Talks
Semi-scientific talks
Stop data in Europe - Availability and Quality, Vienna (Austria), October 2025
Open Transport Conference
Wo bitte geht’s denn hier zum Bus? Ein Blick in und hinter die Auskunftssysteme deutscher Verkehrsbetriebe, Zwickau (Germany), June 2025
Bürgerakademie, slides (in German)
PTSA - Public Transport Stop Analysis for OSM, online, May 2025
OpenTransportMeetup, slides (in German)
(Tool-)Freiheit im E-Assessment. Weniger ist mehr!, Mittweida (Germany), March 2025
Netzwerktreffen Mathemathik/Pysik und E-Learning, slides (in German)
VeriBus – Verifikation und Korrektur von Haltdaten im ÖPNV mittels KI-gestützter Luftbildauswertung, online, February 2025
Auftakttreffen VeriBus-Projekt, slides (in German)
Jupyter für sächsische Hochschulen mit Ananke with Konrad Schöbel and Marcus Wittig, Dresden (Germany), September 2023
Netzwerktreffen Mathemathik/Pysik und E-Learning, slides (in German)
Demonstration von E-Assessment-Konzepten durch öffnung etablierter LMS für externe Tools with Konrad Schöbel and Marcus Wittig, Leipzig (Germany), September 2023
Workshop on E-Learning, slides (in German)
Jupyter’s Friends: Ausfallsichere digitale Lehrmaterialien mit freien Tools und Infrastrukturen, Dresden (Germany), March 2023
Netzwerktreffen Mathemathik/Pysik und E-Learning, slides (in German)
Demonstration von E-Assessment-Konzepten durch Öffnung etablierter LMS für externe Tools, Görlitz (Germany), September 2022
Workshop on E-Learning
*Official speech at the awards ceremony of 52. Saxon Mathematics Olympiad, Chemnitz (Germany), 2013
52. Saxon Mathematics Olympiad
Scientific talks
State of the Map Europe, November 2025
Dundee (Scotland)
“Visualization and analysis of OSM’s public transport stop data with PTSA
and ML based comparison to stop locations in aerial imagery (VeriBus project)”
with Marcus Wittig , slides
Applied Inverse Problems Conference, September 2023
Göttingen (Germany)
“Chances and limitations of machine learning approaches to inverse problems”
Workshop “Mathematics in Research and Teaching”, September 2019
Schlosshotel Eyba (Germany)
“Laplace DLTS for perovskite solar cells”
Applied Inverse Problems Conference 2019, July 2019
University of Grenoble (France)
“Regularization of quadratic inverse problems: convergence rates and numerical results”
Colloquium on Applied Mathematics, June 2018
Georg-August-Universität Göttingen (Germany)
“Sparsity promoting regularization without sparsity”
Conference “Inverse Problems: Modeling & Simulation”, May 2018
Cirkewwa (Malta)
“Variational source conditions in Banach spaces”
Applied Inverse Problems Conference 2017, May-June 2017
Zhejiang University, Hangzhou (China)
“Deautoconvolution and quadratic isometries”
“Convergence rates for l1-regularization without source/injectivity-type assumptions”
Symposium “Chemnitz Symposium on Inverse Problems”, September 2016
Chemnitz University of Technology (Germany)
“Convergence rates for l1-regularization without injectivity-type assumptions”
Conference “Inverse Problems: Modeling & Simulation”, May 2016
Liberty Hotels Lykia Ölündeniz (Turkey)
“Sparsity promoting regularization without sparsity assumption”
Applied Inverse Problems Conference 2015, May 2015
University of Helsinki (Finland)
“The quadratic structure of autoconvolution problems”
Chemnitz-Zagreb Workshop on Harmonic Analysis for PDE, Applications, and related topics, July 2014
Chemnitz University of Technology (Germany)
“From inverse problems to conditional stability”
Conference “Inverse Problems: Modeling & Simulation”, May 2014
Liberty Hotels Lykia Ölündeniz (Turkey)
“Regularization of autoconvolution equations and other ill-posed problems
of quadratic structure”
Workshop “International Workshop on Inverse Problems and Regularization Theory”, September 2013
Integrating the Chemnitz Symposium on Inverse Problems on Tour
Fudan University Shanghai (China)
“Convergence rates for l1-regularization without sparsity assumption”
Symposium “Chinese-German Symposium on Inverse Problems”, October 2012
Saarland University (Germany)
“Recent developments in convergence rate theory for Banach space regularization”
Conference “Inverse Problems: Modeling & Simulation”, May 2012
Lykiaworld & Linksgolf Antalya (Turkey)
“Interpretation of variational smoothness assumptions in convergence rate theory”
Seminar of workgroup “Imaging”, November 2011
University of Münster (Germany)
“Convergence rates for Tikhonov regularization with Poisson distributed data”
Symposium “Chemnitz Symposium on Inverse Problems”, September 2011
Chemnitz University of Technology (Germany)
“Convergence rates for Poisson noise adapted Tikhonov regularization”
Seminar of the “Graduiertenkolleg 1023”, July 2011
Georg-August-Universität Göttingen (Germany)
“Generalized Tikhonov regularization: modeling, convergence rates, numerical results”
Symposium “Chemnitz Symposium on Inverse Problems”, September 2010
Chemnitz University of Technology (Germany)
“Variational inequalities versus source conditions in Hilbert spaces”
Conference “Inverse Problems: Modeling & Simulation”, May 2010
Lykiaworld & Linksgolf Antalya (Turkey)
“On convergence rates in variational regularization with general residual term”
Workshop “Inverse Problems: developments in theory and applications”, February 2010
Banach Center Warsaw (Poland)
“Some remarks on general similarity functionals in variational regularization”
Symposium “Chemnitz-RICAM Symposium on Inverse Problems”, July 2009
RICAM Linz (Austria)
“Convergence Rates for Tikhonov Regularization with General Similarity Functional”
Seminar “Mathematikkolloquium”, February 2009
Institute of Mathematics, University of Innsbruck (Austria)
“Konzepte für Quellbedingungen bei Tikhonov-Regularisierung, Überblick und neue Ansätze”