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

Table 7

Basis functions and important explanatory variables for the MARS model with (𝜌,𝛿_𝑖)=(0.9,0.5).

Function	Std. dev.	Cost of omission	Number of BF	Variable	Relative importance (%)
1	0.789	0.363	2	𝑥5	100.000
2	0.761	0.356	2	𝑥3	98.013
3	0.570	0.304	2	𝑥1	79.033
4	0.531	0.289	2	𝑥7	72.994
5	0.412	0.225	1	𝑥13	35.419
6	0.402	0.225	1	𝑥16	34.692
7	0.349	0.221	1	𝑥14	30.760
8	0.315	0.218	1	𝑥6	27.641
9	0.317	0.218	1	𝑥10	27.426
10	0.306	0.217	1	𝑥17	26.965