二维正态分布

基于二维正态分布的岩土参数Bayes方法优化

Bayes method of optimizing geotechnical parameters based on two-dimension normal distribution

岩土强度参数二维正态分布拟合研究

The Fitting Research of Two-dimension Normal Distribution of Geotechnical Strength Parameters

若X和Y均为两值随机变量或（X，Y）服从二维正态分布，则三种情形等价。

Statements ( I ),( ii ) and ( iii ) are equivalent if X and Y are both taking only two values or ( X , Y ) has bivariate normal distribution .

其次假定股票价格对数与收益率的联合分布f（InP，R）服从二维正态分布，从中确定条件收益率的统计分布特征，进而计算条件VaR值。

Secondly we assume that the union distribution of logarithm of the stock price and its revenue ratio obeys two-dimensional normal distribution , and then confirm the statistical distribution characteristic of condition revenue ratio from it .

给出了实现高精度二维正态分布函数值的算法。

It needs high precise function value of normal distribution .

二维正态分布不同方差小样本检验射击精度方法研究

2-dimension Non-variance Normal Distribution Shoot Precision Test on Few Samples

二维正态分布函数值的计算是估算串联结构体系失效概率上、下限的一项重要内容。

It is an important aspect to compute the two dimensional distribution in estimating the bounds of failure probability of series structures .

给出了多维正态分布与x~2分布的概率性质，讨论了在小样本检验中如何检验同方差的二维正态分布的方差问题。

This paper gives the probability nature of multivariate normal distribution and distribution . Also discussed is how to test variance of 2-dimensional normal distribution .

该方法克服了Davies方法中存在的一些问题，尤其适用于二维非正态分布序列的建模和模拟。

Some limitations existing in the Davies ' method are overcame in this method and it especially suited the modelling and simulating of two dimension .

结构体系可靠度分析中二维标准正态分布函数的近似计算

An approximation to bi-normal probability distribution function in reliability analysis of structural system

最后给出了经验的中国大陆宏观地震震中&速报震中偏离的二维正态概率分布密度函数。

The empirical two-dimensional normal distribution functions for the deviations are presented in the paper .

本文根据概率乘法定理，利用以条件数学期望和方差为参数的一维正态分布近似代替原来的条件分布，从而得出计算二维标准正态分布函数值的近似公式。

Based on multiplication theorem of probability , an effective approximation is presented to the bi-normal distribution with substituting the original conditional distribution by the standard normal distribution of the same expectation and variance .

归纳总结了已经出现的非正态二维联合概率分布模型，如二维威布尔分布、二维对数正态分布、二维冈贝尔分布及二维伽玛分布等。

To summarize two-dimensional non-normal joint distribution in use , such as Bivariate Weibull Distribution , Bivariate Log-normal Distribution , Bivariate Gumbel Distribution , and Bivariate Gamma Distribution .