Human Activity Recognition in AAL Environments Using Random Projections

Table 5

The confusion matrix of within-subject activity classification using Rankfeatures.

Activity	WF	WL	WR	WU	WD	RF	JU	Si	St	Sl	EU	ED
WF	1	0.774	0.980	0.874	0.985	0.996	0.980	0.997	0.999	1	0.999	1
WL	0.774	1	0.989	0.968	0.958	0.998	0.996	0.951	0.999	1	0.999	1
WR	0.980	0.989	1	0.798	0.998	0.997	0.988	0.988	0.971	1	0.981	1
WU	0.874	0.968	0.798	1	0.708	0.985	0.979	0.962	0.998	1	0.971	1
WD	0.985	0.958	0.998	0.708	1	0.992	0.878	0.967	0.850	1	0.986	1
RF	0.996	0.998	0.997	0.985	0.992	1	0.978	0.991	0.996	0.957	0.994	1
JU	0.980	0.996	0.988	0.979	0.878	0.978	1	0.973	1	0.929	1	1
Si	0.997	0.951	0.988	0.962	0.967	0.991	0.973	1	0.987	1	0.126	0.992
St	0.999	0.999	0.971	0.999	0.850	0.995	1	0.987	1	1	0.326	0.887
Sl	1	1	1	1	1	0.957	0.930	1	1	1	1	0.992
EU	0.999	0.999	0.981	0.971	0.986	0.994	1	0.126	0.326	1	1	0.697
ED	1	1	1	1	1	1	1	0.992	0.887	0.992	0.697	1
Mean	0.965	0.969	0.974	0.937	0.944	0.990	0.975	0.911	0.918	0.989	0.840	0.964
Baseline	0.650	0.616	0.616	0.712	0.713	0.621	0.641	0.627	0.642	0.651	0.640	0.628

WF: Walking Forward; WL: Walking Left; WR: Walking Right; WU: Walking Upstairs; WD: Walking Downstairs; RF: Running Forward; JU: Jumping Up; Si: Sitting; St: Standing; Sl: Sleeping; EU: Elevator Up; ED: Elevator Down.