I work on how uncertainty is represented and carried through systems, from measurement to decision. My research develops probabilistic methods that keep a system's uncertainty sound as it propagates: scalable variational inference, Bayesian state estimation on manifolds, and proper-scoring diagnostics for whether a model's confidence is warranted.

I am a DDSA Fellow and postdoctoral researcher in the SQUARE group at the IT University of Copenhagen. I completed my PhD with Thomas Hamelryck at the University of Copenhagen.

Current work spans real-time Bayesian filtering for pose estimation, sonar-based SLAM, and theory for mixture flows in variational filtering.

Selected Publications

Ola Rønning, Eric Nalisnick, Christophe Ley, Thomas Hamelryck (2025). ELBOing Stein: Variational Bayes with Stein Mixture Inference. International Conference on Learning Representation.
Lys S. Moreta, Ola Rønning, Ahmad S. Al-Sibahi, Jotun Hein, Douglas Theobald, Thomas Hamelryck (2021). Ancestral Protein Sequence Reconstruction using a Tree-Structured Ornstein-Uhlenbeck Variational Autoencoder. International Conference on Learning Representation.
Ola Rønning, Christophe Ley, Kanti V. Mardia, Thomas Hamelryck (2021). Time-efficient Bayesian Inference for a (Skewed) Von Mises Distribution on the Torus in a Deep Probabilistic Programming Language. IEEE International Conference on Multisensor Fusion and Integration for Intelligent Systems.