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The COVID-19 pandemic has highlighted the need for innovative solutions to monitor and control the spread of infectious diseases. With the potential for future pandemics and the risk of outbreaks particularly in academic institutions, there…

Cryptography and Security · Computer Science 2023-07-21 Shobhit Aggarwal , Arnab Purkayastha

The 2020 COVID-19 pandemic has led to a global lockdown with severe health and economical consequences. As a result, authorities around the globe have expressed their needs for better tools to monitor the spread of the virus and to support…

Cryptography and Security · Computer Science 2020-07-07 Franck Legendre , Mathias Humbert , Alain Mermoud , Vincent Lenders

As pandemic wide spread results in locking down vital facilities, digital contact tracing is deemed as a key for re-opening. However, current efforts in digital contact tracing, running as mobile apps on users' smartphones, fall short in…

Computers and Society · Computer Science 2020-06-09 Mohamed F Mokbel , Sofiane Abbar , Rade Stanojevic

Social learning algorithms provide models for the formation of opinions over social networks resulting from local reasoning and peer-to-peer exchanges. Interactions occur over an underlying graph topology, which describes the flow of…

Signal Processing · Electrical Eng. & Systems 2023-03-15 Valentina Shumovskaia , Konstantinos Ntemos , Stefan Vlaski , Ali H. Sayed

Graph data, such as chemical networks and social networks, may be deemed confidential/private because the data owner often spends lots of resources collecting the data or the data contains sensitive information, e.g., social relationships.…

Cryptography and Security · Computer Science 2020-10-07 Xinlei He , Jinyuan Jia , Michael Backes , Neil Zhenqiang Gong , Yang Zhang

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

The coronavirus disease 2019 (COVID-19) is a severe global pandemic that has claimed millions of lives and continues to overwhelm public health systems in many countries. The spread of COVID-19 pandemic has negatively impacted the human…

Businesses planning for the post-pandemic world are looking for innovative ways to protect the health and welfare of their employees and customers. Wireless technologies can play a key role in assisting contact tracing to quickly halt a…

Cryptography and Security · Computer Science 2020-07-10 Pai Chet Ng , Petros Spachos , Stefano Gregori , Konstantinos Plataniotis

We present a mobile app solution to help the containment of an epidemic outbreak by keeping track of possible infections in the incubation period. We consider the particular case of an infection which primarily spreads among people through…

Computers and Society · Computer Science 2020-04-06 Marco Faggian , Michele Urbani , Luca Zanotto

Recent work has shown that cell phone mobility data has the unique potential to create accurate models for human mobility and consequently the spread of infected diseases. While prior studies have exclusively relied on a mobile network…

Cryptography and Security · Computer Science 2022-06-14 Alexandros Bampoulidis , Alessandro Bruni , Lukas Helminger , Daniel Kales , Christian Rechberger , Roman Walch

Smartphone-based contact-tracing applications are at the epicenter of the global fight against the Covid-19 pandemic. While governments and healthcare agencies are eager to mandate the deployment of such applications en-masse, they face…

Cryptography and Security · Computer Science 2020-12-10 Jianwei Huang , Vinod Yegneswaran , Phillip Porras , Guofei Gu

The pandemic in 2020 and 2021 had enormous economic and societal consequences, and studies show that contact tracing algorithms can be key in the early containment of the virus. While large strides have been made towards more effective…

Cryptography and Security · Computer Science 2024-02-16 Rob Romijnders , Christos Louizos , Yuki M. Asano , Max Welling

Graph Neural Networks (GNNs) have achieved state-of-the-art performance for link prediction. However, GNNs suffer from poor interpretability, which limits their adoptions in critical scenarios that require knowing why certain links are…

Machine Learning · Computer Science 2023-05-23 Huaisheng Zhu , Dongsheng Luo , Xianfeng Tang , Junjie Xu , Hui Liu , Suhang Wang

Debate about the adoption of digital contact tracing (DCT) apps to control the spread of COVID-19 has focussed on risks to individual privacy (Sharma & Bashir 2020, Tang 2020). This emphasis reveals significant challenges to ethical…

Computers and Society · Computer Science 2020-07-15 Andrew Buzzell

Recent developments in sensing technologies have enabled us to examine the nature of human social behavior in greater detail. By applying an information theoretic method to the spatiotemporal data of cell-phone locations, [C. Song et al.…

Physics and Society · Physics 2011-10-04 Taro Takaguchi , Mitsuhiro Nakamura , Nobuo Sato , Kazuo Yano , Naoki Masuda

Context-aware reasoning systems allow drawing sophisticated inferences about users' behaviour and physiological condition, by aggregating data from seemingly unrelated sources. We conducted a general population online survey to evaluate…

Computers and Society · Computer Science 2020-07-06 Matthias Forstmann , Alberto Giaretta , Jennifer Renoux

We propose a novel framework to enable Knowledge Graphs (KGs) sharing while ensuring that information that should remain private is not directly released nor indirectly exposed via derived knowledge, maintaining at the same time the…

Databases · Computer Science 2025-12-17 Luigi Bellomarini , Costanza Catalano , Andrea Coletta , Michela Iezzi , Pierangela Samarati

Consider two parties who want to compare their strings, e.g., genomes, but do not want to reveal them to each other. We present a system for privacy-preserving matching of strings, which differs from existing systems by providing a…

Cryptography and Security · Computer Science 2013-02-13 Martin Beck , Florian Kerschbaum

Graphs can represent relational information among entities and graph structures are widely used in many intelligent tasks such as search, recommendation, and question answering. However, most of the graph-structured data in practice suffers…

Information Retrieval · Computer Science 2021-12-30 Hanxiong Chen , Yunqi Li , Shaoyun Shi , Shuchang Liu , He Zhu , Yongfeng Zhang

This work is inspired by the outbreak of COVID-19, and some of the challenges we have observed with gathering data about the disease. To this end, we aim to help collect data about citizens and the disease without risking the privacy of…

Cryptography and Security · Computer Science 2020-05-01 Katrine Tjell , Jaron Skovsted Gundersen , Rafael Wisniewski