Option variable
random_beta_algorithmDefault value: cheng
This is the selected algorithm for simulating random beta variates. Implemented algorithms are cheng, inverse and ratio
cheng, this is the algorithm defined in Cheng, R.C.H. (1978). Generating Beta Variates with Nonintegral Shape Parameters. Communications of the ACM, 21:317-322
inverse, based on the general inverse method.
ratio, based on the fact that if X is a random variable Gamma(a,1) and Y is Gamma(b,1), then the ratio X/(X+Y) is distributed as Beta(a,b).