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Chinese Journal of Mechanical Engineering

Table 9 Estimation results of X-means and BIC algorithm

From: A Fast Multi-tasking Solution: NMF-Theoretic Co-clustering for Gear Fault Diagnosis under Variable Working Conditions

Algorithm

Clustering number

Sub-clustering number of row task

Precision of row task (%)

Health

Root

Missing

Chipped

Surface

BIC & co-clustering

k = 3

  

1

1

1

60.0

k = 4

1

 

1

1

1

79.8

k = 5

1

1

1

1

1

96.9

k = 6

1

2

1

1

1

96.3

k = 7

1

2

1

1

2

95.1

k = 8

1

2

2

1

2

94.0

k = 9

1

3

2

1

2

90.4

X-means

k = 12

2

3

3

2

2

84.1

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