Torsten Wörtwein is a Ph.D. student in Language Technologies Institute. His research interests include affective computing, multimodal behavior analysis, and healthcare analytics with a focus on symptoms of depression and psychotic disorders. He is currently focusing on emotion recognition and on technical challenges including uncertainty estimation and personalization. Previously, he worked on public speaking anxiety and public speaking performance assessment as well as on several computer vision projects. He received his B.Sc. and M.Sc. in Informatics from the Karlsruhe Institute of Technology in Germany.