cupy.random.gumbel¶

cupy.random.gumbel(loc=0.0, scale=1.0, size=None, dtype=<class 'float'>)[source]¶

Returns an array of samples drawn from a Gumbel distribution.

The samples are drawn from a Gumbel distribution with location loc and scale scale. Its probability density function is defined as

\[f(x) = \frac{1}{\eta} \exp\left\{ - \frac{x - \mu}{\eta} \right\} \exp\left[-\exp\left\{-\frac{x - \mu}{\eta} \right\}\right],\]

where \(\mu\) is loc and \(\eta\) is scale.

Parameters

loc (float) – The location of the mode \(\mu\).
scale (float) – The scale parameter \(\eta\).
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 and numpy.float64 types are allowed.

Returns

Samples drawn from the Gumbel distribution.

Return type

cupy.ndarray