Search Results for author: Dongxiao Zhang

Found 48 papers, 8 papers with code

A Phone-based Distributed Ambient Temperature Measurement System with An Efficient Label-free Automated Training Strategy

no code implementations16 Apr 2024 Dayin Chen, Xiaodan Shi, Haoran Zhang, Xuan Song, Dongxiao Zhang, Yuntian Chen, Jinyue Yan

We believe this study has the potential to advance the practical application of phone-based ambient temperature measurement, facilitating energy-saving efforts in buildings.

Federated Learning

Intelligent Chemical Purification Technique Based on Machine Learning

no code implementations14 Apr 2024 Wenchao Wu, Hao Xu, Dongxiao Zhang, Fanyang Mo

We present an innovative of artificial intelligence with column chromatography, aiming to resolve inefficiencies and standardize data collection in chemical separation and purification domain.

Transfer Learning

Focus on Hiders: Exploring Hidden Threats for Enhancing Adversarial Training

no code implementations12 Dec 2023 Qian Li, Yuxiao Hu, Yinpeng Dong, Dongxiao Zhang, Yuntian Chen

Adversarial training is often formulated as a min-max problem, however, concentrating only on the worst adversarial examples causes alternating repetitive confusion of the model, i. e., previously defended or correctly classified samples are not defensible or accurately classifiable in subsequent adversarial training.

AS-XAI: Self-supervised Automatic Semantic Interpretation for CNN

no code implementations2 Dec 2023 Changqi Sun, Hao Xu, Yuntian Chen, Dongxiao Zhang

Explainable artificial intelligence (XAI) aims to develop transparent explanatory approaches for "black-box" deep learning models.

Explainable artificial intelligence Explainable Artificial Intelligence (XAI)

QIENet: Quantitative irradiance estimation network using recurrent neural network based on satellite remote sensing data

no code implementations1 Dec 2023 Longfeng Nie, Yuntian Chen, Dongxiao Zhang, Xinyue Liu, Wentian Yuan

Specifically, the temporal and spatial characteristics of remote sensing data of the satellite Himawari-8 are extracted and fused by recurrent neural network (RNN) and convolution operation, respectively.

A knowledge-based data-driven (KBDD) framework for all-day identification of cloud types using satellite remote sensing

no code implementations1 Dec 2023 Longfeng Nie, Yuntian Chen, Mengge Du, Changqi Sun, Dongxiao Zhang

Compared with widely used semantic segmentation networks, including SegNet, PSPNet, DeepLabV3+, UNet, and ResUnet, our proposed model CldNet with an accuracy of 80. 89+-2. 18% is state-of-the-art in identifying cloud types and has increased by 32%, 46%, 22%, 2%, and 39%, respectively.

Semantic Segmentation

Interpretable AI-Driven Discovery of Terrain-Precipitation Relationships for Enhanced Climate Insights

no code implementations27 Sep 2023 Hao Xu, Yuntian Chen, Zhenzhong Zeng, Nina Li, Jian Li, Dongxiao Zhang

Through this AI-driven knowledge discovery, we uncover previously undisclosed explicit equations that shed light on the connection between terrain features and precipitation patterns.

Precipitation Forecasting

Crack-Net: Prediction of Crack Propagation in Composites

no code implementations24 Sep 2023 Hao Xu, Wei Fan, Ambrose C. Taylor, Dongxiao Zhang, Lecheng Ruan, Rundong Shi

Computational solid mechanics has become an indispensable approach in engineering, and numerical investigation of fracture in composites is essential as composites are widely used in structural applications.

Transfer Learning

Physics-constrained robust learning of open-form PDEs from limited and noisy data

no code implementations14 Sep 2023 Mengge Du, Longfeng Nie, Siyu Lou, Yuntian Chenc, Dongxiao Zhang

The embedding phase integrates the initially identified PDE from the discovering process as a physical constraint into the predictive model for robust training.

Reinforcement Learning (RL)

Worth of knowledge in deep learning

1 code implementation3 Jul 2023 Hao Xu, Yuntian Chen, Dongxiao Zhang

Our model-agnostic framework can be applied to a variety of common network architectures, providing a comprehensive understanding of the role of prior knowledge in deep learning models.

Interpretable Machine Learning

Discrete Point-wise Attack Is Not Enough: Generalized Manifold Adversarial Attack for Face Recognition

1 code implementation CVPR 2023 Qian Li, Yuxiao Hu, Ye Liu, Dongxiao Zhang, Xin Jin, Yuntian Chen

Classical adversarial attacks for Face Recognition (FR) models typically generate discrete examples for target identity with a single state image.

Adversarial Attack Data Augmentation +1

Retention Time Prediction for Chromatographic Enantioseparation by Quantile Geometry-enhanced Graph Neural Network

no code implementations7 Nov 2022 Hao Xu, Jinglong Lin, Dongxiao Zhang, Fanyang Mo

A new research framework is proposed to incorporate machine learning techniques into the field of experimental chemistry to facilitate chromatographic enantioseparation.

TgDLF2.0: Theory-guided deep-learning for electrical load forecasting via Transformer and transfer learning

no code implementations5 Oct 2022 Jiaxin Gao, WenBo Hu, Dongxiao Zhang, Yuntian Chen

Accurate electrical load forecasting is beneficial for better scheduling of electricity generation and saving electrical energy.

Load Forecasting Scheduling +1

Discovery of partial differential equations from highly noisy and sparse data with physics-informed information criterion

1 code implementation5 Aug 2022 Hao Xu, Junsheng Zeng, Dongxiao Zhang

The PIC is also employed to discover unrevealed macroscale governing equations from microscopic simulation data in an actual physical scene.

Interpretable machine learning optimization (InterOpt) for operational parameters: a case study of highly-efficient shale gas development

no code implementations20 Jun 2022 Yuntian Chen, Dongxiao Zhang, Qun Zhao, Dexun Liu

An algorithm named InterOpt for optimizing operational parameters is proposed based on interpretable machine learning, and is demonstrated via optimization of shale gas development.

BIG-bench Machine Learning Interpretable Machine Learning

Uncertainty quantification of two-phase flow in porous media via coupled-TgNN surrogate model

no code implementations28 May 2022 Jian Li, Dongxiao Zhang, Tianhao He, Qiang Zheng

In this work, a novel coupled theory-guided neural network (TgNN) based surrogate model is built to facilitate computation efficiency under the premise of satisfactory accuracy.

Uncertainty Quantification

AutoKE: An automatic knowledge embedding framework for scientific machine learning

1 code implementation11 May 2022 Mengge Du, Yuntian Chen, Dongxiao Zhang

Imposing physical constraints on neural networks as a method of knowledge embedding has achieved great progress in solving physical problems described by governing equations.

BIG-bench Machine Learning Neural Architecture Search +1

Inferring electrochemical performance and parameters of Li-ion batteries based on deep operator networks

no code implementations6 May 2022 Qiang Zheng, Xiaoguang Yin, Dongxiao Zhang

To realize accuracy and efficiency simultaneously in battery modeling, we propose to build a data-driven surrogate for a battery system while incorporating the underlying physics as constraints.

Management

Identification of Physical Processes and Unknown Parameters of 3D Groundwater Contaminant Problems via Theory-guided U-net

no code implementations30 Apr 2022 Tianhao He, Haibin Chang, Dongxiao Zhang

Furthermore, based on the constructed TgU-net surrogate, a data assimilation method is employed to identify the physical process and parameters simultaneously.

Model Selection

Semantic interpretation for convolutional neural networks: What makes a cat a cat?

no code implementations16 Apr 2022 Hao Xu, Yuntian Chen, Dongxiao Zhang

The interpretability of deep neural networks has attracted increasing attention in recent years, and several methods have been created to interpret the "black box" model.

Explainable Artificial Intelligence (XAI) Superpixels

Deep learning based closed-loop optimization of geothermal reservoir production

no code implementations15 Apr 2022 Nanzhe Wang, Haibin Chang, Xiangzhao Kong, Martin O. Saar, Dongxiao Zhang

In this work, we propose a closed-loop optimization framework, based on deep learning surrogates, for the well control optimization of geothermal reservoirs.

Management

Integration of knowledge and data in machine learning

no code implementations15 Feb 2022 Yuntian Chen, Dongxiao Zhang

Scientific research's mandate is to comprehend and explore the world, as well as to improve it based on experience and knowledge.

BIG-bench Machine Learning Common Sense Reasoning

Deep-learning-based upscaling method for geologic models via theory-guided convolutional neural network

no code implementations31 Dec 2021 Nanzhe Wang, Qinzhuo Liao, Haibin Chang, Dongxiao Zhang

The results show that the deep learning method can provide equivalent upscaling accuracy to the numerical method, and efficiency can be improved significantly compared to numerical upscaling.

Uncertainty quantification and inverse modeling for subsurface flow in 3D heterogeneous formations using a theory-guided convolutional encoder-decoder network

no code implementations14 Nov 2021 Rui Xu, Dongxiao Zhang, Nanzhe Wang

The surrogate models are used to conduct uncertainty quantification considering a stochastic permeability field, as well as to infer unknown permeability information based on limited well production data and observation data of formation properties.

Computational Efficiency Uncertainty Quantification

Surrogate and inverse modeling for two-phase flow in porous media via theory-guided convolutional neural network

no code implementations12 Oct 2021 Nanzhe Wang, Haibin Chang, Dongxiao Zhang

Pressure and saturation are coupled with each other in the governing equations, and thus the two networks are also mutually conditioned in the training process by the discretized governing equations, which also increases the difficulty of model training.

An Adaptive Deep Learning Framework for Day-ahead Forecasting of Photovoltaic Power Generation

no code implementations28 Sep 2021 Xing Luo, Dongxiao Zhang

Consequently, to improve day-ahead PVPG forecasting accuracy, as well as eliminate the impacts of concept drift, this paper proposes an adaptive LSTM (AD-LSTM) model, which is a DL framework that can not only acquire general knowledge from historical data, but also dynamically learn specific knowledge from newly-arrived data.

General Knowledge

Constructing Sub-scale Surrogate Model for Proppant Settling in Inclined Fractures from Simulation Data with Multi-fidelity Neural Network

no code implementations25 Sep 2021 Pengfei Tang, Junsheng Zeng, Dongxiao Zhang, Heng Li

The results demonstrate that constructing the settling surrogate with the MFNN can reduce the need for high-fidelity data and thus computational cost by 80%, while the accuracy lost is less than 5% compared to a high-fidelity surrogate.

RockGPT: Reconstructing three-dimensional digital rocks from single two-dimensional slice from the perspective of video generation

no code implementations5 Aug 2021 Qiang Zheng, Dongxiao Zhang

In order to obtain diverse reconstructions, the discrete latent codes are modeled using conditional GPT in an autoregressive manner, while incorporating conditional information from a given slice, rock type, and porosity.

Video Generation

Any equation is a forest: Symbolic genetic algorithm for discovering open-form partial differential equations (SGA-PDE)

2 code implementations9 Jun 2021 Yuntian Chen, Yingtao Luo, Qiang Liu, Hao Xu, Dongxiao Zhang

Partial differential equations (PDEs) are concise and understandable representations of domain knowledge, which are essential for deepening our understanding of physical processes and predicting future responses.

Robust discovery of partial differential equations in complex situations

no code implementations31 May 2021 Hao Xu, Dongxiao Zhang

In the framework, a preliminary result of potential terms provided by the deep learning-genetic algorithm is added into the loss function of the PINN as physical constraints to improve the accuracy of derivative calculation.

Deep-Learning Discovers Macroscopic Governing Equations for Viscous Gravity Currents from Microscopic Simulation Data

no code implementations31 May 2021 Junsheng Zeng, Hao Xu, Yuntian Chen, Dongxiao Zhang

Although deep-learning has been successfully applied in a variety of science and engineering problems owing to its strong high-dimensional nonlinear mapping capability, it is of limited use in scientific knowledge discovery.

Digital rock reconstruction with user-defined properties using conditional generative adversarial networks

no code implementations29 Nov 2020 Qiang Zheng, Dongxiao Zhang

In fact, the proposed framework can realize the targets of MPS and TPS simultaneously by incorporating high-order information directly from rock images with the GANs scheme, while preserving low-order counterparts through conditioning.

Deep-learning based discovery of partial differential equations in integral form from sparse and noisy data

no code implementations24 Nov 2020 Hao Xu, Dongxiao Zhang, Nanzhe Wang

Our proposed algorithm is also able to discover PDEs with high-order derivatives or heterogeneous parameters accurately with sparse and noisy data.

Theory-guided Auto-Encoder for Surrogate Construction and Inverse Modeling

no code implementations17 Nov 2020 Nanzhe Wang, Haibin Chang, Dongxiao Zhang

In order to achieve the theory-guided training, the governing equations of the studied problems can be discretized and the finite difference scheme of the equations can be embedded into the training of CNN.

Uncertainty Quantification

Weak Form Theory-guided Neural Network (TgNN-wf) for Deep Learning of Subsurface Single and Two-phase Flow

no code implementations8 Sep 2020 Rui Xu, Dongxiao Zhang, Miao Rong, Nanzhe Wang

In the weak form, high order derivatives in the PDE can be transferred to the test functions by performing integration-by-parts, which reduces computational error.

A Lagrangian Dual-based Theory-guided Deep Neural Network

no code implementations24 Aug 2020 Miao Rong, Dongxiao Zhang, Nanzhe Wang

In this paper, the Lagrangian dual-based TgNN (TgNN-LD) is proposed to improve the effectiveness of TgNN.

Deep-Learning based Inverse Modeling Approaches: A Subsurface Flow Example

no code implementations28 Jul 2020 Nanzhe Wanga, Haibin Changa, Dongxiao Zhang

The first category is deep-learning surrogate-based inversion methods, in which the Theory-guided Neural Network (TgNN) is constructed as a deep-learning surrogate for problems with uncertain model parameters.

Deep Learning of Dynamic Subsurface Flow via Theory-guided Generative Adversarial Network

no code implementations2 Jun 2020 Tianhao He, Dongxiao Zhang

In this study, a theory-guided generative adversarial network (TgGAN) is proposed to solve dynamic partial differential equations (PDEs).

Generative Adversarial Network Transfer Learning

Deep-learning of Parametric Partial Differential Equations from Sparse and Noisy Data

no code implementations16 May 2020 Hao Xu, Dongxiao Zhang, Junsheng Zeng

Next, genetic algorithm is utilized to discover the form of PDEs and corresponding coefficients with an incomplete candidate library.

Ensemble long short-term memory (EnLSTM) network

1 code implementation26 Apr 2020 Yuntian Chen, Dongxiao Zhang

In this study, we propose an ensemble long short-term memory (EnLSTM) network, which can be trained on a small dataset and process sequential data.

Small Data Image Classification

Physics-constrained indirect supervised learning

no code implementations26 Apr 2020 Yuntian Chen, Dongxiao Zhang

In the training process, the model prediction is mapped to the space of value that conforms to the physical mechanism through the projection matrix, and then the model is trained based on the indirect labels.

DLGA-PDE: Discovery of PDEs with incomplete candidate library via combination of deep learning and genetic algorithm

no code implementations21 Jan 2020 Hao Xu, Haibin Chang, Dongxiao Zhang

In the proposed framework, a deep neural network that is trained with available data of a physical problem is utilized to generate meta-data and calculate derivatives, and the genetic algorithm is then employed to discover the underlying PDE.

Deep Learning of Subsurface Flow via Theory-guided Neural Network

no code implementations24 Oct 2019 Nanzhe Wang, Dongxiao Zhang, Haibin Chang, Heng Li

The TgNN can achieve higher accuracy than the ordinary Artificial Neural Network (ANN) because the former provides physically feasible predictions and can be more readily generalized beyond the regimes covered with the training data.

Transfer Learning

DL-PDE: Deep-learning based data-driven discovery of partial differential equations from discrete and noisy data

no code implementations13 Aug 2019 Hao Xu, Haibin Chang, Dongxiao Zhang

However, prior to achieving this goal, major challenges remain to be resolved, including learning PDE under noisy data and limited discrete data.

Identification of physical processes via combined data-driven and data-assimilation methods

no code implementations29 Oct 2018 Haibin Chang, Dongxiao Zhang

Using the training data set, a data-driven method is developed to learn the governing equation of the considered physical problem by identifying the occurred (or dominated) processes and selecting the proper empirical model.

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