Julia：生成范围受限的正态分布随机数

Question

Question: How can I generate a random number in the interval [0,1] from a Gaussian distribution in Julia?

我知道 randn 是生成正态分布随机数的方法，但是文档对如何指定范围的描述非常不透明。

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

或全部在一行中：

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

Julia：生成范围受限的正态分布随机数

Julia: Generate normally distributed random number with restricted range

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