Search Results for author: Niklas Freymuth

Found 8 papers, 4 papers with code

Physics-informed MeshGraphNets (PI-MGNs): Neural finite element solvers for non-stationary and nonlinear simulations on arbitrary meshes

no code implementations16 Feb 2024 Tobias Würth, Niklas Freymuth, Clemens Zimmerling, Gerhard Neumann, Luise Kärger

This work introduces PI-MGNs, a hybrid approach that combines PINNs and MGNs to quickly and accurately solve non-stationary and nonlinear partial differential equations (PDEs) on arbitrary meshes.

Movement Primitive Diffusion: Learning Gentle Robotic Manipulation of Deformable Objects

no code implementations15 Dec 2023 Paul Maria Scheikl, Nicolas Schreiber, Christoph Haas, Niklas Freymuth, Gerhard Neumann, Rudolf Lioutikov, Franziska Mathis-Ullrich

Policy learning in robot-assisted surgery (RAS) lacks data efficient and versatile methods that exhibit the desired motion quality for delicate surgical interventions.

Imitation Learning

Latent Task-Specific Graph Network Simulators

1 code implementation9 Nov 2023 Philipp Dahlinger, Niklas Freymuth, Michael Volpp, Tai Hoang, Gerhard Neumann

Movement primitives further allow us to accommodate various types of context data, as demonstrated through the utilization of point clouds during inference.

Meta-Learning Trajectory Prediction

Swarm Reinforcement Learning For Adaptive Mesh Refinement

1 code implementation NeurIPS 2023 Niklas Freymuth, Philipp Dahlinger, Tobias Würth, Simon Reisch, Luise Kärger, Gerhard Neumann

Adaptive Mesh Refinement (AMR) enhances the Finite Element Method, an important technique for simulating complex problems in engineering, by dynamically refining mesh regions, enabling a favorable trade-off between computational speed and simulation accuracy.

reinforcement-learning

Grounding Graph Network Simulators using Physical Sensor Observations

1 code implementation23 Feb 2023 Jonas Linkerhägner, Niklas Freymuth, Paul Maria Scheikl, Franziska Mathis-Ullrich, Gerhard Neumann

Our method results in utilization of additional point cloud information to accurately predict stable simulations where existing Graph Network Simulators fail.

Imputation Motion Planning +1

Inferring Versatile Behavior from Demonstrations by Matching Geometric Descriptors

1 code implementation17 Oct 2022 Niklas Freymuth, Nicolas Schreiber, Philipp Becker, Aleksandar Taranovic, Gerhard Neumann

We find that the geometric descriptors greatly help in generalizing to new task configurations and that combining them with our distribution-matching objective is crucial for representing and reproducing versatile behavior.

Imitation Learning

Versatile Inverse Reinforcement Learning via Cumulative Rewards

no code implementations15 Nov 2021 Niklas Freymuth, Philipp Becker, Gerhard Neumann

Inverse Reinforcement Learning infers a reward function from expert demonstrations, aiming to encode the behavior and intentions of the expert.

reinforcement-learning Reinforcement Learning (RL)

Bimodal Speech Emotion Recognition Using Pre-Trained Language Models

no code implementations29 Nov 2019 Verena Heusser, Niklas Freymuth, Stefan Constantin, Alex Waibel

Speech emotion recognition is a challenging task and an important step towards more natural human-machine interaction.

Speech Emotion Recognition

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