主成分估计是Massy在1965年提出的，它是回归系数参数的一种线性有

主成分估计是Massy在1965年提出的，它是回归系数参数的一种线性有偏估计，同其它有偏估计，如岭估计等一样，是为了克服最小二乘估计在设计阵病态时表现出的不稳定性而提出的。

結果 (英文) 1:

Principal components estimate proposed by Massy in 1965, it is a biased linear estimation of parameters of regression coefficient, like other biased estimates, such as Ridge, is to overcome the least squares estimation in the design matrix is sick with instability and posed.

結果 (英文) 2:

Main component is estimated Massy in 1965 proposed, which is a linear regression coefficient parameters biased estimate, with other biased estimate, such as the ridge estimation, is designed to overcome the least squares estimation matrix exhibited when sick instability and raised.

結果 (英文) 3:

The principal component estimation is proposed by Massy in 1965, it is a linear regression coefficient of biased estimate of the parameters, such as with other biased estimation, ridge estimation and so on, is put forward in order to overcome the least squares estimation showed in the design matrix is ill conditioned instability.