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In federated learning, federated unlearning is a technique that provides clients with a rollback mechanism that allows them to withdraw their data contribution without training from scratch. However, existing research has not considered…

Machine Learning · Computer Science 2024-12-23 Xinrui Yu , Wenbin Pei , Bing Xue , Qiang Zhang

Federated Learning is a distributed machine learning paradigm dealing with decentralized and personal datasets. Since data reside on devices like smartphones and virtual assistants, labeling is entrusted to the clients, or labels are…

Machine Learning · Computer Science 2022-02-28 Vasileios Tsouvalas , Aaqib Saeed , Tanir Ozcelebi

Positive Unlabeled (PU) learning is widely used in many applications, where a binary classifier is trained on the datasets consisting of only positive and unlabeled samples. In this paper, we improve PU learning over state-of-the-art from…

Machine Learning · Computer Science 2020-04-22 Liwei Jiang , Dan Li , Qisheng Wang , Shuai Wang , Songtao Wang

We are interested in developing a unified machine learning model over many mobile devices for practical learning tasks, where each device only has very few training data. This is a commonly encountered situation in mobile computing…

Machine Learning · Computer Science 2021-04-02 Chenyou Fan , Jianwei Huang

Federated learning provides a privacy-preserving manner to collaboratively train models on data distributed over multiple local clients via the coordination of a global server. In this paper, we focus on label distribution skew in federated…

Machine Learning · Computer Science 2024-09-23 Jianghu Lu , Shikun Li , Kexin Bao , Pengju Wang , Zhenxing Qian , Shiming Ge

In this study, we propose a method for identifying potential customers in targeted marketing by applying learning from positive and unlabeled data (PU learning). We consider a scenario in which a company sells a product and can observe only…

Machine Learning · Computer Science 2025-06-10 Masahiro Kato , Yuki Ikeda , Kentaro Baba , Takashi Imai , Ryo Inokuchi

Personalized federated learning has emerged as a popular approach to training on devices holding statistically heterogeneous data, known as clients. However, most existing approaches require a client to have labeled data for training or…

Machine Learning · Computer Science 2025-05-22 Hossein Zakerinia , Jonathan Scott , Christoph H. Lampert

Federated Learning (FL) enables decentralized model training across multiple parties while preserving privacy. However, most FL systems assume clients hold only unimodal data, limiting their real-world applicability, as institutions often…

Machine Learning · Computer Science 2025-04-17 Yu Zhang , Qingfeng Du , Jiaqi Lv

Federated learning is a learning paradigm to enable collaborative learning across different parties without revealing raw data. Notably, vertical federated learning (VFL), where parties share the same set of samples but only hold partial…

Machine Learning · Computer Science 2023-03-24 Zhaomin Wu , Qinbin Li , Bingsheng He

Federated learning is a new learning paradigm for extracting knowledge from distributed data. Due to its favorable properties in preserving privacy and saving communication costs, it has been extensively studied and widely applied to…

Machine Learning · Computer Science 2023-06-06 Hongchang Gao , My T. Thai , Jie Wu

Federated Learning (FL) enables collaborative model training across distributed clients while preserving user privacy. Recently, Federated Unlearning (FU) has emerged to address the "right to be forgotten" and to remove the influence of…

Machine Learning · Computer Science 2026-05-26 Ruinan Jin , Minghui Chen , Qiong Zhang , Xiaoxiao Li

Many existing federated learning (FL) algorithms are designed for supervised learning tasks, assuming that the local data owned by the clients are well labeled. However, in many practical situations, it could be difficult and expensive to…

Machine Learning · Computer Science 2021-11-02 Zhiguo Wang , Xintong Wang , Ruoyu Sun , Tsung-Hui Chang

We study a new form of federated learning where the clients train personalized local models and make predictions jointly with the server-side shared model. Using this new federated learning framework, the complexity of the central shared…

Machine Learning · Computer Science 2020-03-31 Alekh Agarwal , John Langford , Chen-Yu Wei

Federated learning (FL) systems are susceptible to attacks from malicious actors who might attempt to corrupt the training model through various poisoning attacks. FL also poses new challenges in addressing group bias, such as ensuring fair…

Machine Learning · Computer Science 2023-06-08 Viktor Valadi , Xinchi Qiu , Pedro Porto Buarque de Gusmão , Nicholas D. Lane , Mina Alibeigi

In binary classification, Learning from Positive and Unlabeled data (LePU) is semi-supervised learning but with labeled elements from only one class. Most of the research on LePU relies on some form of independence between the selection…

Machine Learning · Computer Science 2020-03-03 Naji Shajarisales , Peter Spirtes , Kun Zhang

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

We consider learning a multi-class classification model in the federated setting, where each user has access to the positive data associated with only a single class. As a result, during each federated learning round, the users need to…

Machine Learning · Computer Science 2020-04-23 Felix X. Yu , Ankit Singh Rawat , Aditya Krishna Menon , Sanjiv Kumar

Federated learning enables multiple actors to collaboratively train models without sharing private data. Existing algorithms are successful and well-justified in this task when the intended target domain, where the trained model will be…

Machine Learning · Computer Science 2025-08-27 Edvin Listo Zec , Adam Breitholtz , Fredrik D. Johansson

When dealing with binary classification of data with only one labeled class data scientists employ two main approaches, namely One-Class (OC) classification and Positive Unlabeled (PU) learning. The former only learns from labeled positive…

Machine Learning · Computer Science 2022-03-15 Farid Bagirov , Dmitry Ivanov , Aleksei Shpilman

Federated learning (FL) has emerged as an effective technique to co-training machine learning models without actually sharing data and leaking privacy. However, most existing FL methods focus on the supervised setting and ignore the…

Machine Learning · Computer Science 2021-07-06 Zewei Long , Liwei Che , Yaqing Wang , Muchao Ye , Junyu Luo , Jinze Wu , Houping Xiao , Fenglong Ma