Table 6.
Sensor features. Daily averages within the duration of the study are considered as global features for the starred (*) items.
Relevant Behavior | Features | Sensor |
---|---|---|
Physical Activity | most common activity; number of steps* | Activity Steps |
Phone Usage | length* and its min, max, mean, and standard deviation of interactions or unlocks; first time turned on/locked each day; last on/locked/unlocked each day; | Screen |
Social Inateractions | number of incoming/outgoing/missed calls*; duration of incoming/outgoing calls* | Call |
Mobility | number of changes in activities*; number of activities*; location variance*; radius of gyration*; total distance traveled* and its descriptive statistics (min, max, mean, standard deviation); location entropy*; number of distinct locations visited; circadian movement*; number of transitions between different locations*; percentage of time in motion*; length* of stay in different locations and its descriptive statistics (min, max, mean, standard deviation); time* spent at top three most visited locations; time* spent at rare locations | Activity Location |
Sleep | total time in bed*; total time asleep*; number of sleep periods; minutes to fall asleep/awake/asleep* and onset of the main sleep and other sleeps in aggregate | Sleep |