Dennis Prak

Inventory Control & Demand Forecasting

About me

Welcome to my personal web page. I am a postdoctoral researcher, employed by the University of Groningen in The Netherlands, from which I also hold a PhD degree, and visiting the Technical University of Munich in Germany. My main research interests are data-driven inventory control and logistics in the broader sense, and especially the interface between inventory control and demand forecasting.

Did you know that when you estimate future demand based on short or even medium long histories of previous observations, you are facing large errors that are not accounted for by the standard inventory rules? This leads to understocking and severe underachieving of customer service. Two of my previous research papers analyze and show how to solve this issue.

In my current project "Adaptive data-driven inventory control for dynamic supply chains", funded via a Rubicon grant of the Netherlands Organization for Scientific Research (NWO), I combine classical inventory theory with recent advances in machine learning to leverage all available data, find superior inventory policies, and ultimately reduce inventories without sacrificing service. I am furthermore team leader of the TUM IGSSE funded project "Integrated learning and optimization for mobility and transportation services", a collaboration between TU Munich and Denmark University of Technology.

Next to research, I particularly enjoy teaching to students of various programs at the BSc and MSc level. In the academic year 2019-2020 I teach the MSc courses Introduction to Supply Chain Management (TUM Asia) and Inventory Management (TUM School of Management).

In my spare time, I am a private pilot of light aircraft (Cessna 172). My home airport in The Netherlands is Groningen Airport Eelde (EHGG), and in Bayern I fly from Flugplatz Jesenwang (EDMJ).

You can find me on LinkedIn, ResearchGate, or Google Scholar, or visit my staff pages at the University of Groningen and the Technical University of Munich. You can reach me by e-mail at For more details, see the contact page.

The Cessna 172N on which I made most of my flying hours so far