Search Results for author: Saif Eddin Jabari

Found 15 papers, 1 papers with code

Fourier neural operator for learning solutions to macroscopic traffic flow models: Application to the forward and inverse problems

no code implementations14 Aug 2023 Bilal Thonnam Thodi, Sai Venkata Ramana Ambadipudi, Saif Eddin Jabari

In this framework, an operator is trained to map heterogeneous and sparse traffic input data to the complete macroscopic traffic state in a supervised learning setting.

Physical Backdoor Trigger Activation of Autonomous Vehicle using Reachability Analysis

no code implementations24 Mar 2023 Wenqing Li, Yue Wang, Muhammad Shafique, Saif Eddin Jabari

Recent studies reveal that Autonomous Vehicles (AVs) can be manipulated by hidden backdoors, causing them to perform harmful actions when activated by physical triggers.

Autonomous Vehicles

Optimal Smoothing Distribution Exploration for Backdoor Neutralization in Deep Learning-based Traffic Systems

no code implementations24 Mar 2023 Yue Wang, Wending Li, Michail Maniatakos, Saif Eddin Jabari

The effectiveness of the proposed method is verified on a simulated traffic system based on a microscopic traffic simulator, where experimental results showcase that the smoothed traffic controller can neutralize all trigger samples and maintain the performance of relieving traffic congestion

Autonomous Vehicles Image Classification

Learning-based solutions to nonlinear hyperbolic PDEs: Empirical insights on generalization errors

no code implementations16 Feb 2023 Bilal Thonnam Thodi, Sai Venkata Ramana Ambadipudi, Saif Eddin Jabari

We empirically quantify the generalization/out-of-sample error of the $\pi$-FNO solver as a function of input complexity, i. e., the distributions of initial and boundary conditions.

Generalized adaptive smoothing based neural network architecture for traffic state estimation

no code implementations9 Jan 2023 Chuhan Yang, Sai Venkata Ramana Ambadipudi, Saif Eddin Jabari

In this work, we propose a neural network based on the ASM which tunes those parameters automatically by learning from sparse data from road sensors.

PiDAn: A Coherence Optimization Approach for Backdoor Attack Detection and Mitigation in Deep Neural Networks

no code implementations17 Mar 2022 Yue Wang, Wenqing Li, Esha Sarkar, Muhammad Shafique, Michail Maniatakos, Saif Eddin Jabari

Based on our theoretical analysis and experimental results, we demonstrate the effectiveness of PiDAn in defending against backdoor attacks that use different settings of poisoned samples on GTSRB and ILSVRC2012 datasets.

Anomaly Detection Backdoor Attack

Learning Traffic Speed Dynamics from Visualizations

no code implementations4 May 2021 Bilal Thonnam Thodi, Zaid Saeed Khan, Saif Eddin Jabari, Monica Menendez

We present a deep learning method to learn the macroscopic traffic speed dynamics from these space-time visualizations, and demonstrate its application in the framework of traffic state estimation.

Incorporating Kinematic Wave Theory into a Deep Learning Method for High-Resolution Traffic Speed Estimation

no code implementations4 Feb 2021 Bilal Thonnam Thodi, Zaid Saeed Khan, Saif Eddin Jabari, Monica Menendez

The results demonstrate that anisotropic kernels significantly reduce model complexity and model over-fitting, and improve the physical correctness of the estimated speed fields.

A Real-Time Dispatching Strategy for Shared Automated Electric Vehicles with Performance Guarantees

no code implementations28 Jun 2020 Li Li, Theodoros Pantelidis, Joseph Y. J. Chow, Saif Eddin Jabari

To overcome this complexity, we employ an online minimum drift plus penalty (MDPP) approach for SAEV systems that (i) does not require a priori knowledge of customer arrival rates to the different parts of the system (i. e. it is practical from a real-world deployment perspective), (ii) ensures the stability of customer waiting times, (iii) ensures that the deviation of dispatch costs from a desirable dispatch cost can be controlled, and (iv) has a computational time-complexity that allows for real-time implementation.

Scheduling

Short-Term Traffic Forecasting Using High-Resolution Traffic Data

no code implementations22 Jun 2020 Wenqing Li, Chuhan Yang, Saif Eddin Jabari

The formulation allows us to capture both nonlinear dependencies between forecasting inputs and outputs but also allows us to capture dependencies among the inputs.

Matrix Completion Time Series +2

Traffic Data Imputation using Deep Convolutional Neural Networks

1 code implementation21 Jan 2020 Ouafa Benkraouda, Bilal Thonnam Thodi, Hwasoo Yeo, Monica Menendez, Saif Eddin Jabari

We propose a statistical learning-based traffic speed estimation method that uses sparse vehicle trajectory information.

Imputation Traffic Data Imputation

Nonlinear Traffic Prediction as a Matrix Completion Problem with Ensemble Learning

no code implementations8 Jan 2020 Wenqing Li, Chuhan Yang, Saif Eddin Jabari

This paper addresses the problem of short-term traffic prediction for signalized traffic operations management.

Ensemble Learning Management +2

Learning Traffic Flow Dynamics using Random Fields

no code implementations22 Jun 2018 Saif Eddin Jabari, Deepthi Mary Dilip, DianChao Lin, Bilal Thonnam Thodi

This paper presents a mesoscopic traffic flow model that explicitly describes the spatio-temporal evolution of the probability distributions of vehicle trajectories.

Autonomous Vehicles

Sparse Travel Time Estimation from Streaming Data

no code implementations22 Apr 2018 Saif Eddin Jabari, Nikolaos M. Freris, Deepthi Mary Dilip

The second shortcoming is the wide-spread use of Gaussian probability densities as mixture components.

Travel Time Estimation

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