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Related papers: OFMU: Optimization-Driven Framework for Machine Un…

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Machine unlearning (MU) aims to remove the influence of specific training samples from a well-trained model, a task of growing importance due to the ``right to be forgotten.'' The unlearned model should approach the retrained model, where…

Machine Learning · Computer Science 2026-03-10 Xinwen Cheng , Zhehao Huang , Wenxin Zhou , Zhengbao He , Ruikai Yang , Yingwen Wu , Xiaolin Huang

Machine unlearning (MU) aims to remove the influence of specific data from a trained model. However, approximate unlearning methods, often formulated as a single-objective optimization (SOO) problem, face a critical trade-off between…

Machine Learning · Computer Science 2025-10-23 Youngsik Hwang , Dong-Young Lim

Large Language Models (LLMs) increasingly leverage Federated Learning (FL) to utilize private, task-specific datasets for fine-tuning while preserving data privacy. However, while federated LLM frameworks effectively enable collaborative…

Machine Learning · Computer Science 2025-11-11 Fuyao Zhang , Xinyu Yan , Tiantong Wu , Wenjie Li , Tianxiang Chen , Yang Cao , Ran Yan , Longtao Huang , Wei Yang Bryan Lim , Qiang Yang

The growing use of large language models in sensitive domains has exposed a critical weakness: the inability to ensure that private information can be permanently forgotten. Yet these systems still lack reliable mechanisms to guarantee that…

Machine Learning · Computer Science 2025-11-14 James Jin Kang , Dang Bui , Thanh Pham , Huo-Chong Ling

Unlearning in large language models (LLMs) involves precisely removing specific information from a pre-trained model. This is crucial to ensure safety of LLMs by deleting private data or harmful knowledge acquired during pre-training.…

Machine Learning · Computer Science 2025-09-04 Naman Deep Singh , Maximilian Müller , Francesco Croce , Matthias Hein

Unlearning the data observed during the training of a machine learning (ML) model is an important task that can play a pivotal role in fortifying the privacy and security of ML-based applications. This paper raises the following questions:…

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

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

Machine unlearning refers to the process of mitigating the influence of specific training data on machine learning models based on removal requests from data owners. However, one important area that has been largely overlooked in the…

Cryptography and Security · Computer Science 2025-07-17 Dayong Ye , Tianqing Zhu , Congcong Zhu , Derui Wang , Kun Gao , Zewei Shi , Sheng Shen , Wanlei Zhou , Minhui Xue

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 introduce a novel machine unlearning framework founded upon the established principles of the min-max optimization paradigm. We capitalize on the capabilities of strong Membership Inference Attacks (MIA) to facilitate the unlearning of…

Machine Learning · Computer Science 2024-02-14 Rohan Sharma , Shijie Zhou , Kaiyi Ji , Changyou Chen

Neural networks unintentionally memorize training data, creating privacy risks in federated learning (FL) systems, such as inference and reconstruction attacks on sensitive data. To mitigate these risks and to comply with privacy…

Machine Learning · Computer Science 2025-09-22 Van-Tuan Tran , Hong-Hanh Nguyen-Le , Quoc-Viet Pham

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 is a process to remove specific data points from a trained model while maintaining the performance on the retain data, addressing privacy or legal requirements. Despite its importance, existing unlearning evaluations tend…

Machine Learning · Computer Science 2026-01-30 Yongwoo Kim , Sungmin Cha , Donghyun Kim

Despite advances in Preference Alignment (PA) for Large Language Models (LLMs), mainstream methods like Reinforcement Learning with Human Feedback (RLHF) face notable challenges. These approaches require high-quality datasets of positive…

Machine Learning · Computer Science 2025-04-10 Xiaohua Feng , Yuyuan Li , Huwei Ji , Jiaming Zhang , Li Zhang , Tianyu Du , Chaochao Chen

The growing legal and ethical scrutiny of large language models (LLMs) necessitates effective machine unlearning, particularly for sensitive or unauthorized data. Existing empirical methods often yield incomplete forgetting or unintended…

Machine Learning · Computer Science 2025-08-11 Ameya Anjarlekar , Sandeep Pombra

Multimodal large language models (MLLMs) have attracted increasing attention in the past few years, but they may still generate descriptions that include objects not present in the corresponding images, a phenomenon known as object…

Computation and Language · Computer Science 2024-09-24 Shangyu Xing , Fei Zhao , Zhen Wu , Tuo An , Weihao Chen , Chunhui Li , Jianbing Zhang , Xinyu Dai

With the surge and widespread application of image generation models, data privacy and content safety have become major concerns and attracted great attention from users, service providers, and policymakers. Machine unlearning (MU) is…

Artificial Intelligence · Computer Science 2025-06-09 Renyang Liu , Wenjie Feng , Tianwei Zhang , Wei Zhou , Xueqi Cheng , See-Kiong Ng

In response to recent data regulation requirements, machine unlearning (MU) has emerged as a critical process to remove the influence of specific examples from a given model. Although exact unlearning can be achieved through complete model…

Machine Learning · Computer Science 2024-01-30 Jinghan Jia , Jiancheng Liu , Parikshit Ram , Yuguang Yao , Gaowen Liu , Yang Liu , Pranay Sharma , Sijia Liu

While numerous machine unlearning (MU) methods have recently been developed with promising results in erasing the influence of forgotten data, classes, or concepts, they are also highly vulnerable-for example, simple fine-tuning can…

Machine Learning · Computer Science 2026-04-10 Yichen Gao , Altay Unal , Akshay Rangamani , Zhihui Zhu

Large Language Models (LLMs) are foundational to AI advancements, facilitating applications like predictive text generation. Nonetheless, they pose risks by potentially memorizing and disseminating sensitive, biased, or copyrighted…

Artificial Intelligence · Computer Science 2024-03-26 Youyang Qu , Ming Ding , Nan Sun , Kanchana Thilakarathna , Tianqing Zhu , Dusit Niyato