Search Results for author: Stefan Sosnowski

Found 10 papers, 2 papers with code

Nonparametric Control-Koopman Operator Learning: Flexible and Scalable Models for Prediction and Control

no code implementations12 May 2024 Petar Bevanda, Bas Driessen, Lucian Cristian Iacob, Roland Toth, Stefan Sosnowski, Sandra Hirche

Linearity of Koopman operators and simplicity of their estimators coupled with model-reduction capabilities has lead to their great popularity in applications for learning dynamical systems.

Operator learning

Cooperative Learning with Gaussian Processes for Euler-Lagrange Systems Tracking Control under Switching Topologies

no code implementations5 Feb 2024 Zewen Yang, Songbo Dong, Armin Lederer, Xiaobing Dai, Siyu Chen, Stefan Sosnowski, Georges Hattab, Sandra Hirche

This work presents an innovative learning-based approach to tackle the tracking control problem of Euler-Lagrange multi-agent systems with partially unknown dynamics operating under switching communication topologies.

Gaussian Processes

Koopman Kernel Regression

1 code implementation NeurIPS 2023 Petar Bevanda, Max Beier, Armin Lederer, Stefan Sosnowski, Eyke Hüllermeier, Sandra Hirche

Many machine learning approaches for decision making, such as reinforcement learning, rely on simulators or predictive models to forecast the time-evolution of quantities of interest, e. g., the state of an agent or the reward of a policy.

Decision Making regression

Towards Data-driven LQR with Koopmanizing Flows

no code implementations27 Jan 2022 Petar Bevanda, Max Beier, Shahab Heshmati-Alamdari, Stefan Sosnowski, Sandra Hirche

To utilize it for efficient LTI control design, we learn a finite representation of the Koopman operator that is linear in controls while concurrently learning meaningful lifting coordinates.

Structure-Preserving Learning Using Gaussian Processes and Variational Integrators

no code implementations10 Dec 2021 Jan Brüdigam, Martin Schuck, Alexandre Capone, Stefan Sosnowski, Sandra Hirche

When using Gaussian process regression to learn unknown systems, a commonly considered approach consists of learning the residual dynamics after applying some generic discretization technique, which might however disregard properties of the underlying physical system.

Gaussian Processes regression

Diffeomorphically Learning Stable Koopman Operators

1 code implementation8 Dec 2021 Petar Bevanda, Max Beier, Sebastian Kerz, Armin Lederer, Stefan Sosnowski, Sandra Hirche

System representations inspired by the infinite-dimensional Koopman operator (generator) are increasingly considered for predictive modeling.

Operator learning

Learning the Koopman Eigendecomposition: A Diffeomorphic Approach

no code implementations15 Oct 2021 Petar Bevanda, Johannes Kirmayr, Stefan Sosnowski, Sandra Hirche

We present a novel data-driven approach for learning linear representations of a class of stable nonlinear systems using Koopman eigenfunctions.

Distributed Learning Consensus Control for Unknown Nonlinear Multi-Agent Systems based on Gaussian Processes

no code implementations29 Mar 2021 Zewen Yang, Stefan Sosnowski, Qingchen Liu, Junjie Jiao, Armin Lederer, Sandra Hirche

In this paper, a distributed learning leader-follower consensus protocol based on Gaussian process regression for a class of nonlinear multi-agent systems with unknown dynamics is designed.

Gaussian Processes regression

Koopman Operator Dynamical Models: Learning, Analysis and Control

no code implementations4 Feb 2021 Petar Bevanda, Stefan Sosnowski, Sandra Hirche

The Koopman operator allows for handling nonlinear systems through a (globally) linear representation.

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