“…Another very important aspect of the AAL system is related to the appropriate analysis of the data received from sensors through the decision-making process. Specifically, pure sensor data are sufficient only for triggering alarms for critical situations such as fire detection [ 11 , 14 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ], smoke [ 11 , 14 , 24 , 26 , 27 , 28 , 29 ], and gas leakage [ 11 , 24 , 25 , 29 ]. To obtain information about daily user activity, more complex analysis and decision-making systems are required.…”