Table 2.

Summary of activity recognition features.

Feature	Description
lastSensorEventHours	Hour of day
lastSensorEventSeconds	Seconds since midnight
windowDuration	Length of window (seconds)
timeSinceLastSensorEvent	Seconds since previous event
prevDominantSensor1	Most frequent sensor in previous window
prevDominantSensor2	Most frequent sensor two windows ago
lastSensorID	Most recent sensor identifier
lastLocation	Most recent sensor location
sensorCount	Number of events in window for each sensor
sensorElTime	Elapsed time since each sensor fired