Julia:生成具有受限范围的正态分布随机数

Question

问题:如何在Julia的高斯分布中在区间[0,1]中生成随机数？

我收集randn是生成正态分布随机数的方法,但文档对如何指定范围的描述是非常不透明的.

Answer 1

使用Distributions包.如果您还没有:

using Pkg ; Pkg.add("Distributions")

然后:

using Distributions
mu = 0    #The mean of the truncated Normal
sigma = 1 #The standard deviation of the truncated Normal
lb = 0    #The truncation lower bound
ub = 1    #The truncation upper bound
d = Truncated(Normal(mu, sigma), lb, ub)  #Construct the distribution type
x = rand(d, 100) #Simulate 100 obs from the truncated Normal

或全部在一行:

x = rand(Truncated(Normal(0, 1), 0, 1), 100)