A Novel Intelligent Method for Predicting the Penetration Rate of the Tunnel Boring Machine in Rocks

Table 5

The T_ij values induced by the five four-factor RVM-PSO models for the predictions of the penetration rates in the test samples.

i	Tij
	j = 1	j = 2	j = 3	j = 4	j = 5
1	2.95	1.34	2.15	2.92	2.22
2	2.56	1.14	1.89	2.89	1.76
3	3.14	1.41	2.27	3	2.27
4	1.74	0.72	1.31	2.11	1.26
5	2.57	1.15	1.90	2.89	1.76