Search Results for author: Qiang Du

Found 14 papers, 3 papers with code

Discovering State Variables Hidden in Experimental Data

1 code implementation20 Dec 2021 Boyuan Chen, Kuang Huang, Sunand Raghupathi, Ishaan Chandratreya, Qiang Du, Hod Lipson

All physical laws are described as relationships between state variables that give a complete and non-redundant description of the relevant system dynamics.

Symbolic Regression

A Physics-Informed Deep Learning Paradigm for Traffic State and Fundamental Diagram Estimation

no code implementations6 Jun 2021 Rongye Shi, Zhaobin Mo, Kuang Huang, Xuan Di, Qiang Du

Traffic state estimation (TSE) bifurcates into two categories, model-driven and data-driven (e. g., machine learning, ML), while each suffers from either deficient physics or small data.

Relation

The Discovery of Dynamics via Linear Multistep Methods and Deep Learning: Error Estimation

1 code implementation21 Mar 2021 Qiang Du, Yiqi Gu, Haizhao Yang, Chao Zhou

We put forward error estimates for these methods using the approximation property of deep networks.

A fast two-stage algorithm for non-negative matrix factorization in streaming data

no code implementations21 Jan 2021 Ran Gu, Qiang Du, Simon J. L. Billinge

In the second stage, an interior point method is adopted to accelerate the local convergence.

Optimization and Control Numerical Analysis Numerical Analysis 65K10, 90C26 G.1.6; F.2.1

Physics-Informed Deep Learning for Traffic State Estimation

no code implementations17 Jan 2021 Rongye Shi, Zhaobin Mo, Kuang Huang, Xuan Di, Qiang Du

This paper focuses on highway TSE with observed data from loop detectors, using traffic density as the traffic variables.

Dynamic driving and routing games for autonomous vehicles on networks: A mean field game approach

no code implementations15 Dec 2020 Kuang Huang, Xu Chen, Xuan Di, Qiang Du

In this paper, we aim to develop a game-theoretic model to solve for AVs's optimal driving strategies of velocity control in the interior of a road link and route choice at a junction node.

Autonomous Vehicles Decision Making Optimization and Control Systems and Control Systems and Control

A non-cooperative meta-modeling game for automated third-party calibrating, validating, and falsifying constitutive laws with parallelized adversarial attacks

no code implementations13 Apr 2020 Kun Wang, WaiChing Sun, Qiang Du

The evaluation of constitutive models, especially for high-risk and high-regret engineering applications, requires efficient and rigorous third-party calibration, validation and falsification.

reinforcement-learning Reinforcement Learning (RL)

Discovery of Dynamics Using Linear Multistep Methods

no code implementations29 Dec 2019 Rachael Keller, Qiang Du

Linear multistep methods (LMMs) are popular time discretization techniques for the numerical solution of differential equations.

Censored Stable Subordinators and Fractional Derivatives

no code implementations17 Jun 2019 Qiang Du, Lorenzo Toniazzi, Zirui Xu

Based on the popular Caputo fractional derivative of order $\beta$ in $(0, 1)$, we define the censored fractional derivative on the positive half-line $\mathbb R_+$.

Classical Analysis and ODEs Probability 26A33, 60G52, 60G40

A cooperative game for automated learning of elasto-plasticity knowledge graphs and models with AI-guided experimentation

no code implementations8 Mar 2019 Kun Wang, WaiChing Sun, Qiang Du

We introduce a multi-agent meta-modeling game to generate data, knowledge, and models that make predictions on constitutive responses of elasto-plastic materials.

Knowledge Graphs reinforcement-learning +1

Stochastic Training of Residual Networks: a Differential Equation Viewpoint

no code implementations1 Dec 2018 Qi Sun, Yunzhe Tao, Qiang Du

During the last few years, significant attention has been paid to the stochastic training of artificial neural networks, which is known as an effective regularization approach that helps improve the generalization capability of trained models.

Image Classification

Nonlocal Neural Networks, Nonlocal Diffusion and Nonlocal Modeling

no code implementations NeurIPS 2018 Yunzhe Tao, Qi Sun, Qiang Du, Wei Liu

Nonlocal neural networks have been proposed and shown to be effective in several computer vision tasks, where the nonlocal operations can directly capture long-range dependencies in the feature space.

A Reinforced Topic-Aware Convolutional Sequence-to-Sequence Model for Abstractive Text Summarization

no code implementations9 May 2018 Li Wang, Junlin Yao, Yunzhe Tao, Li Zhong, Wei Liu, Qiang Du

In this paper, we propose a deep learning approach to tackle the automatic summarization tasks by incorporating topic information into the convolutional sequence-to-sequence (ConvS2S) model and using self-critical sequence training (SCST) for optimization.

Abstractive Text Summarization Informativeness

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