Search Results for author: Weiqi Ji

Found 5 papers, 5 papers with code

Autonomous Kinetic Modeling of Biomass Pyrolysis using Chemical Reaction Neural Networks

1 code implementation24 May 2021 Weiqi Ji, Franz Richter, Michael J. Gollner, Sili Deng

The approach incorporated the CRNN model into the framework of neural ordinary differential equations to predict the residual mass in TGA data.

Inference of cell dynamics on perturbation data using adjoint sensitivity

1 code implementation13 Apr 2021 Weiqi Ji, Bo Yuan, Ciyue Shen, Aviv Regev, Chris Sander, Sili Deng

While there is no analogous ground truth for real life biological systems, this work demonstrates the ability to construct and parameterize a considerable diversity of network models with high predictive ability.

Stiff Neural Ordinary Differential Equations

1 code implementation29 Mar 2021 Suyong Kim, Weiqi Ji, Sili Deng, Yingbo Ma, Christopher Rackauckas

We first show the challenges of learning neural ODE in the classical stiff ODE systems of Robertson's problem and propose techniques to mitigate the challenges associated with scale separations in stiff systems.

Time Series Time Series Analysis

Autonomous Discovery of Unknown Reaction Pathways from Data by Chemical Reaction Neural Network

1 code implementation20 Feb 2020 Weiqi Ji, Sili Deng

Here, we present a neural network approach that autonomously discovers reaction pathways from the time-resolved species concentration data.

Time Series Analysis

Uncertainty Propagation in Deep Neural Network Using Active Subspace

1 code implementation10 Mar 2019 Weiqi Ji, Zhuyin Ren, Chung K. Law

This work employs a gradient-based subspace method and response surface technique to accelerate the uncertainty propagation in DNN.

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