In the second chapter a kind of generalized linear biased estimator (k) and a kind of nonlinear biased estimator (k1,k2) were brought forward based on the smallest MSE.

• 本文第二章以使均方误差达到最小为出发点，提出了一类广义的线性有偏估计(k)和一类非线性有偏估计(k_1,k_2)。