Python 中的 sympy.stats.NormalGamma()函数
原文:https://www.geeksforgeeks.orgpy-stats-normal gamma-python 中的函数/
借助于方法，我们可以创建一个具有多元正态伽马分布的二元联合随机变量。
**Syntax: ** sympy.stats.NormalGamma(syms, mu, lamda, alpha, beta)
**Parameters:**
**syms:** the symbol, for identifying the random variable
**mu:** a real number, the mean of the normal distribution
**lambda:** a positive integer
**alpha:** a positive integer
**beta:** a positive integer
**Returns: ** a bivariate joint random variable with multivariate Normal gamma distribution.
例 1 :
蟒 3
# import sympy, NormalGamma, density, symbols
from sympy.stats import density, NormalGamma
from sympy import symbols, pprint
y, z = symbols('y z')
# using sympy.stats.NormalGamma() method
X = NormalGamma('X', 0, 1, 2, 3)
norGammaDist = density(X)(y, z)
pprint(norGammaDist)
