一阶趋势的OK方法中半方差函数模型选用高斯型的比选用球状和指数型的插值效果相对要好。
Within the method of first-order trend OK, Gaussian semi-variogram model performed better than both the spherical and exponential models.
介绍具有随机设计的一类半参数方差函数模型。
We propose a general semiparametric variance function model in a random design setting.
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