Search Results for author: Yunjin Tong

Found 5 papers, 1 papers with code

VortexNet: Learning Complex Dynamic Systems with Physics-Embedded Networks

no code implementations1 Jan 2021 Shiying Xiong, Xingzhe He, Yunjin Tong, Yitong Deng, Bo Zhu

Since the number of such vortices are much smaller than that of the Eulerian, grid discretization, this Lagrangian discretization in essence encodes the system dynamics on a compact physics-based latent space.

Nonseparable Symplectic Neural Networks

no code implementations ICLR 2021 Shiying Xiong, Yunjin Tong, Xingzhe He, Shuqi Yang, Cheng Yang, Bo Zhu

The enabling mechanics of our approach is an augmented symplectic time integrator to decouple the position and momentum energy terms and facilitate their evolution.

Position

Neural Vortex Method: from Finite Lagrangian Particles to Infinite Dimensional Eulerian Dynamics

no code implementations7 Jun 2020 Shiying Xiong, Xingzhe He, Yunjin Tong, Yitong Deng, Bo Zhu

To tackle this challenge, we propose a novel learning-based framework, the Neural Vortex Method (NVM), which builds a neural-network description of the Lagrangian vortex structures and their interaction dynamics to reconstruct the high-resolution Eulerian flow field in a physically-precise manner.

RoeNets: Predicting Discontinuity of Hyperbolic Systems from Continuous Data

no code implementations7 Jun 2020 Shiying Xiong, Xingzhe He, Yunjin Tong, Runze Liu, Bo Zhu

The ability of our model to predict long-term discontinuity from a short window of continuous training data is in general considered impossible using traditional machine learning approaches.

Symplectic Neural Networks in Taylor Series Form for Hamiltonian Systems

1 code implementation11 May 2020 Yunjin Tong, Shiying Xiong, Xingzhe He, Guanghan Pan, Bo Zhu

We propose an effective and lightweight learning algorithm, Symplectic Taylor Neural Networks (Taylor-nets), to conduct continuous, long-term predictions of a complex Hamiltonian dynamic system based on sparse, short-term observations.

Cannot find the paper you are looking for? You can Submit a new open access paper.