I am an ELLIS PhD candidate at the University of Amsterdam working with Wilker Aziz, Barbara Plank and Raquel Fernández.
I am interested in understanding how large language models represent uncertainty, and if we can disentangle uncertainty that arises from the data (e.g., underspecified, subjective or ambiguous language) from uncertainty related to a model (e.g., lack of knowledge or reasoning). Ultimately, I think that uncertainty should power better decision-making.
I am part of the Dialogue Modeling Group in Amsterdam and MaiNLP at LMU in Munich. Previously, I interned at the Allen Institute for Artificial Intelligence in Seattle and spent 2.5 years as ML engineer at DPG Media working on large scale news recommendation.
News
Blogposts
Occasionally I write blogposts. You can find them below.
Thoughts on using AI for scientific research and software engineering
As a PhD candidate doing AI research, and a former ML engineer, I am not...
Posted by
Joris Baan
on
July 09, 2025 ·
10 mins read
Designing, Building & Deploying an AI Chat App from Scratch (Part 2)
Cloud Deployment and Scaling
Posted by
Joris Baan
on
January 14, 2025 ·
34 mins read
Designing, Building & Deploying an AI Chat App from Scratch (Part 1)
Microservices Architecture and Local Development
Posted by
Joris Baan
on
January 14, 2025 ·
31 mins read
Implementing a Transformer From Scratch
7 Things You Might Not Know About the Transformer
Posted by
Joris Baan
on
March 25, 2022 ·
18 mins read
A Comprehensive Introduction to Bayesian Deep Learning
Bridging the Gap Between Basics and Modern Research
Posted by
Joris Baan
on
March 02, 2021 ·
28 mins read