Search Results for author: Sebastian Kaltenbach

Found 10 papers, 3 papers with code

A Learnable Prior Improves Inverse Tumor Growth Modeling

no code implementations7 Mar 2024 Jonas Weidner, Ivan Ezhov, Michal Balcerak, Marie-Christin Metz, Sergey Litvinov, Sebastian Kaltenbach, Leonhard Feiner, Laurin Lux, Florian Kofler, Jana Lipkova, Jonas Latz, Daniel Rueckert, Bjoern Menze, Benedikt Wiestler

Biophysical modeling, particularly involving partial differential equations (PDEs), offers significant potential for tailoring disease treatment protocols to individual patients.

Generative Learning for Forecasting the Dynamics of Complex Systems

no code implementations27 Feb 2024 Han Gao, Sebastian Kaltenbach, Petros Koumoutsakos

We introduce generative models for accelerating simulations of complex systems through learning and evolving their effective dynamics.

Interpretable learning of effective dynamics for multiscale systems

no code implementations11 Sep 2023 Emmanuel Menier, Sebastian Kaltenbach, Mouadh Yagoubi, Marc Schoenauer, Petros Koumoutsakos

In recent years, techniques based on deep recurrent neural networks have produced promising results for the modeling and simulation of complex spatiotemporal systems and offer large flexibility in model development as they can incorporate experimental and computational data.

Interpretable reduced-order modeling with time-scale separation

no code implementations3 Mar 2023 Sebastian Kaltenbach, Phaedon-Stelios Koutsourelakis, Petros Koumoutsakos

To this end, we combine a non-linear autoencoder architecture with a time-continuous model for the latent dynamics in the complex space.

Semi-supervised Invertible Neural Operators for Bayesian Inverse Problems

1 code implementation6 Sep 2022 Sebastian Kaltenbach, Paris Perdikaris, Phaedon-Stelios Koutsourelakis

Neural Operators offer a powerful, data-driven tool for solving parametric PDEs as they can represent maps between infinite-dimensional function spaces.

Physics-enhanced Neural Networks in the Small Data Regime

1 code implementation19 Nov 2021 Jonas Eichelsdörfer, Sebastian Kaltenbach, Phaedon-Stelios Koutsourelakis

Identifying the dynamics of physical systems requires a machine learning model that can assimilate observational data, but also incorporate the laws of physics.

Inductive Bias

Physics-aware, deep probabilistic modeling of multiscale dynamics in the Small Data regime

no code implementations8 Feb 2021 Sebastian Kaltenbach, Phaedon-Stelios Koutsourelakis

The data-based discovery of effective, coarse-grained (CG) models of high-dimensional dynamical systems presents a unique challenge in computational physics and particularly in the context of multiscale problems.

Physics-aware, probabilistic model order reduction with guaranteed stability

no code implementations ICLR 2021 Sebastian Kaltenbach, Phaedon-Stelios Koutsourelakis

Given (small amounts of) time-series' data from a high-dimensional, fine-grained, multiscale dynamical system, we propose a generative framework for learning an effective, lower-dimensional, coarse-grained dynamical model that is predictive of the fine-grained system's long-term evolution but also of its behavior under different initial conditions.

Dimensionality Reduction Inductive Bias +1

Incorporating physical constraints in a deep probabilistic machine learning framework for coarse-graining dynamical systems

1 code implementation30 Dec 2019 Sebastian Kaltenbach, Phaedon-Stelios Koutsourelakis

Data-based discovery of effective, coarse-grained (CG) models of high-dimensional dynamical systems presents a unique challenge in computational physics and particularly in the context of multiscale problems.

BIG-bench Machine Learning Small Data Image Classification

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