WiFi Positioning Based on User Orientation Estimation and Smartphone Carrying Position Recognition

Table 1

Confusion table of Random Forest classifier with orientation invariant and normal features.

(Orientation Invariant/Normal Features)	Hand-Held	Phone-Call	Swinging-Hand	In-Pocket
Hand-Held	0.982/0.904	0.018/0.063	0/0.033	0/0
Phone-Call	0.01/0.064	0.990/0.915	0/0.004	0/0.017
Swinging-Hand	0/0.018	0/0.001	0.986/0.896	0.014/0.085
In-Pocket	0/0	0/0	0.028/0.081	0.972/0.919