Table 3.

Activity recognition performance when operating on the smartphone data

Activity	SE	SP	PPV	NPV	F-score
Eating	0.87	0.99	0.86	0.99	0.86
Running	0.97	1.00	1.00	1.00	0.99
Sitting	0.94	0.98	0.93	0.98	0.94
Standing	0.88	0.99	0.95	0.98	0.91
Walking	0.99	0.99	0.98	1.00	0.99
Jogging	0.99	1.00	0.98	1.00	0.99
Stretching	0.96	0.99	0.91	1.00	0.93
Sweeping	0.93	0.99	0.90	0.99	0.91
Lying down	0.84	1.00	0.92	0.99	0.88

Each metric correspond to SE sensitivity, SP specificity, PPV positive predictive value, NPV, negative predictive value and F-score