno Castro da Silva

Reinforcement Learning from Human Feedback (RLHF) is commonly employed to tailor models to human preferences, especially to improve the safety of outputs from large language models (LLMs). Traditionally, this method depends on selecting…

计算与语言 · 计算机科学 2025-01-29 Xiaomin Li , Mingye Gao , Zhiwei Zhang , Jingxuan Fan , Weiyu Li

Reinforcement Learning from Human Feedback (RLHF) is a pivotal technique that aligns language models closely with human-centric values. The initial phase of RLHF involves learning human values using a reward model from ranking data. It is…

机器学习 · 计算机科学 2024-01-30 Banghua Zhu , Michael I. Jordan , Jiantao Jiao

To use reinforcement learning from human feedback (RLHF) in practical applications, it is crucial to learn reward models from diverse sources of human feedback and to consider human factors involved in providing feedback of different types.…

机器学习 · 计算机科学 2023-08-09 Yannick Metz , David Lindner , Raphaël Baur , Daniel Keim , Mennatallah El-Assady

Reinforcement Learning from Human Feedback (RLHF) assumes annotator preferences reflect stable internal states. We challenge this through three experiments spanning the preference pipeline. In a human choice blindness study, 91% of…

计算与语言 · 计算机科学 2026-03-10 Wenbin Wu