numpy.random.RandomState.beta

RandomState.beta(a, b, size=None)

The Beta distribution over [0, 1].

The Beta distribution is a special case of the Dirichlet distribution, and is related to the Gamma distribution. It has the probability distribution function

where the normalisation, B, is the beta function,

It is often seen in Bayesian inference and order statistics.

Parameters :

a : float

Alpha, non-negative.

b : float

Beta, non-negative.

size : tuple of ints, optional

The number of samples to draw. The ouput is packed according to the size given.

Returns :

out : ndarray

Array of the given shape, containing values drawn from a Beta distribution.