About

My name is Tim Radtke. I’m based in Berlin and build forecast tooling for companies to automate their operations. I have done so for both medium-sized ecommerce as well as DAX blue chip companies.

Reach out via email: [email protected]

Through a past project I have acquired a surprising amount of knowledge on transfer pricing (if that’s what you need).

I’ve maintained this blog since 2015. A post on Modeling Short Time Series with Prior Knowledge, that I also presented at satRday Berlin 2019, got popular and still makes the rounds. Though today it feels more like a youthful jolly. I write about “sample paths” whenever I get the opportunity. Read this post if that term doesn’t ring a bell.

The name Minimize Regret derives from the multi-armed bandit literature that I wrote my thesis on.

When I’m not working, I like to go for a walk and watch birds. I also enjoy burning two hours of my Sunday watching cars go round in a circle without overtaking. And, as you might be able to tell, I’m a sucker for bold neo-grotesque typefaces.

Software

Some current personal software projects include…

Threedx

Threedx provides an interface for interpretable probabilistic forecasts that puts you in control. Learn more in Threedx’s documentation and install it from Github.

Shuffler

Use Shuffler to turn quantiles of marginal distribution forecasts returned by any model into sample paths from a joint forecast distribution. Install Shuffler from Github.

Papers

In October 2026, I started to keep track of papers I reference on this blog. To be clear: These are not papers I authored (far from it). Instead, consider it the bookshelf powering this blog, complete with dog ears and post-its sticking out.

But I am assailed with my own ignorance and inability. I’ll just have to work from a background of these. Honesty. If I can keep an honesty it is all I can expect of my poor brain.

John Steinbeck (1938)