Fault Diagnosis Method of Polymerization Kettle Equipment Based on Rough Sets and BP Neural Network

Table 6

Performance indexes of four kinds of improved BP training algorithm.

Improved BP algorithm	MOBP algorithm	VLBP algorithm	CGBP algorithm	LMBP algorithm
Iterations	Without reaching a designated error limit in predetermined steps	416	175	15
Training error		0.00946039	0.00938337	0.009994105