a tumblelog
18 Jan 2020

A Sober Look at Bayesian Neural Networks

Proponents of Bayesian neural networks often claim that trained BNNs output distributions which capture epistemic uncertainty. Epistemic uncertainty is incredibly valuable for a wide variety of applications, and we agree with the Bayesian approach in general. However, we argue that BNNs require highly informative priors to handle uncertainty. We show that if the prior does not distinguish between functions that generalize and functions that don’t, Bayesian inference cannot provide useful uncertainties. This puts into question the standard argument that “uninformative priors” are appropriate when the true prior distribution is unknown.

Source: A Sober Look at Bayesian Neural Networks, an article by Jacob Buckman.

Iron Gold

In a fearsome new world where Obsidian pirates roam the Belt, famine and genocide ravage Mars, and crime lords terrorise Luna, it's time for Darrow and a cast of new characters from across the solar system to face down the chaos that revolution has unleashed.

In the evening I started in Iron Gold, the fourth book in the Red Rising series by Pierce Brown. I read the first 3 books some time ago so it took me some effort to get into this book. From the previous three I liked the first book, Red Rising, the most.