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Recent advancements in large reasoning models (LRMs) have significantly enhanced language models' capabilities in complex problem-solving by emulating human-like deliberative thinking. However, these models often exhibit overthinking (i.e.,…

人工智能 · 计算机科学 2025-06-19 Weixiang Zhao , Jiahe Guo , Yang Deng , Xingyu Sui , Yulin Hu , Yanyan Zhao , Wanxiang Che , Bing Qin , Tat-Seng Chua , Ting Liu

This study investigates the concept of the `right to be forgotten' within the context of large language models (LLMs). We explore machine unlearning as a pivotal solution, with a focus on pre-trained models--a notably under-researched area.…

计算与语言 · 计算机科学 2024-05-31 Jin Yao , Eli Chien , Minxin Du , Xinyao Niu , Tianhao Wang , Zezhou Cheng , Xiang Yue

Large Language Models (LLMs) have demonstrated remarkable capabilities, yet their deployment is frequently undermined by undesirable behaviors such as generating harmful content, factual inaccuracies, and societal biases. Diagnosing the…

计算与语言 · 计算机科学 2025-10-06 Zhe Li , Wei Zhao , Yige Li , Jun Sun

Large Language Models (LLMs) inevitably acquire harmful information during training on massive datasets. LLM unlearning aims to eliminate the influence of such harmful information while maintaining the model's overall performance. Existing…

计算与语言 · 计算机科学 2025-03-07 Wenyu Wang , Mengqi Zhang , Xiaotian Ye , Zhaochun Ren , Zhumin Chen , Pengjie Ren

Large language models (LLMs) acquire a large amount of knowledge through pre-training on vast and diverse corpora. While this endows LLMs with strong capabilities in generation and reasoning, it amplifies risks associated with sensitive,…

密码学与安全 · 计算机科学 2026-02-25 Ce Fang , Zhikun Zhang , Min Chen , Qing Liu , Lu Zhou , Zhe Liu , Yunjun Gao

We explore machine unlearning (MU) in the domain of large language models (LLMs), referred to as LLM unlearning. This initiative aims to eliminate undesirable data influence (e.g., sensitive or illegal information) and the associated model…

Large language models (LLMs) inherently absorb harmful knowledge, misinformation, and personal data during pretraining on large-scale web corpora, with no native mechanism for selective removal. While machine unlearning offers a principled…

人工智能 · 计算机科学 2026-04-15 Jagadeesh Rachapudi , Pranav Singh , Ritali Vatsi , Praful Hambarde , Amit Shukla

As large language models (LLMs) are applied across diverse domains, the ability to selectively unlearn specific information is becoming increasingly essential. For instance, LLMs are expected to selectively provide confidential information…

计算与语言 · 计算机科学 2025-06-04 Shota Takashiro , Takeshi Kojima , Andrew Gambardella , Qi Cao , Yusuke Iwasawa , Yutaka Matsuo

The significant advancements in large language models (LLMs) give rise to a promising research direction, i.e., leveraging LLMs as recommenders (LLMRec). The efficacy of LLMRec arises from the open-world knowledge and reasoning capabilities…

信息检索 · 计算机科学 2024-07-02 Hangyu Wang , Jianghao Lin , Bo Chen , Yang Yang , Ruiming Tang , Weinan Zhang , Yong Yu

Large language models (LLMs) exhibit remarkable generative capabilities but raise ethical and security concerns by memorizing sensitive data, reinforcing biases, and producing harmful content. These risks have spurred interest in LLM…

机器学习 · 计算机科学 2025-10-13 Changsheng Wang , Yihua Zhang , Dennis Wei , Jinghan Jia , Pin-Yu Chen , Sijia Liu

Understanding what defines a good representation in large language models (LLMs) is fundamental to both theoretical understanding and practical applications. In this paper, we investigate the quality of intermediate representations in…

机器学习 · 计算机科学 2024-12-13 Oscar Skean , Md Rifat Arefin , Yann LeCun , Ravid Shwartz-Ziv

Large language model (LLM)-based agents have recently gained considerable attention due to the powerful reasoning capabilities of LLMs. Existing research predominantly focuses on enhancing the task performance of these agents in diverse…

多智能体系统 · 计算机科学 2026-04-02 Dayong Ye , Tainqing Zhu , Congcong Zhu , Feng He , Qi He , Shang Wang , Bo Liu , Wanlei Zhou

Machine Unlearning (MU) aims to selectively erase the influence of specific data points from pretrained models. However, most existing MU methods rely on the retain set to preserve model utility, which is often impractical due to privacy…

机器学习 · 计算机科学 2026-04-15 Xindi Fan , Jing Wu , Mingyi Zhou , Pengwei Liang , Mehrtash Harandi , Dinh Phung

Machine unlearning aims to erase requested data from trained models without full retraining. For Reasoning Multimodal Large Language Models (RMLLMs), this is uniquely challenging: intermediate chain-of-thought steps can still leak sensitive…

计算与语言 · 计算机科学 2025-12-23 Hongji Li , Junchi yao , Manjiang Yu , Priyanka Singh , Xue Li , Di Wang , Lijie Hu

Machine unlearning (MU) for large language models (LLMs), commonly referred to as LLM unlearning, seeks to remove specific undesirable data or knowledge from a trained model, while maintaining its performance on standard tasks. While…

机器学习 · 计算机科学 2026-03-03 Yiwei Chen , Soumyadeep Pal , Yimeng Zhang , Qing Qu , Sijia Liu

Large Language Models (LLMs) inevitably memorize sensitive information during training, posing significant privacy risks. Machine unlearning has emerged as a promising solution to selectively remove such information without full retraining.…

机器学习 · 计算机科学 2026-04-02 Yuze Wang , Yujia Tong , Xuan Liu , Junhao Dong

Large language models (LLMs) have achieved significant progress from pre-training on and memorizing a wide range of textual data, however, this process might suffer from privacy issues and violations of data protection regulations. As a…

计算与语言 · 计算机科学 2023-11-01 Jiaao Chen , Diyi Yang

LLM unlearning is essential for mitigating safety, copyright, and privacy concerns in pre-trained large language models (LLMs). Compared to preference alignment, it offers a more explicit way by removing undesirable knowledge characterized…

机器学习 · 计算机科学 2026-03-12 Junfeng Liao , Qizhou Wang , Shanshan Ye , Xin Yu , Ling Chen , Zhen Fang

Large language Models (LLMs) have demonstrated remarkable skills across various domains. Understanding the mechanisms behind their abilities and implementing controls over them is becoming increasingly important for developing better…

计算与语言 · 计算机科学 2025-04-01 Yongce Li , Chung-En Sun , Tsui-Wei Weng

Large Language Models (LLMs) can memorize sensitive information, raising concerns about potential misuse. LLM Unlearning, a post-hoc approach to remove this information from trained LLMs, offers a promising solution to mitigate these risks.…

计算与语言 · 计算机科学 2024-09-19 Tianle Gu , Kexin Huang , Ruilin Luo , Yuanqi Yao , Yujiu Yang , Yan Teng , Yingchun Wang