variance of mean的意思|示意

Then, the best threshold value is calculated basing on the gradient magnitude mean and the variance of the image.

再由图像的梯度幅值均值和方差计算出图像的最佳阈值。

This paper introduces the approximate calculation of real number's or of vector parameter positive function's posterior mean, variance and forecasting density in mathematical statistics.

文章介绍了数理统计中实数或向量参数的正函数的后验平均、方差和预测密度的近似计算。

The equations are solved by finite difference method and the mean and variance of pressure head are determined from its random expression.

通过摄动方法得到一系列关于水头展开式的偏微分方程，用有限差分法进行求解，获得了压力水头的随机描述，并计算其均值和方差。

Using mean, variance conceptions in the definition of the sliding mode reachability can better reflect the stochastic characteristics of the systems.

运用均值、方差概念来定义的滑动模可达性，更能反映系统的随机特征。

The purpose of this paper is to summary the literatures on tests of portfolio mean-variance efficiency in the framework of classical statistics and Bayesian inference.

评述了应用经典统计学和贝叶斯推断检验资产组合均值方差有效性的文献，提出了这些方法在我国应用-的可能性。

The proposed method analyses local image statistics and then matches the local histograms of two images to be fused by applying mean or mean variance matching normalization functions.

该方法分析了局部影像统计特性，应用均值或均值—方差匹配正态函数，对要融合的两幅影像局部直方图进行匹配。