Table 1.

Placement of sensors (as specified in the Opportunity activity recognition dataset [20]).

Placement	Sensor
	IMU	3-Axial
Left Foot	1
Right Foot	1
Up Right Knee		1
Low Right Knee		1
Hip		1
Back	1	1
Right Forearm	1	2
Left Forearm	1	2
Right Arm	1
Left Arm	1
Right Hand		1
Left Hand		1
Right Wrist		1