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

Table 4

Basis functions and important explanatory variables for the MARS model with (𝜌,𝛿_𝑖)=(0.1,1.0).

Function	Std. dev.	Cost of omission	Number of BF	Variable	Relative importance (%)
1	0.517	0.372	3	𝑥5	100.000
2	0.519	0.370	2	𝑥3	99.356
3	0.395	0.328	2	𝑥1	85.740
4	0.369	0.310	1	𝑥7	79.157
5	0.066	0.211	1	𝑥20	15.440