查询词典 unbiased

We first state general linear model, ridge-type estimator and general ridge-type estimator, and the constraint biased estimator. And then, we introduce some basic theory about matrix and some conclusion about the admissibility of estimator in Gauss-Markov model. In the third chapter, we discussion several equivalent characterization of the best linear unbiased estimation, we proved that admissible characterization of admissible of linear estimation is as conditional general ridge-type estimation in general linear model. A necessary and sufficient condition that homogeneous linear estimator is admissible estimator is obtained.

本文首先概述了一般线性模型，岭估计及约束岭估计的发展历史和研究现状，在第二章介绍了矩阵的一些基本知识和可容许性的一些基本结论，第三章讨论了一般线性模型最佳线性无偏估计的几个等价条件，以及线性估计的可容许性特征，得到了一般线性模型的可容许线性估计均具有条件广义岭估计的形式，给出了一个齐次线性估计为可容许估计的充分必要条件。

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。

In addition, they have brazenly sold their reputations for unbiased judgment to the very companies they were standing in judgment upon.

除此之外，他们为了那些被评级的公司，居然厚颜无耻的出卖了自己的信誉。可是，他们完不了。

And in accordance with the distribution of the noise characteristics, such as the use of some other mode of great value, based on the SURE unbiased estimates of the law to carry out adaptive signal denoising.

并根据信号噪声的分布特点，运用其他的一些如模极大值法，基于SURE无偏估计的自适应法来进行信号去噪。

The genetic variations and polymorphisms of six microsatellite loci were analyzed to determine the population structure and breeding progress of BMY and Brahman cattle. The range of polymorphic information content of six loci was 0.524～0.752. The unbiased expected and observed heterozygosity were similar and were 0.7376 and 0.7396,0.6412 and 0.6537 for BMY and Brahman cattle, respectively. The expected heterozygosity was relatively high in the second generation of BMY in inter se breeding, which was congruent with the breeding progress.

对6个牛微卫星座位的遗传变异及多态性分析，以期了解BMY牛和婆罗门牛的群体遗传结构与育成情况。6个微卫星座位的多态信息含量为在0.524～0.752间，BMY牛、婆罗门牛两个群体的平均期望杂合度和观察杂合度值接近，分别为0.737 6和0.739 6，0.641 2和0.653 7，进入横交固定第二世代的BMY牛期望杂合度值较高，这与我们的育种进展相符。

The adjusted coefficient of determination provides such an unbiased estimate in both multiple regression and canonical redundancy analysis.

调整的决定系数提供了针对多元回归和典范冗余分析的无偏估计。

Indeed, even before the discovery of Tatian's "Diatessaron", an unbiased study of Justin's authentic writings had made it clear that the holy doctor used exclusively our canonical Gospels under the name of Memoirs of the Apostles.

其实，即使是才发现tatian的" diatessaron "，是一个不带偏见的研究Justin的正宗著作已明确表示，罗马教廷医生只用於我国典型福音的名义下，在回忆录中的使徒。

It pays off with senators like Trent Lott once telling the Washington Post:"If it hadn't been for Fox, I don't know what I'd have done for the news." He means a right-wing echo chamber pretending to be unbiased.

它不负有心人，与美国一样，洛特曾告诉华盛顿邮报说："如果不是为狐狸，我不知道这是什么我不得不做的消息，"他指右翼回声商会假装能做到不偏不倚。

Then an adaptive, efficient unbiased estimator of Hurst index based on multiresolution wavelet analysis and weighted regression is presented.

针对基于小波的Hurst指数估计方法的自适应问题，结合方差分析给出了一种有效的解决方法，从而提出了自适应的参数估计方法，并且该方法在一般意义上是无偏的。

An adaptive,efficient unbiased estimator of Hurst index based on the lifting scheme for wavelet transform and correlation coefficient is presented.

对局域网和广域网上大量突发网络流量的分析结果表明，网络流量普遍存在着自相似性和长相关性，其中赫斯特指数是表征网络流量突发性的重要参数。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。