Search Results for author: Fatemeh Afghah

Found 42 papers, 10 papers with code

FlameFinder: Illuminating Obscured Fire through Smoke with Attentive Deep Metric Learning

no code implementations9 Apr 2024 Hossein Rajoli, Sahand Khoshdel, Fatemeh Afghah, Xiaolong Ma

However, the dominance of center loss over the other losses leads to the model missing features sensitive to them.

Metric Learning

Deciphering Heartbeat Signatures: A Vision Transformer Approach to Explainable Atrial Fibrillation Detection from ECG Signals

no code implementations12 Feb 2024 Aruna Mohan, Danne Elbers, Or Zilbershot, Fatemeh Afghah, David Vorchheimer

These models are applied to the Chapman-Shaoxing dataset to classify atrial fibrillation, as well as another common arrhythmia, sinus bradycardia, and normal sinus rhythm heartbeats.

Atrial Fibrillation Detection

Thermal Image Calibration and Correction using Unpaired Cycle-Consistent Adversarial Networks

no code implementations21 Jan 2024 Hossein Rajoli, Pouya Afshin, Fatemeh Afghah

Unmanned aerial vehicles (UAVs) offer a flexible and cost-effective solution for wildfire monitoring.

Attribute

Hardware Acceleration for Real-Time Wildfire Detection Onboard Drone Networks

1 code implementation16 Jan 2024 Austin Briley, Fatemeh Afghah

Early wildfire detection in remote and forest areas is crucial for minimizing devastation and preserving ecosystems.

Classification Image Classification +1

Open RAN LSTM Traffic Prediction and Slice Management using Deep Reinforcement Learning

no code implementations12 Jan 2024 Fatemeh Lotfi, Fatemeh Afghah

This emphasizes the importance of using the prediction rApp and distributed actors' information jointly as part of a dynamic xApp.

Autonomous Driving Decision Making +2

Dynamic Online Modulation Recognition using Incremental Learning

no code implementations7 Dec 2023 Ali Owfi, Ali Abbasi, Fatemeh Afghah, Jonathan Ashdown, Kurt Turck

This issue renders DL-based modulation recognition models inapplicable in real-world scenarios because the dynamic nature of communication systems necessitate the effective adaptability to new modulation schemes.

Incremental Learning

Attention-based Open RAN Slice Management using Deep Reinforcement Learning

no code implementations15 Jun 2023 Fatemeh Lotfi, Fatemeh Afghah, Jonathan Ashdown

As emerging networks such as Open Radio Access Networks (O-RAN) and 5G continue to grow, the demand for various services with different requirements is increasing.

Decision Making Management +1

ECGBERT: Understanding Hidden Language of ECGs with Self-Supervised Representation Learning

no code implementations10 Jun 2023 Seokmin Choi, Sajad Mousavi, Phillip Si, Haben G. Yhdego, Fatemeh Khadem, Fatemeh Afghah

In the medical field, current ECG signal analysis approaches rely on supervised deep neural networks trained for specific tasks that require substantial amounts of labeled data.

Arrhythmia Detection Heartbeat Classification +3

A Meta-learning based Generalizable Indoor Localization Model using Channel State Information

no code implementations22 May 2023 Ali Owfi, ChunChih Lin, Linke Guo, Fatemeh Afghah, Jonathan Ashdown, Kurt Turck

Indoor localization has gained significant attention in recent years due to its various applications in smart homes, industrial automation, and healthcare, especially since more people rely on their wireless devices for location-based services.

Indoor Localization Meta-Learning

Autoencoder-based Radio Frequency Interference Mitigation For SMAP Passive Radiometer

no code implementations25 Apr 2023 Ali Owfi, Fatemeh Afghah

Passive space-borne radiometers operating in the 1400-1427 MHz protected frequency band face radio frequency interference (RFI) from terrestrial sources.

Towards High-Quality and Efficient Video Super-Resolution via Spatial-Temporal Data Overfitting

1 code implementation CVPR 2023 Gen Li, Jie Ji, Minghai Qin, Wei Niu, Bin Ren, Fatemeh Afghah, Linke Guo, Xiaolong Ma

To reconcile such, we propose a novel method for high-quality and efficient video resolution upscaling tasks, which leverages the spatial-temporal information to accurately divide video into chunks, thus keeping the number of chunks as well as the model size to minimum.

Video Super-Resolution

Synthetic ECG Signal Generation using Probabilistic Diffusion Models

1 code implementation4 Mar 2023 Edmond Adib, Amanda Fernandez, Fatemeh Afghah, John Jeff Prevost

In this work, synthetic ECG signals are generated by the Improved DDPM and by the Wasserstein GAN with Gradient Penalty (WGAN-GP) models and then compared.

Denoising Time Series +1

Evolutionary Deep Reinforcement Learning for Dynamic Slice Management in O-RAN

no code implementations30 Aug 2022 Fatemeh Lotfi, Omid Semiari, Fatemeh Afghah

To solve this problem, a new solution is proposed based on evolutionary-based deep reinforcement learning (EDRL) to accelerate and optimize the slice management learning process in the radio access network's (RAN) intelligent controller (RIC) modules.

Management reinforcement-learning +1

Arrhythmia Classification using CGAN-augmented ECG Signals

1 code implementation26 Jan 2022 Edmond Adib, Fatemeh Afghah, John J. Prevost

We employed two models for ECG generation: (i) unconditional GAN; Wasserstein GAN with gradient penalty (WGAN-GP) is trained on each class individually; (ii) conditional GAN; one Auxiliary Classifier WGAN-GP (AC-WGAN-GP) model is trained on all classes and then used to generate synthetic beats in all classes.

Arrhythmia Detection Classification +2

UAV-Assisted Communication in Remote Disaster Areas using Imitation Learning

no code implementations2 Apr 2021 Alireza Shamsoshoara, Fatemeh Afghah, Erik Blasch, Jonathan Ashdown, Mehdi Bennis

The damage to cellular towers during natural and man-made disasters can disturb the communication services for cellular users.

Imitation Learning Scheduling

Green IoT using UAVs in B5G Networks: A Review of Applications and Strategies

no code implementations31 Mar 2021 S. H. Alsamhi, Fatemeh Afghah, Radhya Sahal, Ammar Hawbani, A. A. Al-qaness, B. Lee, Mohsen Guizani

Due to a drone's capability to fly closer to IoT, UAV technology plays a vital role in greening IoT by transmitting collected data to achieve a sustainable, reliable, eco-friendly Industry 4. 0.

Management

Fully-echoed Q-routing with Simulated Annealing Inference for Flying Adhoc Networks

no code implementations23 Mar 2021 Arnau Rovira-Sugranes, Fatemeh Afghah, Junsuo Qu, Abolfazl Razi

Current networking protocols deem inefficient in accommodating the two key challenges of Unmanned Aerial Vehicle (UAV) networks, namely the network connectivity loss and energy limitations.

A Greedy Graph Search Algorithm Based on Changepoint Analysis for Automatic QRS Complex Detection

no code implementations6 Feb 2021 Atiyeh Fotoohinasab, Toby Hocking, Fatemeh Afghah

First, we define the constraint graph manually; then, we present a graph learning algorithm that can search for an optimal graph in a greedy scheme.

Graph Learning QRS Complex Detection

Aerial Imagery Pile burn detection using Deep Learning: the FLAME dataset

1 code implementation28 Dec 2020 Alireza Shamsoshoara, Fatemeh Afghah, Abolfazl Razi, Liming Zheng, Peter Z Fulé, Erik Blasch

FLAME (Fire Luminosity Airborne-based Machine learning Evaluation) offers a dataset of aerial images of fires along with methods for fire detection and segmentation which can help firefighters and researchers to develop optimal fire management strategies.

BIG-bench Machine Learning Binary Classification +2

An Uncertainty Estimation Framework for Risk Assessment in Deep Learning-based Atrial Fibrillation Classification

no code implementations30 Oct 2020 James Belen, Sajad Mousavi, Alireza Shamsoshoara, Fatemeh Afghah

The uncertainty is estimated by conducting multiple passes of the input through the network to build a distribution; the mean of the standard deviations is reported as the network's uncertainty.

General Classification

Multi-level Feature Learning on Embedding Layer of Convolutional Autoencoders and Deep Inverse Feature Learning for Image Clustering

no code implementations5 Oct 2020 Behzad Ghazanfari, Fatemeh Afghah

This paper introduces Multi-Level feature learning alongside the Embedding layer of Convolutional Autoencoder (CAE-MLE) as a novel approach in deep clustering.

Clustering Deep Clustering +1

Piece-wise Matching Layer in Representation Learning for ECG Classification

no code implementations26 Sep 2020 Behzad Ghazanfari, Fatemeh Afghah, Sixian Zhang

To evaluate the performance of this method in time series analysis, we applied the proposed layer in two publicly available datasets of PhysioNet competitions in 2015 and 2017 where the input data is ECG signal.

Classification ECG Classification +4

Real-time Framework for Trust Monitoring in aNetwork of Unmanned Aerial Vehicles

no code implementations16 Jul 2020 Mahsa Keshavarz, Alireza Shamsoshoara, Fatemeh Afghah, Jonathan Ashdown

Unmanned aerial vehicles (UAVs) have been increasingly utilized in various civilian and military applications such as remote sensing, border patrolling, disaster monitoring, and communication coverage extension.

ECG Language Processing (ELP): a New Technique to Analyze ECG Signals

no code implementations13 Jun 2020 Sajad Mousavi, Fatemeh Afghah, Fatemeh Khadem, U. Rajendra Acharya

For this reason, the ECG signal is a sequence of heartbeats similar to sentences in natural languages) and each heartbeat is composed of a set of waves (similar to words in a sentence) of different morphologies.

Sentence

A Graph-constrained Changepoint Detection Approach for ECG Segmentation

no code implementations24 Apr 2020 Atiyeh Fotoohinasab, Toby Hocking, Fatemeh Afghah

Electrocardiogram (ECG) signal is the most commonly used non-invasive tool in the assessment of cardiovascular diseases.

QRS Complex Detection Time Series +1

Deep Inverse Feature Learning: A Representation Learning of Error

no code implementations9 Mar 2020 Behzad Ghazanfari, Fatemeh Afghah

This paper introduces a novel perspective about error in machine learning and proposes inverse feature learning (IFL) as a representation learning approach that learns a set of high-level features based on the representation of error for classification or clustering purposes.

Classification Clustering +3

Inverse Feature Learning: Feature learning based on Representation Learning of Error

no code implementations8 Mar 2020 Behzad Ghazanfari, Fatemeh Afghah, Mohammadtaghi Hajiaghayi

This paper proposes inverse feature learning as a novel supervised feature learning technique that learns a set of high-level features for classification based on an error representation approach.

General Classification Representation Learning

HAN-ECG: An Interpretable Atrial Fibrillation Detection Model Using Hierarchical Attention Networks

no code implementations12 Feb 2020 Sajad Mousavi, Fatemeh Afghah, U. Rajendra Acharya

The cardiologist level performance in detecting this arrhythmia is often achieved by deep learning-based methods, however, they suffer from the lack of interpretability.

Atrial Fibrillation Detection

An Autonomous Spectrum Management Scheme for Unmanned Aerial Vehicle Networks in Disaster Relief Operations

1 code implementation26 Nov 2019 Alireza Shamsoshoara, Fatemeh Afghah, Abolfazl Razi, Sajad Mousavi, Jonathan Ashdown, Kurt Turk

This paper studies the problem of spectrum shortage in an unmanned aerial vehicle (UAV) network during critical missions such as wildfire monitoring, search and rescue, and disaster monitoring.

Management

Single-modal and Multi-modal False Arrhythmia Alarm Reduction using Attention-based Convolutional and Recurrent Neural Networks

no code implementations25 Sep 2019 Sajad Mousavi, Atiyeh Fotoohinasab, Fatemeh Afghah

This study proposes a deep learning model that effectively suppresses the false alarms in the intensive care units (ICUs) without ignoring the true alarms using single- and multimodal biosignals.

Specificity

An Unsupervised Feature Learning Approach to Reduce False Alarm Rate in ICUs

no code implementations17 Apr 2019 Behzad Ghazanfari, Fatemeh Afghah, Kayvan Najarian, Sajad Mousavi, Jonathan Gryak, James Todd

In this paper, we propose a novel set of high-level features based on unsupervised feature learning technique in order to effectively capture the characteristics of different arrhythmia in electrocardiogram (ECG) signal and differentiate them from irregularity in signals due to different sources of signal disturbances.

Clustering Specificity

A Solution for Dynamic Spectrum Management in Mission-Critical UAV Networks

2 code implementations16 Apr 2019 Alireza Shamsoshoara, Mehrdad Khaledi, Fatemeh Afghah, Abolfazl Razi, Jonathan Ashdown, Kurt Turck

In this paper, we study the problem of spectrum scarcity in a network of unmanned aerial vehicles (UAVs) during mission-critical applications such as disaster monitoring and public safety missions, where the pre-allocated spectrum is not sufficient to offer a high data transmission rate for real-time video-streaming.

Management

SleepEEGNet: Automated Sleep Stage Scoring with Sequence to Sequence Deep Learning Approach

3 code implementations5 Mar 2019 Sajad Mousavi, Fatemeh Afghah, U. Rajendra Acharya

Electroencephalogram (EEG) is a common base signal used to monitor brain activity and diagnose sleep disorders.

EEG Sleep Stage Detection

A Unified Framework for Joint Mobility Prediction and Object Profiling of Drones in UAV Networks

no code implementations31 Jul 2018 Han Peng, Abolfazl Razi, Fatemeh Afghah, Jonathan Ashdown

In recent years, using a network of autonomous and cooperative unmanned aerial vehicles (UAVs) without command and communication from the ground station has become more imperative, in particular in search-and-rescue operations, disaster management, and other applications where human intervention is limited.

Management

A Shapley Value Solution to Game Theoretic-based Feature Reduction in False Alarm Detection

no code implementations5 Dec 2015 Fatemeh Afghah, Abolfazl Razi, Kayvan Najarian

False alarm is one of the main concerns in intensive care units and can result in care disruption, sleep deprivation, and insensitivity of care-givers to alarms.

General Classification

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