Research Interests
馃 Multi-Agent Reinforcement Learning
馃搻 Geometric Deep Learning
馃 Imitation Learning
Occupations
馃鈥嶐煄揚hD Student @ Autonomous Learning Robots Lab
Karlsruhe Institute of Technology (KIT), Germany
April 2021-now
馃懆鈥嶐煍珹pplied Science Intern @ TEN Search
Amazon, Luxembourg
August 2024-January 2025
1st Author Publications

Hierarchical Multi-field Representations for Two-Stage E-commerce Retrieval
Under Review, 2025.
N. Freymuth, D. Liu, T. Ricatte, S. Manseur
Language Models, Information Retrieval
Adaptive Swarm Mesh Refinement using Deep Reinforcement Learning with Local Rewards.
Under Review, 2025.
N. Freymuth, P. Dahlinger, T. W眉rth, S. Reisch, L. K盲rger, G. Neumann
Adaptive Mesh Refinement, Multi-Agent Reinforcement Learning, Graph Neural Networks


Swarm Reinforcement Learning for Adaptive Mesh Refinement.
36th Neural Information Processing Systems (NeurIPS), 2023.
N. Freymuth, P. Dahlinger, T. W眉rth, S. Reisch, L. K盲rger, G. Neumann
Adaptive Mesh Refinement, Multi-Agent Reinforcement Learning, Graph Neural Networks
Inferring Versatile Behavior from Demonstrations by Matching Geometric Descriptors.
6th Conference on Robot Learning (CoRL), 2022.
N. Freymuth, N. Schreiber, P. Becker, A. Taranovic, G. Neumann
Versatile Imitation Learning, Robotic Manipulation

Co-Authorships
Learning Sub-Second Routing Optimization in Computer Networks requires Packet-Level Dynamics.
Transactions of Machine Learning Research (TMLR), 2024
Boltres, A., Freymuth, N., Jahnke, P., Karl, H., Neumann, G.


Physics-informed MeshGraphNets (PI-MGNs):
Neural finite element solvers for non-stationary and nonlinear simulations on arbitrary meshes
Computer Methods in Applied Mechanics and Engineering (CMAME), 2024.
T. W眉rth, N. Freymuth, C. Zimmerling, G. Neumann, L. K盲rger
Movement Primitive Diffusion: Learning Gentle Robotic Manipulation of Deformable Objects.
IEEE Robotics and Automation Letters (RA鈥慙), 2024.
Scheikl, P. M., Schreiber, N., Haas, C., Freymuth, N., Neumann, G., Lioutikov, R., & Mathis-Ullrich, F.


Adversarial Imitation Learning with Preferences.
11th International Conference on Learning Representations (ICLR), 2023.
A. Taranovic, A.G. Kupcsik, N. Freymuth, G. Neumann
Grounding Graph Network Simulators using Physical Sensor Observations.
11th International Conference on Learning Representations (ICLR), 2023.
J. Linkerh盲gner, N. Freymuth, P.M. Scheikl, F. Mathis-Ullrich, G. Neumann

Workshops
KalMamba: Towards Efficient Probabilistic State Space Models for RL under Uncertainty.
“Next Generation of Sequence Modeling Architectures” and “Aligning Reinforcement Learning Experimentalists and Theorists” Workshops at International Conference on Machine Learning (ICML), 2024.
P. Becker, N. Freymuth, G. Neumann


Iterative Sizing Field Prediction for Adaptive Mesh Generation From Expert Demonstrations.
AI4Science Workshop at International Conference on Machine Learning (ICML), 2024.
N. Freymuth, P. Dahlinger, T. W眉rth, P. Becker, A. Taranovic, O. Gr枚nheim, L. K盲rger, G. Neumann
Latent Task-Specific Graph Network Simulators.
AI4Science Workshop at Neural Information Processing Systems (NeurIPS), 2023.
P. Dahlinger, N. Freymuth, M. Volpp, T. Hoang, G. Neumann


Swarm Reinforcement Learning for Adaptive Mesh Refinement (v1). Workshop on Physics for Machine Learning at International Conference on Learning Representations (ICLR), 2023.
N. Freymuth, P. Dahlinger, T. W眉rth, L. K盲rger, G. Neumann
Versatile inverse reinforcement learning via cumulative rewards. 4th Robot Learning Workshop at Neural Information Processing Systems (NeurIPS), 2021.
N. Freymuth, P. Becker, and G. Neumann

Theses Supervision and Teaching
Bachelor’s Theses
- Autonomous Partitioning of Heterogeneous Swarm Systems
- Episodic Versatile Imitation Learning via Geometric Feature Matching
- Representation-Invariant Latent Spaces for Imitation Learning from Observation
- Swarm Reinforcement Learning with Graph Neural Networks
Teaching
- Teaching Assistant for the “Reinforcement Learning” Lecture @ KIT
- Seminar and Praktikum “Robot Learning” @ KIT
Misc. Projects
- Efficient Swarm Reinforcement Learning from Human Feedback
- Spatial Credit Assignment for Swarm Reinforcement Learning
Master’s Theses
- Rotation-Equivariant Graph Neural Networks for mesh-based simulations
- Adaptive Mesh HP-Refinement with Swarm Reinforcement Learning
- Explainable Graph Neural Networks for Autonomous Driving
- Explainable Graph Neural Networks for Traffic Routing
- Graph Diffusion for Adaptive Mesh R-Refinement
- Adaptive Mesh Refinement from Human Feedback
- Variational Swarm Reinforcement Learning for Predictive Models of Deformable Objects
- Reinforcement Learning for Deformable Object Manipulation
- Swarm Reinforcement Learning in Limited Visibility with Graph Neural Networks
- Physical Simulation from Observation using Graph Neural Networks
- RippleNet: A remote message passing method for Graph Neural Networks