[acqq]

The article is not about randomness in general, once one reads the whole. It's just the title and the longish intro that can mislead.

It's about:

https://arxiv.org/abs/2003.03830

"The Fast Loaded Dice Roller: A Near-Optimal Exact Sampler for Discrete Probability Distributions"

"Empirical evaluations on a broad set of probability distributions establish that FLDR is 2x-10x faster in both preprocessing and sampling than multiple baseline algorithms, including the widely-used alias and interval samplers. It also uses up to 10000x less space than the information-theoretically optimal sampler, at the expense of less than 1.5x runtime overhead."