英语释义

• statistical measure of the variance of two random variables measured in the same mean time period

片语

covariance matrix[数] 协方差矩阵

covariance functional协方差泛函数

complex covariance复协方差

covariance function[数] 协方差函数；共变量函数；积差函数

zero covariance[数]

covariance partitioning协方差分割法

covariance principle共变原理

covariance analysis[数] 协方差分析；积差分析；共变量分析

environmental covariance环境协方差

analysis of covariance共分散分析；[数] 协方差分析

covariance localization误差协方差的局地化

covariance components协方差分量

英汉例句

• with the addition of covariance support, that limitation was partially lifted.

  随着协变支持的添加，该限制才得以部分解除。

• one more thing, i said they「re not independent, so we have to talk about the covariance between the returns.

  还有，我说过它们不是相互独立的，因此我们还需要讨论两个收益率的协方差。

• if they tend to move together, when x is high and y is high together at the same time, then the covariance will tend to be a positive number.

  如果x和y同向变动,当x值和y值同时都很大,协方差的结果将会是一个正值

• so, we」re going to have the covariance between r1 and r2, 12 and those are the inputs to our analysis.

  这里有一个r1和r2之间的协方差，你也可以叫它σ12，which，you，can，also，call，σ,这些就是我们分析所需要的信息。

• the eigenvalue of covariance matrix can be used to separate signal from noise.

  利用协方差矩阵的特征值。能实现信号和噪声的分解。

• a positive covariance means that the two move together.

  一个正值的协方差表示两个变量同向变动

• so, the higher the covariance is, generally, the higher--you can see from here-- 2 of the portfolio.

  所以总的来说，你可以从这里看出，协方差越大-,投资组合的σ2越高，the，higher，the，σ

• a full introduction to covariance and contravariance would take too long.

  对协变与逆变的完整介绍要花很长时间。

• covariance is--we「ll call it--now we have two random variables, so cov... i」ll just talk about it in a sample term.

  协方差是...我们有两个随机变量,x和y的协方差是,从样本的角度来说

• statistical analysis of endometrial thickness data was performed by analysis of covariance method, with baseline endometrial thickness as the covariate.

  以开始时的子宫内膜厚度作协变量，对子宫内膜厚度数据进行协变量分析。

• by using the arrays normalized general impedance matrix to express the mutual coupling between the elements, the characteristics of the covariance matrix of the adaptive arrays are analyzed.

  用天线阵归一化广义阻抗矩阵表示单元互耦，分析了考虑单元互耦效应的自适应天线协方差矩阵的特点。

• they「ve moved these tax rates around a lot, so i think that it」s very hard to be sure that we know the expected return, the standard deviation of returns and the covariance of returns--are really.

  他们多次改变税率,因此我认为很难确定,未来的收益标準差是多少going forward what are σ, 即预期收益率,收益标準差,收益协方差分别是多少

• let's put the inputs-- r1 r2 then, we have the standard deviations of the returns of the three assets and we have the covariance between the returns on the three assets.

  ,然后，我们还有三种资产,收益的标準差,我们还有三种资产,两两相互之间的协方差。

• covariance is a measure of how much two variables move together.

  协方差衡量的是两个变量一起变动的情况

• a negative covariance means that they tend to move opposite each other.

  负值的协方差就表示,二者反向变动

• in this paper, covariance and correlativity coefficients are used to describe the correlation of random variable, and a new decision tree construction algorithm is proposed.

  本文引入概率论中描述随机变量之间相互关系的协方差及相关系数的概念，提出了一种新的决策树构造方法。

• on a historical note, c# and vb both support array covariance (out/ienumerable scenario) even though it can lead to runtime errors in contravariant situations (in/iwriter scenario).

  追溯过去，c#和vb都支持数组协变（out/ienumerable情况），尽管在逆变的情况下这会导致运行时错误（in/iwriter情况）。

• in this paper it is explained that relativity principle and covariance requirement were one and the same idea.

  相对性原理就是协变性要求，服从相对性原理就是满足协变性要求。

• an improved measuring method, the so-called eddy covariance method, recently became available.

  最近开始应用的是一种改进的测量方法，所谓的涡度相关法。