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cs.DB2023
Accurate and Efficient Trajectory-based Contact Tracing with Secure Computation and Geo-Indistinguishability
Maocheng Li, Yuxiang Zeng, Libin Zheng +2
Contact tracing has been considered as an effective measure to limit the transmission of infectious disease such as COVID-19. Trajectory-based contact tracing compares the trajecto…
cs.CR2023
Dynamic Private Task Assignment under Differential Privacy
Leilei Du, Peng Cheng, Libin Zheng +4
Data collection is indispensable for spatial crowdsourcing services, such as resource allocation, policymaking, and scientific explorations. However, privacy issues make it challen…