统计学上,分布是指一组值及其对应的概率。 分布函数(distribution function)与 CDF(cumulative distribution function) 是一个概念。 CDF 完成的映射是,R→[0,1]: FX(x)=P(X≤x) 注意一些数学记号(P,p)的写法: F(x)=FX(x)=P(X≤x)=∑xi≤xP(X=xi)=∑xi≤xp(xi) 3. cdf 右连续性的理解 从...
PDF: P.D.F.(Probability Density Function) CDF: C.D.F.(Cumulative Distribution Function) 泊松分布 与 二项分布 若XB(n,p), 当很大而很小很大而很小n很大而p很小,λ=np时, 二项分布可用P.D.(Poisson Distribution)近似表示。 即Cnkpk(1−p)(n−k)=λkk!e−λ P.D.(Poisson Distribution...
1) Probability density function 概率密度分布函数 1. Probability density function(PDF) of mixing fraction as a type of "clipped Gauss" is used to predict the effects of non-equilibrium on turbulent diffusion flames. 并采用假定PDF的方法,选取截尾式高斯分布的概率密度分布函数,将其与Flamelet结构相结合...
先转成累积分布函数(Cumulative Distribution Function)F(x) = P(X <= a),再求其反函数后即可使...
1)probability distribution function概率分布函数 1.Then,the probability distribution functions of the streamwise and wall-normal velocity fluctuations were obtained and compared with the corresponding normal distributions.在此基础上,获得了流向和垂向脉动速度的概率分布函数,并运用假设检验,分析了其与正态分布的...
1)Fatigue life probability distribution function(PDF)疲劳寿命概率分布函数 2)Distribution of the fatigue life疲劳寿命分布 英文短句/例句 1.The Confidence Intervals for the Scale Parameter of the Birnbaum-Saunders Fatigue Life DistributionBirnbaum-Saunders疲劳寿命分布尺度参数的区间估计 2.Analysis of the effe...
(probability。。。⾼斯分布(Gaussian Distribution)的概率密度函数(probability density function)对应于numpy中:numpy.random.normal(loc=0.0, scale=1.0, size=None)参数的意义为:loc:float 此概率分布的均值(对应着整个分布的中⼼centre)scale:float 此概率分布的标准差(对应于分布的宽度,scale越...
实际上,将离散和连续概率分布以近乎类似的方式表达是完全可行的,我们在此引入概率分布函数(Probability Distribution Functions, PDF): A probability distribution function gives a mathematical way of showing how probabilities vary for a given system. As a mathematical tool, they allow use to easily obtain va...
基于Copula函数的广东北江流域极端降水指标概率分布特征 Probability Distribution Behaviors of Extreme Precipitation Indices Based on Copula Function in Guangdong Beijiang River Basin.pdf 2015-06-18上传 基于Copula函数的广东北江流域极端降水指标概率分布特征 Probability Distribution Behaviors of Extreme Precipitation ...
利用least-square参数估计法与Copula函数计算联合概率分布 (matlab code)(The joint probability distribution (Matlab, code) is calculated by using the least-square parameter estimation method and the Copula function) % using least-square parameter estimation method and Copula function to calculate joint ...