BEAST v2.7.8 Documentation: beast.base.inference.distribution.Dirichlet

BEASTObject that performs calculations based on the State.
A class that describes a parametric distribution, that is, a distribution that takes some parameters/valuables as inputs and can produce (cumulative) densities and inverse cumulative densities.
Dirichlet distribution. p(x_1,...,x_n;alpha_1,...,alpha_n) = 1/B(alpha) prod_{i=1}^K x_i^{alpha_i - 1} where B() is the beta function B(alpha) = prod_{i=1}^K Gamma(alpha_i)/ Gamma(sum_{i=1}^K alpha_i}.

Inputs:

alpha, sum, offset