Group Nearest Neighbor Queries
ICDE '04 Proceedings of the 20th International Conference on Data Engineering
Anonymous Usage of Location-Based Services Through Spatial and Temporal Cloaking
Proceedings of the 1st international conference on Mobile systems, applications and services
Private queries in location based services: anonymizers are not necessary
Proceedings of the 2008 ACM SIGMOD international conference on Management of data
Private Queries and Trajectory Anonymization: a Dual Perspective on Location Privacy
Transactions on Data Privacy
A survey of computational location privacy
Personal and Ubiquitous Computing
Privacy preserving group nearest neighbor queries
Proceedings of the 13th International Conference on Extending Database Technology
Safeguarding location privacy in wireless ad-hoc networks
UbiComp '07 Proceedings of the 9th international conference on Ubiquitous computing
GLP: A cryptographic approach for group location privacy
Computer Communications
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User privacy in location-based services (LBSs) has become an important research area. We introduce a new direction to protect user privacy that evaluates LBSs with crowdsourced data and computation and eliminates the role of a location-based service provider. We focus on the group nearest neighbor (GNN) query that allows a group to meet at their nearest point of interest such as a restaurant that minimizes the total or maximum distance of the group. We develop a crowdsource-based approach, called PrivateMeetUp, to evaluate GNN queries in a privacy preserving manner and implement a working prototype of PrivateMeetUp.