Search Results for author: Koen Tiels

Found 11 papers, 4 papers with code

A computationally lightweight safe learning algorithm

no code implementations7 Sep 2023 Dominik Baumann, Krzysztof Kowalczyk, Koen Tiels, Paweł Wachel

Unfortunately, Gaussian process inference scales cubically with the number of data points, limiting applicability to high-dimensional and embedded systems.

Gaussian Processes

Neural oscillators for magnetic hysteresis modeling

no code implementations23 Aug 2023 Abhishek Chandra, Taniya Kapoor, Bram Daniels, Mitrofan Curti, Koen Tiels, Daniel M. Tartakovsky, Elena A. Lomonova

Hysteresis is a ubiquitous phenomenon in science and engineering; its modeling and identification are crucial for understanding and optimizing the behavior of various systems.

Identifying Lebesgue-sampled Continuous-time Impulse Response Models: A Kernel-based Approach

no code implementations6 Apr 2023 Rodrigo A. González, Koen Tiels, Tom Oomen

Control applications are increasingly sampled non-equidistantly in time, including in motion control, networked control, resource-aware control, and event-triggered control.

Kernel-based identification using Lebesgue-sampled data

no code implementations10 Mar 2023 Rodrigo A. González, Koen Tiels, Tom Oomen

Sampling in control applications is increasingly done non-equidistantly in time.

Discovery of sparse hysteresis models for piezoelectric materials

1 code implementation10 Feb 2023 Abhishek Chandra, Bram Daniels, Mitrofan Curti, Koen Tiels, Elena A. Lomonova, Daniel M. Tartakovsky

This article presents an approach for modelling hysteresis in piezoelectric materials, that leverages recent advancements in machine learning, particularly in sparse-regression techniques.

regression

PNLSS Toolbox 1.0

no code implementations18 May 2021 Jan Decuyper, Koen Tiels, Johan Schoukens

This is a demonstration of the PNLSS Toolbox 1. 0.

Decoupling multivariate functions using a non-parametric Filtered CPD approach

no code implementations18 May 2021 Jan Decuyper, Koen Tiels, Siep Weiland, Johan Schoukens

Usually a generic basis function expansion is used, e. g. a polynomial basis, and the parameters of the function are tuned given the data.

Deep Convolutional Networks in System Identification

1 code implementation4 Sep 2019 Carl Andersson, Antônio H. Ribeiro, Koen Tiels, Niklas Wahlström, Thomas B. Schön

Recent developments within deep learning are relevant for nonlinear system identification problems.

Beyond exploding and vanishing gradients: analysing RNN training using attractors and smoothness

1 code implementation20 Jun 2019 Antônio H. Ribeiro, Koen Tiels, Luis A. Aguirre, Thomas B. Schön

The exploding and vanishing gradient problem has been the major conceptual principle behind most architecture and training improvements in recurrent neural networks (RNNs) during the last decade.

On the smoothness of nonlinear system identification

1 code implementation2 May 2019 Antônio H. Ribeiro, Koen Tiels, Jack Umenberger, Thomas B. Schön, Luis A. Aguirre

We shed new light on the \textit{smoothness} of optimization problems arising in prediction error parameter estimation of linear and nonlinear systems.

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