236 Big Data: Techniques and Technologies in Geoinformatics
importance of a region is determined by the stay time. The stay time refers to the
duration that an object stays in a region. TMC-Pattern is proposed due to the over-
generalization of mobility information on existing trajectory models. For example,
in the trajectory model proposed by Quannan et al. (2008), a region is termed a stay
region if the duration of an object in that region exceeds a dened threshold time
(e.g., 20 min). People usually spend longer than 20 min in a theater. Hence, a theater
will be labeled according to their model as an important or interesting stay region.
But is a theater truly a stay region throughout the day? Theaters are almost empty
in the morning and ...