Search Results for author: Hadi Meidani

Found 16 papers, 2 papers with code

Physics-informed Mesh-independent Deep Compositional Operator Network

no code implementations21 Apr 2024 Weiheng Zhong, Hadi Meidani

However, the training of neural operators typically demands large training datasets, the acquisition of which can be prohibitively expensive.

Heterogeneous Graph Neural Networks for End-to-End Traffic Assignment and Traffic Flow Learning

no code implementations19 Oct 2023 Tong Liu, Hadi Meidani

The traffic assignment problem is one of the significant components of traffic flow analysis for which various solution approaches have been proposed.

Graph Attention Management

GNN-based physics solver for time-independent PDEs

no code implementations28 Mar 2023 Rini Jasmine Gladstone, Helia Rahmani, Vishvas Suryakumar, Hadi Meidani, Marta D'Elia, Ahmad Zareei

Physics-based deep learning frameworks have shown to be effective in accurately modeling the dynamics of complex physical systems with generalization capability across problem inputs.

FO-PINNs: A First-Order formulation for Physics Informed Neural Networks

no code implementations25 Oct 2022 Rini J. Gladstone, Mohammad A. Nabian, N. Sukumar, Ankit Srivastava, Hadi Meidani

Physics-Informed Neural Networks (PINNs) are a class of deep learning neural networks that learn the response of a physical system without any simulation data, and only by incorporating the governing partial differential equations (PDEs) in their loss function.

Time Series Synthesis via Multi-scale Patch-based Generation of Wavelet Scalogram

no code implementations21 Oct 2022 Amir Kazemi, Hadi Meidani

A framework is proposed for the unconditional generation of synthetic time series based on learning from a single sample in low-data regime case.

Time Series Time Series Analysis

Graph Neural Network Surrogate for Seismic Reliability Analysis of Highway Bridge Systems

no code implementations12 Oct 2022 Tong Liu, Hadi Meidani

Rapid reliability assessment of transportation networks can enhance preparedness, risk mitigation, and response management procedures related to these systems.

Computational Efficiency Management

Explainable Graph Pyramid Autoformer for Long-Term Traffic Forecasting

1 code implementation27 Sep 2022 Weiheng Zhong, Tanwi Mallick, Hadi Meidani, Jane Macfarlane, Prasanna Balaprakash

Moreover, most of the existing deep learning traffic forecasting models are black box, presenting additional challenges related to explainability and interpretability.

Temporal Sequences

PI-VAE: Physics-Informed Variational Auto-Encoder for stochastic differential equations

1 code implementation21 Mar 2022 Weiheng Zhong, Hadi Meidani

We propose a new class of physics-informed neural networks, called physics-informed Variational Autoencoder (PI-VAE), to solve stochastic differential equations (SDEs) or inverse problems involving SDEs.

Generative Adversarial Network

Robust Topology Optimization Using Variational Autoencoders

no code implementations19 Jul 2021 Rini Jasmine Gladstone, Mohammad Amin Nabian, Vahid Keshavarzzadeh, Hadi Meidani

Robust topology optimization (RTO) also incorporates the effect of input uncertainties and produces a design with the best average performance of the structure while reducing the response sensitivity to input uncertainties.

Efficient training of physics-informed neural networks via importance sampling

no code implementations26 Apr 2021 Mohammad Amin Nabian, Rini Jasmine Gladstone, Hadi Meidani

This importance sampling approach is straightforward and easy to implement in the existing PINN codes, and also does not introduce any new hyperparameter to calibrate.

Computational Efficiency

IGANI: Iterative Generative Adversarial Networks for Imputation with Application to Traffic Data

no code implementations11 Aug 2020 Amir Kazemi, Hadi Meidani

Increasing use of sensor data in intelligent transportation systems calls for accurate imputation algorithms that can enable reliable traffic management in the occasional absence of data.

Imputation Management +1

Adaptive Physics-Informed Neural Networks for Markov-Chain Monte Carlo

no code implementations3 Aug 2020 Mohammad Amin Nabian, Hadi Meidani

In this paper, we propose the Adaptive Physics-Informed Neural Networks (APINNs) for accurate and efficient simulation-free Bayesian parameter estimation via Markov-Chain Monte Carlo (MCMC).

Physics-Driven Regularization of Deep Neural Networks for Enhanced Engineering Design and Analysis

no code implementations11 Oct 2018 Mohammad Amin Nabian, Hadi Meidani

In this paper, we introduce a physics-driven regularization method for training of deep neural networks (DNNs) for use in engineering design and analysis problems.

A Deep Neural Network Surrogate for High-Dimensional Random Partial Differential Equations

no code implementations8 Jun 2018 Mohammad Amin Nabian, Hadi Meidani

Developing efficient numerical algorithms for the solution of high dimensional random Partial Differential Equations (PDEs) has been a challenging task due to the well-known curse of dimensionality.

Deep Learning for Accelerated Reliability Analysis of Infrastructure Networks

no code implementations28 Aug 2017 Mohammad Amin Nabian, Hadi Meidani

This paper presents a deep learning framework for accelerating infrastructure system reliability analysis.

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