Selection of optimal knot point and best geographic weighted on geographically weighted spline nonparametric regression model.

Partial significance test of GWSNR model parameters The formula of the hypothesis test of partial significance of GWSNR model parameters is H 0 : β p j ( u i , v i ) = 0 and δ p , m + h ( u i , v i ) = 0 H 1 : There is at least one β p j ( u i , v i ) ≠ 0 or δ p , m + h ( u i , v i ) ≠ 0 This test uses a significance level α = 0.05 and rejection criteria H 0 is rejected if p-value < α .

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