Hybrid Artificial Neural Networks Modeling for Faults Identification of a Stochastic Multivariate Process

Table 5

Basis functions and important explanatory variables for the MARS model with (𝜌,𝛿_𝑖)=(0.5,0.5).

Function	Std. dev.	Cost of omission	Number of BF	Variable	Relative importance (%)
1	0.596	0.871	2	𝑥3	100.000
2	0.582	0.864	2	𝑥5	98.281
3	0.380	0.764	2	𝑥7	68.774
4	0.369	0.763	1	𝑥1	68.220
5	0.245	0.702	1	𝑥13	40.739
6	0.234	0.700	1	𝑥16	39.271
7	0.203	0.692	2	𝑥17	33.836
8	0.195	0.691	1	𝑥14	32.728
9	0.188	0.688	1	𝑥20	30.632
10	0.186	0.688	1	𝑥6	30.530