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The widespread deployment of Large Language Models (LLMs) trained on massive, uncurated corpora has raised growing concerns about the inclusion of sensitive, copyrighted, or illegal content. This has led to increasing interest in LLM…

Computation and Language · Computer Science 2025-06-10 Chenlong Zhang , Zhuoran Jin , Hongbang Yuan , Jiaheng Wei , Tong Zhou , Kang Liu , Jun Zhao , Yubo Chen

Large Language Models (LLMs) often memorize sensitive or harmful information, necessitating effective machine unlearning techniques. While existing parameter-efficient unlearning methods have shown promise, they still struggle with the…

Computation and Language · Computer Science 2026-04-21 Zeguan Xiao , Lang Mo , Yun Chen , Lei Yang , Jiehui Zhao , Lili Yang , Guanhua Chen

Enabling large language models (LLMs) to unlearn knowledge and capabilities acquired during training has proven vital for ensuring compliance with data regulations and promoting ethical practices in generative AI. Although there are growing…

While large language models (LLMs) exhibit remarkable capabilities, they increasingly face demands to unlearn memorized privacy-sensitive, copyrighted, or harmful content. Existing unlearning methods primarily focus on \emph{single-shot}…

Computation and Language · Computer Science 2026-05-08 Xiaoyu Xu , Minxin Du , Kun Fang , Yaxin Xiao , Zhicong Huang , Cheng Hong , Qingqing Ye , Haibo Hu

The imperative to eliminate undesirable data memorization underscores the significance of machine unlearning for large language models (LLMs). Recent research has introduced a series of promising unlearning methods, notably boosting the…

Machine Learning · Computer Science 2025-02-26 Qizhou Wang , Bo Han , Puning Yang , Jianing Zhu , Tongliang Liu , Masashi Sugiyama

We study the right to be forgotten (GDPR Art. 17) for large language models and frame unlearning as a reproducible systems problem. Our approach treats training as a deterministic program and logs a minimal per-microbatch record (ordered ID…

Machine Learning · Computer Science 2025-08-19 Abdullah X

Large Language Models (LLMs) trained on extensive corpora inevitably retain sensitive data, such as personal privacy information and copyrighted material. Recent advancements in knowledge unlearning involve updating LLM parameters to erase…

Computation and Language · Computer Science 2024-10-08 Bozhong Tian , Xiaozhuan Liang , Siyuan Cheng , Qingbin Liu , Mengru Wang , Dianbo Sui , Xi Chen , Huajun Chen , Ningyu Zhang

Although Large Language Models (LLMs) have demonstrated impressive capabilities across a wide range of tasks, growing concerns have emerged over the misuse of sensitive, copyrighted, or harmful data during training. To address these…

Cryptography and Security · Computer Science 2025-06-03 Jie Ren , Zhenwei Dai , Xianfeng Tang , Yue Xing , Shenglai Zeng , Hui Liu , Jingying Zeng , Qiankun Peng , Samarth Varshney , Suhang Wang , Qi He , Charu C. Aggarwal , Hui Liu

Machine unlearning has become an important area of research due to an increasing need for machine learning (ML) applications to comply with the emerging data privacy regulations. It facilitates the provision for removal of certain set or…

Machine Learning · Computer Science 2023-06-01 Vikram S Chundawat , Ayush K Tarun , Murari Mandal , Mohan Kankanhalli

Machine unlearning is essential for meeting legal obligations such as the right to be forgotten, which requires the removal of specific data from machine learning models upon request. While several approaches to unlearning have been…

Machine Learning · Computer Science 2025-05-13 Maximilian Egger , Rawad Bitar , Rüdiger Urbanke

Large language models show impressive abilities in memorizing world knowledge, which leads to concerns regarding memorization of private information, toxic or sensitive knowledge, and copyrighted content. We introduce the problem of Large…

Computation and Language · Computer Science 2025-02-18 Yu Wang , Ruihan Wu , Zexue He , Xiusi Chen , Julian McAuley

Machine unlearning aims to remove the influence of specific data from trained models while preserving general utility. Existing approximate unlearning methods often rely on performance-degradation heuristics, such as loss maximization or…

Machine Learning · Computer Science 2026-03-13 Jonas Mirlach , Sonia Laguna , Julia E. Vogt

The growing concern over training data privacy has elevated the "Right to be Forgotten" into a critical requirement, thereby raising the demand for effective Machine Unlearning. However, existing unlearning approaches commonly suffer from a…

Machine Learning · Computer Science 2026-02-20 Haoyu Wang , Zhuo Huang , Xiaolong Wang , Bo Han , Zhiwei Lin , Tongliang Liu

We study how to perform unlearning, i.e. forgetting undesirable misbehaviors, on large language models (LLMs). We show at least three scenarios of aligning LLMs with human preferences can benefit from unlearning: (1) removing harmful…

Computation and Language · Computer Science 2024-02-20 Yuanshun Yao , Xiaojun Xu , Yang Liu

A common challenge in continual learning (CL) is catastrophic forgetting, where the performance on old tasks drops after new, additional tasks are learned. In this paper, we propose a novel framework called ReCL to slow down forgetting in…

Machine Learning · Computer Science 2025-03-04 Pascal Janetzky , Tobias Schlagenhauf , Stefan Feuerriegel

While Large Language Models (LLMs) have demonstrated impressive performance in various domains and tasks, concerns about their safety are becoming increasingly severe. In particular, since models may store unsafe knowledge internally,…

Machine Learning · Computer Science 2025-08-22 Chengcan Wu , Zeming Wei , Huanran Chen , Yinpeng Dong , Meng Sun

Large language model (LLM) unlearning has become a critical mechanism for removing undesired data, knowledge, or behaviors from pre-trained models while retaining their general utility. Yet, with the rise of open-weight LLMs, we ask: can…

Machine Learning · Computer Science 2025-10-21 Bingqi Shang , Yiwei Chen , Yihua Zhang , Bingquan Shen , Sijia Liu

Machine unlearning aims to selectively remove targeted knowledge from Large Language Models (LLMs), ensuring they forget specified content while retaining essential information. Existing unlearning metrics assess whether a model correctly…

Computation and Language · Computer Science 2025-05-28 Wonje Jeung , Sangyeon Yoon , Albert No

Machine unlearning has emerged as a new paradigm to deliberately forget data samples from a given model in order to adhere to stringent regulations. However, existing machine unlearning methods have been primarily focused on classification…

Machine Learning · Computer Science 2024-02-05 Guihong Li , Hsiang Hsu , Chun-Fu Chen , Radu Marculescu

Machine unlearning techniques aim to mitigate unintended memorization in large language models (LLMs). However, existing approaches predominantly focus on the explicit removal of isolated facts, often overlooking latent inferential…