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Large Vision-Language Models (LVLMs) typically follow a two-stage training paradigm-pretraining and supervised fine-tuning. Recently, preference optimization, derived from the language domain, has emerged as an effective post-training…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Yufei Zhan , Yousong Zhu , Shurong Zheng , Hongyin Zhao , Fan Yang , Ming Tang , Jinqiao Wang

Aligning large language models (LLMs) to human preferences is challenging in domains where preference data is unavailable. We address the problem of learning reward models for such target domains by leveraging feedback collected from…

Machine Learning · Computer Science 2025-01-03 David Wu , Sanjiban Choudhury

Reward model (RM) plays a pivotal role in reinforcement learning with human feedback (RLHF) for aligning large language models (LLMs). However, classical RMs trained on human preferences are vulnerable to reward hacking and generalize…

Machine Learning · Computer Science 2025-10-24 Zhenghao Xu , Qin Lu , Qingru Zhang , Liang Qiu , Ilgee Hong , Changlong Yu , Wenlin Yao , Yao Liu , Haoming Jiang , Lihong Li , Hyokun Yun , Tuo Zhao

Self-Rewarding Language Models propose an architecture in which the Large Language Models(LLMs) both generates responses and evaluates its own outputs via LLM-as-a-Judge prompting, dynamically improving its generative capabilities through…

Computation and Language · Computer Science 2025-08-11 Yidong Wang , Xin Wang , Cunxiang Wang , Junfeng Fang , Qiufeng Wang , Jianing Chu , Xuran Meng , Shuxun Yang , Libo Qin , Yue Zhang , Wei Ye , Shikun Zhang

Value trade-offs are an integral part of human decision-making and language use, however, current tools for interpreting such dynamic and multi-faceted notions of values in language models are limited. In cognitive science, so-called…

Computation and Language · Computer Science 2026-03-03 Sonia K. Murthy , Rosie Zhao , Jennifer Hu , Sham Kakade , Markus Wulfmeier , Peng Qian , Tomer Ullman

Large language models (LLMs) have emerged as powerful tools for simulating complex social phenomena using human-like agents with specific traits. In human societies, value similarity is important for building trust and close relationships;…

Computation and Language · Computer Science 2025-11-26 Yuki Sakamoto , Takahisa Uchida , Hiroshi Ishiguro

Learning from human feedback via proxy reward modeling has been studied to align Large Language Models (LLMs) with human values. However, achieving reliable training through that proxy reward model (RM) is not a trivial problem, and its…

Machine Learning · Computer Science 2024-10-08 Sungdong Kim , Minjoon Seo

Large decoder-based language models have become the dominant architecture for reward modeling in reinforcement learning from human feedback (RLHF). However, as reward models are increasingly deployed in test-time strategies, their inference…

Computation and Language · Computer Science 2025-07-15 Sarah Pan

Aligning large language models (LLMs) with human values and intents critically involves the use of human or AI feedback. While dense feedback annotations are expensive to acquire and integrate, sparse feedback presents a structural design…

Machine Learning · Computer Science 2024-02-07 Hritik Bansal , John Dang , Aditya Grover

Recent advances in large language models (LLMs) have demonstrated significant progress in performing complex tasks. While Reinforcement Learning from Human Feedback (RLHF) has been effective in aligning LLMs with human preferences, it is…

Machine Learning · Computer Science 2025-05-30 Chaoqi Wang , Zhuokai Zhao , Yibo Jiang , Zhaorun Chen , Chen Zhu , Yuxin Chen , Jiayi Liu , Lizhu Zhang , Xiangjun Fan , Hao Ma , Sinong Wang

Reward models are critical for reinforcement learning from human feedback, as they determine the alignment quality and reliability of generative models. For complex tasks such as image editing, reward models are required to capture global…

Large Language Models (LLMs) are increasingly used in decision-making scenarios that involve risk assessment, yet their alignment with human economic rationality remains unclear. In this study, we investigate whether LLMs exhibit risk…

General Economics · Economics 2025-09-16 Jiaxin Liu , Yixuan Tang , Yi Yang , Kar Yan Tam

Reinforcement learning (RL) faces challenges in evaluating policy trajectories within intricate game tasks due to the difficulty in designing comprehensive and precise reward functions. This inherent difficulty curtails the broader…

Artificial Intelligence · Computer Science 2024-07-02 Zichao Shen , Tianchen Zhu , Qingyun Sun , Shiqi Gao , Jianxin Li

Reward learning enables the application of reinforcement learning (RL) to tasks where reward is defined by human judgment, building a model of reward by asking humans questions. Most work on reward learning has used simulated environments,…

Computation and Language · Computer Science 2020-01-10 Daniel M. Ziegler , Nisan Stiennon , Jeffrey Wu , Tom B. Brown , Alec Radford , Dario Amodei , Paul Christiano , Geoffrey Irving

As large language models (LLMs) become increasingly integrated into critical applications, aligning their behavior with human values presents significant challenges. Current methods, such as Reinforcement Learning from Human Feedback…

Computation and Language · Computer Science 2025-02-25 Yipeng Kang , Junqi Wang , Yexin Li , Mengmeng Wang , Wenming Tu , Quansen Wang , Hengli Li , Tingjun Wu , Xue Feng , Fangwei Zhong , Zilong Zheng

Many capable large language models (LLMs) are developed via self-supervised pre-training followed by a reinforcement-learning fine-tuning phase, often based on human or AI feedback. During this stage, models may be guided by their inductive…

Reward modeling represents a long-standing challenge in reinforcement learning from human feedback (RLHF) for aligning language models. Current reward modeling is heavily contingent upon experimental feedback data with high collection…

Computation and Language · Computer Science 2026-03-25 Hao Wang , Haocheng Yang , Licheng Pan , Lei Shen , Xiaoxi Li , Yinuo Wang , Zhichao Chen , Yuan Lu , Haoxuan Li , Zhouchen Lin

Large language models (LLMs) are increasingly being used in human-centered social scientific tasks, such as data annotation, synthetic data creation, and engaging in dialog. However, these tasks are highly subjective and dependent on human…

Computation and Language · Computer Science 2024-10-18 Salvatore Giorgi , Tingting Liu , Ankit Aich , Kelsey Isman , Garrick Sherman , Zachary Fried , João Sedoc , Lyle H. Ungar , Brenda Curtis

Large language models (LLMs) are increasingly used both to make decisions in domains such as health, education and law, and to simulate human behavior. Yet how closely LLMs mirror actual human decision-making remains poorly understood. This…

Artificial Intelligence · Computer Science 2025-11-26 Andrea Cera Palatsi , Samuel Martin-Gutierrez , Ana S. Cardenal , Max Pellert

Human communication is motivated: people speak, write, and create content with a particular communicative intent in mind. As a result, information that large language models (LLMs) and AI agents process is inherently framed by humans'…

Computation and Language · Computer Science 2026-02-03 Addison J. Wu , Ryan Liu , Kerem Oktar , Theodore R. Sumers , Thomas L. Griffiths