AAL Middleware Infrastructure for Green Bed Activity Monitoring
Figure 13
Classification performance exploiting two features ( and ) and fixing the number of the emitted beacon (hence fixing the energy consumption) to 2: (a) shows the error rate as a function of the number of used sensors, evaluated fixing the observation period to 2, 1, 0.5, and 0.25 seconds; (b) shows true positive and false positive rates for each bed position, two used sensors ( and ).
