A Genton's estimator based variogram was applied to analyse the concentration of Cu,Zn,Pb,Cd,As,Se and Hg in soils at a contaminated site.
与Matheron估计[量]相比,该研究得到的变异函数具有更小的块金效应,说明Genton估计[量]能够消除或减弱特异值对变异函数的影响。
Improving methods to calculate estimator minimum variance of the finite population mean;
总体均值估计[量]最小方差的改进
The applicable judgement methods for uniformity of estimator;
估计[量]一致性的适用判别法
An Analysis on the Convergence Rate of the Distribution of OLSand GLS Estimators;
回归系数OLS,GLS估计[量]分布的收敛速度分析
This article extends the moment estimator of the extreme-value index and proposes an extended moment estimator asIt s strong and weak consistency is proved and asymptotical distribution is derived.
本文对极值指数的矩估计[量]给以推广，提出一种新的估计[量]——推广的矩估计[量]： γ_(k，n)=M_n~(1)+1-(r-1)[r(1-(M_n~(1)M_n~(r-1))/(M_N~(r))]~(-1)主要证明了该估计[量]的相合性，得到了其渐近分布。