Search Results for author: Qiang Zheng

Found 9 papers, 0 papers with code

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

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

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

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.

Using Deep Learning to Improve Ensemble Smoother: Applications to Subsurface Characterization

no code implementations21 Feb 2020 Jiangjiang Zhang, Qiang Zheng, Laosheng Wu, Lingzao Zeng

In this new update scheme, a high volume of training data are generated from a relatively small-sized ensemble of model parameters and simulation outputs, and possible non-Gaussian features can be preserved in the training data and captured by an adequate DL model.

Physics-informed semantic inpainting: Application to geostatistical modeling

no code implementations19 Sep 2019 Qiang Zheng, Lingzao Zeng, Zhendan Cao, George Em. Karniadakis

A fundamental problem in geostatistical modeling is to infer the heterogeneous geological field based on limited measurements and some prior spatial statistics.

Generative Adversarial Network

Transfer learning for diagnosis of congenital abnormalities of the kidney and urinary tract in children based on Ultrasound imaging data

no code implementations31 Dec 2017 Qiang Zheng, Gregory Tasian, Yong Fan

In this study, we propose a transfer learning-based method to extract imaging features from US kidney images in order to improve the CAKUT diagnosis in children.

Classification General Classification +1

Integrating semi-supervised label propagation and random forests for multi-atlas based hippocampus segmentation

no code implementations31 Dec 2017 Qiang Zheng, Yong Fan

The semi-supervised label propagation method takes into consideration local and global image appearance of images to be segmented and segments the images by propagating reliable segmentation results obtained by the supervised random forests method.

Hippocampus Image Segmentation +3

A dynamic graph-cuts method with integrated multiple feature maps for segmenting kidneys in ultrasound images

no code implementations11 Jun 2017 Qiang Zheng, Steven Warner, Gregory Tasian, Yong Fan

The proposed method has been evaluated and compared with state of the art image segmentation methods based on clinical kidney US images of 85 subjects.

Computational Efficiency Image Segmentation +2

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