Rockburst Prediction Based on the KPCA-APSO-SVM Model and Its Engineering Application

Table 6

Prediction results of engineering cases.

No.	Reference	Prediction indices			Actual level	Prediction results
		σθ/σc	σc/σt			BPNN	SVM	APSO-SVM	KPCA-APSO-SVM
1	[15]	0.62	20.0	3.1	III	III	III	III	III
2	[32]	0.61	17.9	5.3	III	III	III	III	III
3	[33]	0.44	13.1	2.1	II	II	I	II	II
4	[34]	0.71	32.2	5.5	IV	III	III	IV	IV
5	[35]	0.47	11.0	4.0	III	II	III	III	III