# cupy.random.zipf¶

cupy.random.zipf(a, size=None, dtype=<class 'int'>)[source]

Zipf distribution.

Returns an array of samples drawn from the Zipf distribution. Its probability mass function is defined as

$f(x) = \frac{x^{-a}}{ \zeta (a)},$

where $$\zeta$$ is the Riemann Zeta function.

Parameters
• a (float) – Parameter of the beta distribution $$a$$.

• 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.int32 and numpy.int64 types are allowed.

Returns

Samples drawn from the Zipf distribution.

Return type

cupy.ndarray