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Reinforcement learning from human feedback usually models preferences using a reward function that does not distinguish between people. We argue that this is unlikely to be a good design choice in contexts with high potential for…

Designing a reinforcement learning from human feedback (RLHF) algorithm to approximate a human's unobservable reward function requires assuming, implicitly or explicitly, a model of human preferences. A preference model that poorly…

机器学习 · 计算机科学 2026-04-14 Stephane Hatgis-Kessell , W. Bradley Knox , Serena Booth , Peter Stone

In aligning large language models (LLMs), utilizing feedback from existing advanced AI rather than humans is an important method to scale supervisory signals. However, it is highly challenging for AI to understand human intentions and…

计算与语言 · 计算机科学 2024-06-18 Rong Bao , Rui Zheng , Shihan Dou , Xiao Wang , Enyu Zhou , Bo Wang , Qi Zhang , Liang Ding , Dacheng Tao

The success of AI assistants based on Language Models (LLMs) hinges on Reinforcement Learning from Human Feedback (RLHF) to comprehend and align with user intentions. However, traditional alignment algorithms, such as PPO, are hampered by…

计算与语言 · 计算机科学 2024-07-03 Songyang Gao , Qiming Ge , Wei Shen , Shihan Dou , Junjie Ye , Xiao Wang , Rui Zheng , Yicheng Zou , Zhi Chen , Hang Yan , Qi Zhang , Dahua Lin

Human explanation (e.g., in terms of feature importance) has been recently used to extend the communication channel between human and agent in interactive machine learning. Under this setting, human trainers provide not only the ground…

人工智能 · 计算机科学 2021-10-28 Lin Guan , Mudit Verma , Sihang Guo , Ruohan Zhang , Subbarao Kambhampati

Reinforcement learning from human feedback (RLHF) has been crucial in aligning large language models (LLMs) with human values. Traditionally, RLHF involves generating responses to a query and using a reward model to assign a reward to the…

计算与语言 · 计算机科学 2024-12-04 Wenxuan Zhou , Shujian Zhang , Lingxiao Zhao , Tao Meng

Reward models (RMs) play a critical role in aligning language models through the process of reinforcement learning from human feedback. RMs are trained to predict a score reflecting human preference, which requires significant time and cost…

计算与语言 · 计算机科学 2024-10-21 Zihuiwen Ye , Fraser Greenlee-Scott , Max Bartolo , Phil Blunsom , Jon Ander Campos , Matthias Gallé

In Reinforcement Learning from Human Feedback (RLHF), it is crucial to learn suitable reward models from human feedback to align large language models (LLMs) with human intentions. However, human feedback can often be noisy, inconsistent,…

人工智能 · 计算机科学 2025-09-03 Taywon Min , Haeone Lee , Yongchan Kwon , Kimin Lee

Re-inforcement learning from human feedback (RLHF) has been effective in the task of AI alignment. However, one of the key assumptions of RLHF is that the annotators (referred to as workers from here on out) have a homogeneous response…

人机交互 · 计算机科学 2026-01-29 Sarvesh Shashidhar , Abhishek Mishra , Madhav Kotecha

Text-to-image (T2I) models achieve high-fidelity generation through extensive training on large datasets. However, these models may unintentionally pick up undesirable biases of their training data, such as over-representation of particular…

计算机视觉与模式识别 · 计算机科学 2024-07-01 Shufan Li , Harkanwar Singh , Aditya Grover

Recently, we have witnessed great progress in image editing with natural language instructions. Several closed-source models like GPT-Image-1, Seedream, and Google-Nano-Banana have shown highly promising progress. However, the open-source…

计算机视觉与模式识别 · 计算机科学 2026-03-03 Keming Wu , Sicong Jiang , Max Ku , Ping Nie , Minghao Liu , Wenhu Chen

One-step text-to-image generator models offer advantages such as swift inference efficiency, flexible architectures, and state-of-the-art generation performance. In this paper, we study the problem of aligning one-step generator models with…

计算机视觉与模式识别 · 计算机科学 2025-06-06 Weijian Luo

Generative foundation models are susceptible to implicit biases that can arise from extensive unsupervised training data. Such biases can produce suboptimal samples, skewed outcomes, and unfairness, with potentially serious consequences.…

机器学习 · 计算机科学 2023-12-04 Hanze Dong , Wei Xiong , Deepanshu Goyal , Yihan Zhang , Winnie Chow , Rui Pan , Shizhe Diao , Jipeng Zhang , Kashun Shum , Tong Zhang

Modern large language models (LLMs) are optimized for human-aligned responses using Reinforcement Learning from Human Feedback (RLHF). However, existing RLHF approaches assume a universal preference model and fail to account for individual…

机器学习 · 计算机科学 2025-03-11 Idan Shenfeld , Felix Faltings , Pulkit Agrawal , Aldo Pacchiano

Text-Image-to-Video (TI2V) generation aims to generate a video from an image following a text description, which is also referred to as text-guided image animation. Most existing methods struggle to generate videos that align well with the…

计算机视觉与模式识别 · 计算机科学 2025-03-25 Shijie Wang , Samaneh Azadi , Rohit Girdhar , Saketh Rambhatla , Chen Sun , Xi Yin

Reinforcement Learning from Human feedback (RLHF) has become a powerful tool to fine-tune or train agentic machine learning models. Similar to how humans interact in social contexts, we can use many types of feedback to communicate our…

机器学习 · 计算机科学 2025-02-21 Yannick Metz , David Lindner , Raphaël Baur , Mennatallah El-Assady

This paper critically evaluates the attempts to align Artificial Intelligence (AI) systems, especially Large Language Models (LLMs), with human values and intentions through Reinforcement Learning from Feedback (RLxF) methods, involving…

Recent advances in text-to-video generation have produced increasingly realistic and diverse content, yet evaluating such videos remains a fundamental challenge due to their multi-faceted nature encompassing visual quality, semantic…

Conventional reinforcement learning (RL) ap proaches often struggle to learn effective policies under sparse reward conditions, necessitating the manual design of complex, task-specific reward functions. To address this limitation, rein…

机器人学 · 计算机科学 2025-12-15 Suzie Kim , Hye-Bin Shin , Seong-Whan Lee

Automatically generating feedback via large language models (LLMs) in intelligent tutoring systems and online learning platforms has the potential to improve the learning outcomes of many students. However, both feedback generation and…

计算与语言 · 计算机科学 2024-12-13 Alexander Scarlatos , Digory Smith , Simon Woodhead , Andrew Lan