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

Table 6

Basis functions and important explanatory variables for the MARS model with (𝜌,𝛿_𝑖)=(0.5,1.0).

Function	Std. dev.	Cost of omission	Number of BF	Variable	Relative importance (%)
1	0.540	0.352	1	𝑥3	100.000
2	0.535	0.344	2	𝑥5	97.416
3	0.389	0.306	1	𝑥1	83.637
4	0.380	0.294	1	𝑥7	78.935
5	0.174	0.217	2	𝑥13	35.183
6	0.167	0.216	2	𝑥16	33.487
7	0.149	0.212	1	𝑥20	29.230
8	0.143	0.211	1	𝑥14	29.042