A Research on Maximum Symbolic Entropy from Intrinsic Mode Function and Its Application in Fault Diagnosis

Table 5

Results of contrast test based on K-means cluster.

(a) Maximum symbolic entropy of IMFs

Sample	Accuracy (%)
	IMF1	IMF1–3	IMF1–5
A	75.42	82.50	85.00
B	75.00	80.42	75.42
C	75.00	80.42	79.17
D	76.25	80.83	77.92

(b) Symbolic entropy of IMFs

Sample	Accuracy (%)
	IMF1	IMF1–3	IMF1–5
A	67.08	70.83	70.83
B	68.75	72.50	72.50
C	68.75	65.42	65.42
D	65.42	65.83	66.67

(c) Standard deviation of IMFs

Sample	Accuracy (%)
	IMF1	IMF1–3	IMF1–5
A	60.41	60.41	63.75
B	99.58	99.58	99.58
C	91.67	93.33	93.33
D	54.58	55.42	55.42

(d) Root mean square of IMFs

Sample	Accuracy (%)
	IMF1	IMF1–3	IMF1–5
A	60.41	62.08	67.08
B	99.58	99.58	99.58
C	51.67	57.50	58.75
D	57.08	61.25	61.25