Accelerometry-Based Classification of Human Activities Using Markov Modeling

Table 5

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	𝑆1	𝑆2	𝑆3	𝑆4	𝑆5	𝑆6	𝑆7
𝑆1	9686	10	3	29	1	53	22
𝑆2	0	6064	15	15	0	0	682
𝑆3	0	29	1825	2543	25	0	921
𝑆4	0	420	347	19189	35	0	613
𝑆5	0	2	4	1	580	6	23
𝑆6	2	0	0	0	0	18823	0
𝑆7	0	293	47	376	3	0	9939