Multimode Process Monitoring Method Based on Multiblock Projection Nonnegative Matrix Factorization

Table 2

Comparison of fault detection accuracy (%).

Fault no.	PCA		NMF		PNMF		MPNMF
	1	99.3	100	99.6	97.4	99.6	91.6	99.9	91.2
2	98.3	99	98.4	96.8	98.4	96.0	98.6	95.6
3	6.3	4.9	10.4	8.8	15.4	9.1	21.4	12.1
4	31.1	100	77.5	99.2	57.7	99.0	100	11.6
5	27.8	26.9	33	36.1	35.9	34.3	36.8	98.9
6	99.4	100	100	99.9	100	99.6	100	100
7	100	100	97.8	100	100	100	100	100
8	97.4	94.9	98	97.3	98.6	97.8	98.9	97.1
9	5.3	4.6	7.8	16.5	10.3	15.4	13.3	11.3
10	45.6	49.6	55.4	57.4	57.0	57.8	63.6	59.5
11	48.1	80.5	69	68.3	67.1	60.9	78.1	17.7
12	98.5	94.6	99.4	98.3	99.5	98.6	99.5	100
13	94.3	95.3	94.8	93.8	94.9	94.1	95.0	94.7
14	99.5	100	100	99.9	100	91.4	100	87.7
15	8.5	8.3	19	10.8	20.5	10.9	23.8	18.0
16	30	47.6	43.9	55.8	49.0	54.5	55.8	52.4
17	80	96	89.3	95.3	87.8	95.4	91.7	88.2
18	89.9	90.5	90.5	91.4	90.5	91.1	92.2	90.2
19	14.5	28.8	10.3	37.3	8.4	39.0	27.4	31.0
20	42.5	60	55.5	67	57.5	67.3	62.8	81.2
21	40.6	56.1	46	47.5	46.6	51.6	57. 6	62.1

The significant test results are shown in bold.