# 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