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The success of AI assistants based on language models (LLMs) hinges crucially on Reinforcement Learning from Human Feedback (RLHF), which enables the generation of responses more aligned with human preferences. As universal AI assistants,…

Machine Learning · Computer Science 2023-12-27 Rui Zheng , Wei Shen , Yuan Hua , Wenbin Lai , Shihan Dou , Yuhao Zhou , Zhiheng Xi , Xiao Wang , Haoran Huang , Tao Gui , Qi Zhang , Xuanjing Huang

Reinforcement Learning from Human Feedback (RLHF) is crucial for aligning large language models with human preferences. While recent research has focused on algorithmic improvements, the importance of prompt-data construction has been…

Machine Learning · Computer Science 2025-04-03 Wei Shen , Guanlin Liu , Zheng Wu , Ruofei Zhu , Qingping Yang , Chao Xin , Yu Yue , Lin Yan

The effectiveness of reinforcement learning (RL) agents in continuous control robotics tasks is mainly dependent on the design of the underlying reward function, which is highly prone to reward hacking. A misalignment between the reward…

Reinforcement learning (RL) has significantly enhanced the reasoning capabilities of large language models (LLMs), but its reliance on expensive human-labeled data or complex reward models severely limits scalability. While existing…

Artificial Intelligence · Computer Science 2025-08-19 Wenzhen Yuan , Shengji Tang , Weihao Lin , Jiacheng Ruan , Ganqu Cui , Bo Zhang , Tao Chen , Ting Liu , Yuzhuo Fu , Peng Ye , Lei Bai

Reinforcement Learning from Human Feedback (RLHF) has emerged as a popular paradigm for capturing human intent to alleviate the challenges of hand-crafting the reward values. Despite the increasing interest in RLHF, most works learn black…

Machine Learning · Computer Science 2024-10-14 Akansha Kalra , Daniel S. Brown

This paper presents a novel approach to aligning large language models (LLMs) with individual human preferences, sometimes referred to as Reinforcement Learning from \textit{Personalized} Human Feedback (RLPHF). Given stated preferences…

Artificial Intelligence · Computer Science 2024-07-08 Jin Peng Zhou , Katie Z Luo , Jingwen Gu , Jason Yuan , Kilian Q. Weinberger , Wen Sun

Rewards serve as proxies for human preferences and play a crucial role in Reinforcement Learning from Human Feedback (RLHF). However, if these rewards are inherently imperfect, exhibiting various biases, they can adversely affect the…

Machine Learning · Computer Science 2025-11-12 Sheng Ouyang , Yulan Hu , Ge Chen , Qingyang Li , Fuzheng Zhang , Yong Liu

Reinforcement Learning from Human Feedback (RLHF) has emerged as a key technique for post-training large language models. Despite its empirical success, the theoretical understanding of RLHF is still limited, as learning the KL-regularized…

Machine Learning · Computer Science 2025-10-29 Di Wu , Chengshuai Shi , Jing Yang , Cong Shen

Learning from human preferences is a cornerstone of aligning machine learning models with subjective human judgments. Yet, collecting such preference data is often costly and time-consuming, motivating the need for more efficient learning…

Machine Learning · Computer Science 2025-11-07 Matteo Cercola , Valeria Capretti , Simone Formentin

Reinforcement Learning from Human Feedback (RLHF) has become a cornerstone for aligning large language models (LLMs) with human values. However, existing approaches struggle to capture the multi-dimensional, distributional nuances of human…

Computation and Language · Computer Science 2025-05-20 Zelei Cheng , Xin-Qiang Cai , Yuting Tang , Pushi Zhang , Boming Yang , Masashi Sugiyama , Xinyu Xing

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…

Machine Learning · Computer Science 2024-01-30 Banghua Zhu , Michael I. Jordan , Jiantao Jiao

A centerpiece of the ever-popular reinforcement learning from human feedback (RLHF) approach to fine-tuning autoregressive language models is the explicit training of a reward model to emulate human feedback, distinct from the language…

Computation and Language · Computer Science 2023-05-22 Wanqiao Xu , Shi Dong , Dilip Arumugam , Benjamin Van Roy

Reinforcement Learning from Human Feedback significantly enhances Natural Language Processing by aligning language models with human expectations. A critical factor in this alignment is the strength of reward models used during training.…

Computation and Language · Computer Science 2024-10-17 Yanjun Chen , Dawei Zhu , Yirong Sun , Xinghao Chen , Wei Zhang , Xiaoyu Shen

Current audio captioning relies on supervised learning with paired audio-caption data, which is costly to curate and may not reflect human preferences in real-world scenarios. To address this, we propose a preference-aligned audio…

Audio and Speech Processing · Electrical Eng. & Systems 2026-02-26 Kartik Hegde , Rehana Mahfuz , Yinyi Guo , Erik Visser

Safe Reinforcement Learning from Human Feedback (Safe RLHF) has recently achieved empirical success in developing helpful and harmless large language models by decoupling human preferences regarding helpfulness and harmlessness. Existing…

Machine Learning · Computer Science 2026-04-22 Qiang Liu , Adrienne Kline , Ermin Wei

Reinforcement Learning from Human Feedback (RLHF) is a key method for aligning large language models (LLMs) with human preferences. However, current offline alignment approaches like DPO, IPO, and SLiC rely heavily on fixed preference…

Machine Learning · Computer Science 2024-06-25 Mucong Ding , Souradip Chakraborty , Vibhu Agrawal , Zora Che , Alec Koppel , Mengdi Wang , Amrit Bedi , Furong Huang

Reinforcement Learning from Human Feedback aligns the outputs of Large Language Models with human values and preferences. Central to this process is the reward model (RM), which translates human feedback into training signals for optimising…

Artificial Intelligence · Computer Science 2025-09-23 Zeyu Huang , Zihan Qiu , Zili Wang , Edoardo M. Ponti , Ivan Titov

Large Language Models (LLMs) increasingly rely on Supervised Fine-Tuning (SFT) and Reinforcement Learning from Human Feedback (RLHF) to align model responses with human preferences. While RLHF employs a reinforcement learning approach with…

Human-Computer Interaction · Computer Science 2025-06-05 Alex Sotiropoulos , Sulyab Thottungal Valapu , Linus Lei , Jared Coleman , Bhaskar Krishnamachari

Reinforcement learning from human feedback (RLHF) is a powerful technique for training agents to perform difficult-to-specify tasks. However, human feedback can be noisy, particularly when human teachers lack relevant knowledge or…

Machine Learning · Computer Science 2022-11-15 Oliver Daniels-Koch , Rachel Freedman

Reinforcement Learning from Human Feedback (RLHF) and its variants have emerged as the dominant approaches for aligning Large Language Models with human intent. While empirically effective, the theoretical generalization properties of these…

Machine Learning · Computer Science 2026-01-26 Zhaochun Li , Mingyang Yi , Yue Wang , Shisheng Cui , Yong Liu