Table 5.

The best results of respective sensor combinations for double, triple, quadruple and quintuple. (P: positive; N: negative). A-head, B-chest, C-waist, D-right wrist, E-right thigh and F-right ankle. Acc (%)* is accuracy.

			CONFUSION MATRICES
			k-NN			BDM			SVM			LSM			DTW			ANN
Double			P	N		P	N		P	N		P	N		P	N		P	N
	TRUE	P	1398	2		1398.5	1.5		1395.2	4.8		1387.3	12.7		1372.5	27.5		1356.6	43.4
		N	0	1120		8.6	1111.4		5.6	1114.4		11.4	1108.6		38.7	1081.3		64.6	1055.4
Acc (%)*			99.92			99.60			99.59			99.04			97.37			95.71
Combinations			CA			CA			FC			FA			EA			EB
Triple			P	N		P	N		P	N		P	N		P	N		P	N
	TRUE	P	1399	1		1399	1		1395.1	4.9		1397	3		1384	16		1366.1	33.9
		N	0.4	1119.6		1.4	1118.6		3	1117		10.2	1109.8		37.4	1082.6		66.5	1053.5
Acc (%)*			99.94			99.90			99.69			99.48			97.88			96.02
Combinations			ECA			ECA			FEA			FDA			EBA			EBA
Quadruple			P	N		P	N		P	N		P	N		P	N		P	N
	TRUE	P	1400	0		1398.3	1.7		1395.4	4.6		1399.1	0.9		1381	19		1368.5	31.5
		N	0.5	1118.5		3.6	1116.4		3.1	1116.9		7.3	1112.7		26.7	1093.3		62.4	1057.6
Acc (%)*			99.94			99.79			99.69			99.67			98.19			96.27
Combinations			FDBA			FEBA			FEBA			FEDA			FDCA			ECBA
Quintuple			P	N		P	N		P	N		P	N		P	N		P	N
	TRUE	P	1399.7	0.3		1398.2	1.8		1394.8	5.2		1400	0		1389.4	10.6		1367.6	32.4
		N	2.2	1117.8		7	1113		3	1117		10.9	1109.1		22.9	1097.1		63.8	1056.2
Acc (%)*			99.90			99.65			99.67			99.57			98.67			96.18
Combinations			FEDBA			FECBA			FECBA			FEDCA			EDCBA			FECBA