Search Results for author: Antonios Tsourdos

Found 19 papers, 3 papers with code

Two-Stage Violence Detection Using ViTPose and Classification Models at Smart Airports

1 code implementation30 Aug 2023 İrem Üstek, Jay Desai, Iván López Torrecillas, Sofiane Abadou, Jinjie Wang, Quentin Fever, Sandhya Rani Kasthuri, Yang Xing, Weisi Guo, Antonios Tsourdos

This study introduces an innovative violence detection framework tailored to the unique requirements of smart airports, where prompt responses to violent situations are crucial.

Decision Making Pose Estimation

Dynamic deep-reinforcement-learning algorithm in Partially Observed Markov Decision Processes

no code implementations29 Jul 2023 Saki Omi, Hyo-Sang Shin, Namhoon Cho, Antonios Tsourdos

Reinforcement learning has been greatly improved in recent studies and an increased interest in real-world implementation has emerged in recent years.

reinforcement-learning

Region of Attraction Estimation Using Union Theorem in Sum-of-Squares Optimization

no code implementations19 May 2023 Bhaskar Biswas, Dmitry Ignatyev, Argyrios Zolotas, Antonios Tsourdos

The main novelty of this paper is the Union theorem which enables the use of multiple shape functions to create a polynomial Lyapunov function encompassing all the areas generated by the shape functions.

An Auction-based Coordination Strategy for Task-Constrained Multi-Agent Stochastic Planning with Submodular Rewards

no code implementations30 Dec 2022 Ruifan Liu, Hyo-Sang Shin, Binbin Yan, Antonios Tsourdos

In many domains such as transportation and logistics, search and rescue, or cooperative surveillance, tasks are pending to be allocated with the consideration of possible execution uncertainties.

Incremental Correction in Dynamic Systems Modelled with Neural Networks for Constraint Satisfaction

no code implementations8 Sep 2022 Namhoon Cho, Hyo-Sang Shin, Antonios Tsourdos, Davide Amato

This study presents incremental correction methods for refining neural network parameters or control functions entering into a continuous-time dynamic system to achieve improved solution accuracy in satisfying the interim point constraints placed on the performance output variables.

A Transistor Operations Model for Deep Learning Energy Consumption Scaling Law

no code implementations30 May 2022 Chen Li, Antonios Tsourdos, Weisi Guo

At a general computational energy model level, there is both strong dependency to both the hardware architecture (e. g. generic processors with different configuration of inner components- CPU and GPU, programmable integrated circuits - FPGA), as well as different interacting energy consumption aspects (e. g., data movement, calculation, control).

Two-timescale Resource Allocation for Automated Networks in IIoT

no code implementations24 Mar 2022 Yanhua He, Yun Ren, Zhenyu Zhou, Shahid Mumtaz, Saba Al-Rubaye, Antonios Tsourdos, Octavia A. Dobre

The rapid technological advances of cellular technologies will revolutionize network automation in industrial internet of things (IIoT).

energy management Management +2

Bayesian Learning Approach to Model Predictive Control

no code implementations5 Mar 2022 Namhoon Cho, Seokwon Lee, Hyo-Sang Shin, Antonios Tsourdos

High-level frameworks have been developed separately in the earlier studies on Bayesian learning and sampling-based model predictive control.

Model Predictive Control

Scarce Data Driven Deep Learning of Drones via Generalized Data Distribution Space

no code implementations18 Aug 2021 Chen Li, Schyler C. Sun, Zhuangkun Wei, Antonios Tsourdos, Weisi Guo

We believe that this approach of exploiting general data distribution knowledge form neural networks can be applied to a wide range of scarce data open challenges.

Data Augmentation Generative Adversarial Network +2

A Learning-Based Computational Impact Time Guidance

no code implementations9 Mar 2021 Zichao Liu, Jiang Wang, Shaoming He, Hyo-Sang Shin, Antonios Tsourdos

This paper investigates the problem of impact-time-control and proposes a learning-based computational guidance algorithm to solve this problem.

reinforcement-learning Reinforcement Learning (RL)

RoIFusion: 3D Object Detection from LiDAR and Vision

no code implementations9 Sep 2020 Can Chen, Luca Zanotti Fragonara, Antonios Tsourdos

When localizing and detecting 3D objects for autonomous driving scenes, obtaining information from multiple sensor (e. g. camera, LIDAR) typically increases the robustness of 3D detectors.

3D Object Detection Autonomous Driving +2

Scalable Partial Explainability in Neural Networks via Flexible Activation Functions

no code implementations10 Jun 2020 Schyler C. Sun, Chen Li, Zhuangkun Wei, Antonios Tsourdos, Weisi Guo

In this paper, we achieve partially explainable learning model by symbolically explaining the role of activation functions (AF) under a scalable topology.

Binary Classification Gaussian Processes

Improving Learning Effectiveness For Object Detection and Classification in Cluttered Backgrounds

no code implementations27 Feb 2020 Vinorth Varatharasan, Hyo-Sang Shin, Antonios Tsourdos, Nick Colosimo

The performance of the proposed framework is investigated through empirical tests and compared with that of the model trained with the COCO dataset.

General Classification Image Segmentation +3

Go Wider: An Efficient Neural Network for Point Cloud Analysis via Group Convolutions

no code implementations23 Sep 2019 Can Chen, Luca Zanotti Fragonara, Antonios Tsourdos

Unlike conventional operation that directly applies MLPs on high-dimensional features of point cloud, our model goes wider by splitting features into groups in advance, and each group with certain smaller depth is only responsible for respective MLP operation, which can reduce complexity and allows to encode more useful information.

Autonomous Driving Efficient Neural Network +1

A Domain-Knowledge-Aided Deep Reinforcement Learning Approach for Flight Control Design

no code implementations19 Aug 2019 Hyo-Sang Shin, Shaoming He, Antonios Tsourdos

This paper aims to examine the potential of using the emerging deep reinforcement learning techniques in flight control.

Learning Theory reinforcement-learning +1

Fast Hierarchical Neural Network for Feature Learning on Point Cloud

no code implementations10 Jun 2019 Can Chen, Luca Zanotti Fragonara, Antonios Tsourdos

In order to balance model performance and complexity, we introduce a novel neural network architecture exploiting local features from a manually subsampled point set.

GAPNet: Graph Attention based Point Neural Network for Exploiting Local Feature of Point Cloud

3 code implementations21 May 2019 Can Chen, Luca Zanotti Fragonara, Antonios Tsourdos

In this paper, we propose a novel neural network for point cloud, dubbed GAPNet, to learn local geometric representations by embedding graph attention mechanism within stacked Multi-Layer-Perceptron (MLP) layers.

Graph Attention

Anonymous Hedonic Game for Task Allocation in a Large-Scale Multiple Agent System

1 code implementation18 Nov 2017 Inmo Jang, Hyo-Sang Shin, Antonios Tsourdos

This paper proposes a novel game-theoretical autonomous decision-making framework to address a task allocation problem for a swarm of multiple agents.

Decision Making

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