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As location-based services (LBS) have grown in popularity, more human mobility data has been collected. The collected data can be used to build machine learning (ML) models for LBS to enhance their performance and improve overall experience…

Machine Learning · Computer Science 2024-07-09 Kunlin Cai , Jinghuai Zhang , Zhiqing Hong , Will Shand , Guang Wang , Desheng Zhang , Jianfeng Chi , Yuan Tian

Do people care about their location privacy while using location-based service apps? This paper aims to answer this question and several other hypotheses through a survey, and review the privacy preservation techniques. Our results indicate…

Databases · Computer Science 2019-11-06 Sina Shaham , Saba Rafieian , Ming Ding , Mahyar Shirvanimoghaddam , Zihuai Lin

The location-based services provide an interesting combination of cyber and physical worlds. However, they can also threaten the users' privacy. Existing privacy preserving protocols require trusted nodes, with serious security and…

Cryptography and Security · Computer Science 2016-06-09 Meysam Ghaffari , Nasser Ghadiri , Mohammad Hossein Manshaei , Mehran Sadeghi Lahijani

Location-based services (LBSs) have become widely popular. Despite their utility, these services raise concerns for privacy since they require sharing location information with untrusted third parties. In this work, we study privacy-utility…

Information Theory · Computer Science 2019-10-07 Ecenaz Erdemir , Pier Luigi Dragotti , Deniz Gunduz

Knowledge discovery is one of the main goals of Artificial Intelligence. This Knowledge is usually stored in databases spread in different environments, being a tedious (or impossible) task to access and extract data from them. To this…

Machine Learning · Computer Science 2020-09-23 Daniel Hurtado Ramírez , J. M. Auñón

Cognitive radio networks (CRNs) have emerged as an essential technology to enable dynamic and opportunistic spectrum access which aims to exploit underutilized licensed channels to solve the spectrum scarcity problem. Despite the great…

Networking and Internet Architecture · Computer Science 2018-06-05 Mohamed Grissa , Bechir Hamdaoui , Attila A. Yavuz

Security and confidentiality of big data stored in the cloud are important concerns for many organizations to adopt cloud services. One common approach to address the concerns is client-side encryption where data is encrypted on the client…

Cryptography and Security · Computer Science 2019-08-15 SM Zobaed , Sahan Ahmad , Raju Gottumukkala , Mohsen Amini Salehi

This paper describes a new model for sharing location info for mobile users. This approach can operate without the need for disclosing identity info to third party servers. It could be described as a safe location sharing model. The…

Networking and Internet Architecture · Computer Science 2013-05-09 Dmitry Namiot

Location-Based Recommendation Services (LBRS) has seen an unprecedented rise in its usage in recent years. LBRS facilitates a user by recommending services based on his location and past preferences. However, leveraging such services comes…

Cryptography and Security · Computer Science 2021-06-01 Mishel Jain , Priyanka Singh , Balasubramanian Raman

Publishing datasets plays an essential role in open data research and promoting transparency of government agencies. However, such data publication might reveal users' private information. One of the most sensitive sources of data is…

Machine Learning · Computer Science 2019-11-06 Sina Shaham , Ming Ding , Bo Liu , Shuping Dang , Zihuai Lin , Jun Li

Clustering is an important tool for data exploration where the goal is to subdivide a data set into disjoint clusters that fit well into the underlying data structure. When dealing with sensitive data, privacy-preserving algorithms aim to…

Cryptography and Security · Computer Science 2024-08-21 Johannes Liebenow , Yara Schütt , Tanya Braun , Marcel Gehrke , Florian Thaeter , Esfandiar Mohammadi

Location privacy leaks can lead to unauthorised tracking, identity theft, and targeted attacks, compromising personal security and privacy. This study explores LLM-powered location privacy leaks associated with photo sharing on social…

Human-Computer Interaction · Computer Science 2025-03-27 Ying Ma , Shiquan Zhang , Dongju Yang , Zhanna Sarsenbayeva , Jarrod Knibbe , Jorge Goncalves

Governments and researchers around the world are implementing digital contact tracing solutions to stem the spread of infectious disease, namely COVID-19. Many of these solutions threaten individual rights and privacy. Our goal is to break…

Cryptography and Security · Computer Science 2020-04-23 Alex Berke , Michiel Bakker , Praneeth Vepakomma , Kent Larson , Alex 'Sandy' Pentland

We design a scalable algorithm to privately generate location heatmaps over decentralized data from millions of user devices. It aims to ensure differential privacy before data becomes visible to a service provider while maintaining high…

Cryptography and Security · Computer Science 2022-06-28 Eugene Bagdasaryan , Peter Kairouz , Stefan Mellem , Adrià Gascón , Kallista Bonawitz , Deborah Estrin , Marco Gruteser

Location-based services (LBSs) in vehicular ad hoc networks (VANETs) offer users numerous conveniences. However, the extensive use of LBSs raises concerns about the privacy of users' trajectories, as adversaries can exploit temporal…

Cryptography and Security · Computer Science 2024-01-23 Mingge Cao , Haopeng Zhu , Minghui Min , Yulu Li , Shiyin Li , Hongliang Zhang , Zhu Han

As people's daily life becomes increasingly inseparable from various mobile electronic devices, relevant service application platforms and network operators can collect numerous individual information easily. When releasing these data for…

Cryptography and Security · Computer Science 2023-08-01 Wanshu Yu , Haonan Shi , Hongyun Xu

With the rapid development of artificial intelligence and the advent of the 5G era, deep learning has received extensive attention from researchers. Broad Learning System (BLS) is a new deep learning model proposed recently, which shows its…

Cryptography and Security · Computer Science 2021-01-11 Haiyang Liu , Hanlin Zhang , Li Guo , Jia Yu , Jie Lin

Local Differential Privacy (LDP) is popularly used in practice for privacy-preserving data collection. Although existing LDP protocols offer high utility for large user populations (100,000 or more users), they perform poorly in scenarios…

Cryptography and Security · Computer Science 2019-10-22 Mehmet Emre Gursoy , Acar Tamersoy , Stacey Truex , Wenqi Wei , Ling Liu

Location privacy has been extensively studied in the literature. However, existing location privacy models are either not rigorous or not customizable, which limits the trade-off between privacy and utility in many real-world applications.…

Cryptography and Security · Computer Science 2020-07-16 Yang Cao , Yonghui Xiao , Shun Takagi , Li Xiong , Masatoshi Yoshikawa , Yilin Shen , Jinfei Liu , Hongxia Jin , Xiaofeng Xu

The burgeoning technology of Mobile Edge Computing is attracting the traditional LBS and LS to deploy due to its nature characters such as low latency and location awareness. Although this transplant will avoid the location privacy threat…

Cryptography and Security · Computer Science 2018-04-06 Hongli Zhang , Yuhang Wang , Xiaojiang Du , Mohsen Guizani