I am Dennis Ulmer, a postdoctoral researcher in natural language processing and machine learning at the Institute for Logic, Language and Computation (ILLC) at the University of Amsterdam (UvA), where I am working with Prof. Ivan Titov.

My current research interests include uncertainty quantification and communication methods with application to NLP, better experimental design, generalization, and many more!

Questions or ideas for collaborations? Message me via the options on the top right!

🎉 News

• 04/08/2026: I will be at EMNLP 2026 in Budapest to present a number of papers (see below)! Especially happy to see the works by my former Master students Athina and Ivo accepted. See you there for some lángos 👋🏻
  • "Shared Doubt: Zero-Shot Cross-Lingual Confidence Estimation for Language Models" with Athina Kyriakou and Ivan Titov (Main, poster; also at the UncertaiNLP Workshop) – October 25, 16:00-17:30, Hall H, Session 4, Poster Session B
  • "Anthropomimetic Uncertainty: What Verbalized Uncertainty In Language Models Is Missing" with Alexandra Lorson, Ivan Titov and Christian Hardmeier (TACL, oral) – October 26, 11:00-12:30, G4-6, Session 6: Human-Centered NLP and Human-AI Interaction
  • "Calibration Is Not Enough: Evaluating Confidence Estimation Under Language Variations" with Yuxi Xia, Terra Blevins, Yihong Liu, Hinrich Schütze and Benjamin Roth (UncertaiNLP Workshop, poster) – October 29
  • "Probing for Knowledge Attribution in Large Language Models" with Ivo Brink and Alexander Boer (BlackboxNLP Workshop, oral + poster) – October 29
• 06/06/206: At ACL 2026 in San Diego, my PhD thesis "On Uncertainty in Natural Language Processing" was the runner-up to the ACL 2026 dissertation award!