Spatiotemporal Privacy

Synonyms

Spatiotemporal Event Privacy

Definitions

Spatiotemporal privacy (Cao et al., 2019b) (Cao et al., 2019a) provides a general form of privacy protection for spatiotemporal event, which is formalized by Boolean expression of location-time predicates. It provides a metrics to quantify the indistinguishability of a spatiotemporal event.

Background

Location privacy has been extensively studied in the literature with focus on specific privacy goals, privacy metrics and location privacy preserving mechanisms (LPPMs). The privacy goal defines what should be protected, which typically are single location and a sequence of locations (i.e., a trajectory). The privacy metrics define the quantitative measurement of the protection regarding a specific privacy goal. The prior art of location privacy metrics, such as geo-indistinguishability (Andrés et al., 2013) and δ-location set privacy (**ao and **ong, 2015) (**ao et al., 2017), is extending differential privacy (Dwork, 2008) to location...