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Many existing privacy-enhanced speech emotion recognition (SER) frameworks focus on perturbing the original speech data through adversarial training within a centralized machine learning setup. However, this privacy protection scheme can…

Cryptography and Security · Computer Science 2023-04-18 Tiantian Feng , Raghuveer Peri , Shrikanth Narayanan

Collaborative-learning-based recommender systems, such as those employing Federated Learning (FL) and Gossip Learning (GL), allow users to train models while keeping their history of liked items on their devices. While these methods were…

Information Retrieval · Computer Science 2025-04-16 Yacine Belal , Sonia Ben Mokhtar , Mohamed Maouche , Anthony Simonet-Boulogne

In this paper, we are interested in what we term the federated private bandits framework, that combines differential privacy with multi-agent bandit learning. We explore how differential privacy based Upper Confidence Bound (UCB) methods…

Machine Learning · Computer Science 2020-05-19 Tan Li , Linqi Song , Christina Fragouli

Federated recommendation (FR) is a promising paradigm to protect user privacy in recommender systems. Distinct from general federated scenarios, FR inherently needs to preserve client-specific parameters, i.e., user embeddings, for privacy…

Cryptography and Security · Computer Science 2025-06-12 Jundong Chen , Honglei Zhang , Haoxuan Li , Chunxu Zhang , Zhiwei Li , Yidong Li

Integrating Foundation Models (FMs) into recommendation systems is an emerging and promising research direction. However, centralized paradigms face growing pressure from privacy concerns and strict regulatory requirements. Federated…

Machine Learning · Computer Science 2026-05-08 Zhiwei Li , Guodong Long , Chunxu Zhang , Honglei Zhang , Jing Jiang , Chengqi Zhang

Building recommendation systems via federated learning (FL) is a new emerging challenge for advancing next-generation Internet service and privacy protection. Existing approaches train shared item embedding by FL while keeping the user…

Machine Learning · Computer Science 2024-02-09 Zhiwei Li , Guodong Long , Tianyi Zhou

Machine learning models used for distributed architectures consisting of servers and clients require large amounts of data to achieve high accuracy. Data obtained from clients are collected on a central server for model training. However,…

Cryptography and Security · Computer Science 2025-09-18 Ozer Ozturk , Busra Buyuktanir , Gozde Karatas Baydogmus , Kazim Yildiz

The increasing interest in user privacy is leading to new privacy preserving machine learning paradigms. In the Federated Learning paradigm, a master machine learning model is distributed to user clients, the clients use their locally…

Information Retrieval · Computer Science 2019-01-30 Muhammad Ammad-ud-din , Elena Ivannikova , Suleiman A. Khan , Were Oyomno , Qiang Fu , Kuan Eeik Tan , Adrian Flanagan

To make room for privacy and efficiency, the deployment of many recommender systems is experiencing a shift from central servers to personal devices, where the federated recommender systems (FedRecs) and decentralized collaborative…

Cryptography and Security · Computer Science 2024-04-02 Ruiqi Zheng , Liang Qu , Tong Chen , Kai Zheng , Yuhui Shi , Hongzhi Yin

Federated Learning (FL) is gaining prominence in machine learning as privacy concerns grow. This paradigm allows each client (e.g., an individual online store) to train a recommendation model locally while sharing only model updates,…

Machine Learning · Computer Science 2025-10-09 Jongwon Park , Minku Kang , Wooseok Sim , Soyoung Lee , Hogun Park

Recommendation systems typically require centralized user data, limiting user control and raising privacy concerns. Federated learning offers an alternative by keeping data on-device, but its impact on real user behavior remains largely…

Information Retrieval · Computer Science 2026-05-14 Manel Slokom , Alejandro Bellogin

Recommender systems are commonly trained on centrally collected user interaction data like views or clicks. This practice however raises serious privacy concerns regarding the recommender's collection and handling of potentially sensitive…

Machine Learning · Computer Science 2021-07-29 Lorenzo Minto , Moritz Haller , Hamed Haddadi , Benjamin Livshits

Federated recommendation facilitates collaborative model training across distributed clients while keeping sensitive user interaction data local. Conventional approaches typically rely on synchronizing high-dimensional item representations…

Information Retrieval · Computer Science 2026-02-26 Yuchun Tu , Zhiwei Li , Bingli Sun , Yixuan Li , Xiao Song

Federated Learning (FL) enables collaborative model training without sharing raw data but suffers from limited scalability, high communication costs, and privacy risks due to its centralized architecture. This paper proposes FedSelect-ME, a…

Cryptography and Security · Computer Science 2025-11-05 Hanie Vatani , Reza Ebrahimi Atani

Privacy-preserving recommendations are recently gaining momentum, since the decentralized user data is increasingly harder to collect, by recommendation service providers, due to the serious concerns over user privacy and data security.…

Information Retrieval · Computer Science 2020-08-26 Mingkai Huang , Hao Li , Bing Bai , Chang Wang , Kun Bai , Fei Wang

Federated learning (FL) provides a variety of privacy advantages by allowing clients to collaboratively train a model without sharing their private data. However, recent studies have shown that private information can still be leaked…

Machine Learning · Computer Science 2023-04-12 Yue Cui , Syed Irfan Ali Meerza , Zhuohang Li , Luyang Liu , Jiaxin Zhang , Jian Liu

Recommender systems rely on large datasets of historical data and entail serious privacy risks. A server offering Recommendation as a Service to a client might leak more information than necessary regarding its recommendation model and…

Cryptography and Security · Computer Science 2018-05-15 Jun Wang , Afonso Arriaga , Qiang Tang , Peter Y. A. Ryan

Latent factor models for recommender systems represent users and items as low dimensional vectors. Privacy risks of such systems have previously been studied mostly in the context of recovery of personal information in the form of usage…

Information Retrieval · Computer Science 2018-12-19 Yehezkel S. Resheff , Yanai Elazar , Moni Shahar , Oren Sar Shalom

Federated learning is a decentralized machine learning approach where clients train models locally and share model updates to develop a global model. This enables low-resource devices to collaboratively build a high-quality model without…

Cryptography and Security · Computer Science 2024-12-10 Li Bai , Haibo Hu , Qingqing Ye , Haoyang Li , Leixia Wang , Jianliang Xu

Federated recommender system (FedRec) has emerged as a solution to protect user data through collaborative training techniques. A typical FedRec involves transmitting the full model and entire weight updates between edge devices and the…

Cryptography and Security · Computer Science 2025-06-10 Peihua Mai , Youlong Ding , Ziyan Lyu , Minxin Du , Yan Pang