cupy.random.rayleigh¶

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

Rayleigh distribution.

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

\[f(x) = \frac{x}{\sigma^2}e^{\frac{-x^2}{2-\sigma^2}}, x \ge 0.\]

Parameters:	scale (array) – Parameter of the rayleigh distribution \(\sigma\). 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 rayleigh distribution.
Return type:	cupy.ndarray