DAMUT Colloquium archive
2026
- Date: 01 April 2026 Location: RA-1501
Speaker: dr. Frank Röttger (MDS/MOR-STAT)
Title: An introduction to probabilistic graphical models for multivariate extremes
Abstract:
Multivariate extreme value theory provides a framework for modeling rare events in complex systems, such as floods in river networks, financial crashes, or heatwaves. A central challenge in extremal dependence modeling is to capture the joint structure of extremes using models that remain flexible yet parsimonious, since extreme observations are typically scarce. In this talk, we discuss how probabilistic graphical models address these challenges. We introduce both directed and undirected graphical models for multivariate extremes built from threshold exceedances, and outline methods for structure and parameter learning in high dimensions. Finally, we present a family of extremal graphical models that enables a parametric representationof conditional independence in extremes, leading to particularly tractable and interpretable statistical methodology. - Date: 04 March 2026, Location: RA-2501
Speaker: Dr. Martijn Gösgens (MDS/MOR-SOR)
Title: Geometry hinders the formation of consensus in asynchronous majority dynamics
Abstract:
We investigate a model of opinion dynamics where vertices asynchronously announce opinions based on their private opinion and on the previously announced opinions of their neighbors. Our focus is on understanding how the structure of the underlying graph influences the likelihood of reaching consensus on the true opinion. Previous work proved that for sufficiently sparse, connected expander graphs, this process terminates in consensus on the true opinion with high probability. In this work, we show that when the underlying graph has geometric structure, the process is likely to terminate in disconsensus. Specifically, we prove that for a one-dimensional Random Geometric Graph (RGG) of n vertices with expected degree o(√n), the process ends in disconsensus with high probability. Numerical experiments indicate that this phenomenon persists in higher-dimensional RGGs. Instead of a global consensus, we observe that the geometry leads to local consensuses.
2025
- Date: 12 March 2025
Speaker: Dr. Rianne de Heide (MDS/MOR-STAT)
Title: "E is the new P" - 12 February 2025
Speaker: Dr Gautam Pai (MDS/MCS-MIA)
Title: "Computational Optimal Transport on Geometric Domains" - Thursday! 16 January 2025
Speaker: Dr Nathanael Skrepek (MCS-MAST)
Title: "A port-Hamiltonian approach to coupled cable-field problems"
2024
- 04 December 2024
Speaker: Eyal Castiel - DAMUT-MOR
Title: Parallel server systems and optimal control - 03 July 2024
Speaker: Tracy Craig (MIA & FERMAT)
Title: "Mathematics and Didactics Synthesis" - winning proposal for the BIG - 12 June 2024
Speaker: Gaurav Rattan (MOR-DMMP)
Title: "Learning on Graphs with Message-Passing" - 05 June 2024
Speaker: Juan Carlos Afonso (UT-ICT)
Title: "Simulation-based exploration of planetary interiors: from numerical models to probabilistic inversions" - 08 May 2024; Cancelled due to illness!!
Speaker: P. (Patrick) Buchfink (DAMUT/MAST)
Title: Structure-preserving MOR on submanifolds and subspaces - 28 February 2024
Speaker: Dr. Abbas Rizi (Aalto University)
Title: Consequences of Social Network Structure for Epidemic Interventions - 17 January 2024
Speaker: Mark Peletier
Title: "Singular-limit analysis of training with noise injection"
2023
- 01 November 2023
Speaker: Tomasz Tyranowski (SACS-MACS)
Title: Stochastic geometric integrators for problems in plasma physics - 04 October 2023
Speaker: Alexander Heinlein (TUDelft)
Title: "Decomposing physics-informed neural networks" - 06 September 2023
Speaker: Alexey Lyulin (SACS-3MS)
Title: “Multiscale modelling of perspective polyelectrolyte membranes for flow and fuel batteries" - 05 April 2023
Speaker: Philip Lederer (SACS-MACS)
Title: “Towards super glue and rubber bands in finite element methods, or, on structure preserving methods for computational fluid dynamics" - 08 March 2023
Speaker: Jun. Prof. Thomas Berger (Uni. Paderborn)
Title: “Funnel control - a brief introduction" - 08 February 2023
Speaker: Tracy Craig, (SACS-MIA).
Title: “Practice-led mathematics education research, from problem solving to vector calculus" - 12 January 2023
Speaker: Remco Duits, (TU/e Department of Mathematics and Computer Science (CASA-GLDG)).
Title: “PDE-G-CNNs: PDE-based roto-translation equivariant convolutional neural networks and applications."
2022
- 07 December 2022
Speaker: Yvo Boers (guest MAST)
Title: Various fundamental statistical results for particle filters. - 09 November 2022
Speaker: Maria Vlasiou (TU/e & DAMUT-MOR)
Title: Power Systems and Applied Probability: Electric Vehicles - 07 September 2022
Speaker: Anne Remke (WWU Münster, UT)
Title: Optimizing different flavours of nondeterminism in hybrid automata with random clocks - 06 July 2022
Speaker: Hanyuan Hang (DAMUT-MOR)
Title: Statistical Learning of Ensemble Methods - 15 June 2022|
Speaker: Matus Telgarsky (University of Illinois)
Title: The margin approach to the analysis of deep networks. - 01 June 2022
Speaker: Janusz Meylahn (UvA, per 1-7-22: DAMUT-MOR)
Title: Algorithmic collusion with multi-agent learning - 04 May 2022
Speaker: Anne Zander (DAMUT-MOR)
Title: A healthcare example to showcase solution methods for sequential decision-making - 06 April 2022
Speaker: Marcel Klatt (University of Göttingen)
Title: A Guided Tour through Optimal Transport. - 02 March 2022:
Speaker: Silke Glas (DAMUT-MAST)
Title: "Symplectic Model Reduction of Hamiltonian Systems on Nonlinear Manifolds” - 02 February 2022:
Speaker: José Iglesias (DAMUT-MIA)
Title: implicit surfaces and variational regularization - 13 January 2022:
Speaker: Marcello Carioni - (DAMUT-MIA)
Title: Sparse optimization, dynamics and deep learning for solving inverse problem
2021
- 01 December 2021
Speaker: prof.dr. Alexander Schnurr (Siegen)
Title: An overview on applications of ordinal patterns and ordinal pattern dependence - 10 November 2021
Speaker: Carlos Pérez Arancibia
Title: Density Interpolation Methods for Boundary Integral Equations - 30 June 2021:
Title: Community detection
Speaker: Chao Gao - University of Chicago - 16 June 2021
Katharina Proksch (DAMUT-MOR) & Georg Loho (DAMUT-MOR) - 02 June 2021
Antonios Antoniadis (DAMUT-MOR) & Hanyuan Hang (DAMUT-MOR) - 12 May 2021
Speaker: Lars Ruthotto, Emory University, Atlanta, GA, USA
Title: A Machine Learning Framework for Mean Field Games and Optimal Control - 28 April 2021
Annika Betken (DAMUT-MOR) & Mengwu Guo (DAMUT-AA) - 14 April 2021
Cristobal Guzman (DAMUT-MOR) & Fleurianne Bertrand (DAMUT-MACS)
2020
- 26 February 2020
Title: Clustering with statistical error control
Speaker: Michael Vogt (University of Bonn) - 19 February 2020
Title: Inverse Problems and Deep Learning
Spreaker: Markus Haltmeier (University of Innsbruck, Austria) - 15 January 2020 (first speaker)
Title: Generalized Matching Games for International Kidney Exchange
Speaker: Daniel Paulusma (Durham University) - 15 January 2020 (second speaker)
Title: Mathematical modelling of large-scale brain dynamics
Speaker: Stephen Coombes (University Nottingham)
2019
- 20 November 2019
Title: Projections in Combinatorial Optimization
Spreaker: Volker Kaibel (University Magdeburg) - 02 October 2019
Title: Competition and rumor spread on scale-free random graphs
Spreaker: Remco van der Hofstad (TU Eindhoven) - 11 September 2019
Title: Data Science and Machine Learning: Mathematical and Statistical Methods
Spreaker: Dirk Kroese (University of Queensland) - 24th July 2019
Title: Fast algorithms for nonlinear optimal control for diffeomorphic registration
Speaker: Andreas Mang (University of Houston) - 19 June 2019
Title: Gradient-based dimension reduction for uncertainty quantification problems
Speaker: Olivier Zahm (INRIA, Grenoble) - 05 June 2019
Speaker: John Augustine (IIT Madras)
Title: Distributed Computation in Node-Capacitated Networks - 28th of May 2019
Title: Geometric Pattern Design: Applied Mathematics in Ornamental Art
Speaker: Goossen Karssenberg - 08 May 2019
Speaker: Alexander Heinlein (Uni. Köln)
Title: Designing robust and efficient domain decomposition methods for highly heterogeneous problems using local spectral information and machine learning techniques - 10 April 2019
Speaker: Joris Mooij
Title: Causal Constraints Models
2018
- 14 november 2018:
Speaker: Katharina Proksch (University of Göttingen)
Title: Statistical Inference for Molecules - 17 October 2018:
Speaker: Clara Stegehuis MSc
Title: How community structure affects epidemics - 18 April 2018
Speaker: Johannes Schmidt-Hieber (Leiden University)
Title: Statistical theory for deep neural networks with ReLU activation function - 07 March 2018
Speaker: Jan Bouwe van den Berg (VU Amsterdam)
Title: Computer-assisted theorems in dynamics - 20 February 2018
Speaker: Mrs. Anne Heining (M&C - UT)
Topic : Workshop Social Media - 10 January 2018
Speaker: WOMEN IN MATHEMATICS
2017
- 13 December 2017
Speaker: Dr. Fred Vermolen (TUD)
Title: The mathematics of burn injuries - 06 December 2017
Speaker: Martina Chirilus-Bruckner (Leiden University)
Title: Dynamics of fronts in a multi-component reaction-diffusion system: when Takens-Bogdanov meets a butterfly catastrophe - 17 november 2017
Speaker: Jun.-Prof. Dr. Alexander Skopalik
Title: Simple, distributed, and powerful - utilizing local search for resource allocation and equilibrium computation - 01 November 2017
Speaker: Dr. Guus Regts (UvA)
Title: On a conjecture of Sokal concerning roots of the independence polynomial - 27 September 2017:
Prof.dr. Christian Clason
Title: Convex regularization of discrete-valued inverse problems - 09 June 2017
Frank van der Meulen (TUD)
Title: Bayesian computation for diffusion processes - 07 June 2017
Cor Kraaikamp (TU Delft)
Title: Continued Fractions: simply beautiful, or an acquired taste? - 06 June 2017 :
Jean-Paul Fox (UT)
Title: Bayesian Modeling of Large-Scale Survey Data: Issues in Statistical Computing and Hypothesis Testing - 20 April 2017
Carola Schönlieb (Cambridge)
Title: Model-based learning in imaging - 06 April 2017
Maria Vlasiou (TU/e)
Title: Error bounds and approximations for heavy-tailed stochastic systems - 01 March 2017
Max Drees (UT)
Title: Approximate Pure Nash Equilibria In Budget Games - 20 January 2017
Jan Haskovec (KAUST)
Title: Discrete and continuum modeling of biological network formation
2016
- 07 December 2016
Pranab Mandal (UT)
Title: Recent developments in particle filtering - 02 November 2016
Marie-Colette van Lieshout (UT/CWI)
Title: Summary statistics for spatial data - 12 October 2016
Tristan van Leeuwen (UU)
Title: Joint parameter and state estimation for inverse problems - 7 Sep 2016
Dr.ir. Fokko Jan Dijksterhuis (UT)
Title: Simon Stevin and the roots of applied mathematics - 01 June 2016:
Matthias Schlottbom (Universität Münster)
Title: On Galerkin schemes for time-dependent radiative transfer - 04 May 2016:
Marc Uetz ( UT)
Title: Shortest Path to Mechanism Design - 24 February 2016 :
Martin Burger (Universität Münster)
Title: Motion-Corrected Dynamic Tomograph