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std::student_t_distribution

STD：学生[医]T型[医]分布

Defined in header ​​
template< class RealType = double > class student_t_distribution;​(since C++11)

产生随机浮点值x，按概率密度函数分布：p%28 x n%29=

一

*。

辛nπ

··

Γ( n+1 2 )n+12

n+1

二

Γ%28 n 2%29 n2

n

二

·准

二次

亚单位1+

X2

*。

n

二次

二次

二...-

n+1

*。

二

二次

其中，n称为自由度估计平均给定n+1独立测量值的未知正态分布值，每一次都有未知标准差的加性误差，如在物理测量中。或者，当估计具有未知标准差的正态分布的未知均值时，给n+1样本。

std::student_t_distribution满足…的所有要求RandomNumberDistribution...

模板参数

RealType-The result type generated by the generator. The effect is undefined if this is not one of float, double, or long double.

成员类型

Member typeDefinition
result_typeRealType
param_typethe type of the parameter set, see RandomNumberDistribution.

成员函数

(constructor)constructs new distribution (public member function)
resetresets the internal state of the distribution (public member function)

世代

运算符%28%29在分布%28公共成员函数%29中生成下一个随机数。

特征

n返回n个分布参数%28自由度%29%28公共成员函数%29

Param获取或设置分布参数对象%28公共成员函数%29

min返回最小潜在生成值%28公共成员函数%29

MAX返回最大潜在生成值%28公共成员函数%29

非会员职能

operator==operator!=compares two distribution objects (function)
operator<<operator>>performs stream input and output on pseudo-random number distribution (function template)

例

外部链接

学生%27s t-分布。来自MathWorld的一个Wolfram Web资源。

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