Nonlinear Dynamics at the Free University Berlin

Winter 2018/2019

Seminar Advanced Topics in Nonlinear Dynamics

Prof. Dr. Bernold Fiedler, Dr. Isabelle Schneider


Thursday, October 25, 2018 Hannes Stuke (FU Berlin) A dynamical systems approach to outlier robust machine learning
We deal with a supervised learning in which we want to fit probability distributions of observed data by artificial neural networks. We introduce the so-called gradient conjugate prior (GCP) update and the induced dynamical system. We will explain the dynamics of the parameters and show how one can use insights from the dynamical behavior to recover the ground truth distribution in a way that is more robust against outliers. This is joint work with Pavel Gurevich.
Thursday, November 1st, 2018
Nicola Vassena (FU Berlin) A report from outside world - are we on a shared path or on a lonely path?
Thursday, November 8th, 2018 Si Mohamed Sah (Technical University of Denmark) Infinite limit cycle bifurcation in a delayed differential equation
We investigate the occurrence of a bifurcation, which we term the ``infinite limit cycle bifurcation", or ILCB for short, in a second order nonlinear DDE (delay-differential equation). When the delay time T>0, no matter how small, an infinite number of limit cycles (LCs) exist, their amplitude going to infinity as T goes to zero. Perturbation methods are used to approximate the system and investigate the nature of such a bifurcation.
Thursday, November 15th, 2018 Maximilian Bee and Hauke Sprink (FU Berlin) The ζ-function
Nicola Vassena (FU Berlin) A divulgative talk on chemical reaction networks

Time and Place

Talks usually take place on Thursday at 2:15 p.m.
at the Free University Berlin
Room 130, Arnimallee 7 (rear building), 14195 Berlin.

Guests are always welcome!


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