工程应用中通常用插值和回归(曲线拟合)解决函数表达式描述数据的问题。
Engineering applications, the interpolation and regression (curve fitting) function expression usually are used to describe data to solve the problem.
对回归模型残差进行逆距离权重插值，发现空间回归和传统回归的残差分布具有较高的一致性，并且符合土壤养分分布情况。
Kriging interpolation maps for residuals were drawn. The residuals of classic regression and spatial regression had high consistency, and the distributions were in line with the soil nutrients.
同时以LSSVM回归方式形成包络线，以取代传统EMD中的三次样条插值；
The upper and lower envelopes are constructed by using LSSVM regression instead of spline interpolation in EMD.
同时以LSSVM回归方式形成包络线，以取代传统EMD中的三次样条插值；
The upper and lower envelopes are constructed by using LSSVM regression instead of spline interpolation in EMD.
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