Gaussian radial basis function based global sensitivity analysis method
A Gaussian radial basis and sensitivity analysis technology, applied in the field of global sensitivity analysis based on Gaussian radial basis function, which can solve the problem of poor approximation ability of low-order nonlinear polynomials, inaccurate sensitivity analysis results, and easy overfitting of high-order polynomial approximations. problems of cohesion
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[0153] The method used in the embodiment includes the following steps:
[0154] Step S100: According to the number of sampling points and the upper and lower limits of the design variables, the initial sampling points are obtained by the optimized Latin Hypercube experimental design method, and the simulation model of the corresponding engineering problem is run to obtain the output value of the simulation model at each corresponding sampling point; The optimized Latin hypercube experimental design method can be carried out according to the existing method.
[0155] Step S200: Construct an approximate model output by the simulation model, and calculate the Gaussian radial basis function coefficient w of the obtained approximate model; where w is a vector representation of Gaussian radial basis function coefficients, and each component is distinguished by different subscripts.
[0156] Step S300: Calculate according to formula (29)
[0157] ψ i j = c i π [ Φ ...
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