Search Results for author: Tobias Pfaff

Found 16 papers, 4 papers with code

Scaling Face Interaction Graph Networks to Real World Scenes

no code implementations22 Jan 2024 Tatiana Lopez-Guevara, Yulia Rubanova, William F. Whitney, Tobias Pfaff, Kimberly Stachenfeld, Kelsey R. Allen

Accurately simulating real world object dynamics is essential for various applications such as robotics, engineering, graphics, and design.

Friction

Learning rigid dynamics with face interaction graph networks

no code implementations7 Dec 2022 Kelsey R. Allen, Yulia Rubanova, Tatiana Lopez-Guevara, William Whitney, Alvaro Sanchez-Gonzalez, Peter Battaglia, Tobias Pfaff

Simulating rigid collisions among arbitrary shapes is notoriously difficult due to complex geometry and the strong non-linearity of the interactions.

MultiScale MeshGraphNets

no code implementations2 Oct 2022 Meire Fortunato, Tobias Pfaff, Peter Wirnsberger, Alexander Pritzel, Peter Battaglia

In recent years, there has been a growing interest in using machine learning to overcome the high cost of numerical simulation, with some learned models achieving impressive speed-ups over classical solvers whilst maintaining accuracy.

Physical Design using Differentiable Learned Simulators

no code implementations1 Feb 2022 Kelsey R. Allen, Tatiana Lopez-Guevara, Kimberly Stachenfeld, Alvaro Sanchez-Gonzalez, Peter Battaglia, Jessica Hamrick, Tobias Pfaff

In our fluid manipulation tasks, the resulting designs outperformed those found by sampling-based optimization techniques.

Predicting Physics in Mesh-reduced Space with Temporal Attention

no code implementations ICLR 2022 Xu Han, Han Gao, Tobias Pfaff, Jian-Xun Wang, Li-Ping Liu

Graph-based next-step prediction models have recently been very successful in modeling complex high-dimensional physical systems on irregular meshes.

Learned Coarse Models for Efficient Turbulence Simulation

1 code implementation31 Dec 2021 Kimberly Stachenfeld, Drummond B. Fielding, Dmitrii Kochkov, Miles Cranmer, Tobias Pfaff, Jonathan Godwin, Can Cui, Shirley Ho, Peter Battaglia, Alvaro Sanchez-Gonzalez

We show that our proposed model can simulate turbulent dynamics more accurately than classical numerical solvers at the comparably low resolutions across various scientifically relevant metrics.

Constraint-based graph network simulator

no code implementations16 Dec 2021 Yulia Rubanova, Alvaro Sanchez-Gonzalez, Tobias Pfaff, Peter Battaglia

We can improve the simulation accuracy on a larger system by applying more solver iterations at test time.

Physical Simulations

Learning ground states of quantum Hamiltonians with graph networks

no code implementations12 Oct 2021 Dmitrii Kochkov, Tobias Pfaff, Alvaro Sanchez-Gonzalez, Peter Battaglia, Bryan K. Clark

In this work we use graph neural networks to define a structured variational manifold and optimize its parameters to find high quality approximations of the lowest energy solutions on a diverse set of Heisenberg Hamiltonians.

Learned Simulators for Turbulence

no code implementations ICLR 2022 Kim Stachenfeld, Drummond Buschman Fielding, Dmitrii Kochkov, Miles Cranmer, Tobias Pfaff, Jonathan Godwin, Can Cui, Shirley Ho, Peter Battaglia, Alvaro Sanchez-Gonzalez

We show that our proposed model can simulate turbulent dynamics more accurately than classical numerical solvers at the same low resolutions across various scientifically relevant metrics.

Learning Mesh-Based Simulation with Graph Networks

11 code implementations ICLR 2021 Tobias Pfaff, Meire Fortunato, Alvaro Sanchez-Gonzalez, Peter W. Battaglia

Our model can be trained to pass messages on a mesh graph and to adapt the mesh discretization during forward simulation.

Numerical Integration

Learning to Simulate Complex Physics with Graph Networks

12 code implementations ICML 2020 Alvaro Sanchez-Gonzalez, Jonathan Godwin, Tobias Pfaff, Rex Ying, Jure Leskovec, Peter W. Battaglia

Here we present a machine learning framework and model implementation that can learn to simulate a wide variety of challenging physical domains, involving fluids, rigid solids, and deformable materials interacting with one another.

Visual Imitation with a Minimal Adversary

no code implementations ICLR 2019 Scott Reed, Yusuf Aytar, Ziyu Wang, Tom Paine, Aäron van den Oord, Tobias Pfaff, Sergio Gomez, Alexander Novikov, David Budden, Oriol Vinyals

The proposed agent can solve a challenging robot manipulation task of block stacking from only video demonstrations and sparse reward, in which the non-imitating agents fail to learn completely.

Imitation Learning Robot Manipulation

One-Shot High-Fidelity Imitation: Training Large-Scale Deep Nets with RL

no code implementations ICLR 2019 Tom Le Paine, Sergio Gómez Colmenarejo, Ziyu Wang, Scott Reed, Yusuf Aytar, Tobias Pfaff, Matt W. Hoffman, Gabriel Barth-Maron, Serkan Cabi, David Budden, Nando de Freitas

MetaMimic can learn both (i) policies for high-fidelity one-shot imitation of diverse novel skills, and (ii) policies that enable the agent to solve tasks more efficiently than the demonstrators.

Playing hard exploration games by watching YouTube

1 code implementation NeurIPS 2018 Yusuf Aytar, Tobias Pfaff, David Budden, Tom Le Paine, Ziyu Wang, Nando de Freitas

One successful method of guiding exploration in these domains is to imitate trajectories provided by a human demonstrator.

Montezuma's Revenge

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