Privacy-Preserving Spatial Trajectory Prediction

One of the location-based services, spatial trajectory prediction, can be used in a variety of purposes such as travel recommendations and traffic control and planning, but at the same time, just like most location-based services, the concern of user privacy is a major issue. Without rigorous privacy protection, users would be reluctant to use the services. This research proposes a privacy-preserving method of predicting a spatial trajectory based on the current and previous trajectories by using a matrix representation. Preliminary experimental results show this method is effective and secure for spatial trajectory prediction.