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

Table 8

Basis functions and important explanatory variables for the MARS model with (𝜌,𝛿_𝑖)=(0.9,1.0).

Function	Std. dev.	Cost of omission	Number of BF	Variable	Relative importance (%)
1	0.579	0.179	2	𝑥5	100.000
2	0.565	0.176	2	𝑥3	98.746
3	0.450	0.160	2	𝑥1	91.803
4	0.434	0.151	2	𝑥7	87.535
5	0.295	0.072	2	𝑥13	31.978
6	0.293	0.072	2	𝑥16	31.287
7	0.249	0.069	1	𝑥14	26.538
8	0.222	0.067	1	𝑥6	23.337