病态阵

To overcome this problem, many authors proposed some biased estimators to alternate the least squared estimator. In some sense, these estimators improved the least squared estimator.However, the biased estimator was apart from the true value of parameter, so some statisticians proposed the notation of the almost unbiased estimator.

人们发现设计阵的"病态"是导致Stein现象的根源，为了克服共线性性，人们在文献中相继提出了许多有偏估计来替代最小二乘估计，这些估计从某种意义上讲，都改进了最小二乘估计。

While dealing with the multicollinearity of design matrix X , the ordinary least squares estimation is always helpless.

基于最小二乘法处理病态阵X共线性问题上的不足，线性有偏估计是改进最小二乘估计最直接的方法。

In Chapter 2, we introduce the new root power estimator of regression coefficients B when the design matrix present ill-condition.

具体工作如下：(1)针对设计阵A与C至少有一个病态时的情况提出新根方估计？

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。