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Users' interaction or preference data used in recommender systems carry the risk of unintentionally revealing users' private attributes (e.g., gender or race). This risk becomes particularly concerning when the training data contains user…

The rapid growth of Internet of Things (IoT) devices has introduced significant challenges to privacy, particularly as network traffic analysis techniques evolve. While encryption protects data content, traffic attributes such as packet…

密码学与安全 · 计算机科学 2025-01-28 Daniel Adu Worae , Spyridon Mastorakis

This paper proposes a new recommendation system preserving both privacy and utility. It relies on the local differential privacy (LDP) for the browsing user to transmit his noisy preference profile, as perturbed Bloom filters, to the…

密码学与安全 · 计算机科学 2021-09-24 Seryne Rahali , Maryline Laurent , Souha Masmoudi , Charles Roux , Brice Mazeau

A growing framework of legal and ethical requirements limit scientific and commercial evalua-tion of personal data. Typically, pseudonymization, encryption, or methods of distributed com-puting try to protect individual privacy. However,…

密码学与安全 · 计算机科学 2018-11-21 Nikolaus von Bomhard , Bernd Ahlborn , Catherine Mason , Ulrich Mansmann

Federated Collaborative Filtering (FedCF) is an emerging field focused on developing a new recommendation framework with preserving privacy in a federated setting. Existing FedCF methods typically combine distributed Collaborative Filtering…

信息检索 · 计算机科学 2024-12-11 Zhiwei Li , Guodong Long , Tianyi Zhou , Jing Jiang , Chengqi Zhang

News recommendation is critical for personalized news access. Most existing news recommendation methods rely on centralized storage of users' historical news click behavior data, which may lead to privacy concerns and hazards. Federated…

信息检索 · 计算机科学 2023-05-31 Jingwei Yi , Fangzhao Wu , Chuhan Wu , Ruixuan Liu , Guangzhong Sun , Xing Xie

Privacy issues of recommender systems have become a hot topic for the society as such systems are appearing in every corner of our life. In contrast to the fact that many secure multi-party computation protocols have been proposed to…

密码学与安全 · 计算机科学 2017-03-13 Jun Wang , Qiang Tang

In this paper, we propose a cooperative approach to improve the security of both primary and secondary systems in cognitive radio multicast communications. During their access to the frequency spectrum licensed to the primary users, the…

We propose and study the cooperative MIMO architecture to enable and to improve the secrecy transmissions between clusters of mobile devices in the presence of an eavesdropper with certain location constraint. The cooperative MIMO system in…

信息论 · 计算机科学 2019-01-08 Zhong Zheng , Zygmunt Haas , Mario Kieburg

The foreseen growing role of outsourced machine learning services is raising concerns about the privacy of user data. Several technical solutions are being proposed to address the issue. Hardware security modules in cloud data centres…

密码学与安全 · 计算机科学 2019-10-07 Marc Joye , Fabien A. P. Petitcolas

In this paper, we consider a scenario where a source node wishes to broadcast two confidential messages for two respective receivers, while a wire-tapper also receives the transmitted signal. This model is motivated by wireless…

信息论 · 计算机科学 2008-07-30 Ghadamali Bagherikaram , Abolfazl S. Motahari , Amir K. Khandani

The rapid expansion of Internet of Things (IoT) devices in smart homes has significantly improved the quality of life, offering enhanced convenience, automation, and energy efficiency. However, this proliferation of connected devices raises…

密码学与安全 · 计算机科学 2023-08-08 Nazar Waheed , Fazlullah Khan , Spyridon Mastorakis , Mian Ahmad Jan , Abeer Z. Alalmaie , Priyadarsi Nanda

One key metric for physical layer security is the secrecy capacity. This is the maximum rate that a system can transmit with perfect secrecy. For a Multiple Input Multiple Output (MIMO) system (a newer technology for 5G, 6G and beyond) the…

信息论 · 计算机科学 2022-10-03 Jennifer Chakravarty , Oliver Johnson , Robert Piechocki

In this paper, we propose a two-stage ranking approach for recommending linear TV programs. The proposed approach first leverages user viewing patterns regarding time and TV channels to identify potential candidates for recommendation and…

信息检索 · 计算机科学 2020-09-21 Sheng-Chieh Lin , Ting-Wei Lin , Jing-Kai Lou , Ming-Feng Tsai , Chuan-Ju Wang

With the rapid development of short video platforms, recommendation systems have become key technologies for improving user experience and enhancing platform engagement. However, while short video recommendation systems leverage multimodal…

信息检索 · 计算机科学 2025-04-15 Haowei Yang , Lei Fu , Qingyi Lu , Yue Fan , Tianle Zhang , Ruohan Wang

Recommender systems play a pivotal role across practical scenarios, showcasing remarkable capabilities in user preference modeling. However, the centralized learning paradigm predominantly used raises serious privacy concerns. The federated…

Collecting and training over sensitive personal data raise severe privacy concerns in personalized recommendation systems, and federated learning can potentially alleviate the problem by training models over decentralized user data.However,…

信息检索 · 计算机科学 2022-12-15 Ruixuan Liu , Yanlin Wang , Yang Cao , Lingjuan Lyu , Weike Pan , Yun Chen , Hong Chen

The initial interaction of a user with a recommender system is problematic because, in such a so-called cold start situation, the recommender system has very little information about the user, if any. Moreover, in collaborative filtering,…

信息检索 · 计算机科学 2023-10-17 Noa Tuval , Alain Hertz , Tsvi Kuflik

Recommenders are central in many applications today. The most effective recommendation schemes, such as those based on collaborative filtering (CF), exploit similarities between user profiles to make recommendations, but potentially expose…

分布式、并行与集群计算 · 计算机科学 2022-06-02 Akash Dhasade , Nevena Dresevic , Anne-Marie Kermarrec , Rafael Pires

Existing work on privacy-preserving machine learning with Secure Multiparty Computation (MPC) is almost exclusively focused on model training and on inference with trained models, thereby overlooking the important data pre-processing stage.…

密码学与安全 · 计算机科学 2021-02-09 Xiling Li , Rafael Dowsley , Martine De Cock