估計(jì)量
An estimator is a random variable. 估計(jì)量是一個(gè)隨機(jī)變量。
In fact, we can choose the estimator of which the variance estimation is smaller. 在實(shí)際應(yīng)用中,本文也提出了通過比較方差估計(jì)作為選取估計(jì)量的準(zhǔn)則。