METHOD, APPARATUS, AND COMPUTER PROGRAM PRODUCT FOR QUANTIFYING THE PRIVACY RISK OF TRAJECTORY DATA

Embodiments described herein relate measuring and quantifying the privacy risk for disclosure of trajectory data based on one or more attributes of the trajectory data. Methods may include: receiving probe data points defining at least one trajectory; identifying attributes of the at least one trajectory, where the identified attributes include values for respective trajectories; calculating a privacy risk associated with the at least one trajectory based, at least in part, on a distribution of values of the identified attributes, where the privacy risk includes a measure of difficulty in identifying a source of the at least one trajectory; and providing information associated with the at least one trajectory for location-based services in response to the privacy risk satisfying a predetermined value.