Mobility Profiles - Methodology and Case of Study on Pisa

The methodology allows to extract the systematic component of the user's behavior: the trajectories which are repeated "almost" every day are called routines and the set of these typical movements is called user's mobility profile. The Figures show the whole set of trajectories in Pisa and surrounding area and anly the systematic ones.

The Mobility profile extraction process is composed by three steps: (a) Trajectory Building; (b) group detection/outlier removal; (c) selection of representative mobility profiles. In the example above a set of user's trajecotry is depicted and grouped into two sets by similarity: A and B leaving out some "anomalies". Of the 30 trips, 11 are part of group A, and 12 of group B, while the remaining 7 are noise. The two routines are spatially similar, yet move in opposite directions (points represent the end of trips), i.e., south (A) vs. north (B).

Distribution number of routines per users. Typically each user has one or two routines due to the commuting trips between home and work.

Reports the temporal distribution of the trajectories and routines. Here we can see that the profiles closely follow the timing of typical working days, highlighting the three peeks during earlymorning (5–6), lunchtime (11–12),and late afternoon(17–18).