Research on Pattern Recognition Method of Blockage Signal in Pipeline Based on LMD Information Entropy and ELM

Table 2

Test results of two methods.

State	Classification accuracy
	LMD information entropy	EMD information entropy
Health	1	0.9167
Slight blockage	0.8333	0.8333
Medium blockage	0.8333	0.75
Serious blockage	0.9167	0.75
Average value	0.8958	0.8125