查询词典 covariance

In chapter three, using the special structure of the covariance matrix, we present a fast high resolution method based on QR decomposition.

探讨了利用QR分解得到信号与噪声子空间的可能性，提出了一类基于QR分解的高分辨快速算法及其改进型。

By whitening the covariance matrix of flat ambiguity, correlation between ambiguity components, the number of local extrema of cost function is reduced.

通过白化处理模糊度，减少模糊度搜索中指标函数的局部极值点，采用适当的编码和遗传操作使得在种群个体较少的情况下避免搜索陷入早熟。

Both of them use a proportion of training instances for covariance matrix computation. The instance selection of one method is based on the included angle defined by testing and training instances; that of the other method is according to the hyperplanes determined by paired-class centers.

这两种方法皆只使用部份的训练资料来计算共变异矩阵，其中一种方法的资料选取方式是以验证和训练资料所定义的夹角为基础，而另一种方法下的资料选取则是根据两两群体中心所决定的超平面。

Usually, the mean covariance between original and filtered data was used to evaluate the power of NR.

以前，人们常用除噪前后的数据值之间的均方差来评价数据除噪的效果。

To date, micrometeorology approach based on eddy covariance technique has been regarded as the only direct measurement of material and energy fluxes between atmosphere and biosphere, and has been the key technology of the international flux network.

截止目前，利用微气象学原理的涡度协方差技术是唯一能直接测定生物圈与大气间物质与能量通量的标准方法，成为国际通量观测网络的主要技术。

This demonstrates that it is necessary to carry out variance-covariance component estimation for the double-differenced GPS observables.

结果 两种方法估计的方差－协方差阵都与常用的先验协方差阵有明显区别；两种方法估计计算结果非常接近。

Since many difficulties exist in the design of equivalent weight with correlated observations, the concept of equivalent variance-covariance is presented.

鉴于相关等价权的构造非常困难，提出了等价方差-协方差概念。

This research bases on Dennis Pelletier's (2006)"Regime Switching Dynamic Correlation" model to estimate the covariance matrix through dividing the correlation into three regimes.

中文摘要本篇论文采用Denis Pelletier (2006)所提出的状态转换之动态相关系数模型，将资产报酬之相关系数分为三个状态，以估计其共变异数矩阵。

I smile at your play with that little bit of a broken twig.

我微笑着看你玩那一段小小的树枝。

They may be produced for almost any shaft angle.

他们可能在制作中几乎任何一个轴角。