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Related papers: SIFU: Sequential Informed Federated Unlearning for…

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Machine Unlearning (MU) aims to remove the information of specific training data from a trained model, ensuring compliance with privacy regulations and user requests. While one line of existing MU methods relies on linear parameter updates…

Artificial Intelligence · Computer Science 2026-05-13 Yingdan Shi , Ren Wang

Federated Learning (FL) has shown great potential as a privacy-preserving solution to learning from decentralized data that are only accessible to end devices (i.e., clients). In many scenarios, however, a large proportion of the clients…

Machine Learning · Computer Science 2022-01-31 Wentai Wu , Ligang He , Weiwei Lin , Carsten Maple

Federated Learning is a promising paradigm for privacy-preserving collaborative model training. In practice, it is essential not only to continuously train the model to acquire new knowledge but also to guarantee old knowledge the right to…

Machine Learning · Computer Science 2025-03-03 Zhengyi Zhong , Weidong Bao , Ji Wang , Shuai Zhang , Jingxuan Zhou , Lingjuan Lyu , Wei Yang Bryan Lim

Asynchronous Federated Learning with Buffered Aggregation (FedBuff) is a state-of-the-art algorithm known for its efficiency and high scalability. However, it has a high communication cost, which has not been examined with quantized…

Machine Learning · Computer Science 2023-08-02 Tomas Ortega , Hamid Jafarkhani

Recently, the practical needs of ``the right to be forgotten'' in federated learning gave birth to a paradigm known as federated unlearning, which enables the server to forget personal data upon the client's removal request. Existing…

Cryptography and Security · Computer Science 2025-01-22 Jian Chen , Zehui Lin , Wanyu Lin , Wenlong Shi , Xiaoyan Yin , Di Wang

Federated learning (FL), introduced in 2017, facilitates collaborative learning between non-trusting parties with no need for the parties to explicitly share their data among themselves. This allows training models on user data while…

Machine Learning · Computer Science 2025-04-09 Hyejun Jeong , Shiqing Ma , Amir Houmansadr

Federated learning (FL) has attracted increasing attention as a promising approach to driving a vast number of end devices with artificial intelligence. However, it is very challenging to guarantee the efficiency of FL considering the…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-04-26 Wentai Wu , Ligang He , Weiwei Lin , Rui Mao , Carsten Maple , Stephen Jarvis

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

With the introduction of regulations related to the ``right to be forgotten", federated learning (FL) is facing new privacy compliance challenges. To address these challenges, researchers have proposed federated unlearning (FU). However,…

Cryptography and Security · Computer Science 2025-04-09 Lei Zhou , Youwen Zhu

Federated learning (FL) enables collaboratively training deep learning models on decentralized data. However, there are three types of heterogeneities in FL setting bringing about distinctive challenges to the canonical federated learning…

Machine Learning · Computer Science 2020-09-18 Tao Shen , Jie Zhang , Xinkang Jia , Fengda Zhang , Gang Huang , Pan Zhou , Kun Kuang , Fei Wu , Chao Wu

In this work, we consider the problem of designing secure and efficient federated learning (FL) frameworks. Existing solutions either involve a trusted aggregator or require heavyweight cryptographic primitives, which degrades performance…

Cryptography and Security · Computer Science 2022-01-31 Jieren Deng , Chenghong Wang , Xianrui Meng , Yijue Wang , Ji Li , Sheng Lin , Shuo Han , Fei Miao , Sanguthevar Rajasekaran , Caiwen Ding

Large language models deployed in sensitive applications increasingly require the ability to unlearn specific knowledge, such as user requests, copyrighted materials, or outdated information, without retraining from scratch to ensure…

Machine Learning · Computer Science 2026-05-05 Sadia Asif , Mohammad Mohammadi Amiri

We study federated unlearning, a novel problem to eliminate the impact of specific clients or data points on the global model learned via federated learning (FL). This problem is driven by the right to be forgotten and the privacy…

Machine Learning · Computer Science 2024-01-23 Youming Tao , Cheng-Long Wang , Miao Pan , Dongxiao Yu , Xiuzhen Cheng , Di Wang

The advent of Federated Learning (FL) highlights the practical necessity for the right to be forgotten for all clients, allowing them to request data deletion from the machine learning models service provider. This necessity has spurred a…

Machine Learning · Computer Science 2025-01-09 Hanlin Gu , Win Kent Ong , Chee Seng Chan , Lixin Fan

Federated learning (FL) enables collaborative model training without sharing raw data, offering a promising path toward privacy preserving artificial intelligence. However, FL models may still memorize sensitive information from…

Machine Learning · Computer Science 2026-04-15 Parthaw Goswami , Md Khairul Islam , Ashfak Yeafi

Federated Learning (FL) is a decentralized machine learning framework that enables collaborative model training while respecting data privacy. In various applications, non-uniform availability or participation of users is unavoidable due to…

Machine Learning · Computer Science 2023-09-26 Periklis Theodoropoulos , Konstantinos E. Nikolakakis , Dionysis Kalogerias

Federated Unlearning (FU) enables the removal of specific clients' data influence from trained models. However, in non-IID settings, removing clients creates critical side effects: remaining clients with similar data distributions suffer…

Computer Science and Game Theory · Computer Science 2025-07-29 Jiaqi Shao , Tao Lin , Xiaojin Zhang , Qiang Yang , Bing Luo

Federated learning (FL) is a collaborative learning paradigm where participants jointly train a powerful model without sharing their private data. One desirable property for FL is the implementation of the right to be forgotten (RTBF),…

Cryptography and Security · Computer Science 2022-05-26 Xiangshan Gao , Xingjun Ma , Jingyi Wang , Youcheng Sun , Bo Li , Shouling Ji , Peng Cheng , Jiming Chen

Machine unlearning (MU) aims to efficiently remove sensitive or harmful memory from a pre-trained model. The key challenge is to balance the potential tradeoff between unlearning efficacy and utility preservation, which involves forgetting…

Machine Learning · Computer Science 2026-02-04 Shiji Zhou , Tianbai Yu , Zhi Zhang , Heng Chang , Xiao Zhou , Dong Wu , Han Zhao

Federated learning (FL) is vulnerable to poisoning attacks, where malicious clients upload manipulated updates to degrade the performance of the global model. Although detection methods can identify and remove malicious clients, the model…

Machine Learning · Computer Science 2026-05-05 Wenwei Zhao , Xiaowen Li , Yao Liu , Zhuo Lu