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When it comes to location-based services (LBS), user privacy protection can be in conflict with security of both users and trips. While LBS providers could adopt privacy preservation mechanisms to obfuscate customer data, the accuracy of…

Cryptography and Security · Computer Science 2021-12-14 Dajiang Suo , M. Elena Renda , Jinhua Zhao

Image-based localization is a core component of many augmented/mixed reality (AR/MR) and autonomous robotic systems. Current localization systems rely on the persistent storage of 3D point clouds of the scene to enable camera pose…

Computer Vision and Pattern Recognition · Computer Science 2019-03-14 Pablo Speciale , Johannes L. Schönberger , Sing Bing Kang , Sudipta N. Sinha , Marc Pollefeys

In a Public Safety (PS) situation, agents may require critical and personally identifiable information. Therefore, not only does context and location-aware information need to be available, but also the privacy of such information should be…

Cryptography and Security · Computer Science 2016-11-18 Hamidreza Ghafghazi , Amr ElMougy , Hussein T. Mouftah , Carlisle Adams

Crowdsourcing enables application developers to benefit from large and diverse datasets at a low cost. Specifically, mobile crowdsourcing (MCS) leverages users' devices as sensors to perform geo-located data collection. The collection of…

Cryptography and Security · Computer Science 2019-06-06 Spyros Boukoros , Mathias Humbert , Stefan Katzenbeisser , Carmela Troncoso

Privacy preservation is an important issue in today's context of extreme penetration of internet and mobile technologies. It is more important in the case of Wireless Sensor Networks (WSNs) where collected data often requires in-network…

Cryptography and Security · Computer Science 2016-11-17 Arijit Ukil

Many proximity-based mobile social networks are developed to facilitate connections between any two people, or to help a user to find people with matched profile within a certain distance. A challenging task in these applications is to…

Social and Information Networks · Computer Science 2012-08-01 Lan Zhang , Xiang-Yang Li

The prevalence of mobile devices and Location-Based Services (LBS) necessitate the study of Location Privacy-Preserving Mechanisms (LPPM). However, LPPMs reduce the utility of LBS due to the noise they add to users' locations. Here, we…

Information Theory · Computer Science 2019-12-06 Nazanin Takbiri , Virat Shejwalker , Amir Houmansadr , Dennis L. Goeckel , Hossein Pishro-Nik

Location Privacy-Preserving Mechanisms (LPPMs) in the literature largely consider that users' data available for training wholly characterizes their mobility patterns. Thus, they hardwire this information in their designs and evaluate their…

Cryptography and Security · Computer Science 2019-05-24 Simon Oya , Carmela Troncoso , Fernando Pérez-González

The widespread adoption of smart meters provides access to detailed and localized load consumption data, suitable for training building-level load forecasting models. To mitigate privacy concerns stemming from model-induced data leakage,…

Cryptography and Security · Computer Science 2023-12-04 Shourya Bose , Yu Zhang , Kibaek Kim

Location privacy-preserving mechanisms (LPPMs) have been extensively studied for protecting a user's location at each time point or a sequence of locations with different timestamps (i.e., a trajectory). We argue that existing LPPMs are not…

Databases · Computer Science 2020-12-09 Yang Cao , Yonghui Xiao , Li Xiong , Liquan Bai

This paper investigates capabilities of Privacy-Preserving Deep Learning (PPDL) mechanisms against various forms of privacy attacks. First, we propose to quantitatively measure the trade-off between model accuracy and privacy losses…

Machine Learning · Computer Science 2020-06-25 Lixin Fan , Kam Woh Ng , Ce Ju , Tianyu Zhang , Chang Liu , Chee Seng Chan , Qiang Yang

The widespread adoption of continuously connected smartphones and tablets developed the usage of mobile applications, among which many use location to provide geolocated services. These services provide new prospects for users: getting…

Cryptography and Security · Computer Science 2018-10-09 Primault Vincent , Boutet Antoine , Ben Mokhtar Sonia , Brunie Lionel

With the increasing amount of mobility data being collected on a daily basis by location-based services (LBSs) comes a new range of threats for users, related to the over-sharing of their location information. To deal with this issue,…

Cryptography and Security · Computer Science 2016-09-26 Vincent Primault , Antoine Boutet , Sonia Ben Mokhtar , Lionel Brunie

In this paper, we review the state of the art of privacy-preserving schemes for ad hoc social networks, including, mobile social networks (MSNs) and vehicular social networks (VSNs). Specifically, we select and in-detail examine…

Cryptography and Security · Computer Science 2016-10-20 Mohamed Amine Ferrag , Leandros Maglaras , Ahmed Ahmim

A measure of privacy infringement for agents (or participants) travelling across a transportation network in participatory-sensing schemes for traffic estimation is introduced. The measure is defined to be the conditional probability that…

Optimization and Control · Mathematics 2016-09-06 Farhad Farokhi , Iman Shames

The ability of a sensor node to determine its physical location within a network (Localization) is of fundamental importance in sensor networks. Interpretating data from sensors will not be possible unless the context of the data is known;…

Networking and Internet Architecture · Computer Science 2007-05-23 Sameer Tilak , Vinay Kolar , Nael B. Abu-Ghazaleh , Kyoung-Don Kang

Location privacy-preserving mechanisms (LPPMs) have been extensively studied for protecting users' location privacy by releasing a perturbed location to third parties such as location-based service providers. However, when a user's…

Databases · Computer Science 2020-05-20 Yang Cao , Yonghui Xiao , Li Xiong , Liquan Bai , Masatoshi Yoshikawa

Human mobility is highly predictable. Individuals tend to only visit a few locations with high frequency, and to move among them in a certain sequence reflecting their habits and daily routine. This predictability has to be taken into…

Cryptography and Security · Computer Science 2014-09-08 George Theodorakopoulos , Reza Shokri , Carmela Troncoso , Jean-Pierre Hubaux , Jean-Yves Le Boudec

An increasing amount of mobility data is being collected every day by different means, e.g., by mobile phone operators. This data is sometimes published after the application of simple anonymization techniques, which might lead to severe…

Cryptography and Security · Computer Science 2016-11-17 Vincent Primault , Sonia Ben Mokhtar , Lionel Brunie

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