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Tensor factorizations (TF) are powerful tools for the efficient representation and analysis of multidimensional data. However, classic TF methods based on maximum likelihood estimation underperform when applied to zero-inflated count data,…

机器学习 · 统计学 2023-08-17 Daniel Chafamo , Vignesh Shanmugam , Neriman Tokcan

Text mining and information retrieval techniques have been developed to assist us with analyzing, organizing and retrieving documents with the help of computers. In many cases, it is desirable that the authors of such documents remain…

密码学与安全 · 计算机科学 2018-05-03 Benjamin Weggenmann , Florian Kerschbaum

Deep learning-based face recognition (FR) technology exacerbates privacy concerns in photo sharing. In response, the research community developed a suite of anti-FR methods to block identity extraction by unauthorized FR systems. Benefiting…

密码学与安全 · 计算机科学 2025-09-16 Tao Wang , Yushu Zhang , Xiangli Xiao , Kun Xu , Lin Yuan , Wenying Wen , Yuming Fang

Privacy poses a significant obstacle to the progress of learning analytics (LA), presenting challenges like inadequate anonymization and data misuse that current solutions struggle to address. Synthetic data emerges as a potential remedy,…

密码学与安全 · 计算机科学 2024-01-17 Qinyi Liu , Mohammad Khalil , Ronas Shakya , Jelena Jovanovic

Reducing communication overhead in federated learning (FL) is challenging but crucial for large-scale distributed privacy-preserving machine learning. While methods utilizing sparsification or others can largely lower the communication…

机器学习 · 计算机科学 2023-03-21 Yuhao Zhou , Mingjia Shi , Yuanxi Li , Qing Ye , Yanan Sun , Jiancheng Lv

Our ability to synthesize sensory data that preserves specific statistical properties of the real data has had tremendous implications on data privacy and big data analytics. The synthetic data can be used as a substitute for selective real…

机器学习 · 计算机科学 2017-02-01 Moustafa Alzantot , Supriyo Chakraborty , Mani B. Srivastava

Conventional matrix factorization relies on centralized collection of users' data for recommendation, which might introduce an increased risk of privacy leakage especially when the recommender is untrusted. Existing differentially private…

机器学习 · 计算机科学 2023-09-19 Wentao Hu , Hui Fang

In distributed computing environments, collaborative machine learning enables multiple clients to train a global model collaboratively. To preserve privacy in such settings, a common technique is to utilize frequent updates and…

机器学习 · 计算机科学 2025-01-24 Chia-Yuan Wu , Frank E. Curtis , Daniel P. Robinson

Federated Learning (FL) is a machine learning framework that enables multiple organizations to train a model without sharing their data with a central server. However, it experiences significant performance degradation if the data is…

机器学习 · 计算机科学 2023-07-19 Ahmed Elhussein , Gamze Gursoy

Federated learning (FL) has been widely regarded as a promising paradigm for privacy preservation of raw data in machine learning. Although, the data privacy in FL is locally protected to some extent, it is still a desideratum to enhance…

最优化与控制 · 数学 2025-09-03 Yifan Wang , Xianghui Cao , Shi Jin , Mo-Yuen Chow

This paper explores the strategic use of modern synthetic data generation and advanced data perturbation techniques to enhance security, maintain analytical utility, and improve operational efficiency when managing large datasets, with a…

密码学与安全 · 计算机科学 2025-04-29 Anantha Sharma , Swetha Devabhaktuni , Eklove Mohan

Federated learning (FL) has emerged as a privacy-preserving paradigm that trains neural networks on edge devices without collecting data at a central server. However, FL encounters an inherent challenge in dealing with non-independent and…

机器学习 · 计算机科学 2023-08-10 Zijian Li , Yuchang Sun , Jiawei Shao , Yuyi Mao , Jessie Hui Wang , Jun Zhang

Federated Trajectory Matching (FTM) is gaining increasing importance in big trajectory data analytics, supporting diverse applications such as public health, law enforcement, and emergency response. FTM retrieves trajectories that match…

数据库 · 计算机科学 2023-12-20 Yuxiang Wang , Yuxiang Zeng , Yi Xu , Zimu Zhou , Yongxin Tong

Federated Learning, as a popular paradigm for collaborative training, is vulnerable against privacy attacks. Different privacy levels regarding users' attitudes need to be satisfied locally, while a strict privacy guarantee for the global…

密码学与安全 · 计算机科学 2023-05-29 Yixuan Liu , Suyun Zhao , Li Xiong , Yuhan Liu , Hong Chen

The increasing demand for privacy-preserving data analytics in various domains necessitates solutions for synthetic data generation that rigorously uphold privacy standards. We introduce the DP-FedTabDiff framework, a novel integration of…

机器学习 · 计算机科学 2025-09-01 Timur Sattarov , Marco Schreyer , Damian Borth

Benchmarking is crucial for evaluating a DBMS, yet existing benchmarks often fail to reflect the varied nature of user workloads. As a result, there is increasing momentum toward creating databases that incorporate real-world user data to…

数据库 · 计算机科学 2025-04-11 Yunqing Ge , Jianbin Qin , Shuyuan Zheng , Yongrui Zhong , Bo Tang , Yu-Xuan Qiu , Rui Mao , Ye Yuan , Makoto Onizuka , Chuan Xiao

Tensor networks, widely used for providing efficient representations of low-energy states of local quantum many-body systems, have been recently proposed as machine learning architectures which could present advantages with respect to…

The localization technology is important for the development of indoor location-based services (LBS). The radio frequency (RF) fingerprint-based localization is one of the most promising approaches. However, it is challenging to apply this…

信号处理 · 电气工程与系统科学 2017-12-06 Yu Zhang , Xiao-Yang Liu

We provide a differentially private algorithm for producing synthetic data simultaneously useful for multiple tasks: marginal queries and multitask machine learning (ML). A key innovation in our algorithm is the ability to directly handle…

Location data privacy has become a serious concern for users as Location Based Services (LBSs) have become an important part of their life. It is possible for malicious parties having access to geolocation data to learn sensitive…

密码学与安全 · 计算机科学 2023-09-13 Alban Héon , Ryan Sheatsley , Quinn Burke , Blaine Hoak , Eric Pauley , Yohan Beugin , Patrick McDaniel