Group Seminars

Informal group seminars covering topics from Numerical Linear Algebra and Data Assimilation take place Wednesday 12:00 in Golm, House 9, room 2.09.1.22. They last about 60 minutes and we go for lunch afterwards.

Summer 2026

• 15.04.2026 Nikolas Hecht (UP) will talk about the work of his MSc thesis "Model Order Reduction for SPDE-Control Systems via Balanced Truncation".

• 22.04.2026 Thomas Mach (UP) will talk about "An arithmetic for matrix pencils: theory and new algorithms", a paper by Benner/Byers.

• 29.04.2026 No Seminar, Silvia Gazzola (University of Pisa) speaks in the joint SFB and Institute Colloquium at 2pm on "Krylov Methods for Solving Inverse Problems: Classical and Randomized Algorithmic Approaches". Thomas Mach will give a "What is ...?" lecture beforehand from 13:00-13:45 on Krylov subspaces.

• 06.05.2026 Josie König (UP) will talk about "Krylov-subspace methods for reduced-order modeling in circuit simulation", a paper by R. Freund.

• 13.05.2026 Max Pfeffer (UP) will talk about "Manifold Optimization in Data Science".

• 20.05.2026 Jannis Marquardt (University of Braunschweig) will talk about "A reformulated optimal control approach for 4D-var data assimilation and the application of space-time proper orthogonal decomposition".

• 27.05.2026 Pfingstwoche. No Seminar (Preconditioning Meeting Edinburgh)

• 03.06.2026 Adrian Lorenz (UP) will talk about "Solution of infinite Bayesian linear inverse Problems with Chebfun"

• 10.06.2026

• 17.06.2026 Philipp Schulze (TU Berlin).

• 24.06.2026 Catherine Powell (The University of Manchester).

• 01.07.2026 Vivian Zhang (Georgia Institute of Technology) 

• 08.07.2026

Informal group seminars covering topics from Numerical Linear Algebra, Data Assimilation and Bayesian Inference take place Wednesday 10:15 in Golm, House 9, room 2.09.0.14. They last about 60 minutes and we go for lunch afterwards.

Summer 2023

• 19.04.2023 Luca Schmidt on the paper: "The Why and How of Nonnegative Matrix Factorization"  https://doi.org/10.48550/arXiv.1401.5226 

• 26.04.2023 No Seminar.

• 03.05.2023 Florian Pieler on the paper: "Bayes Meets Krylov: Statistically Inspired Preconditioners for CGLS" https://doi.org/10.1137/15M1055061

• 10.05.2023 Thomas Mach: NIPALS

• 17.05.2023 Jan Martin Nicolaus on "Operator Inference for SDEs"

• 24.05.2023 No Seminar

• 31.05.2023 No Seminar (GAMM Jahrestagung)

• 07.06.2023 Verteidigung Masterarbeit Dao Jin Khor: Valuation of European Options by Solving (parametric) PDEs with (parametric) PINNs

• 14.06.2023 No Seminar

• 21.06.2023 No Seminar

• 28.06.2023 No Seminar

• 05.07.2023 Josie König on the paper "Model reduction for nonlinear systems by balanced truncation of state and gradient covariance" arxiv.org/abs/2207.14387 

• 12.07.2023 Martin Grepl (RWTH Aachen): "Reduced Basis Methods: From Key Ingredients to 4DVar"

• 19.07.2023 Verteidigung Masterarbeit Abderrahmane Ouachouach (moved to 20.07.2023)

Winter 2022/23

• 19.10.2022 No Seminar.

• 26.10.2022 Group Meeting.

• 02.11.2022 Vortrag Jan Martin Nicolaus (UP)

• 09.11.2022 No Seminar.

• 16.11.2022 Josie König (UP)

• 23.11.2022 Hossein Aghamiry (University of Cote d'Azur): Optimizing seismic survey design using global optimization techniques

• 30.11.2022 No Seminar.

• 07.12.2022 No Seminar.

• 14.12.2022 Mirjeta Pasha (Tufts University): Bayesian and Deterministic Spatio-Temporal Methods with Edge-Preserving Priors for Inverse Problems

• 04.01.2023 Verteidigung Masterarbeit Ayoub Bouayaben: Optimisation Techniques for solving Nonlinear Inverse Problems

• 11.01.2023 Thomas Mach (UP)

• 18.01.2023 Hossein Aghamiry (University of Cote d'Azur): Optimizing seismic survey design using global optimization techniques

• 25.01.2023 No Seminar, but Institutskolloquium by Martin Stoll (TU Chemnitz) and Melina Freitag

• 01.02.2023 No Seminar.

• 08.02.2023 Josie König (UP)

Summer 2022

• 20.04.2022 Han Cheng Lie (Group Meeting A07)

• 27.04.2022 Adrian Lorenz (BSc UP): Der Kalman Filter

• 03.05.2022 (NOTE, this is Tuesday and in room 2.09.1.22) Siobhan Correnty (KTH Stockholm) : Krylov methods for solving parameterized linear systems

• 11.05.2022 Hossein Aghamiry (University of Cote d'Azur): Towards a unified framework for large scale imaging problems: Theory, applications, and potential issues

• 25.05.2022 Josie König (Group Meeting A07)

• 22.06.2022 Jan Martin Nicolaus (UP): Stochastic differential equations - application, simulation and parameter estimation (online)

• 04.07.2022 Giuseppe Carere (Group Meeting A07)

• 13.07.2022 Saddam Hijazi (UP): POD-Galerkin ROMs and physics-informed neural networks for solving inverse problems for the Navier--Stokes equations

• 20.07.2022 Thomas Mach (UP) : "Parameter-dependent eigenvalue problems"

• 27.07.2022 No Seminar.

• 22.08.2022 Additional Seminar: Verteidigung Masterarbeit Janik Raue: Parameter estimation for differential equations