Accelerometry-Based Classification of Human Activities Using Markov Modeling

Table 7

Confusion matrix obtained comparing HMM (1st + 2nd level) classifier output (columns) and the actual activity class labels after spurious data rejection (rows). All subjects’ results are aggregated.

cHMM	Sit	Stand	Walk
Sit	4973	10	0
Stand	0	3989	28
Walk	0	64	2270