Table 3 RGSA data: eigenvalues λk and domain dimensionality assuming Cmin = 0.9

From: Cost-efficient behavioral modeling of antennas by means of global sensitivity analysis and dimensionality reduction

Domain data

Antenna

I

II

III

IV

Dimensionality n of the original parameter space X

9

6

11

15

(Normalized) eigenvalues of the relocation matrix S

λ1 = 1.00

λ2 = 0.74

λ3 = 0.63

λ4 = 0.48

λ5 = 0.35

λ6 = 0.29

λ7 = 0.23

λ8 = 0.17

λ9 = 0.06

λ1 = 1.00

λ2 = 0.53

λ3 = 0.41

λ4 = 0.31

λ5 = 0.22

λ6 = 0.14

λ1 = 1.00

λ2 = 0.88

λ3 = 0.69

λ4 = 0.60

λ5 = 0.51

λ6 = 0.41

λ7 = 0.35

λ8 = 0.32

λ9 = 0.23

λ10 = 0.20

λ11 = 0.15

λ1 = 1.00

λ2 = 0.64

λ3 = 0.57

λ4 = 0.49

λ5 = 0.37

λ6 = 0.35

λ7 = 0.29

λ8 = 0.27

λ9 = 0.22

λ10 = 0.21

λ11 = 0.18

λ12 = 0.17

λ13 = 0.13

λ14 = 0.11

λ15 = 0.06

Reduced-dimensionality domain

Nd

4

3

4

5

\(\frac{{\sqrt {\sum\nolimits_{j = 1}^{{N_{d} }} {\lambda_{j}^{2} } } }}{{\sqrt {\sum\nolimits_{j = 1}^{n} {\lambda_{j}^{2} } } }}\)

0.94

0.95

0.89

0.91