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在残余函数的半变异函数存在时,为最佳地估计漂移函数,文献[2]提出了两个前提条件。本文指出,这两个条件不是相互独立的。当S≠0时,条件sum from i=1 to k (λ_s~i=0)是条件f~0(x)=1的自然结果。本文还指出sum from i=1 to k (λ_s~i=0)这个无法验证的条件是多余的。本文关于漂移函数最佳估计的推导只需条件f~0(x)=1。
In the presence of the semivariogram of the residual function, two preconditions are proposed in [2] for the best estimation of the drift function. This article points out that these two conditions are not independent of each other. When S ≠ 0, the condition sum from i = 1 to k (λ_s ~ i = 0) is a natural result of the condition f ~ 0 (x) = 1. We also point out that the unverifiable condition of sum from i = 1 to k (λ_s ~ i = 0) is superfluous. This article on the best estimate of the drift function is derived only conditional f ~ 0 (x) = 1.