4 papers
Robust Bayes Acts under Prior Perturbations: Contamination, Stability, and Selection Paths
Christoph Jansen, Georg Schollmeyer
This paper develops a quantitative framework to assess the robustness of Bayes-optimal decisions in finite decision problems under model uncertainty. We introduce two complementary…
Empirical Decision Theory
Christoph Jansen, Georg Schollmeyer, Thomas Augustin +1
Analyzing decision problems under uncertainty commonly relies on idealizing assumptions about the describability of the world, with the most prominent examples being the closed wor…
Consensus in Motion: A Case of Dynamic Rationality of Sequential Learning in Probability Aggregation
Polina Gordienko, Christoph Jansen, Thomas Augustin +1
We propose a framework for probability aggregation based on propositional probability logic. Unlike conventional judgment aggregation, which focuses on static rationality, our mode…
Contributions to the Decision Theoretic Foundations of Machine Learning and Robust Statistics under Weakly Structured Information
Christoph Jansen
This habilitation thesis is cumulative and, therefore, is collecting and connecting research that I (together with several co-authors) have conducted over the last few years. Thus,…