cupy.random.dirichlet¶
-
cupy.random.
dirichlet
(alpha, size=None, dtype=<class 'float'>)[source]¶ Dirichlet distribution.
Returns an array of samples drawn from the dirichlet distribution. Its probability density function is defined as
\[f(x) = \frac{\Gamma(\sum_{i=1}^K\alpha_i)} {\prod_{i=1}^{K}\Gamma(\alpha_i)} \prod_{i=1}^Kx_i^{\alpha_i-1},\]Parameters: - alpha (array) – Parameters of the dirichlet distribution \(\alpha\).
- size (int or tuple of ints) – The shape of the array. If
None
, a zero-dimensional array is generated. - dtype – Data type specifier. Only
numpy.float32
andnumpy.float64
types are allowed.
Returns: Samples drawn from the dirichlet distribution.
Return type: See also