查询词典 lag covariance

The paper studies the auto-covariance estimation of Gamma distribution by using the asymptotic behavior of student U -statistic,gives the large sample interval estimation for the scale parameter,and carries out the computing simulation according to the method of random simulation.

利用学生氏U－统计量的渐近性质，研究伽玛分布的自协方差估计，同时给出了尺度参数的大样本区间估计，并采用随机模拟的方法进行计算模拟

In terms of covariance analysis, the elliptical splat of sample point is then determined on its tangent plane.

针对点模型的快速高质量绘制问题，提出一种单遍绘制算法。

Estimation of parameters for general liner functional model with singular covariance. First, the Rao decomposition of the sample variance and the known singular measure error variance are presented and then the square measure error with singular variance and the standardized condition are got.

首先讨论了样本协方差与已知的奇异度量误差方差的Rao分解，给出了含有奇异方差广义逆的二次度量误差和模型的标准化条件，证明了二次度量误差与广义逆的选取无关。

In the case of 〓unknown,this dissertation derived the exact distribution of related statistics,and thenproposed the multivariate covariance control charts:the A chart and the 〓 chart based onthe sample generalized variance and the maximum and the minimum eigenvalues.

当分布参数〓未知时，本文通过推导有关统计量的精确分布，建立了基于样本广义方差和最大、最小特征根的多元协方差控制图—A图和〓图，为实际应用奠定了基础。

Covariance, correlation, linear combinations of random variables, sampling distribution of the mean, confidence intervals for means and proportions.

协方差，相关性，线性组合的随机变量，抽样分布的意思是说，置信区间的手段和比例。

Nowadays, the Eddy Covariance system and the Large Aperture Scintillometer are the main instruments measuring surface fluxes. The former is point observation and can observe hundreds of meters and the latter can observe area average fluxes in the scale of hundreds of meters to ten kilometers.

目前应用较为广泛的通量测量技术有涡动相关仪和大孔径闪烁仪，前者是单点观测，观测范围通常只有几百米；后者近年来得到长足的发展，可以观测从几百米到十几公里尺度上的区域湍流通量。

The algorithms estimate the DOA of the broadband distributed source fron the secondary diagonal elements of the covariance matrices generated from every frequency domain of the received broadband signal s, thus avoiding unwrapping of phases.

该类算法首先将阵列接收的宽带信号变换到频率域，然后对于每个频率形成阵列接收信号协方差阵，最后由该协方差阵的次对角线元素估计宽带分布源的到达角，其主要特点是避免了相位展开。

Singular value decomposition of observability matrix is used to obtain an optimal 2-position alignment, the result is the same as that of covariance analysis.

采用奇异值分解方法对捷联惯导系统静基座下的多位置对准过程中最优位置的选择进行了分析，其结果与协方差分析的结果相同。

For the singular spectrum analysis of time series, a method of constructing covariance matrix by using forth order cumulant is proposed. The method could restrain the Gaossian noise and symmetrical distributed noise mixed with chaotic signals.

对于时间序列的高阶奇异谱分析，提出了一种利用四阶累积量函数构造协方差矩阵的方法，该方法从理论上能有效地抑制叠加在混沌信号中的高斯噪声和对称分布噪声对重构结果的影响。

Under Etropy loss, this new estimate of the covariance matrix is its spectral decomposition estimate.

同时，我们证得：在一些模型中，在Etropy损失下，新估计的风险函数比其谱分解估计，ANOVAE和MINQUE的风险函数小。

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。