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Table 7 Accuracy of multivariate rational RS model for the 2-bar truss structure problem

From: Multivariate Rational Response Surface Approximation of Nodal Displacements of Truss Structures

Evaluation standards

Node A

Multiple fitting coefficient \(R^{2}\)

1

Modified multiple fitting coefficient \(R_{\text{adj}}^{2}\)

1

Maximum relative error ζmax/%

6.58 × 10−14

Minimum relative error ζmin/%

1.15 × 10−14

Average relative error ζavg/%

2.05 × 10−14