A Novel Shearer Cutting State Recognition Method Based on Improved Variational Mode Decomposition and LSSVM with Acoustic Signals

Table 7

The cutting state recognition results of the four methods without using PCA.

Methods	Accuracy (%)			Standard deviation
	Max.	Min.	Mean
IGSA-VMD	88.33	78.33	84.34	0.01824
GSA-VMD	86.67	74.17	82.45	0.01956
VMD	81.67	70.83	78.87	0.2248
EEMD	84.17	73.33	80.96	0.01758