SVM versus MAP on Accelerometer Data to Distinguish among Locomotor Activities Executed at Different Speeds

Table 3

Confusion matrix and Normalized Mutual Information (NMI) for the testing set.

	Predicted SVM			(NMI = 0.3550)
	Activity	Walking	Stair climbing	Stair descending
Actual	Walking (%)	77.2	8.1	14.6
	Stair climbing (%)	10.2	77.7	12.1
	Stair descending (%)	15.8	9.9	74.2
	Predicted MAP			(NMI = 0.5134)
	Activity	Walking	Stair climbing	Stair descending
Actual	Walking (%)	85.1	4.8	10.1
	Stair climbing (%)	6.6	87.2	6.3
	Stair descending (%)	12.8	5.8	81.3