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Understanding urban dynamics, i.e., how the types and intensity of urban residents' activities in the city change along with time, is of urgent demand for building an efficient and livable city. Nonetheless, this is challenging due to the…

Social and Information Networks · Computer Science 2019-11-14 Sirui Song , Tong Xia , Depeng Jin , Pan Hui , Yong Li

Understanding the patterns of mobility of individuals is crucial for a number of reasons, from city planning to disaster management. There are two common ways of quantifying the amount of travel between locations: by direct observations…

Physics and Society · Physics 2014-08-25 Vasyl Palchykov , Marija Mitrović , Hang-Hyun Jo , Jari Saramäki , Raj Kumar Pan

Human mobility patterns refer to the regularities and trends in the way people move, travel, or navigate through different geographical locations over time. Detecting human mobility patterns is essential for a variety of applications,…

Social and Information Networks · Computer Science 2023-05-23 Yisheng Alison Zheng , Abdallah Lakhdari , Amani Abusafia , Shing Tai Tony Lui , Athman Bouguettaya

Urban environments offer a challenging scenario for autonomous driving. Globally localizing information, such as a GPS signal, can be unreliable due to signal shadowing and multipath errors. Detailed a priori maps of the environment with…

Robotics · Computer Science 2021-08-12 Jordan Chipka

Visual localization and mapping is a crucial capability to address many challenges in mobile robotics. It constitutes a robust, accurate and cost-effective approach for local and global pose estimation within prior maps. Yet, in highly…

Computer Vision and Pattern Recognition · Computer Science 2018-07-11 Guoxiang Zhou , Berta Bescos , Marcin Dymczyk , Mark Pfeiffer , José Neira , Roland Siegwart

The massive amounts of geolocation data collected from mobile phone records has sparked an ongoing effort to understand and predict the mobility patterns of human beings. In this work, we study the extent to which social phenomena are…

Physics and Society · Physics 2016-11-18 Nicolas Ponieman , Alejo Salles , Carlos Sarraute

People increasingly share personal information, including their photos and photo collections, on social media. This information, however, can compromise individual privacy, particularly as social media platforms use it to infer detailed…

Computer Vision and Pattern Recognition · Computer Science 2019-12-05 Jinghan Yang , Ayan Chakrabarti , Yevgeniy Vorobeychik

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

Obfuscation techniques in location-based services (LBSs) have been shown useful to hide the concrete locations of service users, whereas they do not necessarily provide the anonymity. We quantify the anonymity of the location data…

Cryptography and Security · Computer Science 2023-07-19 Yusuke Kawamoto , Takao Murakami

We consider the problem of privacy-preserving data release for a specific utility task under perfect obfuscation constraint. We establish the necessary and sufficient condition to extract features of the original data that carry as much…

Information Theory · Computer Science 2020-09-10 Behrooz Razeghi , Flavio. P. Calmon , Deniz Gunduz , Slava Voloshynovskiy

Understanding human mobility is essential for the development of smart cities and social behavior research. Human mobility models may be used in numerous applications, including pandemic control, urban planning, and traffic management. The…

Social and Information Networks · Computer Science 2022-09-09 Yisheng Alison Zheng , Amani Abusafia , Abdallah Lakhdari , Shing Tai Tony Lui , Athman Bouguettaya

Nowadays, crowd sensing becomes increasingly more popular due to the ubiquitous usage of mobile devices. However, the quality of such human-generated sensory data varies significantly among different users. To better utilize sensory data,…

Cryptography and Security · Computer Science 2018-10-12 Yaliang Li , Houping Xiao , Zhan Qin , Chenglin Miao , Lu Su , Jing Gao , Kui Ren , Bolin Ding

The interaction of all mobile species with their environment hinges on their movement patterns: the places they visit and how frequently they go there. In human society, where the prevalent form of cohabitation is in cities, the highly…

Physics and Society · Physics 2020-02-17 Markus Schläpfer , Michael Szell , Hadrien Salat , Carlo Ratti , Geoffrey B. West

Information about people's movements and the locations they visit enables an increasing number of mobility analytics applications, e.g., in the context of urban and transportation planning, In this setting, rather than collecting or sharing…

Cryptography and Security · Computer Science 2017-06-13 Apostolos Pyrgelis , Carmela Troncoso , Emiliano De Cristofaro

The exponential growth of collected, processed, and shared data has given rise to concerns about individuals' privacy. Consequently, various laws and regulations have been established to oversee how organizations handle and safeguard data.…

Cryptography and Security · Computer Science 2023-12-20 Wenjun Lin , Jiahao Qian , Wenwen Liu , Lang Wu

Urbanization has been the dominant demographic trend in the entire world, during the last half century. Rural to urban migration, international migration, and the re-classification or expansion of existing city boundaries have been among…

Physics and Society · Physics 2013-12-19 Philippe Blanchard , Dimitri Volchenkov

The development of positioning technologies has resulted in an increasing amount of mobility data being available. While bringing a lot of convenience to people's life, such availability also raises serious concerns about privacy. In this…

Cryptography and Security · Computer Science 2017-09-07 Michael Backes , Mathias Humbert , Jun Pang , Yang Zhang

Cities are living systems where urban infrastructures and their functions are defined and evolved due to population behaviors. Profiling the cities and functional regions has been an important topic in urban design and planning. This paper…

Social and Information Networks · Computer Science 2017-07-14 Lei Shi , Tao Jiang , Ye Zhao , Xiatian Zhang , Yao Lu

Gait recognition is the process of identifying humans from their bipedal locomotion such as walking or running. As such, gait data is privacy sensitive information and should be anonymized where possible. With the rise of higher quality…

Cryptography and Security · Computer Science 2023-09-04 Simon Hanisch , Evelyn Muschter , Admantini Hatzipanayioti , Shu-Chen Li , Thorsten Strufe

Many aspects of life are associated with places of human mobility patterns and nowadays we are facing an increase in the pervasiveness of mobile devices these individuals carry. Positioning technologies that serve these devices such as the…

Machine Learning · Computer Science 2019-09-26 Thiago Andrade , Brais Cancela , João Gama