All Years Seminars
[INMA] 2017-06-08 (14:00) : Student's presentations on classic topics
At Euler building (room A.002)
Speaker :
Unknown (Unknown)
Abstract :
Master students will introduce a classic topic in thirty minutes. Everybody is welcome to come and listen to any of the topics.
2:00pm: Rémi Chauvenne and Valentin Hamaïde: Compressed sensing
2:40pm: Maxime Duyck: Recent advances in coordinate-descent optimization methods
3:20pm: Simon Mertens: Tensor decompositions for signal processing applications
4:00pm: François Delcourt and Victorien Cornet: Proximal algorithms
End around 4:40pm
[INMA] 2017-05-22 (14:00) : Modeling of nonlinear systems using regularization: A tool to look into your brain ?
At Euler building (room A.207)
Speaker :
Georgios Birpoutsoukis (VUB)
Abstract :
Real systems exhibit in general nonlinear characteristics in their dynamic behavior. At the same time, advanced mathematical models of dynamic systems are more and more necessary for simulation, prediction and/or control. In this presentation we will go through the modeling procedure for a nonlinear system in the field of Biomechanical Engineering. The system involves the relation between imposed wrist motion and the voltage evoked in the brain as a reaction to this motion. One of the challenges in modeling this system is the quite limited intuition about the type of nonlinearity in the dynamic behavior.
[INMA] 2017-05-16 (14:00) : Student's presentations on classic topics
At Euler building (room A.207)
Speaker :
Unknown (Unknown)
Abstract :
Master students will introduce a classic topic in thirty minutes. Everybody is welcome to come and listen to any of the topics.
2:00pm: Céline Gérard and Andine Havelange: Model predictive control
2:40pm: Benjamin Chiëm and Leïla Van Keirsbilck: Networked Systems
3:20pm: Florimond Houssiau: Convex optimization of power systems
4:00pm: Taku Kaneda and Bruno Losseau: Online convex optimization
[INMA] 2017-05-05 (14:00) : On the influence of network structure on non-Markovian spreading in deterministic and random graphs
At Euler building (room A.207)
Speaker :
Medvedev, Alexey
Abstract :
One model of real-life spreading processes is the SI model (also called First Passage Percolation) on random graphs. Social interactions often follow bursty patterns, which are usually modelled with non-Markovian heavy-tailed edge weights. On the other hand, random graphs are often locally tree-like, and spreading on trees is very slow, because of bottleneck edges with huge weights. We show the surprising phenomenon that adding a single random edge to a tree typically accelerates the process severely. We examine this acceleration effect on some natural models of random trees: critical Galton-Watson trees conditioned to be large in some way, uniform random trees using Loop Erased Random Walks and Pólya urn ideas. Along with that we perform a numerical study of the influence of graph properties on characteristic time of spreading using the mobile phone call dataset.
[INMA] 2017-04-25 (14:00) : Battre les cartes : du mélange de Gaspard Monge aux surprenants résultats de Persi Diaconis
At Aula Magna, Salle "Théatre"
Speaker :
Jean-Paul Delahaye (Universite¿ de Lille 1, France)
Abstract :
Conférence donnée dans le cadre du colloque DédraMATHisons, voir https://cdn.uclouvain.be/groups/cms-editors-epl/17-0320-EPL_DedraMATHisons_Programme2017_DEF.pdf pour le programme complet.
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